http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이동전화 혼신개선을 위한 주파수 재사용 패턴에 관한 연구
박창렬,문병현 대구대학교 과학기술연구소 1995 科學技術硏究 Vol.2 No.1
주파수 자원이 한정된 열악한 무선환경하에서 오늘날 AMPS방식의 셀룰러 이동전화 시스템에서는 급증하고 있는 가입자 수요에 대처하기 위해서는 효율적인 셀 계획 및 채널할당이 무엇보다도 중요하다. 특히 트래픽 밀집지역인 대도시의 경우 급증하는 이동전화 가입자 수요에 대처하기 위해서 시스템 용량만을 고려한 주파수 재사용패턴을 사용한다면 주파수 간섭으로 인한 혼선문제가 더욱 심각해질 수 밖에 없다. 본 논문에서는 지형과 도심환경을 고려한 셀룰러 이동전화 시스템에서 N=7과 N=5의 주파수 재사용 패턴을 사용하였을때 동일채널간섭비를 대구광역시에 적용 비교 분석하였다.
문정옥,김병렬 仁荷大學校 스포츠科學硏究所 1998 論文集 Vol.10 No.-
This study find out the character of anxiety for children's physical education class, with due regard to interaction with grade factor and sex factor, then make compare and verify anxiety point of pre-class in Korean language, Mathmatics, Physical education(difficulty-high), Physical education(difficulty-low), Moral as th detail work study. For test of anxiety level pre-class by subject, use to STAI Ⅱ, and pre-class five class goal show and measurement. Measurement data operated vitrificate of statistical analysis and get following conclusions. 1. In pre-class anxiety level, Physical education class(difficulty-high) was highest, the next Korean language, Physical education class(difficulty-low) and Moral were lowest. 2. Anxiety score of Mathematics pre-class was not a difference mean between five, six grade, in Moral showed that six gade higher anxiety score than five grade. 3. Anxiety score Korean Language, Mathematics, Physical education (difficulty-low), Moral pre-class were not difference mean between boy and girl children, in Physical education(difficulty-high) show that girl children were higher anxiety score than boy children. 4. As anxiety score of children pre-class was not difference mean from grade factor, sex factor and subject factor, there was not interaction in three factors.
장경수,신호진,이상호,김병기,신동렬 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.2
Queueing analysis, in general., has the intrinsic problem of large state space dimension and complex computation. In fact, the petri net is a graphical and mathematical model. It has been used for the modeling of various applications, in particular, manufacturing systems. It can deal with parallelism, concurrence, deadlock avoidance, and asynchronism. Currently it has been applied to the performance of computer networks and protocol verifications. This paper presents a technique for modeling and analyzing queueing model using stochastic activity networks (SANs). And then some examples are showed for the verification of the technique presented in this paper.
小麥의 出穗後 日數에 따른 小穗段別 粒重의 品種間 差異
Byung Ryeol Sung(成炳列),Kyu Bok Youn(延圭復),Yong Woong Ha(河龍雄),Sang Yang Lee(李相陽) 한국육종학회 1988 한국육종학회지 Vol.20 No.1
This experiment was carried out to investigate the change of kernel weight and the position of spikelet with the highest kernel weight on the spike of wheat varieties at 25, 35 and 45 days after heading from Oct. 1985 to June 1986 in Suwon Korea. Among 14 varieties tested, Suwon 239, with the latest maturing time, has been highest kernel weight of 14.9g, followed by Olmil, Geurumil and Eunpamil at 25 days after heading. Increment of grain weight was the most between 26 and 35 days after heading. Geurumil and Milyang 26 have the hightest kernel weight increment of 25g and Milyang 25 has the lowest of 13g during this period. Between 36 and 45 days after heading, however, Milyang 25 has much grain weight increment of 15g, followed by Suwon 242, Suwon 241 and Tapdongmil while Eunpamil and Olmil have very little increment in this period. There are three patterns of grain filling process. First, Suwon 242 and Milyang 25 show slow and progressive grain filling pattern from early to late period. Second, Eunpamil, Olmil and Suwon 239 which have lightier kernel weight of 34 to 37g show rapid grain filling patteren, nearly completing accumulation process by 35 days after heading. Third, the other varieties show that most of accumulating process was made between 26 and 35 days after heading but some process was continued untill even later period. Highly positive quadratic regression coefficient was between the position of spikelet on the spike and kernel weight, thus upper and lower part of spike having lighter kernel and middle part of spike, heavier kernel which were in the 8th to 10th spikelet on the spike.
김병렬 ( Byung-ryeol Kim ),정민수 ( Min-su Jeong ),진연호 ( Yeon-ho Jin ),최성웅 ( Sung-oong Choi ) 대한화약발파공학회 2018 화약발파 Vol.36 No.1
광체의 일부를 안전광주로 남겨둠으로써 채광장의 안정성을 유지하는 주방식 채광법이 갱내 석회석광산에 적용될 경우, 안전광주의 안전율과 광체의 채수율은 서로 상반될 수 밖에 없으며, 이에 대한 공학적 판단은 생산성과 안정성에 필수적인 요소이다. 본 연구에서는 현장조사를 통해 일반적인 발파패턴에 의한 굴진단면의 진행과정을 살펴봄으로써 여굴 또는 미굴의 발생여부를 검토하였으며 이때 입체사진측량기법을 동원하여 굴착단면 측정의 정확성을 도모하였다. 또한 이 결과를 바탕으로 국부적인 암반조건을 고려한 혼합발파패턴을 즉각적으로 반영함으로써 여굴을 최소화할 수 있는 방법론을 제시하였으며, 현장 적용을 통해 단면기준으로 최대 5% 가량의 여굴 감소 효과 (70m<sup>2</sup>의 단면을 발파할 경우 최대 3.5m<sup>2</sup>의 여굴 감소 효과)라는 유의미한 결과를 도출할 수 있었다. When an underground limestone mine selects room-and-pillar mining method, in which the stability of mine openings is maintained by leaving safety pillars, the stability of safety pillars is always incompatible with their productivity. Therefore, the engineering decision for stability and productivity is essential. In this study, a progress of excavation faces by conventional blasting pattern has been examined in field for investigating over-break and stereo-photogrammetry method has been applied to this field measurement for improvement of accuracy. Also this result has been reflected instantly to composite blasting pattern by feedback, for minimizing overbreak. Field tests showed the relevant results that 3.5m<sup>2</sup> in over-break out of 70m<sup>2</sup> in total excavation face has been decreased, that is 5% of reduction rate in maximum.
지반침하 발생지역에서의 절리군의 방향성과 침하발생 위치의 상관관계에 관한 연구
김병렬(Byung-Ryeol Kim),이승중(Seung-Joong Lee),최성웅(Sung-Oong Choi) 한국암반공학회 2013 터널과지하공간 Vol.23 No.5
채굴적에 의한 지표에서의 지반침하발생 위치를 추정함에 있어, 절리군은 필수적으로 고려되어야하는 요소 중의 하나인 바, 각 절리군의 역학적 특성과 이들이 채굴적 상부 암반에 분포하는 양상은 지반침하발생을 가속시킬 수 있다. 따라서 본 연구에서는 침하발생 범위의 추정에 관한 선행연구의 근거자료로 이용된 자료 중 절리군의 방향성에 대한 조사정보의 신뢰성이 비교적 양호한 자료들을 선별하여 절리군의 방향성을 중심으로 지반침하 발생위치와의 상관관계를 재검토하였으며, 추정각과 침하 지역에 분포하는 주절리군 J₁의 경사각을 비교하여 주절리군 J₁이 침하에 미치는 영향을 분석하였다. Joint sets should be considered as an influence factor, when location of subsidence zone by stopes is predicted. And the mechanical properties and distribution patterns of joint set above stopes may be affecting subsidence occurrence. In this study, therefore, the orientation of joint sets is reanalyzed with the data from the previous research on prediction of defining the subsidence zone. From a correlated analysis, the influence of major joint set(J₁) on subsidence location was analyzed by comparing the angle of assumption with the angle of major joint set(J₁).
Festulolium braunii 교잡종의 재배특성, 사료가치 및 수량성
성병렬(Byung Ryeol Sung),김맹중(Meng Jung Kim),임근발(Keun Bal Lim),임용우(Yong Woo Rim),김기용(Ki yong Kim),최기준(Gi Jun Choi) 한국초지조사료학회 2006 한국초지조사료학회지 Vol.26 No.2
This experiment was carried out in order to examine the winterhardiness, heading date, fresh and dry matter yeild of Festulolium braunii, a hybrid of Festuca pratensis and Lolium multiflorum, which is newly introduced in Korea. This experiment was performed at National Livestock Research Institute in Suwon and Namwon from September 2004 to July 2005. The results are as follows. “Fleurial”, “Boxer”, and “Perun” showed stronger winterhardiness than “Hwasan 101”, which is one of the strongest in the winterhardiness hybrids. Therefore, we do not see there is any problem in winterhardiness when these hybrids are cultivated in Korea. The hybrids are turned out to be mid and late maturing hybrid. The average heading dates of the three hybrids were May 25 in Namwon and May 27 in Suwon. These dates are lower(1~3 days) than that of Hwasan 101. They showed 91~96 ㎝ in leaf length at 1st cutting times which are comparatively long. This experiment also disclosed that their lodging and regrowth are strong and excellent. We also found out that there are significant difference between regions and hybrids in the total fresh yield per ha. The average fresh yield of Suwon was 83,222 ㎏/㏊ and that of Namwon was 69,139 ㎏/㏊. We could not see any difference in the dry matter yield affected by region, however, there were significant difference in hybrids(p<0.05). The crude protein contents of the three hybrids indicated very high figures. the crude protein cotents of Perun, Fleurial and Boxer are 18.0%, 17.4% and 16.7% respectively. However the ADF (Acid Detergent Fiber) shows 28.1~29.2% which is less contents than 33.2% of Hwasan 101. We found out from this experiment that these three hybrids have excellent feed quality because the NDF (Neutral Detergent Fiber) is decreased by 7~3.8% comparing that the NDF of Hwasan 101 is 58.3%. Also each hybrids contains more crude fat by 1%, a little more chemical composition and less ash contents. Thus we can learn that chemical composition contents of these hybrids are also fittable.
채굴적에 의한 지반침하 사례 분석을 통한 침하발생 범위의 추정에 관한 연구
김병렬(Byung-Ryeol Kim),이승중(Seung-Joong Lee),최성웅(Sung-Oong Choi) 한국암반공학회 2013 터널과지하공간 Vol.23 No.1
폐광산에서의 지표침하의 영향범위를 추정하기 위하여 많이 적용되어 왔던 도식법은 수평탄층에서 흔히 발생하는 트러프형 침하의 영향범위를 추정하는데 그 적용성이 높은 것으로 알려져 왔다. 그러나 국내 광산의 광체들은 대부분 급경사이며, 침하 형태 또한 함몰형의 빈도가 상대적으로 높은 것으로 보고되고 있기 때문에, 국내 침하지에 도식법을 직접적으로 적용하는 것은 바람직하지 않다. 따라서 본 연구에서는 국내 폐광산 지역에서 발생한 총 163개의 지표침하 발생지에 대한 사례분석을 실시하여, 채굴적의 위치를 기준으로 광체의 경사방향 및 광체의 경사반대방향으로의 지표침하 발생범위를 규명하였다. 또한 이를 토대로 채굴적의 심도를 고려한 지표침하 발생범위에 대한 추정각을 산정하였으며, 기존의 도식법과의 비교분석 및 지표침하 발생 사례 적용분석을 통해 최종적으로 이 추정각의 범위를 제안하였다. Graphical method has been widely applied to the prediction of subsidence area, and is known to have advantages in analysis of trough subsidence which is common in horizontally seamed mine area. However, it is reported that most of the ore bodies in Korea are geologically inclined from sub-horizontal to steep, and therefore, the sinkhole subsidence is frequent in abandoned mine area. For these reasons, it is not to be desired that graphical method is applied for predicting the subsidence occurrence. This paper describes the results of subsidence zone prediction considering the dip direction and the opposite direction of inclined ore bodies from the case studies on the 163 subsidence occurrence regions. The results show also the assumed angle which can define the range of subsidence in the surface area. In conclusion, the limit of this angle is suggested after taking into account the comparison with graphical method and the application to the case histories.
델파이방법을 이용한 암반분류법의 불연속면 거칠기 평가분류 정량화에 관한 연구
김병렬(Byung-Ryeol Kim),이승중(Seung-Joong Lee),최성웅(Sung-Oong Choi) 한국암반공학회 2015 터널과지하공간 Vol.25 No.1
본 연구에서는 설문조사 기법인 델파이 방법을 이용하여 RMR 분류법과 Q 분류법에 정성적인 지표로 제시되어 있는 불연속면의 거칠기 평가분류를 정량화하였다. 패널을 선정하고 웹상에 설문조사 사이트를 개설하여 불연속면의 거칠기에 대한 설문조사를 실시하였다. 총 3회의 걸쳐 설문조사를 수행하였으며, 설문조사에는 표준 프로파일과 몬테카를로 시뮬레이션 기법이 적용되어 표준 프로파일과 동일한 미소 평균거칢각(Ai)을 갖는 프로파일을 이용하였다. 각 설문이 종료된 후에는 전체의 설문 결과를 배포하여 다음 설문 시에 전체의 의견과 자신의 의견을 비교하여 의사결정을 할 수 있도록 하였다. 설문 결과에 대하여 합의도와 수렴도를 나타내었으며, 설문조사가 회를 거듭할수록 합의도와 수렴도가 높아지는 경향을 보였다. 이에 3차 설문조사 결과를 일정한 합의의 수준에 도달하였다고 판단하고, 이를 이용하여 각 암반분류법의 거칠기 평가기준을 구분하고 분류의 범위를 정량화하였다. This paper describes a new quantitative process for evaluating the roughness of discontinuity, which is suggested as a qualitative criteria in RMR or Q-system. For this purpose, the Delphi method which is one of the surveying methods was introduced. The selected panels were asked to evaluate the roughness of discontinuities on the Web which was hosted by authors in advance. A total of 3 surveys were performed using JRCs suggested by Barton and Choubey as well as Ai generated by the Monte Carlo simulations. After each survey, the results were provided to all panels for comparing their decisions to others. As surveys proceeded, better consensus and convergence were achieved. With a good agreement of panels on roughness classification, the quantitative criteria for roughness of discontinuity in RMR and Q-system was established in this study.