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컨테이너에서 재배된 백목련과 자귀나무의 이식전후 생장률 평가
김태진,김학범 한국조경학회 2001 韓國造景學會誌 Vol.29 No.5
This study was conducted to evaluate the growth rate of landscape trees produced in containers for three year, and the growth rate of the establishment period during sixth month~twelve months after transplanting. Two types of container such as plastic pot(pot) and fabric growing bag(bag) were adopted to restrict tree roots. Each type of container was divided into seven sub-types. One traditional production method was included as comparison. Two landscape woody plant species (Magnolia denudata, Albizzia julibrissin) were planted in the seven sub-types of container. After one or two growing season in the container, the trees of each container type were transplanted. Half of the trees were transplanted in the mild spring season, and the other half were transplanted in the improper summer season. The data was collected on the diameter of root cellar and the tree height in each year. The research results are as follows; 1. Container production method was lower than the traditional production methods by 1.3 times ~ 2 times in the growth rates. 2. The Geocell bag and Root control bag revealed higher growth rates than pp-woven bag. And pot- in-pot(double pot)system revealed higher growth rates than the ether container pot system in A denudata. There were no differences in the growth rates between container production system in Albizzia julibrissin. 3, The growth rates of improper transplanting trees was high in the \"pot\" type - \"bag\" type - \"control\" in descending order. Especially, the growth rates of \"pot\" type revealed higher than \"control\" by 4 times. 4. From the results of ANOVA and Ad hoc test, the variable of growth factors of each container types in improper transplanting experiment was not significant for a range of 5% or 1% level. And the growth rates of traditional production method was lower than the container production method. 5. There was no differences in growth rate between the containerized and the traditional production system in the case of proper transplanting experiment. The growth rates of diameter of root collar was higher in the \"control\". The growth rates of tree height was higher in the \"bag\" type. Finally, based upon the results of this study, subsequent research on the development of container materials and maintaining methods that focused on the growth rates would be required.aintaining methods that focused on the growth rates would be required.
김태진,강대욱,이요한,현동석 전력전자학회 2002 전력전자학회 논문지 Vol.7 No.2
The multi-level inverter system is very promising in ac drives, when both reduced harmonic contents and high power are required. In case of multi-level inverter system, the loss of switch devices cannot be analyzed by conventional methods. The reason is that the loss of each the switch device is different from one another unlike 2-level. In this paper, a simple and accurate method of computing conduction and switching loss is proposed for multi-level inverter system. The validity of the proposed method is proven for 3-level and 4-level diode clamped inverter system. 멀티레벨 인버터 시스템은 낮은 고조파 성분과 높은 전력이 요구되는 분야에 매우 효율적인 시스템이다. 멀티레벨 인버터 시스템의 경우에 스위치 소자의 손실은 기존의 방법으로는 해석 할 수 없다. 그 이유는 각 스위치 소자의 손실이 2-레벨과는 다르게 서로 같지 않기 때문이다. 본 논문에서는 멀티레벨 인버터 시스템에 대한 전도 손실과 스위칭 손실의 간단하고 정확한 방법을 제안하였다. 제안된 방법의 타당함은 3-레벨과 4-레벨 다이오드 클램프드 인버터 시스템에 대해 증명하였다.
해양수산업의 지역경제 파급효과 분석-부산, 울산, 경남을 중심으로-
김태진,Tromp, Nikolas 한국해양수산개발원 2020 해양정책연구 Vol.35 No.2
The purpose of this study is to analyze the economic impact of ocean industries in Busan, Ulsan, and Gyeongnam regions. This paper uses a demand-driven model based on the inter-regional input-output table for 2015 published by the Bank of Korea. The main findings are as follows. First, ocean industries in Busan, Ulsan, and Gyeongnam have major economic inducement effects not only within regions but also between regions. In particular, ocean industries in the three regions induced an added value of 31.2 trillion won and the employment of about 454,200 people in all regions. Second, most outputs from fisheries and fish processing sectors were consumed domestically, while most outputs from shipbuilding and water transport sectors were exported. This illustrates the need to establish policies which take into consideration the unique characteristics of each ocean industry. Lastly, considering the interdependence of ocean industries between regions, inter-regional cooperation to establish policies is likely to be effective for regional economies. Based on the results of the empirical analysis, this paper discusses other useful policy implications to promote regional economies.
김태진 한국공안행정학회 2004 한국공안행정학회보 Vol.0 No.18
경찰계급체계는 직위부여의 기준이면서 계급정년제도의 기초가 된다. 한국경찰의 계급체계는 순경에서 치안총감에 이르기까지 11개의 계급으로 구성되어있다. 한국경찰이 지니고 있는 구조적이고 고질적인 문제점을 해결하기 위해서는 경찰계급의 단계를 7개 정도로 축소함으로써 직급과 계급의 수를 일치시키고 승진경쟁을 완화하며 계급정년제도의 문제점을 해결할 수 있다. 이는 관료제적 계층구조의 파괴를 통한 신속한 의사결정을 요체로 하는 지식정보사회의 새로운 경향에 발맞추는 미래지향적 조치가 될 수 있을 것이다. Study on the evaluation system for police criminal investigation- based on the self-evaluation -