• Korean Chemical Engineering Research
• /
• 제54권3호
• /
• pp.320-331
• /
• 2016

제철소에서 부생되는 LDG (Linze Donawitz gas) 가스는 일산화탄소(CO)를 60% 이상 포함한다. LDG로부터 CO를 고순도로 분리하는 2가지 공정을 고려하였다: COSORB와 CO-PSA (pressure swing adsorption). 이 연구의 목적은 기술경제성평가(TEA: techno-economic analysis)를 통하여 이 두 공정 중 어떤 공정이 더 경제성이 높은 지를 결정하는 하는 것이었다. TEA의 기술적 측면에서는 초기투자비(TCI: total capital investment)와 총생산비용(TPC: total production cost)을 추정하기 위하여 먼저 공정흐름도(PFD: process flow diagram)를 완성하고, 물질 및 에너지 수지식을 계산한 후, 장치 종류 및 크기를 결정하였다. TEA의 경제성 측면에서는 투자회수율(ROI: return on investment) 및 투자회수기간(PBP: payback period)과 같은 경제성 판단기준을 산출하였고, ROI와 PBP에 가장 큰 영향을 주는 인자들을 찾기 위하여 민감도 분석을 수행하였다. CO-PSA 공정은COSORB 공정 보다 더 높은 ROI와 더 낮은 PBP로 인하여 경제적 우위를 보여주었다. CO의 가격은 ROI와 PBP에 가장 큰 영향을 주는 인자로 파악되었다.

• 산경연구논집
• /
• 제10권11호
• /
• pp.15-23
• /
• 2019

Purpose: Global economic integration has provided good opportunities and conditions for the development of foreign direct investment in Finances. Therefore, this paper attempts to explore what determines foreign direct investment in Finances of Organization for Economic Co-operation and Development (OECD) countries. Research design, data and methodology: This paper employs the panel data over the period 2005-2017 and uses the random effect model to estimate this proposition. Results: The results indicate that the foreign direct investment in services, growth rate of GDP, interest rate and saving are positively related with foreign direct investment in finances. Conversely, the growth rate of wage and fluctuation rate of exchange rate are negatively related with foreign direct investment in finances. Moreover, the results verify that the effect of these variables on foreign direct investment in finances is different before and after 2008 (global economic crisis). In addition, the results also manifest that the regional effect exists. Namely, the effect of these variables on foreign direct investment in finances between G7 countries and G20 countries exist significant difference. Conclusions: Those variables used in this paper are related with foreign direct investment in Finances of (OECD) countries.

• 한국결정성장학회지
• /
• 제27권5호
• /
• pp.263-267
• /
• 2017

Co-Cr 합금은 체내 인공관절용으로 사용될 때 세포 독성이 없고, 생체조직과 반응을 일으키지 않는 뛰어난 생체적합성과 인장강도, 연신율, 내마모성 등의 기계적 성질과 우수한 내마모 특성을 보유하고 있는 것으로 알려져 있다. 또한 Co-Cr 합금은 Carbon 원소를 첨가하여 고용체 강화와 탄화물에 의한 석출강화로 기계적 성질을 향상시키고 내식성을 크게 향상시키고 있다. 본 연구에서는 정밀주조법으로 제조된 인공관절용 Co-Cr 합금 시편의 GPS(Gas Pressured Sintering) 열처리공정에 따른 결정구조 및 미세조직 등의 재료특성 변화를 고찰하였다. XRD 분석을 통하여 as-cast 시편과 GPS 열처리 공정후 시편의 결정상 변화를 고찰하였으며, 제조된 합금의 입계사이에 metal carbide($Cr_{23}C_6$) 석출물들의 생성이 증가되었음을 OM, FE-SEM, EDS 분석으로 확인하였다.

• 기술혁신학회지
• /
• 제5권2호
• /
• pp.129-140
• /
• 2002

This study is try to do the empirical tests on the relationship among innovation cycle, investment cycle, and business cycle suggested in recent economic growth models. We apply co-spectra analysis to estimate dynamic correlations in the extraction HP filtered variables and first difference filtered variables in our data set. Our empirical results are; (i) an existing asynchronization between innovation cycle and investment cycle, (ii) in the long frequency, an existing positive correlation between innovation cycle and business cycle, (iii) in the short frequency, however, a finding the high negative correlation between the two cycle. Our empirical findings support the recent growth through cycle models and suggest some economic policy implementations for economic stabilization during a severe business cycle.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1993년도 하계학술대회 논문집 A
• /
• pp.36-38
• /
• 1993

This study considers the economic aspect of the distribution automation system, which is the decision-making criteria of the electric utilities for the investment. The feeder automation candidate region is divided into two types of the urban and the rural. The total investment cost of the feeder automation for each type is estimated. The annual cost, is also estimated, by finding the fixed charge rate. To compare the annual cost and the economic effect cost, for the investment decision-making, the costs are quantitatively estimated on the following effects : the manpower replacement, the outage cost saving, the main transformer utilization improvement, the feeder utilization improvement, and the line loss reduction.

• International Journal of Contents
• /
• 제8권3호
• /
• pp.42-51
• /
• 2012

Korea has entered into the Post Catching-up era and the necessity of new innovation strategy in response is being raised. This study argues the necessity of new innovation strategy and discusses the issue of co-ordination between R&D and Human Resource for that as the key factor. From empirical analysis, there seems to be restricted inflow of outstanding human resources to manufacturing sectors and lowering effectiveness of major even with the improved compatibility between major and job. Especially, it is severe in the industries with high R&D investment. It can be interpreted as an incoordination of the technological innovation efforts from the aspect of R&D investment with human resource utilization from the aspect of new human resource. The analytical result and interpretation suggests that there should be more active improvement on the co-ordination between innovative manufacturers' efforts and human resource utilization, in order to keep sustainable development.

• 한국레이저가공학회지
• /
• 제11권3호
• /
• pp.21-24
• /
• 2008

Hybrid laser welding technology is a good process to reduce a thermal distortion and increase the productivity. However, it requires a high investment and a massive modification of the fabrication line such as a gantry system, milling machine for the edge preparation, high power laser system and weld machine. Therefore the development of an economical laser welding system is a crucial point to apply this system in shipbuilding yard. In this study, a portable hybrid laser welding carriage was developed for I-butt joint without edge milling. It is expected that the carriage type system could reduce investment cost.

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 2005년도 춘계학술발표회
• /
• pp.1112-1113
• /
• 2005

• 벤처창업연구
• /
• 제19권1호
• /
• pp.1-21
• /
• 2024

최근 고금리, 경기둔화로 인한 벤처투자 위축이 전 세계적으로 진행 중이며, 우리나라도 예외가 아니다. M&A와 상장시장의 침체, 경기불확실성 증가, 기업 파산의 여파로 인한 투자심리 위축으로 벤처기업의 자금조달에 많은 어려움을 겪고 있다. 이렇게 바뀐 경제 환경에서 벤처캐피탈의 투자의사결정 요인도 많은 변화를 나타내고 있다. 하지만, 벤처캐피탈의 투자의사결정에 대한 연구는 일반적인 경제 환경에 초점을 맞추고 있다. 본 연구는 경제 후퇴와 호황에 따라 벤처캐피탈의 투자의사결정 요인이 어떻게 변화하는지를 살펴보았다. 이를 위해 경제 불황과 호황을 모두 겪은 적극적인 벤처 투자자들을 인터뷰하여 벤처캐피탈의 투자의사결정 요인: 1)창업자의 개인적 특성, 2)창업자의 경험, 3) 제품/서비스, 4) 시장, 5) 재무상황, 6) 투자조건, 7) 벤처캐피탈 공동투자가 어떻게 변화하는지를 비교하여 연구하였다. 연구결과, 투자의사결정 요인인 창업자의 개인적 특성, 경험, 제품/서비스는 경제 불황기에 더 높은 중요도를 가졌다. 시장 요인은 경제 호황기에 약간 높은 수준의 중요도를 나타냈다. 재무적 상황과 투자조건 요인은 경제 불황기에 경제 호황기 대비 중요도가 급격히 상승하였다. 마지막으로 벤처캐피탈 공동 투자는 경제 불황과 호황기에 많은 차이를 보이지 않았다. 본 연구는 최근 어려워진 벤처투자 환경에서 벤처캐피탈의 투자의사결정 요인을 보다 심도 있게 이해함으로써, 스타트업의 자금 조달을 돕고, 어려운 시장에서 생존하는 방안 마련에 도움을 준다.

• 동아시아경상학회지
• /
• 제6권3호
• /
• pp.24-36
• /
• 2018

Purpose - From establishing China-Japan diplomatic relations in 1972, the relations between two states has improved a lot, from which makes the government and the people reap much benefit. Owing to this reason, this paper aims at exploiting the impact of exchange rate volatility of RMB on China's foreign direct investment to Japan. Research design and methodology - The quarterly time series data from 2003 to 2016 will be employed to conduct an empirical analysis under the vector error correction model. Meanwhile, a menu of estimated methods such the Johansen co-integration test and the Granger Causality test will be also used to explore the impact of exchange rate volatility of RMB on China's foreign direct investment to Japan. Results - The empirical analysis results exhibit that the real exchange rate has a positive effect on China's foreign direct investment to Japan in the long run. Conversely, the real exchange rate volatility of RMB, the trade openness and the real GDP have a negative effect on China's foreign direct investment to Japan in the long run. However, in the short run, the China's foreign direct investment to Japan, the real exchange rate, the trade openness and the real GDP in period have a negative effect on China's foreign direct investment to Japan in period. Oppositely, the real exchange rate volatility of RMB in period has a positive effect on China's foreign direct investment to Japan in period. Conclusions - From the empirical evidences in this paper provided, it can be concluded that an increase in the exchange rate volatility of RMB can result in a decrease in the China's foreign direct investment to Japan in the long run. However, an increase in the exchange rate volatility of RMB can lead to an increase in the China's foreign direct investment to Japan in the short run. Therefore, the China's government should have a best control of the real exchange rate volatility of RMB so as to improve China's foreign direct investment to Japan.