• Environmental and Resource Economics Review
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• v.24 no.1
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• pp.109-139
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• 2015

Referring to many previous research on the statistical differences in the figures of energy balance table between that of KEEI and IEA, a study is conducted to provide with a framework for proper comparison, followed by the actual calculation of the differences. Major differences are found for energy oil with its size of over 32% differences in primary energy supply and in energy transformation sectors. In final energy consumption sector, naptha consumption for petro-chemical industry shows 14.58% differences. Overall final energy consumption figure of KEEI after its adjustment to net calorific value as is the case of that of IEA is 3.58% larger than that of IEA. Considering the fact that energy balance table provides the basic information for the understanding of energy sector, further studies seem to be necessary for proper adjustment of current status.

• Proceedings of the Korean Statistical Society Conference
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• 2005.05a
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• pp.121-128
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• 2005

경기를 보다 정확하게 예측하고 대응하기 위해서는 실물경기지표뿐만 아니라 기업과 소비자의 주관적이고 심리적인 판단 즉 경제체감을 파악하여 분석할 필요가 있다. 따라서 이 연구에서는 기업경기 및 소비자 전망조사의 통계자료들을 활용하여 경제체감(Economic Sentiment) 측정을 시도하였으며, EU 접근방식을 적용하여 2003년 1월부터 2005년 3월까지 우리나라의 경제체감지수(ESI)를 작성하였다. 작성한 지수의 상관분석 결과는 경제체감지수(ESI)가 양호한 선행지표로서 기능할 수 있음을 시사하고 있다.

• Journal of Korea Game Society
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• v.13 no.5
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• pp.5-18
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• 2013

The Management of Game Money in online game is considered as a crucial factor for successful game business as well as balancing game economy. The generation and flow of game money have a strong relationship with game contents, entertainment factors, game planning and level design. This paper explores online game economy in various ways especially the matter about managing & controlling game money in this context through theoretical and practical perspectives. It also examines how this management makes an effect on 'Free to Pay' policy and Sales revenue. Finally, this paper draws conclusions about the Management of Game Money which can be considered to be practically useful for game development and management. I hope that the study helps further studies and researches and can be served as a foundation regarding the issue.

• 열린충남
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• s.54
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• pp.6-9
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• 2011

올해 2회를 맞이하는 2011금산세계인삼엑스포는 9월 2일부터 10월 3일까지 32일간 금산군 신대리 국제인삼유통센터 일원에서 "생명의 뿌리, 인삼"이라는 주제로 개최된다. 인삼을 통한 금산지역의 경제적 도약과 건강 생명도시로서 금산의 미래 비전을 제시하는 세계적인 수준의 엑스포이다. 자연의 과학이 만든 생명밸런스라는 부제 아래 인삼의 생명산업화의 가능성을 보게 될 행사 속으로 미리 떠나보자.

• Environmental and Resource Economics Review
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• v.33 no.1
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• pp.1-32
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• 2024

The emissions trading system stands as a pivotal climate policy in Korea, incentivizing abatement equivalent to 87% of total emissions (as of 2021). As the system likely has a far-reaching impact, it is crucial to understand how the real economic activity, energy sector, as well as environment would be influenced by its implementation. Employing a macroeconometric model, this paper is the first study analyzing the effects of the Korean emissions trading policy. It interconnects the Korean Standard Industrial Classification (Economy), Energy Balance (Energy), and National Inventory Report (Environment), enhancing its real-world explanatory power. We find that a 50% increase in emission permit price over four years results in a decrease in greenhouse gas emissions (-0.043%) and downward shifts in key macroeconomic variables, including real GDP (-0.058%), private consumption (-0.003%), and investment (-0.301%). The price increase in emission permit is deemed crucial for achieving greenhouse gas reduction targets. To mitigate transition risk associated with price shocks, revenue recycling using auction could ensure the sustainability of the economy. This study confirms the comparative advantage of expanded current transfers expenditure over corporate tax reduction, particularly from an economic growth perspective.

• The KIPS Transactions:PartB
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• v.12B no.5 s.101
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• pp.595-606
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• 2005

The scale of game development are rapidly increasing as the blockbuster games which cost $7\~20$ billion won, often appear on the markets. The game mechanics which is concentrated on technological elements of the game, necessarily requires the management of quality. In this paper, we propose a computer simulator for the quality evaluation of game mechanics which can analyze the quality accurately and economically in the design phase. The proposed simulator provides Petri net[7,8] and Smalltalk[9] for convenient modeling. The simulator gives the realistic evaluation like play test because it uses the realistic data of gameplay environment such as player action-pattern, game world map, and item DB but the previous evaluation methods can not consider the realistic gameplay environment and can only cover a limited scope of evaluation. To prove good performance of the proposed simulator, we have 80 simulations for the quality evaluation of the game mechanics of Dungeon & Dragon[13,14] in a given world map. The simulation results show that the proposed simulator can evaluate the faultlessness, optimization, and play balance of the game mechanics and gives better good performance than other evaluation methods.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.2135-2139
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• 2007

현재 한국농촌공사에서는 농업용수의 효율적인 관리를 위하여 물관리자동화사업을 시행하고 약 8만ha를 대상으로 418개의 수리시설을 전동화하였다. 물관리자동화사업에서의 물관리는 공급자 위주로서 이미 결정되어진 물의 양을 시기에 따라 적절하게 공급하여 주며 이를 계측하고 제어하기 위한 시설이다. 그러나 현재 실제로 물관리가 일어나는 곳을 말단포장으로서 급수물꼬의 개폐에 따라 농업용수의 공급과 단절이 이루어지고 있다. 이러한 사실에 착안하여 본 연구에서는 급수물꼬를 논의 담수심에 따라 자동으로 개폐시키는 자동물꼬, 논의 담수심과 수로의 유황상황을 체크하여 정보전달을 수행하는 수로수위측정 및 담수심 측정장치, 상기의 논과 수로의 유황정보에 의하여 논에 물을 공급하는 태양광 전동수문, 수로의 수위증감에 따라서 수로의 수압을 일정하게 형성시켜 용수공급을 원활하게 해주며 또 기존의 제수문과는 다르게 항상 수위를 일정하게 유지하면서도 하류방향으로 물을 공급해주는 무동력 자동수문을 개발하여 시스템으로서 구성하여 설치하였다. 현재 담수심 측정 및 수로수위측정장치로부터의 정보전달은 무선으로 하며 이 정보를 기초로 하여 태양광 전동수문의 모터제어부에서 판단을 하여 수문의 개폐를 지시한다. 또한 무동력 자동수문의 경우에는 부력부가 별도로 설치되어 있어서 주수부를 통하여 수로내 수위와 같은 레벨로 물이 유입되고 이를 플로트가 감지하여 수문비 후방에 설치되어 있는 밸런스 웨이트를 제어하여 수문을 개폐한다. 본 무동력 자동수문은 수위를 유지하는 설정수심을 자유로이 변경할 수 있도록 주수부를 개량하였으며 부력부에 오물유입이 되지 않도록 스크린을 주수부의 물유입장소에 설치하였다. 현재까지 시스템의 작동상황에 대한 성능은 양호하다. 다만 향후의 문제점으로서 시스템이 설치된 지역과 설치되지 않은 지역과의 용수사용량을 비교분석하는 작업으로 본 시스템의 경제적 효과 및 효율성을 증명할 필요가 있으며 본 시스템의 실용화시 시스템 사용방안에 대해서는 대규모 평야부와 저수지 지구의 물공급특성이 다르기 때문에 이를 감안한 시스템 구성을 할필요가 있다.

• Journal of Korea Port Economic Association
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• v.24 no.4
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• pp.71-96
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• 2008

The purpose of this study is to suggest the new strategies for West coast ports, especially Mokpo Port development. This paper also analyzes the recently evolving change of shipping environment such as upsizing of vessels, horizontal and vertical integration strategies in the liner shipping industries through the mergers and acquisitions or strategic alliances, establishment of dedicated terminal and surging bunker charge. With shipping environment is rapidly changing, we examine how to cope with the current situation and suggest the solutions how to tackle shippers' and shipping companies' request. As a result of an empirical study, we found out that Mokpo Port suffers from the shortage of container cargo, container imbalance, insufficient forwarders and inland trucking service providers and hinterland transportation network system. With these obstacles settled, the number of container cargo can be induced to Mokpo Port and the regular container services between Mokpo and Chinese ports and Japanese ports loops were found to be competitive.

• Korean Journal of Soil Science and Fertilizer
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• v.39 no.5
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• pp.321-327
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• 2006

In Korea, there is a growing competitive for water resources between industrial, domestic and agricultural consumer, and the environment as many other OECD countries. The demand on water use is also affecting aquatic ecosystems particularly where withdrawals are in excess of minimum environmental needs for rivers, lakes and wetland habits. OECD developed three indicators related to water use by the agriculture in above contexts : the first is a water use intensity indicator, which is expressed as the quantity or share of agricultural water use in total national water utilization; the second is a water stress indicator, which is expressed as the proportion of rivers (in length) subject to diversion or regulation for irrigation without reserving a minimum of limiting reference flow; and the third is a water use efficiency indicator designated as the technical and the economic efficiency. These indicators have different meanings in the aspect of water resource conservation and sustainable water use. So, it will be more significant that the indicators should reflect the intrinsic meanings of them. The problem is that the aspect of an overall water flow in the agro-ecosystem and recycling of water use not considered in the assessment of agricultural water use needed for calculation of these water use indicators. Namely, regional or meteorological characteristics and site-specific farming practices were not considered in the calculation of these indicators. In this paper, we tried to calculate water use indicators suggested in OECD and to modify some other indicators considering our situation because water use pattern and water cycling in Korea where paddy rice farming is dominant in the monsoon region are quite different from those of semi-arid regions. In the calculation of water use intensity, we excluded the amount of water restored through the ground from the total agricultural water use because a large amount of water supplied to the farm was discharged into the stream or the ground water. The resultant water use intensity was 22.9% in 2001. As for water stress indicator, Korea has not defined nor monitored reference levels of minimum flow rate for rivers subject to diversion of water for irrigation. So, we calculated the water stress indicator in a different way from OECD method. The water stress indicator was calculated using data on the degree of water storage in agricultural water reservoirs because 87% of water for irrigation was taken from the agricultural water reservoirs. Water use technical efficiency was calculated as the reverse of the ratio of irrigation water to a standard water requirement of the paddy rice. The efficiency in 2001 was better than in 1990 and 1998. As for the economic efficiency for water use, we think that there are a lot of things to be taken into considerations to make a useful indicator to reflect socio-economic values of agricultural products resulted from the water use. Conclusively, site-specific, regional or meteorogical characteristics as in Korea were not considered in the calculation of water use indicators by methods suggested in OECD(Volume 3, 2001). So, it is needed to develop a new indicators for the indicators to be more widely applicable in the world.