• Proceedings of The Korean Cleft Lip And Palate Association
• /
• 2003.06a
• /
• pp.46-46
• /
• 2003

• Proceedings of the Korea Contents Association Conference
• /
• 2004.05a
• /
• pp.109-120
• /
• 2004

As the Korea history have developed and media have changed, Korea commercial animation assumes different aspects, formative and technical image from production method. But, both will advance suit each characters base on good point and characteristic of Korea commercial animation.

• Computational Structural Engineering
• /
• v.17 no.1
• /
• pp.34-38
• /
• 2004

국내에서 2003년 9월 12일 태풍 매미는 부산 지역에서 많은 재산상의 피해와 아울러 강풍으로 인한 건물의 진동으로 인하여 거주자의 사용성문제가 발생하였다. 또한 신문 보도에 의하면 15층 이상의 고층에 거주하는 시민들은 강풍으로 인한 진동으로 인하여 극도의 공포감에 시달린것으로 알려져 있다. 부산 남구 용호동 L아파트 24층 거주자의 경우는 2003년 9월 12일 오후 10시경부터 아파트 지하 주차장으로 2시간여 동안 대피했다. 천장의 전등이 좌우로 흔들리고 변기 속의 물이 출렁거릴 정도로 아파트가 심하게 진동하였기 때문이다. 아파트의 진동으로 인한 어지러움도 호소하는 경우도 있었다.(중략)

• 한국약용작물학회:학술대회논문집
• /
• 2012.05a
• /
• pp.183-184
• /
• 2012

• Proceedings of the KSLP Conference
• /
• 1998.11a
• /
• pp.211-212
• /
• 1998

소리란 인간만이 가지는 특유한 발성구조에 의해 생성되는 음으로서 주로 언어소통을 목적으로 발성된다. 소리의 생성은 일정한 성문하압과 성대의 긴장 및 내전운동이 형성되면 공기가 성대를 통과하면서 성대가 진동하여 발생되며 발성된 음은 후두, 인두 구강등의 발성기관에서 공명되고 증폭되므로서 특이한 음색을 가진 소리로 발생되는 것이다. 그 중에서 노래소리란 이러한 발성기관의 종합적이고 이상적인 조화에 의해 발생되는 소리의 극치이다. 그러나 이러한 발성기관이 이상적으로 조화되지 않을 경우 소리의 변화 및 성대에 병변이 초래되어 치료를 요하는 경우도 있다. (중략)

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.11 no.7
• /
• pp.1168-1175
• /
• 2000

To observe propagation characteristics of microstrip lines on YIG film, the FDTD is employed. For various GGG substrate and YIG film, the dispersion curves and the bandwidth of the cutoff region are calculated. And the distribution of the electric fields of the transverse plane underneath the conductor strip is obtained near upper and lower cutoff frequency. The results of two and three dimensional FDTD for the upper cutoff frequency are compared with spectral domain approach(SDA). A good agreement is verified, although there is relative error 6% between the results calculated by the two methods.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
• /
• v.14 no.1
• /
• pp.16-25
• /
• 2003

Background and Objectives : Electroglottography(EGG) is a non-invasive method of monitoring the vocal cord vibration by measuring the variation of physiological impedance across the vocal folds through the neck skin. It reveals especially the vocal fold contact area and is widely used for basic laryngeal researches, voice analysis and synthesis. The purpose of this study is to investigate the effectiveness of EGG parameters in differential diagnosis of laryngeal cancer. Materials and Methods : The author investigated 10 laryngeal cancer and 25 benign laryngeal disease patients who visited at the Department of Otolaryngology, Pusan National University Hospital. The EGG equipment was devised in the author's Department. Among various parameters of EGG, closed quotient(CQ), speed quotient(SQ), speed index(SI), Jitter, Shimmer, Fo were determined by an analysis program made with MATLAB 6.5$^{\circledR}$(Mathwork, Inc.). In order to differentiate various laryngeal diseases from pathologic voice signals, the author has used the electroglottographic parameters using the neural network of multilayer perceptron structure. Results : SQ, SI, Jitter and Shimmer values except those of CQ and Fo showed remarkable differences between benign and malignant laryngeal disease groups. From the artificial neural network, the percentage of differentiating the laryngeal cancer was over 80% in SQ, SI, Jitter, Shimmer except for CQ and Fo. These results indicated that it is possible to discriminate the benign and malignant laryngeal diseases by EGG parameters using the artificial neural network. Conclusion : If parameters of EGG which can reveal for the pathology of laryngeal diseases are additionally developed and the current classification algorithm is improved, the discrimination of laryngeal cancer will become much more accurate.

• Analytical Science and Technology
• /
• v.33 no.6
• /
• pp.262-273
• /
• 2020

A fluorine content analysis method for krill oils, which is a representative oil formulation in foods, was developed in compliance with the Korea Food and Drug Ministry's "Guidelines for Validation of Testing Methods Related to Food". Using this method for krill oils, the presence of impurities was evaluated via combustion-ion chromatography (C-IC). A review of published technical data on fluorine in krill oils showed that while the traditional wet potentiometric method was typically used, it was not reliable. Moreover, there was no food testing/analysis laboratory in Korea to perform a fluorine test analysis on such an oil matrix. Therefore, we identified halogen (fluorine) tests, developed to national and international standards, and developed a test method suitable for krill oils by selecting a C-IC method that is sufficiently applicable to the oil matrix. Based on the characteristics of the oil matrix, the optimal test method was established through various experiments by reviewing the concerns related to loss and interference in the preparation and introduction of samples. The fluorine content test was carried out on 11 krill oil products that were purchased online. Most products (with the exception of only one) were found to contain less than the reporting limit obtained by the test method. Furthermore, after additional testing, a high fluorine content of approximately 2,000 ~ 3,000 mg/kg was detected on the krill surface, although the concentration varied depending on the area of the krill. A comparison with samples from two ISO/IEC 17025 testing laboratories confirmed that there was no significant difference in the statistical analysis results obtained by ANOVA among the three laboratories. A testing guide for fluorine content analysis was completed.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.32 no.7B
• /
• pp.463-471
• /
• 2007

Because of MANET's dynamic characteristic, the hidden node problem can happen. Thus it must use with distributed channel access. In Ad hoc networks, carrier sense multiple access with collision avoidance(CSMA/CA) is one of the most widely used medium access control(MAC) schemes for asynchronous data traffics. However, CSMA/CA could not guarantee the quality of multimedia traffics. CSMA is a contention based protocol. Therefor once a node gets a channel, it can momopolze. Thus the fairness problem with channel starvation will happen. We will propose a new MAC protocol to guarantee QoS for multimedia data in ad hoc networks.

• Proceedings of the KIEE Conference
• /
• 2004.07c
• /
• pp.1851-1853
• /
• 2004

The important consideration in laboratory designing and construction of the artificial pollution testing facilities including 300kV, 1800kVA AC test system, which enable to test and evaluate the UHV dielectric performance of power insulators up to transmission class, has been dealt in this paper. To evaluate the performance characteristics against contamination for various power installation, especially for the insulators and kinds of bushings, brief investigation and an analysis of test objects and related international codes and standards have been conducted. With the special consideration concerning other matters in designing of these testing facilities have been described with the fixed ratings and references.