• Communications for Statistical Applications and Methods
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• 제23권5호
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• pp.423-432
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• 2016

In this paper, we stochastically analyze the continuous time surplus process in a risk model which involves a continuous type investment. It is assumed that the investment of the surplus to other business is continuously made at a constant rate, while the surplus process stays over a given sufficient level. We obtain the stationary distribution of the surplus level and/or its moment generating function by forming martingales from the surplus process and applying the optional sampling theorem to the martingales and/or by establishing and solving an integro-differential equation for the distribution function of the surplus level.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2001년도 International Meeting on Information Display
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• pp.9-12
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• 2001

With the explosive growth of Note-PC and Desktop monitor market, TFT LCD market confronted a entire supply shortage during 1999. Forecasting a more booming stage for the next several years, many TFT-LCD panel manufacturers continue to expand the capacity of their existing plants and also make an additional investment in building new plants. The new investment is concentrated on the $4^{th}$ generation TFT LCD line in order to improve investment efficiency. The set up of the Samsung's Gen 3.5 line progressed with satisfactorily performance using $600{\times}720mm$ glass size. We have continuously reviewed several issues regarding the glass size for our next Gen. 4 line, which leads to adopt $730{\times}920mm$. Due to the continuous enlargement of a substrate size and following difficulty in transferring cassettes, the next line is expected to be the last line that employs "cassette transfer". The layout of the next line will shift from conventional "concentration-type" to "separation-type" configuration for the purpose of reducing transfer distance as well as transfer time. The details will be discussed in this paper.

• 대한치과기공학회지
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• 제28권1호
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• pp.9-17
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• 2006

The purpose of this study was to evaluate the titanium castability with a spin type casting machine(TiCast, Super R, Selec, Osaka. Japan). We tested phosphate bonded investment "Rematitan$^{(R)}$Plus(Dentaurum, Inc., Pforzheim, Germany)"of mesh grid pattern and plate pattern. Four different mold temperatures(room temperature, 200$^{\circ}C$, 400$^{\circ}C$ and 600$^{\circ}C$) were prepared for the present study. In mesh grid pattern with spruing of $\varphi$0.88㎜ dimeter, when the mold temperature increased, high percentage of castability was gained. Mold temperature showed a highly significant(p<0.05) correlation on the castability, In plate pattern, the higher the mold temperature during casting, the greater the adhesive phenomenon between Ti surface and the investment.

• 산업경영시스템학회지
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• 제14권24호
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• pp.207-219
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• 1991

We studied performance evaluation methods for each cause by using a benchmark and also researched performance measurement models which based on CAPM. In this study, we analyzed the beneficiary certificate of stock type of three large domestic investment trust company. The purpose of this paper is improving the efficiency of investment maintenance and the operating the ability of fund operator by analyzing the contribution of the rate of return on investment and the cause of operating performance. We applied this study to the increasing aspect of stock price(Jan. 1988-April. 1999) as well as the decreasing aspect of stock price(April, 1989-July. 1990).

• 기술혁신연구
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• 제18권1호
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• pp.75-98
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• 2010

본 연구는 정부의 대표적인 상용화 기술혁신정책인 산업기술개발사업의 성과에 영향을 미치는 요인을 분석함으로써 관련 정책결정자에게 정책적인 시사점을 주는데 목적이 있다. 이를 위해 2003년부터 2007년간 종료된 산업기술개발사업을 대상으로 정부가 중요하게 고려하는 정책요인별로 가설을 형성하였다. 사업을 수행한 주관기관의 유형(대기업, 중소기업, 벤처기업, 연구소, 대학)에 따라 R&D성과에 차이가 있는지, 산학연간의 협력 개발이 단독 개발에 비해 R&D성과가 나은지, 과제 참여기관 수와 R&D성과의 관계, 과제 총금액의 크기와 R&D성과의 관계, 과제 총금액에서 차지하는 민간 총투자금의 비중과 R&D성과의 관계 등을 검증하고 있다. R&D성과는 산업기술개발사업의 제1차적 성과물인 특허등록건수와 논문게재건수로 측정하였다. 포아송 회귀분석 결과, 기업이나 연구소에 비해 대학이 특허 및 논문 차원의 R&D성과가 높은 것으로 나타났으며, 벤처기업의 특허 성과는 중소기업의 특허성과에 비해 높은 것으로 나타났다. 산학연의 협력개발은 단독개발에 비해 대체적으로 R&D성과가 높고, 과제 총금액이 클수록 R&D성과가 높으며, 민간 총 투자금의 비중이 높을수록 대체적으로 R&D성과가 높은 것으로 나타났다. 과제 참여기관의 수와 R&D성과간의 역U자형 관계 가설은 지지되지 않았다.

• 한국주조공학회지
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• 제20권5호
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• pp.330-335
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• 2000

Functional metal prototypes are often required in numerous industrial applications. These components are typically needed in the early stage of a project to determine form, fit and function. Recent R/P(Rapid Prototyping) part are made of soft materials such as plastics, wax, paper, these master models cannot be employed durable test in real harsh working environment. Parts by direct metal rapid tooling method, such as laser sintering, by now are hard to get net shape, pores of the green parts of powder casting method must be infiltrated to get proper strength as tool, and new type of 3D direct tooling system combining fabrication welding arc and cutting process is reported. But a system which can build directly 3D parts of high performance functional material as metal park would get long period of system development, massive investment and other serious obstacles, such as patent. In this paper, through the rapid tooling process as silicon rubber molding using R/P master model, and fabricate wax pattern in that silicon rubber mold using vacuum casting method, then we translated the wax patterns to numerous metal tool prototypes by new investment casting process combined conventional investment casting with rapid prototyping & rapid tooling process. With this wax-injection-mold-free investment casting, we developed new investment casting process of fabricating numerous functional metal prototypes from one master model, combined 3-D CAD, R/P and conventional investment casting and tried to expect net shape measuring total dimension shrinkage from R/P pare to metal part.

• Human Ecology Research
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• 제52권5호
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• pp.443-456
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• 2014

The purpose of this study was to explore the patterns of private education, investigate the characteristics of private education patterns, and analyze the differences in study habits and academic achievement of youth on the basis of private education patterns. In this study, we used the data from the 2012 Panel of the Korea Children and Youth Panel Study by the National Youth Policy Institute. The subjects of this study were ninth-grade students and their parents. The statistical methods used for the analysis were two-step clustering, Chi-squared test, analysis of variance, and multiple regression. The major findings were as follows: first, private education was classified into three patterns, namely financial investment, time investment, and reduction of investment; and four categories, namely; private education methodology, private education time, private education expenses, and number of youth with access to private education. Second, the statistically significant socio-demographic characteristics of private education patterns were parents' education, parents' job type, father's working hours, sex of children, housing form, and income. Third, the study found that financial investment and a reduce of investment led to better study habits and academic achievement than time investment and no investment. Fourth, private education and study habits showed statistically meaningful effects on academic achievement; in particular, study habits had strong effects on academic achievement. Based on the results, a variety of educational programs for the improvement of the study habits of the youth were suggested.

• The Journal of Asian Finance, Economics and Business
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• 제8권12호
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• pp.117-127
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• 2021

This study was conducted to comprehensively identify factors that potentially influence corporate investment behavior, including micro, macro, and sectoral variables. Furthermore, investment behavior was studied across nations based on their participation in the global value chain (GVC), which was evaluated based on commodities, limited manufacturing, advanced manufacturing, and innovative activities. The study uses the dynamic panel data analysis and Generalized Method of Moment (GMM) estimation for a sample of 800 corporations, with data spanning over 2000-2019. The study result shows that in all types of countries, the coefficient lag indicator of capital expenditure statistically has a significant effect on capital expenditure. Sales growth, exchange rate, and GDP have a significant positive effect on corporate investment growth, while DER has a negative effect. In commodity countries, corporate investment is influenced by sales growth, exchange rate, and FCI. The variables that influence corporate investment in manufacturing countries are the FCI, exchange rate, sales growth, GDP, and DER. In innovative countries, variables that significantly affect capital expenditure are DER, GDP, and Tobin Q. In each type of country, the interaction terms between exchange rate and commodity price are positive and statistically significant.

• 한국중재학회지:중재연구
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• 제28권4호
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• pp.173-191
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• 2018

MFN provisions in investment agreements have been a tool for equitable treatment between foreign investors with different nationalities. This non discriminatory principle has been pursued by the host states for further investment promotion. However, it may be abused to bring the situation of so called "ISDS forum shopping" which might harm the stability and predictability of investment agreements by unexpectedly extending the scope of obligations. While some investment arbitral tribunals have interpreted the scope of MFN provision very broadly to allow the ISDS forum shopping, both procedural and substantive provisions have been invoked. To prevent any chaos of unclear boundary of MFN provision, some explicit MFN restrictions which would limit the scope of MFN provision are needed. Indeed, some investment agreements have included these MFN restrictions. Specifically, MFN restrictions deal with both procedural or substantive provisions to prevent ISDS forum shopping. According to the lessons from the recent examples of MFN restrictions, there must be a careful consideration on the benefits and costs of having a certain type of MFN restriction as the parties can be the host state and the home state of their investors at the same time.

• The Journal of Asian Finance, Economics and Business
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• 제10권2호
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• pp.145-151
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• 2023

Financial literacy (FL) is significant, as educated investors have a culture of savings and investment. The current study was conducted to identify the level of Orientation toward finance (ORTOFIN) and its impact on specific financial behavior variables like Financial Literacy (FL) and Intention towards investment (ITI). Data was randomly collected from 210 gainfully employed respondents using three standardized questionnaires. Demographics of the respondents were also collected. The data was analyzed using correlation and regression. The variables include ORTOFIN, Financial Literacy, and Intention towards Investment, while the control variables include gender, age, qualification, years of experience, and type of industry working. The results of the study show that all three variables (ORTOFIN, FL, and ITI) had significant relationships among themselves. In addition, it as has been found that ORTOFIN and FL positively influence investment intention. The finding that ORTOFIN and literacy are related to investment intention is new, as no past studies have examined this aspect, which is unique. The study also discusses the implications and limitations of the study, such as the impact of family involvement. It thus indicates a positive effect of the variables studied on investment intentions. The study is expected to stimulate further empirical examination of the variables.