인터넷 폭주제어 메카니즘의 성능 분석

이병곤,송화선,김주영,정영준 강원대학교 정보통신연구소 2002 정보통신논문지 Vol.6 No.-

The congestion control is one of most important factors to maintain QoS and to provide reliable services in Internet applications. This paper has studied Internet flow controls and discussed the characteristics of proposed congestion control mechanisms. This paper has analyzed their characteristics of the optimum parameters for congestion controls in respect with fairness and service throughput. Also this paper discusses how the offensive UDP traffics produce the performance degradation of TCP traffic services in congestion environment.

의료기관의 방사선 검진시 방어의 관리실태 조사

김학곤 지산간호보건전문대학 1997 지산간호보건전문대학논문집 Vol.15 No.-

TMN과 TINA 기반의 통합 망관리 시스템

김주영,이병곤,정영준,송화선 강원대학교 정보통신연구소 2000 정보통신논문지 Vol.4 No.-

This paper presents an optimum model to construct a TMN and TINA based integrated network management system. This proposed model provides efficient and reliable interoperability between heterogeneous networks and systems along with maintaining transparency and scalability among TINA and presents an optimum gateway scheme with comparison of their operational characteristics. As a result of this study, we present a distributed network management system based on TMN and TINA and discuss operational scenario.

Effect of Salinity on Lignin and Hydroxycinnamic Acid Contents in Rice

Seung Gon Wi,Jae-Sung Kim,Jin-Hong Kim,Myung Hwa Baek,Dae-Hwa Yang,Myung Chul Lee,Byung Yeoup Chung 韓國作物學會 2004 Korean journal of crop science Vol.49 No.5

The production of sweet (su) and super sweet corns (sh2) has been economically feasible in Korea in recent years. Major factors limiting super sweet corn production are low germination and low seedling vigor. Since seed quality is closely related to seed maturity, the optimum harvest time for the seed production of sweet and super sweet corns was studied and the quality of seeds with varying maturities was investigated in 2001 and 2002 cropping seasons. The parents of the sweet corn seeds were Hybrid Early Sunglow and 'Golden Cross Bantam 70' and those of super sweet corn were Xtrasweet 82 and 'For-tune'. Seeds were harvested at 21, 28, 35, 42, 49, and 56 days after silking (DAS). As the seeds developed, seed weight of sweet corn increased and the seed moisture content decreased faster than that of super sweet corn. Germination rates of sweet corn seeds harvested 21 and 28 DAS at 25~circC and emergence rates in the cold soil test were significantly lower than those of seeds harvested after 42 DAS in both years. Although the germination rates of super sweet corn seeds with varying maturities showed similar patterns as sweet corn seeds at 25~circC , the emergence rate of super sweet corn seeds in cold soil test continuously increased with seed maturity. This suggests that seed quality of super sweet corn should be tested in a cold soil test to estimate field emergence. As the seeds developed, leakage of total sugars and electrolytes from the both sweet and super sweet corn seeds decreased up to 42 or 49 DAS. The α-amylase activities of both sweet and super sweet corn seeds increased with seed maturity from 21 to 35 or 49 DAS depending on genotype and year. The optimum harvest time for the seed production of sweet corn was 42 DAS and 49 DAS for super sweet corn considering emergence rate and plumule dry weight in the cold soil test, leakage of sugars and electrolytes from the seeds, and α-amylase activity.

유방암환자 전초림프절의 유방 림프신티그라피에 관한 연구

김화곤(Hwa-Gon Kim),김창수(Chang-Soo Kim),김명준(Myung-Jun Kim) 대한방사선과학회(구 대한방사선기술학회) 2006 방사선기술과학 Vol.29 No.2

  과거 유방암 환자에서 대부분을 수술로 불필요한 액와림프절 절개술을 하였지만, 그 결과로 부작용이 발생하였다. 본 논문에서는 유방암 환자에게 <SUP>99m</SUP>Tc-Tincolloid를 이용하여 수술 전 유방림프절 검사를 먼저 시행한뒤 처음 나오는 전초림프절을 영상화한 뒤 전초림프절의 전이 여부에 따라 수술범위를 달리 결정함으로써 환자의 수술 시간 및 수술 후의 부작용 최소화가 목적이다. 논문의 실험 결과는 실험대상 20명의 환자 중 15명에서는 액와림프절 절개술을 시행하지 않아도 되기에 수술로 인한 부작용을 줄일 수 있다. 그러나 아직까지 표준방법, 즉 방사성의약품 주사부위, 방사선량, 주사량, 마사지여부, 림프신티그라피 시행여부 등이 결정되지 않았으므로, 환자에 대한 고통경감과 부작용을 최소화 하고 수술부위를 최소화하기 위해서는 유방암 림프절검사법이 유용할 것이라 생각된다.<BR>  실험의 대상이 되는 환자는 초음파, 유방촬영술, 생검에서 유방암 진단을 받고 수술할 예정인 환자 20명으로, 환자의 연령 범위는 31∼71세로 평균 연령은 45.4세이며, 임상 병기 Ⅰ이 9명, 임상병기 Ⅱ가 11명이다. 실험 장비로는 전초림프절을 묘출시켜주는 추적자로 <SUP>99m</SUP>Tc-Tincolloid(Amesham)과 전초림프절의 위치를 찾는 장비로 Micro Probe: Neoprobe 2000(이하 감마 프로브), 영상 묘출 장비로 MS-Ⅱ Gamma Camera: SIEMENS (이하 MS-II Gamma Camera)가 사용되었다. 실험 방법은 3가지 방법을 사용하며, 그 중 하나를 선택해 전초림프절 검사 및 수술실에서 감마프로브를 이용하여 생검을 실시한 결과의 20명 모두에서 전초림프절을 영상화 했다. 그리고 감마프로브로 전초림프절을 찾아 조직 생검 결과 20명 중에서 전초림프절의 전이가 발견된 환자는 5명이다. 본 실험에서 전이가 발견된 환자 5명을 다시 액와림프절을 생검한 결과의 3명에서 액와림프절 전이가 발견되었다.   In the past, most patient of breast cancer suffered side effects due to the useless removement of Axillary Lymph Node, but there is no need to remove it because of the result in this study. The purpose of this study is to save surgery time and side effects after surgical operation for patients with breast cancer by making decisions of operation range for metastasis in first Stenosis Lymph Node using the <SUP>99m</SUP>Tc-Tincolloid Scintigraphy and the Micro Probe for radioisotope. As a result of this study, 15 among 20 patients became objects of this study could reduced side effects for operation because there were no axillary lymph node operations. However there is no standard for method of this treatment. It should be standardize where inject point is, how much <SUP>99m</SUP>Tc-Tincolloid should be injected(radioactivity value), and the need of massage and Lymph Scintigraphy. Nevertheless I think that this result of study is useful to reduce suffering and side effects from breast cancer and also we should try to do that continuously.<BR>  The objects for this study were 20 patients diagnosed as breast cancer by Ultrasonography, Mammography & Biopsy. The average of patient age was 45.4 years and its range was between 31 and 71 years. In case of clinical period there were 9 patients of Period Ⅰ and Ⅱ patients of Period Ⅱ. The equipment for this study were <SUP>99m</SUP>Tc-Tincolloid describing the Stenosis Lymph Node as a tracer, Micro Probe: Neoprobe 2000(the rest is Gamma Probe) tracing the location, and MS-Ⅱ Gamma Camera: SIEMENS(the rest is MS-Ⅱ Gamma Camera) describing the images. There were 3 methods for this study, after selecting one of those methods all 20 patients were performed Stenosis Lymph Node diagnosis & Gamma Probe in operation room. The result was that I imaged all the 20 patients, and seek the Stenosis Lymph Node by using Gamma Probe. Metastasis in Stenosis Lymph Node was 5 and Metastasis in Axillary Lymph Node was 3 between Metastasis in Stenosis Lymph Node cases. Finally 15 patients were also proved that Axillary Lymph Node was Positive and that means there was no Metastasis in Axillary Lymph Node.

진단용 방사선발생장치의 안전관리에 관한 규칙과 원자력법의 용어통일 개선 방향

김화곤(Hwa-Gon Kim),강세식(Se-Sik Kang),김창수(Chang-Soo Kim),박철서(Cheol-Seo Park) 대한방사선과학회(구 대한방사선기술학회) 2006 방사선기술과학 Vol.29 No.1

  진단용 방사선발생장치의 안전관리에 관한 규칙과 원자력법에서 사용되는 용어들이 일부 상이하게 기술됨으로서, 실무종사자들의 혼란을 막기 위해 본 연구를 실시하였다. 우리니라의 원자력법은 국제방시선방어위원회(ICRP)의 권고에 띠라 우리나라의 실정에 맞게 지속적으로 수정, 발전한 반면에, 진단용 방시선발생장치의 안전관리에 관한 규칙은 부분적인 수정함으로서, 용어의 혼란을 초래하게 되었다. 진단용 방사선발생장치의 안전관리에 관한 규칙과 원자력법을 비교하면 수정해야 할 사항들은 다음과 같았다.   1. 진단용 방사선발생장치의 안전관리에 관한 규칙과 원자력법에서 사용되는 용어와 단위가 다르다. 업무의 특성상 사용되는 특별한 용어를 제외하고, 공통으로 시용되는 용어의 통일은 반드시 필요하다. 비록 이원화된 방사선안전관리 체계일지라도 규제와 지도의 기준은 일원화되어야 할 뿐 아니라 방사선업무에 종사하는 자나 방사선안전관리 실무에 종사하는 자에게 혼란을 주어서는 바람직하지 못하다.   2. 진단용 방사선발생장치의 안전관리에 관한 규칙에는 다음의 규정이 추가되어야 한다.   1)환자와 병원 방문객에 대한 방사선방어   2)임신중인 여성환자의 방사선피폭제한   3)의료상피폭으로 인정되지 않는 자의 방사선피폭제한   4)임신 중인 여성 의료관계종사자의 피폭관리   The rules and terms are described different meaning, in this results the research is accomplished for preventing practical workers from confusion. Atomic law are kept up modification and development in our situation by the ICRP"s recommendation, on the other hand, the rules of diagnosis radiation equipment safety managements are modified partial, then resulted in confusion. The study was comparison between the rules of diagnosis radiation equipment safety management and atomic energy law, and the modification items obtained were as follows.   1. With each other different the terms and units are used. With the exception of special terms for affairs usage, it is needless to say that common term uniformity is standardized. The standardization of rules and guidance have not need to confusion radiological practical workers.   2. The following is omitted.   1) The radiation protection against tile patient and the hospital visitor.   2) Radiation dose limit of the woman patient who is in the process of becoming pregnant.   3) Radiation dose limit of the person who is not regarded as madical madical exposure.   4) The control of the exposure of pregnant of women at work.

Ultrastructural Changes of Cell Organelles in Arabidopsis Stems after Gamma Irradation

( Seung Gon Wi ),( Byung Yeoup Chung ),( Jin Hong Kim ),( Myung Hwa Baek ),( Dae Hwa Yang ),( Ju Woon Lee ),( Jae Sung Kim ) 한국식물학회 2005 Journal of Plant Biology Vol.48 No.2

Effect of Salinity on Lignin and Hydroxycinnamic Acid Contents in Rice

Wi Seung Gon,Kim Jae-Sung,Kim Jin-Hong,Baek Myung Hwa,Yang Dae-Hwa,Lee Myung Chul,Chung Byung Yeoup The Korean Society of Crop Science 2004 Korean journal of crop science Vol.49 No.5

The lignin contents between IR-29 and Pokkali were not significantly different in the absence of NaCl, but they were slightly increased at 40 mM NaCl. Although lignin contents were not relatively significantly different between salt treated and control plants, the total yields of alkaline nitrobenzene oxidation ranged from 17.4-20.0 mg/g of cell wall residue at 40 mM NaCl were significantly different compared with control plants (11.8-12.2 mg/g). The total amounts of ester-linked hydroxycin-namic acids in IR-29 were decreased from 14.5 to 9.9mg/g, while Pokkali is almost same levels (14.9-15.0 mg/g) under treated and control with 40 mM NaCl. In contrast, the total amounts of ether-linked hydroxycinnamic acids were increased from 9.4 to 13.9 mg/g together with an opposite trend in Pokkali as a decrease 10.9 to 8.8 mg/g under treated and control with 40 mM NaCl. These results revealed that IR-29 is more sensitive in response to 40 mM NaCl in terms of hydroxycinnamic acids than Pokkali.

A New Early-Heading and High-Yielding Forage Rye Cultivar "Okjeon"

Hwa Young Heo,Hyoung Ho Park,Kwang Geun Park,Maing Jung Kim,Jong Jin Hwang,Choon Ki Lee,Jung Hyun Nam,Jung Gon Kim,Young Up Kwon 한국육종학회 2003 한국육종학회지 Vol.35 No.4

‘Okjeon’ rye (Secale cereale L.) was developed by the National Crop Experiment Station (NCES). It was released in 2001 because of its excellent earliness and yield potential. ‘Okjeon’ was developed from an open pollination with 20 rye lines in 1984. Subse

A New Waxy Wheat Cultivar "Shinmichall" with Stress Tolerance

Hwa Young Heo,Chul Soo Park,Moon Suk Kang,Hyung Ho Park,Chun Kee Lee,Hong Sik Kim,Bon Chul Goo,Jong Chul Park,Kwang Geun Park,Young Keun Cheong,Jung Gon Kim 한국육종학회 2007 한국육종학회지 Vol.39 No.3

“Shinmichal1”, a waxy red winter wheat (Triticum aestivum L.) cultivar was developed by the National Institute of Crop Science, RDA. It was derived from the cross “Alchan”/“Chal2”during 1997. “Alchan” is a soft red winter wheat with high yield and good noodle quality. “Chal2” is a waxy wheat line crossed by “Kanto107” (Wx-A1b and Wx-B1b) and “BaiHuo” (Wx-D1b). “Shinmichal1” was evaluated as “Suwon306” in Advanced Yield Trial Test in 2002. It was tested in the regional yield trial test between 2003 and 2006. “Shinmichal1” is an awned, semi dwarf and soft red winter wheat, similar to “Uri” (check cultivar). The Heading and maturing date of “Shinmichal1” were similar to “Uri”. Culm and spike length of “Shinmichal1“ were 79 cm and 7.8 cm. “Shinmichal1“ had greater test weight (802 g) and lower 1,000-grain weight (31.8 g) than “Uri” (782 g and 35.2 g, respectively). It has resistance to winter hardiness, wet-soil tolerance, lodging tolerance and moderate post-harvest sprouting damage. “Shinmichal1” had higher flour yield (66.2%), ash (0.73%), protein (10.9%) and SDS sedimentation volume (40.7 ml) than “Uri” (64.7%, 0.53%, 9.3%, and 32.5 ml, respectively) and similar flour color to “Uri”. “Shinmichal1” had higher dough extensibility and lower dough strength than “Uri”. It is 5.2% of amylose content and had typical waxy starch pasting properties. Average yield of “Shnmichal1” in the regional adaptation yield trial was 5.24 MT ha-1 in upland and 5.58 MT ha-1 in paddy field, which was 3% and 8% lower than those of “Uri” (5.39 MT ha-1 and 6.09 MT ha-1, respectively). “Shinmichal1” would be suitable for the area above the daily minimum temperature of -10℃ in January in Korean peninsula.