• The Journal of Korean Institute of Communications and Information Sciences
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• v.37C no.11
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• pp.1077-1083
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• 2012

The jamming countermeasures in GNSS includes anti-jamming technique and jammer localization technique. In both techniques, direction of jamming signal is important and generally the MUSIC algorithm is used to find the direction of jamming signal. The MUSIC is super-resolution algorithm for detecting incident direction of signal. But, the search time of MUSIC algorithm is too long because all candidates of incidence angle are searched. This paper proposes the new method that has less computational burdens and therefore faster than the conventional MUSIC algorithm. The proposed method improves performance speed by reducing unnecessary calculations. In the proposed method, the cost function of conventional MUSIC algorithm is decomposed into the sum of squares and if the partial sum of cost function is larger than the minimum cost function so far, then the candidate is rejected and next candidates are searched. If the computed cost function is less than the minimum cost function so far, the minimum cost function so far is replaced with newly computed value. The performance of the proposed method was compared with the conventional MUSIC algorithm using the simulation. The accuracy of the estimaed direction of jamming signal was same as the conventional MUSIC while the search speed of the proposed method was 1.15 times faster than the conventional MUSIC.

• Journal of the Korean Society of School Health
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• v.27 no.3
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• pp.148-158
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• 2014

Purpose: This study investigated the impact of sense of humor and music on the self-confidence of elementary students with general characteristics. The research found differences between the impact of each participants' sense of humor and sense of music on self-confidence. Methods: The participants of this study comprised 265 children who were 3rd to 6th grade elementary students who lived in Seoul, Gyeonggi-do and Gangwon-do. The participants reported their sense of humor sense, sense of music and self-confidence on three separate questionnaires. The data were analyzed by means of descriptive statistics and t-test, ANOVA and Kruskal-Wallis test. Results: The results showed an increase in self-confidence related to the higher income status, young aged mothers and birth order. Moreover, academic achievement was shown to relate to a high sense of humor and music, and self-confidence. The elementary students with a sense of humor and music and self-confidence showed a significant positive correlation with each other. Conclusion: The above results of this study can be utilized as a source in the development of programs applying sense of humor and music to improve the self-confidence of elementary school students.

• Journal of Korean Biological Nursing Science
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• v.13 no.1
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• pp.44-52
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• 2011

Purpose: The purpose of this study was to examine the effects of a preference music therapy on anxiety and pain of cystoscopy. Methods: This study was performed using the quasi-experimental study design with non-equivalent control group pre-test and post-test. Total of 76 adult clients admitted to a tertiary hospital located in Daegu, South Korea were selected by convenience sampling 19 in the control and 57 in the experimental group. The data were analyzed by $x^2$, t-test, paired t-test, and repeated measures ANOVA using SPSS 17.0. Results: Implementing a preference music therapy was found to be effective in reducing anxiety level before cystoscopy in the present study. However, there were no significant effects of this preference music therapy in reducing pain and anxiety during cystoscopy. In addition, there were no significant effects of a preference music therapy on the patients' satisfaction of the anxiety, discomfort, and pain relieving. Conclusion: The findings support that implementing a preference music therapy may reduce anxiety before the cyctoscopy procedure. Therefore, it can be suggested that a preference music therapy needs to be consider-ed as a regular nursing intervention to reduce patient anxiety level before cystoscopy.

• Journal of Korean Academy of Nursing
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• v.33 no.6
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• pp.693-704
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• 2003

Purpose: The purpose of this study was to determine whether a relaxing music was effective in reducing stress response of patients admitted to a coronary care unit with the diagnosis of acute myocardial infarction. Method: The research design was the chosen convenience sample of a randomized control group pre-posttest quasi-experimental design. Forty patients, 20 for an experimental group and another 20 for control group. The study was to provide the patients three different kinds of relaxing music. The experimental group listened to relaxing music for a 20-minute one time a day for 3days. The control group was just provided with a 20-minute period of rest. Test for hypothesis was done by repeated measured ANOV A. Result: The experimental group which received relaxing music showed a significantly lower level of electrodermal response, myocardial oxygen consumption and respiration rate, and a higher level of peripheral skin temperature than the control group. The experimental group which received relaxing music showed a significant reduction in state anxiety than the control group. Conclusion: The results showed that relaxing music is an effective nursing intervention for reducing physiologic and psychologic stress response of the patients with acute myocardial infarction in a critical intensive care unit.

• The Journal of Korean Academy of Sensory Integration
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• v.3 no.1
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• pp.57-65
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• 2005

Objective : The purpose of this study was to investigate the effect of sensory stimulation for static balance on normal children. Sensory input was consisted of colors, and music tempo stimulation. Methods : Participants were consisted of 20 normal kindergarten children ranging in age from six to seven years. The static balance was tested by a BPM(Balance Performance Monitor). In this study one-way ANOVA was used and the statistical significance level of results was determined at 0.05. Results : 1. According to color stimulation, there was no significant difference in static balance among red, yellow, green(p>0.05). 2. According to music tempo stimulation, there was no significant difference in static balance, among the high music tempo and low music tempo children in a general environment(p>0.05). 3. However, both green color and low music tempo stimulation have a little effect on static balance on normal children. Conclusion : These results indicate the possibility that the application method of green color and low music tempo stimulation may help in the improvement of static balance for the disabled children. This study will be used as the foundational data of therapeutic environment for the disabled children.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.11a
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• pp.268-272
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• 2007

As Music Room in Art School is mainly for exercise of musical instrument rather than any lecture or music appreciation, it should be designed and constructed in consideration with Acoustic Condition on the preferential basis. However, in case of Music Room in Art School that has been built already or latest newly constructed, since it was designed and constructed without any reflection of Acoustic Characteristics, it appeared as inadequate for them to enjoy music appreciation or performance activity. On such view point, this Study has examined the physical Acoustic Characteristics for the subjects on those Music Rooms of Art Middle School, Art High School, Art College built in Cheonbuk Province, and it is deemed that the material grasped in such way could be utilized as the valuable data enables to improve Acoustic Performance at the time when designing and construction or renovation for Music Room hereafter.

• Journal of Korean Medicine for Obesity Research
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• v.8 no.2
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• pp.15-23
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• 2008

The purpose of this study is to introduce oriental medicine music therapy related to the treatment of obesity. Obesity is caused by deficiency of the spleen, retention of phlegm, stagnation of liver Gi. According to the patients' state, the musical instruments should be chosen. In case of deficiency of the spleen, retention of phlegm, and stagnation of liver Gi, the obese patients beat pulsatile instruments to Earth-Gi rhythm, Fire-Gi rhythm, and Wood-Gi rhythm respectively. In addition to beating the musical instrument to the Five Phases rhythm, an oral sound therapy, relieving constraint therapy, and dispersing therapy can be performed. This study describes the theory of oriental medicine music therapy that has a good possibility as a new method of oriental medical treatment. It is necessary to study in measuring the effects after oriental medicine music therapy from now on.

• Journal of Korean Library and Information Science Society
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• v.30 no.1
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• pp.31-60
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• 1999

The purpose of this study is to investigate the problems concerning music schedules of KDC. The object is especially arrangement of 670 music in the 4th edition of KDC. In this study, therefore, the development of 670 music division from the 1st edition to the 4th edition of KDC were examined first as the backgrounds. Then the expansion aspects and their problems of 670 music division in the 4th edition of KDC were analyzed. And based on the findings, some suggestions to solve the problems were proposed. These problems of music division of KDC originate in the lack of professional understanding of music, structural problem of KDC itself, and very comprehensive and contradictory revision policy. To make the KDC improved as standard classification scheme of Korea, mutual cooperation of the classifiers and specialists in music is inevitable.

• Korean Journal of Child Studies
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• v.36 no.6
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• pp.101-123
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• 2015

The purpose of this study was to examine how musical pieces were presented in music activities on the Teacher's Guidebooks in order for young children to experience the aesthetics of music. For the purposes of this research, the ways to address musical elements and the music activities of 100 musical works in the Teacher's Guidebooks were analyzed. In addition, the aesthetic qualities of the same musical pieces presented by the sound sources were examined. Following this, an analysis of the relationship between the elements used and the aesthetic qualities of the music was carried out by comparing the previous analysis. The results were as follows. First, melody (38.1%), rhythm (29.0%), and timbre (20.5%) were the most utilized elements of musical works in such activities. Secondly, the most utilized method to present music activities was singing. Among 100 musical pieces, 74 pieces used singing activities. Next, the most audible aesthetic quality from sound sources was that of the melody, presented in 69 pieces (46.6%) among 100 musical works. Lastly, among 100 musical works, at least 64 pieces were matched with more than one, whereas 34 did not.

• Journal of Korean Biological Nursing Science
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• v.15 no.4
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• pp.247-256
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• 2013

Purpose: This study aimed to determine the effects of listening to music on pain and vital signs of critically ill patients with ventilatory support in intensive care units during nursing treatment (changes of posture and tracheal suction). Methods: The experimental treatment was to use an mp3 player and a speaker to let them listen to classical music by Mozart during nursing treatment. To determine the effects of music intervention, pain (Critical-Care Pain Observation Tool-K) was used. The data analysis was carried out by using PASW Statistics 20.0. Results: Hypothesis "The scores for pain would differ between the experimental group provided with music intervention during nursing treatment, and the control group" was supported. Conclusion: Application of music intervention during nursing treatment for critically ill patients with ventilatory support in intensive care units was found to be effective in reducing pain. Therefore, music intervention during nursing treatment for critically ill patients with ventilatory support can be used as non-pharmaceutical nursing intervention to reduce pain for the patients.