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건식 저 NOx 가스터빈의 연소동압 측정용 소프트웨어 시스템 개발
장욱,서석빈,정재화,안달홍,김종진,차동진,Jang, Wook,Seo, Seok-Bin,Jung, Jae-Hwa,An, Dal-Hong,Kim, Jong-Jin,Cha, Dong-Jin 대한설비공학회 2002 설비공학 논문집 Vol.14 No.11
Combustion dynamics of a dry low NOx gas turbine have been measured by utilizing a dynamic pressure measurement system. The software part of the measurement system, implemented with a commercial general-purpose DASYLab version 5.6 code, basically acquires combustion dynamics signals, performs the FFT analysis, and displays the results. The gas turbine often experiences momentary combustion instability, especially when its combustion mode changes. It is found that the measurement system developed in the study may outperform the other commercial dynamic pressure measurement system. The developed system currently serves to monitor the combustion dynamics of the gas turbine.
녹색발광 β-SiAlON:Eu 세라믹 플레이트 형광체의 치밀화 소결
박영조,이성훈,장욱경,윤창번,윤철수,Park, Young-Jo,Lee, Sung-Hoon,Jang, Wook-Kyung,Yoon, Chang-Bun,Yoon, Chul-Soo 한국세라믹학회 2010 한국세라믹학회지 Vol.47 No.6
$Eu^{2+}$-doped $\beta$-SiAlONs ($Si_{6-z}Al_zO_zN_{8-z}:Eu_y$) are recognized as promising phosphor materials to build an white LED for lighting application due to its excellent absorption/emission efficiency in the long wave length region. In this research, the fabrication of $\beta$-SiAlON:Eu plate phosphor by sintering was investigated with fixed Eu content(y) and varied composition of the host lattice(z). The addition of the activator $Eu_2O_3$ lead to enhanced densification by forming the transient liquid phase. The refinement of a composition by the calculated lattice parameter indicated that the measured composition of the fabricated specimens is nearly same to that of designed one. The single phase $\beta$-SiAlON:Eu plate with relative density of 96.4% was achieved by addition of 2 wt% CaO, which implies the possibility of full densification by adjusting the processing variables.
화이트칼라 범죄의 심각성 및 양형기준 개선방안에 관한 연구: 횡령, 배임을 중심으로
이장욱 ( Jang Wook Lee ),이윤호 ( Yoon Ho Lee ) 한국경찰학회 2015 한국경찰학회보 Vol.17 No.6
The objective of this article is to measure the seriousness of white-collar crime and the national perception on the sentencing, and to explore the problems in the sentencing guideline if the sentencing is insufficient compared to the severity of the crime along with how to improve it. This study examined the general discussion of the seriousness of the crime prior to the full scale debate on the magnitude of the white-collar crime. In the case of foreign countries, there has long been the awareness of the crime of the interest in the social consensus and thereby the cases are plentiful, on the other hand, in our country there is not much concern on this theme, and therefore it is hard to find the records of the research except research by a few scholars. In addition, there are only a few attempts to seek out improvement in the sentencing guideline by logically relating the severity of the crime with the sentencing guideline On the one hand, in regard to one of the most serious white-collar crimes which emerge in contemporary society, in particular, embezzlement/breach of trust crime, it is remarkable that court tended to punish it more generously compared to, so called, street crimes. Of course, this tendency has considerably relaxed since the enforcement of sentencing guideline in 2009, however, most Koreans have the perception that the sentencing is insufficient, compared to the magnitude of the white-collar crime. The issue of sentencing of white-collar crime stems from the imbalance of the sentencing criteria and the extremely poor law enforcement, and in order to address these problems, it is necessary to arrange it upward within the reasonable scope and to develop actively aggravating sentencing factors along with benchmarking of foreign cases and including them in the actual sentencing guideline. Since the research on the exploration on the sentencing factors is none other than wasteland in South Korea, the active research on this is expected.
張旭(Jang Wook) 대한국토·도시계획학회 1999 國土計劃 Vol.34 No.2
The aim of this essay is to examine planners’ prejudice, misunderstanding, ignorance and forgetfulness, concentrating upon what have not been said. For this purpose, planners’ approaches to traffic congestion and congestion costs are examined in detail. Some of the findings are: (1) planners do ignore the voluntary aspect of traffic congestion and therefore, overestimate congestion costs; and (2) planners do not understand much individual driver's behavior and reaction to traffic congestion and its policy measures and therefore, cannot make their predictions correctly. Planners’ prejudice, misunderstanding and amnesia distort their understanding of traffic congestion and in turn, act as a barrier in formulating proper congestion policies.