• The Journal of the Korea Contents Association
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• v.16 no.1
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• pp.699-707
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• 2016

The purpose of this study, including the Korea stock market and neighboring countries markets is seeing a look at the correlation and synchronization phenomenon. For this purpose, which is expected to have an impact on Korea's stock market, selection the United States and China, Japan, Germany on behalf of the European analyzed the data of the last 151 months. Any analysis, Korea market appeared to show a high correlation with the synchronization phenomenon in Germany and the United States. However Korea and Japan exhibited a low correlation. While the US market showed a very high correlation with Germany but showed a low correlation with China. China has been judged by the proprietary market due to a low correlation with the United States and Japan. The Japanese market has been more affected in Germany and the United States than Asian markets. German market is analyzed to influence the US market under the influence of the Asian market.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.11
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• pp.1763-1770
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• 2013

The purpose of this study was to investigate the correlation amongst the social function, communication function, activities of daily living and gross motor function beyond existing research on physical function and functional capacity in cerebral palsy. 43 children with cerebral palsy participated in this study and significant correlations were found among social function, communication function, activities of daily living and gross motor function. The greatest significant correlations were found between social function and activities of daily living. Significant higher correlations were found between items of social function and communication, but were lower between social function and gross motor function. The results showed that we consider the social aspects of function of children with cerebral palsy in the area of rehabilitation in order to focus on the problem in real life.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.239-244
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• 2019

The purpose of this study was to determine the correlation between upper limb muscle power and bat swing speed in elementary school baseball players. This study subjects were 32 subjects. Upper extremity muscle strength was measured in the Both Shoulder joints extensor flexor abductor adductor, Both elbow joints extensor flexor and bat swing speed. The correlation between upper extremity muscle strength and bat swing speed was analyzed using pearson's correlation analysis. There was a significant correlation between dominant upper extremity muscle strength and bat swing speed in the order of shoulder adductor, shoulder abductor, elbow flexor, and shoulder flexor and in correlation between non-dominant upper extremity muscle strength and bat swing speed in the order of shoulder adductor, elbow flexor, shoulder abductor, shoulder extensor, elbow extensor, and shoulder flexor. From these results, it can be seen that the stronger the upper extremity muscle strength, the bat swing speed is the more positive correlation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.01a
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• pp.113-116
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• 2018

본 연구에서는 컴퓨팅 사고력 평가 도구 중 자기보고식 설문과 지필형 검사지인 비버 챌린지 간의 상관관계를 분석하고자 하였다. 두 평가 도구를 사용한 결과 간의 상관관계는 통계적으로 유의하지 않았다. 따라서 객관적인 측정을 위하여 자기보고식 설문에 대한 수정 및 보완이 필요하며, 비버 챌린지의 점수에 영향을 주는 난이도에 대한 고찰이 필요하다. 덧붙여 산출물 평가와 자기보고식 설문, 지필형 검사지 간의 상관관계를 분석할 필요가 있다.

• Journal of Wetlands Research
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• v.14 no.4
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• pp.503-518
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• 2012

Models estimating carbon budget at land surface are mainly interested in vertical flux of carbon. On the other hand, studies on horizontal flux are obviously lacked to confirm that relationship between the hydrological flux of organic carbon discharged from catchment and terrestrial carbon production, a relation between Total Organic Carbon(TOC) and Gross Primary Production(GPP) tried analysis through cross correlation. The best correlation structure is correlation between GPP and TOC of flow-weighted mean concentration from watershed without delay. Furthermore, cross correlation analysis was performed by consider periodicity. The correlation between TOC and GPP in summer was similar to correlation without periodicity. Therefore, correlation between GPP and TOC was most regulated by the correlation between GPP and TOC at summer. As a result, the vegetation carbon and organic carbon from watershed is recognized a close relationship on the seasonal. Therefore, future research is correlation analyzing between vegetation variables according season, GPP and TOC, we are expected to use quantitative understanding that horizontal flux flow of carbon from the surface.

• Korean Educational Research Journal
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• v.41 no.2
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• pp.1-23
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• 2020

The purpose of this study is to investigate the relationship between physical fitness factors and academic achievement among high school students. As a research method, cardiopulmonary endurance, flexibility, muscular strength, muscular endurance, quickness, BMI index, and academic achievement of high school students were measured for 641 male and female high school students in 2014 and 2017. The results of this study show that cardiopulmonary endurance is correlated with cardiopulmonary endurance factors (p<0.05), cardiopulmonary endurance is correlated with flexibility and quickness (p<0.05), and flexibility is correlated with academic achievement (p<0.01). Muscle strength was correlated with quickness and body fat (p<0.05), and muscle endurance was correlated with muscle strength, quickness, and BMI (p<0.05), and correlation between quickness (p<0.01), and there was a correlation between academic achievement (p<0.01). The conclusion of this study is that developing and implementing a more effective physical fitness program can contribute to the academic achievement and physical fitness of domestic high school students because various physical activities have a positive relationship with academic achievement in addition to physical fitness.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.5
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• pp.881-888
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• 2020

In this paper, in order to improve the degraded BER performance of the stronger channel user in non-orthogonal multiple access(: NOMA) with interactive mobile users, we propose the negative correlation bit-to-symbol(: B2S) mapping. First, the closed-form expression for the BER of the negative correlation B2S mapping receiver is derived, and then it is shown that the BER of the negative correlation B2S mapping receiver is improved, compared with those of the ideal perfect successive interference cancellation(: SIC) receiver and positive correlation receiver. Additionally, based on the analytical expression, signal-to-noise(: SNR) gain is calculated, and the superiority of the negative correlation B2S mapping receiver is validated.

• Journal of the Korean Society of Physical Medicine
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• v.6 no.4
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• pp.415-424
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• 2011

연구목적 : 본 연구는 볼기신경 뿌리병증 환자에 대하여 역학적 스트레스인 압박과 긴장을 가하여 환자의 증상을 나타내 신경동역학적 검사간의 상관관계를 수행하였다. 연구방법 : 신경동역학검사인 하지직거상검사, 수정된 활시위검사, 슬럼프검사에 앞서 방사선과 전문의에 의해 자기공명영상 판독을 실시하여 허리원반 이탈로 진단받은 다리쪽으로 방사통을 호소하는 21명의 환자가 참여 하였다. 수집된 자료는 질적변수에 따른 빈도와 비율은 교차분석표로 작성하였고, 신경동역학적 검사간의 상관관계를 검정하기 위해 피어슨의 카이스퀘어(Pearson's chi-square)을 시행하였다. 연구결과 : 허리 자기공명영상 결과, 증상에 대한 두 검사 간 교차표를 작성하여 하지직거상검사와 수정된 활 시위검사, 하지직거상검사와 슬럼프검사는 유의한 상관관계는 없었지만(p>.05) 수정된 활시위검사와 슬럼프검사는 통계적으로 유의한 상관관계(p<.05)가 제시되었다. 결론 : 볼기신경 뿌리병증 환자에 대한 신경동역학검사인 수정된 활시위검사와 슬럼프검사가 통계적으로 유의한 상관관계를 나타내는 증거를 제공하였다. 신경동역학 검사는 신경계에 역학적 스트레스 즉, 긴장, 활주, 또는 압박 자극을 주어 신경기능이상 환자에 대해 적절한 검사를 제시하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.4C
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• pp.321-328
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• 2010

A Rayleigh fading channel simulator that realizes given correlation properties between two channels such as downlink/uplink is described. We propose an improved channel simulator that provides more accurate match between reference correlation and simulated one. The proposed channel simulator is based on a sum-of-sinusoids (SOS) method that handles finite sums of weighted sinusoid functions. SOS method is widely accepted in generating fading signals and obtain the exact match with the reference model if infinite number of weighted sinusoids are used. The proposed channel simulator minimizes mean-square-error (MSE) to obtain a close matched correlation properties.

• Journal of the Korea institute for structural maintenance and inspection
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• v.7 no.3
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• pp.231-239
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• 2003

Many foundation jobs have been designed and constructed in Korea with the sole information obtained from the SPT. The use of the CPT to estimate equivalent SPT values is becoming a common application for foundation design. The relationship between the CPT and the SPT has been determined in a number of studies over the past three decades. However a few papers have been published on the relationship between the CPT and the SPT in residual soil. Due to the large variation in published correlations between qt and N in residual soil, local correlations should be developed wherever possible. CPT tests have been carried out in the residual soil classified by SM in accordance with USCM and compared with SPT. Value of qt/N = 0.3 have been suggested for residual soil in Korea.