• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제12권4호
• /
• pp.1436-1457
• /
• 2018

Secure routing services in Wireless Sensor Networks (WSNs) are essential, especially in mission critical fields such as the military and in medical applications. Additionally, they play a vital role in the current and future Internet of Things (IoT) services. Lightness and efficiency of a routing protocol are not the only requirements that guarantee success; security assurance also needs to be enforced. This paper proposes a Secure-Fuzzy Energy Aware Routing Protocol (S-FEAR) for WSNs. S-FEAR applies a security model to an existing energy efficient FEAR protocol. As part of this research, the S-FEAR protocol has been analyzed in terms of the communication and processing costs associated with building and applying this model, regardless of the security techniques used. Moreover, the Qualnet network simulator was used to implement both FEAR and S-FEAR after carefully selecting the following security techniques to achieve both authentication and data integrity: the Cipher Block Chaining-Message Authentication Code (CBC-MAC) and the Elliptic Curve Digital Signature Algorithm (ECDSA). The performance of both protocols was assessed in terms of complexity and energy consumption. The results reveal that achieving authentication and data integrity successfully excluded all attackers from the network topology regardless of the percentage of attackers. Consequently, the constructed topology is secure and thus, safe data transmission over the network is ensured. Simulation results show that using CBC-MAC for example, costs 0.00064% of network energy while ECDSA costs about 0.0091%. On the other hand, attacks cost the network about 4.7 times the cost of applying these techniques.

• 한국학교ㆍ지역보건교육학회지
• /
• 제15권2호
• /
• pp.39-49
• /
• 2014

Objectives: University students's oral health care practice and oral health status are very important. Because its affect their systemic disease, so as to have confidence, and to be eager to study. However if they feel dental fear, they avoid dental treatment. It is miss opportunities of early treatment and prevention treatment and have little effect on dental treatment. The aim of this study was to investigate the factors influencing dental fear of university students to reduce their dental fear. Methods: A total of 366 self-administered questionnaires were collected from university student in Cheon-an. To investigate the factors influencing dental fear of university students, t-test, one-way ANOVA, correlation analysis, linear regression analysis were carried out by using SPSS ver. 18.0 Results: University students feel the most fear of specific dental stimuli. Especially, 'Feeling the needle injected'. University Students felt dental fear in order of 'fear of specific dental stimuli', 'physiologic arousal', 'avoidance fear'. 'Feeling the needle injected', they felt severe dental fear. 'My muscles become tense' of Symptoms they feel dental fear was the most frequent Sex affects avoidance fear, physiologic arousal, fear of specific dental stimuli and dental fear. Femal feel more its than male. The time since last dental clinic visit affects physiologic arousal, fear of specific dental stimuli and dental fear. Group do not visit the dental clinic within a year feel more its than others. Conclusions: To reduce dental fear in university students, it is necessary to make them visit dental clinics frequently and dental staffs consider their sex. Therefore, Department of dental hygiene and dentistry must be added the management of dental fear of the curriculum. In addition, it must be emphasized that to visit dental clinics frequently for university students.

• 한국콘텐츠학회논문지
• /
• 제19권3호
• /
• pp.530-538
• /
• 2019

이 연구는 테러에 대한 정보가 두려움에 미치는 영향을 살펴보기 위한 것으로, 간접적으로 테러에 대한 정보를 전달하는 정보 유형에 의하여 실제 국민들의 두려움에 미치는 영향을 살펴봄으로써 테러에 대한 두려움의 실체를 파악하고 정보 유형에 따라 두려움에 미치는 정도의 차이를 살펴보기 위한 목적을 가진 연구이다. 테러는 특정목적을 가진 개인 또는 단체가 살인 납치 유괴 저격 약탈 등의 폭력적인 방법으로 사회적 공포상태를 야기시켜 자신들이 원하는 목적을 달성하기 위한 부당한 행위이다. 테러가 발생할 경우 많은 사람들은 테러로 인해 두려움을 느끼게 되고 두려움으로 인하여 모든 삶의 활동이 위축된다. 따라서 테러는 단순히 폭력행위를 통한 공포심을 야기시키는 것에서 그치지 않고 사회 경제 문화 등 모든 영역에서 국민의 삶에 부정적인 영향을 미친다. 이 연구에서는 테러에 대한 간접적인 경험에 영향을 주는 테러에 대한 정보가 테러에 대한 두려움에 미치는 영향을 살펴보았다. 그 결과, 간접적인 경험에 영향을 미치는 확인된 정보와 미확인된 정보 모두 두려움에 유의미한 영향을 끼치는 것으로 나타났으며, 테러에 대한 미확인된 정보가 확인된 정보에 비해 두려움에 더 크게 영향을 미치는 것으로 나타났다.

• 영어영문학
• /
• 제55권6호
• /
• pp.1123-1137
• /
• 2009

Revisiting the horror of slave mutiny in nineteenth century America via Julia Kristeva's concept of abject, this essay examines abject fear in Amasa Delano and Babo's subversive act to deceive Delano in Herman Melville's "Benito Cereno." Babo, the slave, exercises subversive power, thereby reversing racial hierarchy aboard the slave ship-the San Dominick. Babo's ability to mimic and control racial stereotypes exposes how nineteenth-century racial hierarchy was only a social fiction, which becomes the very source of Delano's fear. Delano's dread belies upon the possible disruption of social order triggered by Babo'sblack rebellion. In order to repress his fear, Delano consciously and unconsciously attempts to re-inscribe white dominion and reaffirm black inferiority and stereotypes by means of rationalizing the disturbing signs he witnesses on the San Dominick. When Delano discovers the realsituation of the ship, he must relinquish the abject resonance that disturbs the previous racial order. Employing a legal document, Delano re-inscribes the official position of the blacks as slaves, defining them as violent savages, and thereby silences Babo. However, Melville's text is not a testament to white power. "Benito Cereno" actually endorses abject instability to challenge racial hierarchies through the poignant image of Babo's dead gaze in the last scene of the novella. Thus, "Benito Cereno" exemplifies the recurring power of abject as a threat to social hierarchy and as a constant reminder of the falsity and insecurity of a social order.

• 한국치위생학회지
• /
• 제16권6호
• /
• pp.1057-1066
• /
• 2016

Objectives: The purpose of the study was to investigate the correlation between personal temperament, dental visit, and dental fear among adults. Methods: A self-reported questionnaire was completed by 400 adults visiting dental clinics from April to June, 2016. The questionnaire consisted of general characteristics of the subjects, dental fear, and temperament. Data were analyzed by t test, chi-square test, chi-square test, and pearson's correlation analysis using SPSS v. 23.0. Results: The first impression of dental clinics had an impact on dental fear (p<0.001). The negative image on the dental clinics increased dental fear of the visitors. There was a significant difference between the purpose of dental visit and dentla fear. Conclusions: The positive image of the dental clinics can solve the dental fear due to treatment in the adults. The dental consumers should try to have the comfortable attitude toward dental clinic in case of visit.

• 감성과학
• /
• 제10권3호
• /
• pp.463-470
• /
• 2007

공포에 대한 연구는 주로 불안과 공포 장애를 가진 환자들을 대상으로 수행되어왔으며, 공포를 불안의 특수한 한 형태라고 생각하여 불안과 공포에 대한 연구가 함께 이루어져왔다. 본 연구에서는 아동이 공포 정서를 경험하는 동안 나타나는 자율신경계 반응을 밝히고자 하였다. 초등학생을 대상으로 공포 정서를 유발하는 시청각 동영상을 제시하고 심리 반응과 자율신경계 반응을 측정하였다. 연구 결과, 공포 정서의 적합성 및 효과성은 80%이상으로 나타나 공포정서유발자극이 적절하고 효과적이었음을 알 수 있었다. 자율신경계 반응 분석 결과, 공포정서가 유발되는 동안 피부전도수준, 피부전도반응, 피부전도 반응의 수, 호흡주기관련 심박률 변화, 호흡수, 심박률분산의 고주파수 성분이 유의하게 증가하였고, 심장박동주기는 감소하였다. 공포 정서에 의해 야기된 자율신경계 반응에서는 불안수준이 높을수록 피부온도, 심박률, 호흡주기관련 심박률 변화가 큰 것으로 나타났다. 본 연구는 불안수준이 높은 아동일수록 공포 정서를 경험할 때 자율신경계 반응의 변화가 더 크다는 것을 나타낸다.

• 가정과삶의질연구
• /
• 제26권2호
• /
• pp.155-168
• /
• 2008

The purpose of this study was to investigate the relationships of parental attachment and self-differentiation with fear of intimacy perceived by college students. The data of the study were collected through self-administered questionnaire method with 187 male and 159 female college students. The major results of this research were as follows. First, there were significant differences in the level of attachment with parents according to parent's marital statue, living standard, and father's education level. Second, there were significant differences in the level of self-differentiation across sex, age, parent's marital statue, living standard, and parental's education level. Third, the level of attachment with parents was positively correlated with self-differentiation, indicating that the greater the level of attachment with parents, the higher the degree of self-differentiation. Fourth, fear of intimacy was negatively associated with parental attachment and self-differentiation, showing that the greater the degree of fear of intimacy, the lower the lever of attachment with parents and self-differentiation. Finally, multiple regression analysis result reported that emotional cutoff among the four self-differentiation subscales was the most powerful variable predicting the fear of intimacy. The results were shortly discussed in terms of some implications for education and counseling with college students.

• 보건의료산업학회지
• /
• 제6권1호
• /
• pp.141-151
• /
• 2012

In this study a survey was conducted of a total of 187 insurance sales workers from 10 branches of S Insurance Company located around Korea to gather information on causes of dental fear. Results revealed that the group who had experienced direct dental pain in the past showed higher fear levels than the group without such experience. With respect to indirect dental pain, the group with such experience showed higher fear levels in 'fear of dental appointments' and 'fear of antiseptic smells than the group without such experience. Concerning gender, higher fear levels were observed among females than among males. It was also found that the majority of the respondents seldom go for a regular dental check-up regardless of whether they had experienced direct or indirect pain during dental treatment. In addition, there was positive correlation among all the items in the Dental Fear Survey Scale at a significance level of 0.1%. Twenty of all the DFS items were found to be related to causes of dental fear, meaning that most of the elements involving the dentistry may contribute to the development of dental fear among dentally fearful people.

• Journal of Korean Dental Science
• /
• 제10권1호
• /
• pp.22-28
• /
• 2017

Purpose: The purpose of this study was to evaluate the dental fear experienced among Korean adolescents and to identify the relevant factors. Materials and Methods: In order to compare the level of dental fear depending on the subjects' previous experience, descriptive statistical analysis was performed. Gender- and grade-dependent evaluation was performed according to the presence of their previous dental visit and dental fear. Subjective oral health status was also investigated. In order to determine the factors affecting dental fear, logistic regression analysis was performed. Result: Among the total of 333 subjects who had experienced dental fear, females were found to experience 1.766 times greater dental fear than males (P=0.007). The worse subjective perception of their oral health was associated with increase in the experience of dental fear by 1.245-fold (P=0.047). Conclusion: The dental fear was likely to be formed during the visit to the dentist's office or through previous experience of dental treatment. Therefore in order to reduce the fear associated with dental treatment in adolescents, establishemnt of a proper environment in the dental clinic and a patient management program are necessitated.

• 치위생과학회지
• /
• 제23권4호
• /
• pp.255-263
• /
• 2023

Background: This study used text mining techniques to determine public perceptions of dental fear, extracted keywords related to dental fear, identified the connection between the keywords, and categorized and visualized perceptions related to dental fear. Methods: Keywords in texts posted on Internet portal sites (NAVER and Google) between 1 January, 2000, and 31 December, 2022, were collected. The four stages of analysis were used to explore the keywords: frequency analysis, term frequency-inverse document frequency (TF-IDF), centrality analysis and co-occurrence analysis, and convergent correlations. Results: In the top ten keywords based on frequency analysis, the most frequently used keyword was 'treatment,' followed by 'fear,' 'dental implant,' 'conscious sedation,' 'pain,' 'dental fear,' 'comfort,' 'taking medication,' 'experience,' and 'tooth.' In the TF-IDF analysis, the top three keywords were dental implant, conscious sedation, and dental fear. The co-occurrence analysis was used to explore keywords that appear together and showed that 'fear and treatment' and 'treatment and pain' appeared the most frequently. Conclusion: Texts collected via unstructured big data were analyzed to identify general perceptions related to dental fear, and this study is valuable as a source data for understanding public perceptions of dental fear by grouping associated keywords. The results of this study will be helpful to understand dental fear and used as factors affecting oral health in the future.