啓示 靈感 解明

金碩圭 기독교대한성결교회 활천사 1962 활천 Vol.315 No.-

부산시 가로수 현황과 토양환경개선에 관한 연구

김석규,박승범,남정칠,김승환,강영조 동아대학교 건설기술연구소 1999 硏究報告 Vol.23 No.2

The purpose of this study is to analyze the correlation between soil hardness, soil acidity, and the vitality of street trees. This data was investigatived in 40 areas on 10 main street routes of Pusan; Chungang-ro, Naktong-ro, Suyeong-ro, Taejong-ro, Konghang-ro, Kudeok-ro, Kumjeong-ro, Mandeok-ro, Kaya-ro, Chungjang-ro. The findings are as follows : 1. The average soil hardness where tree grates have been built was shown to be 22.23㎜. In the absence of tree grates, the average soil hardness was 24.60㎜. These figures do not exceed the accepted parameters for acceptable soil hardness when rearing trees (22∼25㎜). However, soil hardness was measured higher in areas where tree grates were absent. Consequently, tree grates are necessary. 2. Soil acidity was measured as satisfactory(pH 5.5), mediocre(pH 5.5∼5.0), inferior(pH 5.0∼4.5), very inferior(pH 4.5). No areas were measured as satisfactory soil acidity. Four areas were measured as mediocre(10%), 19 areas as inferior(47.5%), and 17 areas as very inferior (42.5%). This indicates a requirement to improve soil acidity as about 90% of the investigatived areas were measured as either inferior or very inferior. 3. The following is an analysis of correlation between soil hardness, soil acidity and the vitality of the Ginkgo biloba ; The Ginkgo biloba was found to have a positive correlation was measured with the diagram (R²). In conclusion, the results of the analysis show a strong influence of soil hardness and soil acidity upon the vitality of Street Tree.

3GPP 5G 시스템에서의 데이터 연결성을 위한 효율적인 접속 제어 방안

김석규 한국정보과학회 2019 정보과학회논문지 Vol.46 No.8

This paper proposes an enhanced connection control for data connectivity in 3GPP 5G System. The 5G System has been developed recently and Rel-15 5G System phase 1 has been released in 3GPP standard. On the other hand, congestion control schemes have been studied on Rel-10 LTE systems based on backoff mechanism for mobility management and session management to control heavy traffic and avoid network overload situation. Also, PS Data off feature has been introduced to prevent activation of all the IP data packets by the user. In this paper, we briefly present the Rel-15 5G System with a connection control and PS-Data off from the perspective and describe the proposed enhanced connection control, called ECC(Enhanced Connection Control). Simulation results for the existing legacy mechanism in 3GPP and the proposed ECC are provided and in future work, improvements in 3GPP 5G System phase 2 standard are considered. 본 논문은 3GPP 5G 시스템에서의 데이터 연결성을 위한 효율적인 접속 제어 방안을 제안한다. 3GPP 국제 이동통신 표준화 단체에서 5G 시스템을 개발하여 Rel-15 5G 시스템 phase 1 규격을 제정 완료하였다. 다수의 단말들에 의한 트래픽 폭주와 네트워크 과부하 상황을 피하기 위해서 Rel-10 LTE 이동통신 시스템에서부터 이와 관련된 이동성 관리와 세션 관리를 위한 백오프 메커니즘에 기반한 접속제어 방안들에 대해서 표준화 작업을 진행해 왔다. 또한, 불필요한 데이터 트래픽 송수신 차단을 위해 사용자가 활성화하면 모든 IP 데이터 패킷 송수신을 금지하는 PS Data off 기능도 도입되었다. 본 논문에서는 접속제어와 PS Data off 관점에서의 Rel-15 5G 시스템을 소개하고 개선된 ECC(Enhanced Connection Control)을 제안한다. 기존 3GPP 메커니즘과 제안하는 ECC에 대한 실험결과 및 성능을 파악하고, 향후 표준에서 진행될 수 있는 개선 방향에 대해 살펴본다.

도시공원녹지의 계절별 토양특성이 곰솔의 생육에 미치는 영향

김석규,박승범,남정칠,김승환,이기철 東亞大學校 建設技術硏究所 2006 硏究論文集 Vol.29 No.2

The purpose of this study is to clarify correlations between soil environments and the growth of trees in urban park and green areas and thereon analyze effects of seasonal changes in such environments on such growth. To determine seasonal factors of soil affecting the vitality of Pinus thunbergii, first of all, the study designated the vitality as a dependent variable and soil hardness, moisture, pH, K, Na, Mg and Ca as independent variables. Then the study performed Pearson's coefficient analysis. Based on findings from the analysis, the multiple regression analysis were carried out. The result of the study can be described as below; When correlations between the independent and dependent variables were examined using Pearson's correlation analysis, it wa found that the vitality, soil hardness, K, Na, Mg and Ca were significant at the level of 5%. Among those significant variables, the vitality and Mg were most correlated with the coefficient of 0.415, while K and Mg were least correlated with that of -0.235. Considering findings from the coefficient analysis, this researcher performed multiple regression analysis to determine soil factors influencing the growth of Pinus thunbergii. As a result. it was found that the growth was most influenced by Mg, followed by soil hardness and Ca in order. To clarity what soil factors influence the growth of Pinus thunbergii in spring, the researcher carried out multiple regress ion analysis to find that the growth was most influenced by pH. followed by soil hardness. Then the researcher applied multiple regression analysis to determine soil factors influencing the growth mentioned above in summer. The analysis showed that no soil factors affected the vitality at the significance level of 5% for t. Concerning relative importance based on the standard regressive coefficients, or β, K had the coefficient of 0.437 suggesting it was relatively more influential comparing to the other independent variables. Soil factors which influence the growth of Pinus thunbergii in fall were determined through multiple regressive analysis to find that the growth was influenced by soil hardness in the same season. Also such factors as affecting the growth mentioned above in winter were clarified using multiple regressive analysis to show that the growth was most influenced by soil hardness, followed by Mg, pH and Ca in order. In conclusion soil hardness had effects on the growth of Pinus thunbergii throughout four seasons except summer. Thus soil hardness is the most important factor for the growth of Pinus thunbergii. 본 연구는 도시공원녹지의 토양환경과 수목생육과의 상관관계를 구명하고, 계절별 토양 특성의 변화가 수목의 생육에 미치는 영향을 분석하고자 하였다. 곰솔의 수목활력 도에 영향을 미치는 계절별 토양인자를 알아보기 위하여 수목활력 도를 종속변수로 지정 하고 토양경도, 토양수분함량, 토양 pH , K, Na, Mg,Ca함량을 독립변수로 지정하여 Pearson 상관 분석을 수행한 후, 그 결과를 이용하여 다중 회귀분석을 실시하였으며 그 결과는 다음과 같다. 1) 각 변수들 간의 Pearson 상관분석을 실시한 결과, 유의확률 값 5%수준에서 유의한 변수는 수목활력도와 토양경도, K, Na, Mg Ca로 나타났다. 유의한 변수들 중 에서 수목활력도와 Mg가 상관계수 0.415로서 상관성 이 높게 나타났고 K와 Mg가 상관계수 - 0.235 로 상관성이 가장 낮게 나타났다. 2) 상관분석 결과를 바탕으로 곰솔의 생육에 미치는 조사지의 토양인자를 알아보기 위해 다중 회귀 분석한 결과, 경도, Mg, Ca가 수목활력 도에 유의적인 영향을 미치는 것으로 판단할 수 있었으며, 곰솔의 생육에 영향을 미치는 토양인자는 Mg, 토양경도, Ca 순으로 나타났다. 3) 곰솔의 생육에 영향을 미치는 봄철의 토양특성은 pH, 토양경도 순으로 나타났고, 곰솔의 생육에 영향을 미치는 여름철의 토양 특성은 없는 것으로 나타났으며, 곰솔의 생육에 영향을 미치는 가을 철 의 토양특성은 토양경도로 나타났고, 곰솔의 생육에 영향을 미치는 겨울철의 토양특성은 토양경도, Mg,pH, Ca 순으로 나타났다. 본 연구의 결과, 곰솔의 생육에 영향을 미치는 토양특성 중에서 토양경도는 여름을 제외한 모든 계절에 영향을 미치는 중요한 토양인자로 나타났다.

현대에 있어서의 예배연구(一)

김석규 기독교대한성결교회 활천사 1968 활천 Vol.333 No.-

Optimal power-splitting protocol in the wireless relay networks

김석규,김재현 한국마린엔지니어링학회 2022 한국마린엔지니어링학회지 Vol.46 No.5

In this study, power-splitting relaying is considered for decode-and-forward (DF)-based relay networks, which consist of a source, relay, and destination, and harvest energy from the radio frequency (RF) radiation of the source. To minimize outage probabil-ities, we analytically derive the optimal power ratio of power splitting for DF relaying in closed-form and present the exact expression of outage probability with an optimal ratio over Rayleigh fading channels. Therefore, this paper proposes Relay Selection of Optimal Power Splitting(RSOPS), an optimal power-splitting relay selection scheme that maximizes the achievable transmission rate between the source and destination and can be used on a Simultaneous Wireless Information and Power Transfer(SWIPT) system. RSOPS selects the “Best” relay that maximizes the achievable transmission rate and demonstrates a significantly reduced outage probability. The outage probability expression with the optimal ratio is validated using the numerical results. The optimal power-splitting relaying is compared to other power-splitting protocols with a fixed power-splitting ratio.

금정산의 식생구조 및 식생변화 분석

김석규,장원익,남정칠 東亞大學校建設技術硏究所 2004 硏究論文集 Vol.28 No.1

The the purpose of this study is to propose vegetation management device through analyzing vegetation structure and phytocociological Changes for ten years in Mt. Geumjeong. Eight belt transects of quadrat(20m×20m) were sampled to investigate and analyze the vegetation structure.

논설 : 근본주의와 보수주의

김석규 기독교대한성결교회 활천사 1962 활천 Vol.315 No.-

말씀과 생활 / 강단 / 스스로 돌이켜 살지니라

김석규 기독교대한성결교회 활천사 1968 활천 Vol.332 No.-

[신작] 눈부신 궁전 외 1편

김석규 고요아침 2003 열린시학 Vol.8 No.4