• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.1
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• pp.67-80
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• 2007

Nateon Messenger, which has the most number of users in Korea, supports many services such as E-mail, note, Cyworld, SMS, etc. In this paper, we will analyse the authentication traffic which is transmitted and received by the Nateon Messenger. Through performing the replay attack with the authentication information, we will show that an attacker can be authenticated illegally. Furthermore, we will show that other domestic messengers have similar security problems.

• Journal of Korean Public Health Nursing
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• v.32 no.1
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• pp.122-134
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• 2018

Purpose: This study was conducted to identify the effects of Satir's model based communication education on communication competence, emotional intelligence and depression-happiness in regional public hospital nurses. Methods: A non-equivalent control group pretest-posttest quasi-experimental design was used. The subjects were 36 nurses of the experimental group and 36 nurses of the control group. Satir's model based communication education was conducted for two days and the dependent variables were measured using the global interpersonal communication competence scale (GICC), emotional intelligence scale and short depression-happiness scale (SDHS). Data were analyzed by the Chi-squared test, Fisher's exact test and ANCOVA using SPSS 21.0. Results: Communication competence (F=12.7, p<.001) was significantly increased in the experimental group, as was emotional intelligence (F=6.67, p=.01). Conclusion: The results of the study suggest that Satir's model based communication education is an effective method to increase public hospital nurses' communication competence and emotional intelligence.

• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.3025-3027
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• 2000

본 논문에서는 변전소에서 수용가까지의 전력공급설비를 나타내는 도면인 배전설비도면의 주요 기호인 전주와 전선인식 방법에 관하여 기술한다 본 논문에서는 원형성에 근거하여 전주 후보를 추출한 후 이들 사이의 연결성에 근거하여 전선을 인식한 다음, 전주후보들 중에서 전주를 확인함으로써 전주와 전선을 인식하는 방법을 제안한다 제안된 방법은 다수의 배전 설비도면에 적용하여 실험하고 그 결과를 제시한다.

• Korean Journal of Child Studies
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• v.9 no.1
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• pp.1-17
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• 1988

This study was designed to investigate the relation between perspective-taking skills and communication abilities of young children. The major purposes of this study were to study the relation between perspective-taking skills and communication abilities, to investigate the relation perspective-taking skills and communication abilities with differing listeners, to investigate sex differences in communication abilities within the higher group the perspective-taking skills with differing listeners, and to determine differences between the sexes in communication abilities within the higher group of perspective-taking skills in different situational conditions. Sixty kindergarteners (30 boys and 30 girls) were tested on their perspective taking abilities and divided into two groups, the higher and the lower groups. Five instruments were used in this study: spatial, affective and cognitive perspective-taking tests, expression-ability test, and a communication ability test. The collected data were statistically analyzed by using Pearson's r, point biserial coefficient correlations (rpb), t-test, and three-way analyses of variance with one factor repeated measurement. There were significant relations between spatial, cognitive perspective-taking skills and kindergartener's communication abilities. There were no significant differences in communication abilities in differing listeners and situational conditions. In the group whose level of perspective taking-skills was high, differences between the sexes were found in spatial, and affective perspective-taking skills, only in case of differing listeners.

• Journal of dental hygiene science
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• v.18 no.2
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• pp.113-123
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• 2018

The purpose of this study to review clinicians and educators on required communication education factors of dental hygienists using qualitative research by focus group interview. The participants were dentists, dental hygienists and professors. A questionnaire was developed on communication education to collect data. The collated data derived concepts related to communication education. After transferring the data, were analyzed by open coding and axial coding using computer-aided qualitative data analysis software. Focus group emphasized that higher education on communication should be preceded before they are put into the clinical field. However, the dental hygienist emphasized experiential education in the clinical field, the professor emphasized additional education for continuity of communication education even after graduation. Besides, focus group emphasized role play, and the professor required that the standardization of the dental communication training courses objectives and role play modules and the education environment infrastructure should be established to implement communication education efficiently. The categories of communication education stated in the focus group were time and method for the dental communication training courses, dental communication training courses standardization and educational environment, of evaluation of communication competency, of perception of the dental communication training courses. This study identified the communication education development to conform with the needs of the clinical field strengthen and cultivate communication competency dental hygienists based on factors of communication education emphasized in focus groups.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.17 no.2
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• pp.141-148
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• 2006

Objectives : Internet became essential component in these days. This study primarily tried to find out the characteristics of high risk internet users through using the communication scale. Methods : We investigated levels of internet addiction using Internet Addiction Scale in 1,193 high school and middle school students. Participants were divided into 3 groups (high risk user group, potential risk user group, normal user group) according to the results from internet addiction scale. We additionally surveyed characteristics of internet use, and patterns of communication and Communication Scale based on Satir theory in 614 from 1,193 participants. Results : Boys showed higher tendencies for internet addiction than girls in internet addiction scale. There were significant differences in mean computer using time especially during weekends among 3 internet user groups. The distribution of communication types in each internet user group was similar and this finding coincided with previous study results. However high risk user group showed higher scores in each inadequate communication pattern such as placating, blaming, super-reasonable and irrelevant stance. Conclusion : These results suggest that adolescents who use internet in addictive patterns may have more problematic communication styles and these may be associated with poor interpersonal relationships.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.5
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• pp.9-17
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• 2019

As the IoT environment becomes more popular, the safety of the M2M environment, which establishes the communication environment between objects and objects without human intervention, becomes important. Due to the nature of the wireless communication environment, there is a possibility of exposure to security threats in various aspects such as data exposure, falsification, tampering, deletion and privacy, and secure communication security technology is considered as an important requirement. In this paper, we propose a new method for group key generation and exchange using trap hash collision hash in existing 'M2M communication environment' using hash collision, And a mechanism for confirming the authentication of the device and the gateway after the group key is generated. The proposed method has attack resistance such as spoofing attack, meson attack, and retransmission attack in the group communication section by using the specificity of the collision message and collision hash, and is a technique for proving safety against vulnerability of hash collision.

• Journal of Educational Research in Mathematics
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• v.8 no.1
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• pp.145-162
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• 1998

This study investigated the effect of teaching mathematical communication in mathematics learning. Cooperative learning, mathematics pin pals, and writing a mathematics diary were used to teach how to communicate mathematically. The experimental group was assigned to cooperate in class, to write a mathematics diary at the end of each class, and to exchange the mathematics pen pals once a week. The control group was taught by the traditional teaching method. The results were analyzed quantitatively and qualitatively. The learning achievement between the two groups was performed with pretests and posttests. And after this study, mathematics pen pals, video protocol and open-ended test were analyzed. The results of this study are the following: 1. There were little differences in learning achievement test between the group taught through communication and those not. And there were little differences in the results of achievement test between the two groups-high and low level classes.2. Cooperative learning, writing a mathematics diary and mathematics pen pals were effective as methods of teaching communication mathematically. The analysis of mathematics pen pals which is to investigate student's writing abilities showed that pen pal partners were improved in QCAI communication levels. There was a significant difference between the two groups in open-ended test. This means that communication learning has an effect on the tests for mathematical thought, reasoning, and creative thought. The analysis of video protocol showed that four students in a cooperative group were improved in their speaking and listening abilities.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 2003.11a
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• pp.208-213
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• 2003

In this paper, we have designed the duplexer using non-radiative dielectric (NRD) guide in millimeter band. The designed duplexer is composed of two stepped-impedance filters and T-junction. Stepped-impedance filters are designed with an equivalent circuit model of evanescent waveguide and the T-junction is optimized to minimize return loss. The characteristics of duplexer shows a good agreement with the expected results.

• Korean Journal of Child Studies
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• v.30 no.5
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• pp.195-208
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• 2009

This research was a comparative study of children's mothers in counseling and mothers in non-counseling (comparison) groups to examine differences between groups in emotional expressiveness, ambivalence over emotional expressiveness, type of communication and parenting behavior, Subjects were 91 mothers having counseling and 133 mothers in the non-counseling group. Data were analyzed by independent samples t-test. Results showed that mothers in the non-counseling group reported more positive emotional expressiveness than the counseling group. Mothers in the counseling group reported more ambivalence over emotional expressiveness, more negative communications and more negative parenting behavior than the comparison group.