• 한국정보전자통신기술학회논문지
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• 제16권2호
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• pp.61-68
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• 2023

수중통신에서 다중 밴드 기법은 채널 부호화된 동일한 데이터를 여러 주파수 밴드로 나누어 전송하는 기법인데, 이는 수중에서 다중 경로, 도플러 확산 등으로 인한 특정 주파수의 선택적 페이딩 현상을 극복하면서 성능을 향상시키는 기법이다. 이러한 다중 밴드 통신의 단점은 성능이 열악한 특정한 밴드가 전체 성능에 영향을 미친다. 따라서 본 논문에서는 다중 밴드 통신에서 각 밴드의 성능을 예측하여 가장 신뢰성이 높은 밴드를 선택함으로써 성능을 향상시키는데, 본 논문에서는 세 가지 성능을 예측하는 기법을 제시하였으며, 실험을 통하여 프리엠블 오류율을 이용하는 방법이 가장 효율적인 방법임을 확인하였다.

• 방송공학회논문지
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• 제27권1호
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• pp.13-19
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• 2022

동영상 객체 분할(VOS) 기술은 연속된 레이블링 데이터를 필요로 하며, 현재 공개된 데이터셋으로 훈련된 VOS방법은 그 성능이 제한된다. 이 문제를 해결하기 위해 본 논문에서는 간단하면서도 효과적인 동영상 데이터 증강 기술들을 제안한다. 첫번째 증강 기술은 영상 내에서 객체를 제외한 배경을 다른 영상의 배경으로 대체하는 기법이고, 두번째 기술은 학습될 동영상 데이터의 순서를 무작위 확률로 뒤집어 역 재생되는 영상을 학습시키는 기법이다. 두 증강 기술은 객체 분할 시 배경 정보에 강인한 추정을 가능하게 하였고, 추가 데이터 없이 기존 모델의 성능을 향상시킬 수 있음을 보였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권10호
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• pp.2883-2902
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• 2023

Since the existing anti-jamming methods, including intelligent methods, have difficulty against high-speed reactive jamming, we studied a new methodology for jamming utilization instead of avoiding jamming. Different from the existing jamming utilization techniques that harvest energy from the jamming signal as a power supply, our proposed method can take the jamming signal as a favorable factor for frequency detection. Specifically, we design an intelligent differential frequency hopping communication framework (IDFH), which contains two stages of training and communication. We first adopt supervised learning to get the jamming rule during the training stage when the synchronizing sequence is sent. And then, we utilize the jamming rule to improve the frequency detection during the communication stage when the real payload is sent. Simulation results show that the proposed method successfully combated high-speed reactive jamming with different parameters. And the communication performance increases as the power of the jamming signal increase, hence the jamming signal can help users communicate in a low signal-to-noise ratio (SNR) environment.

• 한국간호교육학회지
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• 제23권4호
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• pp.409-418
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• 2017

Purpose: Ineffective communication between healthcare professionals leads to medical errors and puts patients at risk of harm. The aim of this study was to examine the effects of interdisciplinary communication training in simulated settings on self-confidence in communication, observed communication behavior, and technical skill performances of nursing students. Methods: A repeated measures design with one group was conducted. Data was collected from 92 nursing students through a self-administered questionnaire and an observed behavior checklist. Data analysis was performed using descriptive statistics, a paired t-test, the Wilcoxon signed rank test, the Friedmann test, a Repeated Measures ANOVA, and the Spearman correlation coefficient. Results: Self-confidence in communication, observed Identification-Situation-Background-Assessment-Recommendation-Read Back communication behavior, and technical skill performances of nursing students were significantly improved. In observed communication behavior, the performance of Assessment and Read Back communication significantly improved. However, communication of Background, Assessment, and Recommendation did not improve to a satisfactory level. Observed communication behavior was not correlated with the overall technical skill performance. Conclusion: These results indicate that interdisciplinary communication training in simulated settings was effective in improving nursing students' confidence and communication skills with physicians. Longitudinal studies with larger samples are recommended in order to verify the effects of interdisciplinary communication training on clinical outcomes as well as communication competence.

• 한국정보통신학회논문지
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• 제23권12호
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• pp.1673-1678
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• 2019

산업 통신에는 다양한 네트워크가 있으며 여러 가지 통신 방식을 사용한다. 기업에서는 생산 라인 확장, 공장 업그레이드, 네트워크 세분화, 시스템 통합 등을 위하여 산업용 장치와 네트워크 간에 통신 변환이 필요하다. 이것은 많은 제조회사가 제작한 설계자가 다른 다양한 기계 장치를 네트워크에 연결하고 전송하기 위하여 데이터 또는 프로토콜 변환을 위한 통신 장비가 제공되어야함을 의미한다. 본 논문에서는 적층형 통신 모듈을 사용하여 산업 통신 프로토콜 변환을 지원할 수 있는 산업용 통신 게이트웨이를 설계하였다. 제작된 게이트웨이는 RS485 시리얼 통신을 이용하는 개별 통신 모듈을 다층으로 연결하는 구조를 가지고 있다. 각각의 통신 모듈은 아날로그 데이터 카드, 디지털 데이터 카드, CAN 및 LAN 지원 카드로 구성하였다. 메인 보드 프로세서는 Atmega micro-processor를 사용하였고, RS485 시리얼 슬롯을 배치하여 적층형 통신 모듈 구조를 가지도록 하였다. 본 논문에서 제작된 적층형 산업용 통신 게이트웨이는 아날로그 및 디지털 I/O 기능과 CAN과 LAN을 지원할 수 있기 때문에 산업용 통신 제어 및 모니터링에 폭넓게 활용될 수 있다.

• 아동학회지
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• 제14권1호
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• pp.167-177
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• 1993

The purpose of the present study to investigate relationships among family background factors (i. e. adolescents' sex, mother's educational level and employment status. family's SES, and family types), mother-adolescent communication patterns and ego-identity development of adolescents. The subjects were 169 mother-adolescent dyads living in Seoul. Statistical methods used for the data analysis were frequencies, percentiles, Mean, ANOVA, Duncan's multiple range test, Pearson's product-moment correlation, regression analysis, ANCOVA, and Cronbach's ${\alpha}$. The results were as follows: (1) Significant differences of the adolescents were between family's SES and open communication patterns, between family types and problematic communication patterns. (2) Significant differences of the mothers were between family's SES and open communication patterns, and among family's SES, mother's educational level and problematic communication patterns. (3) There were significant differences in ego-identity of adolescents according to family's SES. (4) There were significant relationships between mother-adolescent communication patterns and the ego-identity development of adolescents. (5) The most influential variable explaining adolescents' ego-identity development was found to be problematic communication patterns perceived by adolescents. Family background factors and mother's communication patterns were not found to have significant effects.

• 간호행정학회지
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• 제22권5호
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• pp.518-530
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• 2016

Purpose: The purpose of this study was to investigate effect of the SBAR-Collaborative Communication Program on nurses'communication skills and on collaboration between nurses and doctors. Methods: From March 11 to November 11, 2013, data were collected from 180 hospital nurses working in a university hospital in Gyeonggi province. Outcomes were measured at three time intervals; before, three and six months after the program was completed. Results: After participating in this program, there was a significant increase in nurses'communication skills but not in collaboration between nurses and doctors. None of the participants' general categories influenced nurses'communication skills at pre-test, but age, education level, total years of working and work department significantly influenced scores at 3 and 6 months. Work department was the only category for which there was a significant difference in collaboration between nurses and doctors at pre-test, and education level and work department were related to significant improvement at 6 months. Conclusion: Findings indicate that this program can improve communication skills for nurses and also, collaboration between nurses and doctors, especially for nurses under 25 years of age. Thus nursing and hospital managers should provide SBAR-Collaborative Communication Programs to new nurses in their job training.

• The Journal of Asian Finance, Economics and Business
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• 제7권3호
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• pp.177-190
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• 2020

This study aims to present explicit findings from an internal perspective, namely the interaction patterns of marketing communication between pentahelix elements and testing the expectations of tourists towards tourism activities through a simulation model between variables. This study is divided into two methods of analysis, namely qualitative explorative, where the study aims to invest in communication patterns and patterns of interaction between pentahelix stakeholders in Sitiwinangun Tourism Village, West Java, Indonesia with involve 17 informants who came from pentahelix elements (Government, academics, community, business and media). Second, quantitative method to measure the extent of effectiveness rather than collaboration activities and the role of marketing communication to tourist satisfaction is done by an analytical approach involving 30 tourists through customer satisfaction surveys. The results of this study illustrate that the involvement of each pentahelix element has not been maximized. The pattern of interaction and communication between elements also shows the gap between interests, expectations, and reality. This study provides a real picture that to realize a tourism program that is profitable, holistic, and sustainable requires collaboration that is wrapped with transparent and interactive communication patterns. The marketing communication concept approach combined with collaboration theory between stakeholders can be useful for sustainable tourism.

• Child Health Nursing Research
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• 제15권4호
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• pp.392-400
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• 2009

Purpose: The purpose of this study was to identify influences of child-rearing attitude and parent-school age communication on self-efficacy of 5th and 6th graders. Methods: Data were collected using questionnaires from 460 5th and 6th graders in S city. The data were analyzed using SPSS WIN program. Results: There were significant differences in child-rearing attitude according to gender, mother's level of education, perceived atmosphere and religion. Self-efficacy was significantly correlated with school record, family income, mother's level of education, father's level of education, and perceived atmosphere. There were significant differences in communication with father according to father's level of education, and perceived atmosphere. Communication with mother was significantly correlated with father's level of education, mother's level of education and perceived atmosphere. The relative influence toward the children's self-efficacy shown in the order of importance was as follows; child-rearing attitude, school record, communication with mother, communication with father, father's level of education, family income. Conclusion: From the study, self-efficacy appears to be influenced by multiple factors such as child-rearing attitude, school record, communication with mother, communication with father, father's level of education, and family income.

• 한국치위생학회지
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• 제16권5호
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• pp.733-740
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• 2016

Objectives: The purpose of this study was to investigate the relationship among the factors of communication ability according to self-awareness and other-awareness in some dental hygiene students. Methods: A self-reported questionnaire was completed by 260 dental hygiene students in Gwangju and Jeonnam from June 14 to 28, 2016. After explanation of the purpose of the study, an informed consent was written by the students. The effect size was calculated by $G^*power$ 3.1 program. The study instruments comprised the general characteristics of the subjects, self-awareness, other-awareness, and communication ability. Data were analyzed by independent test, one way ANOVA, $Scheff{\acute{e}}$ test, stewise multiple regression test, and Pearson's correlation test using SPSS 18.0. Results: Communication ability had a significant positive correlation with self-awareness(r=0.427, p<0.001) and other-awareness (r=0.460, p<0.001). The higher level of self-awareness and other-awareness was proportional to communication ability. The influencing factors of communication ability included private self-awareness(${\beta}=0.227$), public self-awareness(${\beta}=0.170$), social anxiety(${\beta}=0.182$), and external other-awareness(${\beta}=0.282$). Conclusions: To improve the communication ability in the dental hygiene students, it is important to improve self-awareness and other-awareness. The implementation of communication skill in the curriculum will enhance the dental hygiene students competency.