• 제목/요약/키워드: 자기 상관

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A Detection Algorithm for Modulation Types of Radar Signals Using Autocorrelation Comparison Ranges (자기상관 비교 범위를 활용한 레이더 신호의 펄스 변조 형태 검출 알고리즘)

  • Kim, Gwan-Tae;Ju, Youngkwan;Jeon, Joongnam
    • Journal of Convergence for Information Technology
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    • 제8권5호
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    • pp.137-143
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    • 2018
  • Generally, a radar signal is modulated and transmitted in order to avoid signal detection. In electronic warfare, the specification of a radar is recognized by analysing the received radar pulses. In this paper, we propose an algorithm to recognize the PRI (Pulse Repetition Interval) type of radar signals. This algorithm uses the autocorrelation technique applying different comparison ranges according to the PRI type. It applies a short comparison window to stable and staggered PRI, and a relatively large comparison range to jittered PRI. The experiment shows that the proposed algorithm can discriminate the PRI type of radar pulses correctly. For the more, it can find out the stagger level of staggered type of radar signals.

On the Number of Distinct Autocorrelation Distributions of M-ary Sidel'nikov Sequences (M진 Sidel'nikov 수열의 서로 다른 자기 상관 분포의 개수)

  • Chung, Jung-Soo;Kim, Young-Sik;No, Jong-Seon;Chung, Ha-Bong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • 제32권10C호
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    • pp.929-934
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    • 2007
  • In this paper, we enumerate the number of distinct autocorrelation distributions that M-ary Sidel'nikov sequences can have, while we change the primitive element for generating the sequence. Let p be a prime and $M|p^n-1$. For M=2, there is a unique autocorrelation disuibution. If M>2 and $M|p^k+1$ for some k, $1{\leq}k, then the autocorrelatin distribution of M-ary Sidel'nikov sequences is unique. If M>2 and $M{\nmid}p^k+1$ for any k, $1{\leq}k, then the autocorrelation distribution of M-ary Sidel'nikov sequences is less than or equal to ${\phi}(M)/k'(or\;{\phi}(M)/2k')$, where k' is the smallest integer satisfying $M|p^{k'}-1$.

A study using spatial regression models on the determinants of the welfare expenditure in the local governments in Korea (공간회귀분석을 통한 지방자치단체 복지지출의 영향요인에 관한 연구)

  • Park, Gyu-Beom;Ham, Young-Jin
    • Journal of Digital Convergence
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    • 제16권10호
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    • pp.89-99
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    • 2018
  • The purpose of this study is to analyse the determinants of the change in the welfare expenditure of local governments in 2015. This study analyzed the spatial correlation of welfare expenditure among neighboring local governments and determined the factors affecting the welfare expenditures. According to the results of the study, spatial correlation of welfare expenditure among local governments appears. Determinants, such as socio-economic factors, administrative factors, public financial factors are affecting the amount of the welfare expenditures, but local political factors, and local tax, last year's budgets are not correlated with the amount of local welfare expenditures. In this study, it is significant to found out that the spatial correlation of welfare expenditure among the local governments and to examine the determinants. If possible, it is necessary to analyze the time-series analysis using the multi-year welfare expenditure data, expecially self-welfare expenditures.

Effects of Cyber Universities' Career Maturity on Academic Stress : Mediator Effects of Self-directed Learning Readiness (사이버대학생의 진로성숙도가 학업스트레스에 미치는 영향 : 자기주도 학습 준비도의 매개효과)

  • Kim, Hyun-Ah;Lee, Jayoung
    • The Journal of the Korea Contents Association
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    • 제14권11호
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    • pp.486-496
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    • 2014
  • The purpose of this study was to examine the role of self-directed learning readiness between career maturity and academic stress. To examine it, a total of 582 cyber universities were participated in this study, and correlation analysis and regression analysis were conducted. Therefore, career maturity was significantly positive correlated with self-directed learning readiness and it was significantly negative correlated with academic stress. In addition, it was revealed that self-directed learning readiness mediated between career maturity and academic stress. Based on the results, we discussed the strategies for reducing academic stress for cyber students, limitations and suggestions for future researches were also discussed.

The Influence of Self-Compassion on Binge Eating in College Students: Mediating Effects of Negative Affect and Negative Urgency (대학생의 자기자비가 폭식행동에 미치는 영향: 부정정서와 부정 긴급성의 매개효과)

  • Lee, Seul-Gi;Lee, Hee-Kyung
    • The Journal of the Korea Contents Association
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    • 제22권9호
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    • pp.412-425
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    • 2022
  • The purpose of this study is to examine the relationship between self-compassion and binge eating and to examine the mediating effects of negative affect and negative urgency. To validify this hypothesis, 441 college and graduate students were measured self-compassion, negative affect, negative urgency, and binge eating. For the collected data, SPSS(23.0) and AMOS(23.0) were used for descriptive statistics, correlation analysis, and analyzing the structural equation model. The results of this study are summarized as follows. First, the correlation analysis showed significant correlations among self-compassion, negative affect, negative urgency, and binge eating. Second, in the relationship between self-compassion and binge eating, negative affect and negative urgency showed serial mediating effects. This means that for college and graduate students, the promotion of self-compassion can reduce binge eating behavior by sequentially reducing negative emotions and negative urgency. Finally based on these results, practical applications of self-compassion in the treatment of binge eating behavior were proposed.

군 장병의 그릿 및 주관적 안녕감이 자기결정성에 미치는 영향에 있어 회복탄력성의 매개효과

  • Bae, Dong-Hun;Byeon, Sang-Hae
    • 한국벤처창업학회:학술대회논문집
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    • 한국벤처창업학회 2022년도 추계학술대회
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    • pp.105-117
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    • 2022
  • 본 연구은 군 장병들의 자기결정성에 영향을 미치는 변인을 선정하고 회복탄력성의 매개효과를 알아보고자 한 박사학위논문의 요약본이다. 연구를 위해 전국 육군 8개 부대 장병 898명을 대상으로 자기결정성의 관련 변인을 측정하기 위한 설문을 실시하였다. 설문 결과는 통계분석을 시행하였는데, 매개효과 검증을 위해 독립변인으로 그릿과 주관적 안녕감을, 종속변인으로 자기결정성, 매개변인을 회복탄력성으로 하는 3단계 회기분석을 실시하였다. 연구 결과, 군 장병들의 일반적인 특징에서 성별과 회복탄력성 교육참여 여부는 각 변인에 유의한 차이를 보이지 않았고, 연령은 27세 이상, 계급은 부사관이 모든 변인에서 높은 수치를 보였다. 그릿과 주관적 안녕감의 하위요인들은 자기결정성에 모든 하위요인에 다소 높은 정적 상관관계와 유의한 영향을 미치는 것으로 나타났으며, 그릿과 주관적 안녕감의 하위요인들은 회복탄력성의 모든 하위요인과도 전반적으로 높은 정적 상관관계를 보였고, 전반적으로 유의한 영향을 미치는 것으로 나타났다. 회복탄력성의 하위요인들은 자기결정성의 하위요인 전반에 상관관계를 가졌으며, 부분매개효과를 확인했으나 일부요인은 기준을 충족하지 못하였다. 결론적으로 군 장병들에게 지속적인 관심과 꾸준한 노력을 기울일만한 동기부여가 무엇보다 필요하며, 군 장병들의 성공적인 자기결정력 성장을 위해서는 자율성 증진과 원활한 대인관계 환경 제공을 통한 그릿과 주관적 안녕감의 요인들의 충족이 필요함을 알 수 있었다. 또한 장병들의 회복탄력성 능력 향상을 위한 그릿과 주관적 안녕감 증진은 장병들의 자기결정성 증진에 기여할 주요 수단임을 알 수 있었고, 장병들의 주관적, 긍정적 심리상태와 자신 삶의 만족을 위한 주관적인 능력 증진을 위해서는 그릿 및 주관적 안녕감과 회복탄력성이 주요한 에너지로 활용될 수 있음을 추론할 수 있었다.

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Relationship between Spouse's Covert Narcissism and Marital Satisfaction : Mediating Effect of Cognitive Emotion Regulation Strategies (배우자의 내현적 자기애성향과 결혼만족도의 관계: 인지적 정서조절전략의 매개효과)

  • Kim, Sung-Mi;Lee, Su-Lim
    • The Journal of the Korea Contents Association
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    • 제18권4호
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    • pp.186-201
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    • 2018
  • The purpose of this study was to verify the mediating effect of adaptive/maladaptive cognitive emotion regulation strategies in the relation between perceived spouse's covert narcissism and marital satisfaction. For this purpose, 300 adults who were married in Seoul and Gyeonggi province were subjected to covert narcissism, marital satisfaction, and cognitive emotion regulation strategy scale and analyzed using the SPSS 23.0 program. The results of the study was followed. First, perceived spouse's covert narcissism showed a significant negative correlation with marital satisfaction and adaptive cognitive emotion regulation strategy, whereas it showed a significant positive correlation with maladaptive cognitive emotion regulation strategy. The marital satisfaction showed a significant positive correlation with adaptive cognitive emotion regulation strategy, but a significant negative correlation with maladaptive cognitive emotion regulation strategy. Second, adaptive/maladaptive cognitive emotion regulation strategies partially mediated the effects of perceived spouse's covert narcissism of on marital satisfaction. Based on these results, the implications and limitations of this study and suggestions for future research were discussed.