• The Journal of the Acoustical Society of Korea
• /
• v.25 no.5
• /
• pp.197-206
• /
• 2006

Vibration of string is transmitted to the front plate through bridge to cause resonance of the instrument body in viol family string instruments. Therefore. the properties. geometrical shape. and positioning of the bridge are expected to have some effect on the sound color. In this study the strain and the stress in the bridge. and the force exerted on the top plate by the bridge as the string vibrates the bridge in cello are calculated through simulation based on the theory of elasticity. The modes of vibration and the characteristic frequencies are also found. Furthermore. the effect of geometric shape of bridge on sound color is studied in terms of frequency response. The results of this study show that the vibration characteristics of bridge is quite complex and the properties and the geometrical shape of bridge have significant effect on sound color, and therefore. the sound color of a cello can be controlled by changing the geometrical shape of bridge.

• The Journal of the Acoustical Society of Korea
• /
• v.27 no.8
• /
• pp.395-402
• /
• 2008

In viol family string instruments vibration of string is transmitted to the front plate through bridge to cause resonance of the instrument body. Therefore, the vibration of string is the source of sound and the properties, the structure, and the boundary conditions of string are expected to have significant effect on the sound. In this study the vibration of strings in cello when one end is fixed and the other end is pressed with finger tip is studied and compared with the case of the fixed-fixed ends. The result of analysis and experiment shows that the vibration of the string that is fixed at one end and pressed with finger tip at the other end is significantly influenced by the contact condition of the string with the finger tip and also quite different from that of the fixed-fixed string, It also suggests that the sound of a cello can be significantly influenced by the contact condition between the string and the finger tip in the fingered string.

• Proceedings of the Korea Association of Information Systems Conference
• /
• 1997.10a
• /
• pp.577-585
• /
• 1997

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.30 no.5C
• /
• pp.305-312
• /
• 2005

Three classification algorithms are tested using musical instruments. Several classification algorithms are introduced and among them, Bayes rule, NN and k-NN performances evaluated. ZCR, mean, variance and average peak level feature vectors are extracted from instruments sample file and used as data set to classification system. Used musical instruments are Violin, baroque violin and baroque cello. Results of experiment show that the performance of NN algorithm excels other algorithms in musical instruments classification.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.30 no.2
• /
• pp.131-139
• /
• 1985

Breeders have concerned with the nature of gene action controlling the duration of grain filling period to combine early maturity and acceptable grain yield to fit wheat into multiple cropping systems. The 4 x 4 complete diallel set of F$_1$, F$_2$ and 1/2 (BC$_1$ + BC$_2$) in crosses of winter and spring wheat cultivars was made to determine the nature of gene action involved for duration of grain filling period. Using the Jinks-Hayman model, no maternal effects were noted nor were any non-allelic interactions observed for total duration of grain filling and lag period. The actual grain filling period was influenced to some degree by such interactions. The spring cultivars Red Bobs and Siete Cerros also appeared to have more dominant genes for longer total duration of grain filling and lag period. In contrast, the winter parents Yamhill and Hyslop had more dominant genes for the longer actual grain filling period. The genes appeared to be independently distributed among the parents.

• Parasites, Hosts and Diseases
• /
• v.43 no.4 s.136
• /
• pp.129-134
• /
• 2005

To determine the status of Enterobius vermicularis infection among children living on western and southern coastal islands of the Republic of Korea, children (3-10 years) in 39 kindergartens and primary schools were examined using the cello-tape anal swab method, during July and August 2000. Of 1,661 children examined, $307(18.5\%) $were found to be positive for E. vermicularis eggs. The highest infection rate $(59.3\%)$ was found in a kindergarten and a branch school of Shinyang primary school on Chujado, Jeju-do (Province), Remarkable differences in egg positive rates were observed in different localities. The egg positive rate for boys $(21.3\%)$ was significantly higher than that of girls $(15.4\%)$ (P=0.02). However, positive rates were not significantly dependent on age. The results of the present study show that E. vermicularis infection is highly prevalent among pre-school and primary school children living on the western and southern coastal islands of the Republic of Korea, and indicate the need for efforts to control this infection.

• CELLMED
• /
• v.6 no.3
• /
• pp.19.1-19.3
• /
• 2016

Jindo Ssitgimgut has been known as a funeral ritual for a long time in Korea. However, there is no study for music therapy on anxiety disorder. The aims of this study were to argue that Oral sound Daseureum of Jindo Ssitgimgut may have meaningful effect on anxiety disorder. Jindo Ssitgimgut is literally a cleansing soul. Jindo Ssitgimgut is designated as the Intangible Cultural Property No. 2 by the Korean government. Jindo Ssitgimgut is transmitted from generation to generation, not the descent of God. So, the accent is on art and one's sincere sympathy. So, with careful listening Youtube, this music Daseureum exhibits an exquisite balance between the human voice and the sounds do the instruments. The author think a good combination of his voice, Jing (Korean gong), and Ajaeng (Korean cello) can help with anxiety disorder.

• Parasites, Hosts and Diseases
• /
• v.44 no.3
• /
• pp.247-249
• /
• 2006

In an attempt to determine the prevalence of pinworm infection, the egg positive rate of Enterobius vermicularis was examined using the adhesive cello-tape anal swab method in 1,512 preschool children sampled from a total of 20 kindergartens in Cheongju city, in November to December of 2004 (951 children from 13 kindergartens) and September to October of 2005 (561 from 7 kindergartens). The overall egg positive rate was found to be 7.9% (119/1,512); 9.3% (73/784) for boys and 6.3% (46/728) for girls, respectively. The 5-year age group evidenced the highest egg positive rate (10.9%, 47/430) among the examined age groups. As compared to those reported from previous works (ranged from 9.2 to 26.1 %), the prevalence of E. vermicularis in the Cheongju city area is relatively low.

• Parasites, Hosts and Diseases
• /
• v.35 no.3
• /
• pp.215-218
• /
• 1997

An unusual over-gravid female of Enterobiw uemiculcris was recovered from a 15-month old child by cello-tape anal swab. The patient resided in Inchon and complained of severe anal itching. The worm measured 7.8 mm in length and 0.5 mm in width, and retained typical morphologic features of E. uemiculnris such as cephalic alas and a sharply pointed posterior end. In this gravid female, peculiarly. the uterus was tremendously distended, and about 99% of the whole body length was completely packed with a great number of eggs. Other internal organs were difficult to observe. This paper describes a peculiar over-gravid female of E. vemiculcyis.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 1998.06a
• /
• pp.387-390
• /
• 1998

New Ag-deposited graphite anodes were developed using wet chemical reduction methods for depositing Ag metal onto graphite particles. In this paper, we investigated X-ray diffraction pattern and charge-discharge behavior for Ag-deposited graphite anode. The Lithium ion cello using Ag-deposited graphite anode showed a high average discharge voltage of 3.6∼3.W and a excellent cycle ability than that of conventional graphite. Little capacity loss in this battery may be due to the highly durable Ag-deposited graphite anodes.