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朴範鎬 弘益大學校 1971 弘大論叢 Vol.3 No.-
I would like to point out that the basic tasks ????? school organization are how to maintain the school operation operation efficiently and how to develop it. With the rapid changes of modern society. It has become imperative to collect, analyse and seize the essence of the things which are taking place in operation of school organization. With regards to school accounting system it can not be denied that the accounting system adopted by private school is still in infancy. On the other hand, however, there increases concern not only for the necessity of betterment of school management, but also for its external movement forwards. Futhermore even in the long and general point of view, the efficient methods to operate private school organization must be sought in order to support and facilitate implementation of their social duties and responsibilities which they must dedicate themselves to consolidate foundation of national modernization. Chapter I in this thesis emphasizes the importance of advanced and improved accounting system in school management. Chapter II illustrates basic comcepts and characteristics of school accounting. Chapter III, as the main part of this, is the study of accounting system of school corporation including following subjects; 1) Characteristics of accounting system and an organic relation of accounting and managerial organization of school corporation. 2) Analyzing system of financial status and operational profit by an introduction of an expenditures balance accounting to a bugetary blance accounting system and its accounting system and accounting format. 3) Charateristics, organizion procedures, control organization and its system of budgetary system of school corporation. 4) Problems and the key points in financial analysis. Chapter IV shows the directions of further study of accounting system of school corporation. The importance of study on the accounting principles of school corporation is especially emphasized in this chapter and also gives illustrations of the accounting principles adopted by Japanese school corporation.
Actinometric Investigation of In-Situ Optical Emission Spectroscopy Data in SiO2 Plasma Etch
Boom Soo Kim,홍상진 한국전기전자재료학회 2012 Transactions on Electrical and Electronic Material Vol.13 No.3
Optical emission spectroscopy (OES) is often used for real-time analysis of the plasma processes. OES has been suggested as a primary plasma process monitoring tool. It has the advantage of non-invasive in-situ monitoring capability but selecting the proper wavelengths for the analysis of OES data generally relies on empirically established methods. In this paper, we propose a practical method for the selection of OES wavelength peaks for the analysis of plasma etch process and this is done by investigating reactants and by-product gas species that reside in the plasma etch chamber. Wavelength selection criteria are based on the standard deviation and correlation coefficients. Moreover, chemical actinometry is employed for the normalization of the selected wavelengths. We also present the importance of chemical actinometry of OES data for quantitative analysis of plasma. Then, the suggested OES peak selection method is employed.. This method is used to find out the reason behind abnormal etching of PR erosion during a series of SiO2 etch processes using the same recipe. From the experimental verification, we convinced that OES is not only capable for real-time detection of abnormal plasma process but it is also useful for the analysis of suspicious plasma behavior.
Kim, Boom-Soo,Hong, Sang-Jeen The Korean Institute of Electrical and Electronic 2012 Transactions on Electrical and Electronic Material Vol.13 No.3
Optical emission spectroscopy (OES) is often used for real-time analysis of the plasma processes. OES has been suggested as a primary plasma process monitoring tool. It has the advantage of non-invasive in-situ monitoring capability but selecting the proper wavelengths for the analysis of OES data generally relies on empirically established methods. In this paper, we propose a practical method for the selection of OES wavelength peaks for the analysis of plasma etch process and this is done by investigating reactants and by-product gas species that reside in the plasma etch chamber. Wavelength selection criteria are based on the standard deviation and correlation coefficients. Moreover, chemical actinometry is employed for the normalization of the selected wavelengths. We also present the importance of chemical actinometry of OES data for quantitative analysis of plasma. Then, the suggested OES peak selection method is employed.. This method is used to find out the reason behind abnormal etching of PR erosion during a series of $SiO_2$ etch processes using the same recipe. From the experimental verification, we convinced that OES is not only capable for real-time detection of abnormal plasma process but it is also useful for the analysis of suspicious plasma behavior.
Surface and Upper-Level Features Associated with Wintertime Cold Surge Outbreaks in South Korea
Sang, Boom Ryoo,Won, Tae Kwon,Jong, Ghap Jhun China Ocean Press ; Springer-Verlag 2005 Advances in atmospheric sciences Vol.22 No.4
<P>The surface and upper-level features associated with a sharp drop of wintertime daily temperature over South Korea is investigated in this study. This sharp drop in daily temperature is called a cold surge and is one of the most hazardous weather phenomena in East Asian winters. An upper-level baroclinic wave of 60° wavelength propagating eastward at a phase speed of 12° longitude per day across the continent of northern China from the west of Lake Baikal toward the eastern coast of China causes the outbreak of cold air over South Korea. The cooling associated with the upper-level baroclinic wave is found at all altitudes under the geopotential height-fall center near the tropopause. The development in the ridge seems to derive the early evolution of the eastward-propagating sinusoidal wave, whereas the trough is connected directly with the tropospheric temperature-drop. An enhancement of the wintertime East Asian jet stream after the outbreak of a cold surge is a response to the steep temperature gradient associated with the developing baroclinic wave.</P>