• Journal of Digital Contents Society
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• v.7 no.2
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• pp.89-94
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• 2006

It can be said that P2P means the pattern that every linker could be both a supplier and a customer by means of the direct connection and survey with personal computers out of the concept of server and client. P2P business has been a great impact all over the world. for it came to be possible as the express internet log-on service is getting widely used and the user environment is getting better with the supply of high-tech computer. Recently the various system of P2P has been developed not as the only service of file share between the personal users but as the application of the electronic trade between the companies. This study is to suggest the most effective system that has the function of complement of P2P.

• Journal of the Korea Society of Computer and Information
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• v.6 no.3
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• pp.91-101
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• 2001

In this paper, we examined the concept and introduction effect of internet E-commerce. We analysed some factors are influenced to the B2B internet E-commerce. According to the result Environment factors divided into uncertainty and industrial competition factors, organization factors divided into scale, concentration of decision making, standardization of work. And information system take in IS/IT infra structure, integration of information technology Throughout this study, Enterprises which was introduced to the B2B internet E-commerce enable to be provided for introduction Judgment, guide of decision making, successfully adaptation, furthermore enlarged e-commerce trade.

• Journal of Food Hygiene and Safety
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• v.35 no.3
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• pp.243-251
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• 2020

In this study, we investigated pesticide residues in 207 agricultural products distributed by direct trade in the northern area of Gyeonggi Province. A total of 94 general agricultural products and 113 eco-friendly agricultural products collected from local grocers and cooperative stores were analyzed by multiresidue method for 263 pesticides using GC (gas chromatography)/ECD (electron capture detector), GC/NPD (nitrogen phosphorus detector), GC-MS/MS (tandem mass spectrometry), LC (liquid chromatography)/PDA (photodiode array detector), LC/FLD (fluorescence detector), LC-MS/MS. All samples showing pesticide residues were general agricultural products collected from local food stores. The pesticide residue levels of 14 samples (6.8%) were below the maximum residue limits (MRLs) and one of them (0.5%) exceeded the MRLs. Sixteen pesticides were detected from samples of the following produce items: spinach, young cabbage, perilla leaves, mallow, cucumber, chives and water dropwort. The safety of the detected pesticides was assessed by monitoring the daily intake estimate (EDI) and the daily intake allowance (ADI) based on the amount of pesticides detected. The ADI percentage range (the ratio of EDI to ADI) was 0.0134-61.6259% and there was no health risk connected with consuming agricultural products in which pesticide residues were detected.

• Resources Recycling
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• v.19 no.4
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• pp.3-12
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• 2010

Countries which have a lot of metal resources are weaponizing metal resources such as supply limitation, high price sale. It's necessary for us to establish the countermeasure for recycling of used metal resources on a government basis. Ministry of Environment has established and announced the project for finding and reuse the hidden metal resources as pan-government department pass the Cabinet meeting at September 22, 2009. This countermeasure, 10 years project, is classified into 2 steps. Aim of this project is advance of the recycling technology and industry, achievement of recycling rate, 75%, improvement in adverse balance of trade, 1.25 billion US$.

• Journal of the Korean Society of Marine Environment & Safety
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• v.18 no.4
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• pp.345-351
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• 2012

The major trade area of the South Korea is divided into Asia, America and Europe. Generally, marine transportation is the main method of mass cargo transportation, but unlike others, rail transportation is available in the Europe area. Also, as a result of China's growth, South Korea's position as northeast Asia logistics hub has weakened. That is the reason why we need to pay attention to rail transportation, an alternative competitive structure. In accordance with this background, this study focuses on analyzing economic feasibility comparing transportation routes to Europe using Trans-Korea Railway and Trans-Siberia Railway. Factors of analysis are transportation distance, period, cost and additional cost As the result, considering economic feasibility, TKR-TSR route(Route1) is the best transportation approach for six routes. Therefore, using TKR-TSR railway will be the best way to increase nation's competitiveness, in response to Russia government's far-east development strategy.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.1
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• pp.18-28
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• 2018

As the Korean navy's capabilities increase, it becomes increasingly necessary to develop sufficient navigational capabilities and train proficient seafarers. However, in terms of securing personnel resources, seafarers will need to be utilized more effectively due to the population decline of recent years. This paper reviews the use of civilian maritime personnel to research potential resources and uses the U.S. military sealift command as a benchmark. As a result, it has been found that it is possible to increase naval combat capability through the establishment of like a military sealift command organization to operate defense civilian support vessels. In addition, it is possible to train civilian seafarers by utilizing the current national education system through existing maritime universities. Furthermore, taking these actions will allow the ROK navy to operate its onboard ship reserve service and designated international ship system more efficiently.

• Environmental and Resource Economics Review
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• v.15 no.5
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• pp.827-858
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• 2006

The paper presents game theoretic models for self-enforcing coalition formation in order to sustain effective international environmental agreements(IEAs). The model analyzes how the intrinsically strategic nature of a government's environmental policies(the emission allowance standard) calls for rules to sustain an IEA. Focusing on the recent theoretical developments in the infinitely repeated game, the paper introduces some mechanisms to show how self-interested sovereign countries are cooperatively able to maintain an IEA rather than defect to initially profit at the expense of a pollution heaven later on. For a more realistic case needed to sustain an IEA, an optimal international environmental policy with both signatories and non-signatories under imperfect monitoring is also explored. In this extension of the model, the derivation process for a critical discount factor, a trigger price level and the length of punishment period is briefly discussed.

• Journal of the Korean Society of Marine Environment & Safety
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• v.21 no.6
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• pp.712-720
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• 2015

The cabotage rule has been protecting the domestic industry from foreign competitions as a kind of trade barrier. In the United States, the shipbuilding industry has been maintained with the help of to the strict cabotage operations by reinforcing advantages for domestic crews and ships which are built in the U.S. For most countries, cabotage has been granted legitimacy in their coastal shipping by Low Carbon Transport in terms of economic and emergency reasons. The cabotage rule is required in the stable supply of the seafarers which rely on the legitimate maritime education. This study analyzes Korean cabotage system and the problems with regard to seafarers education. It is found that the resolution is set up the cabotage act such as Jones Act, U.S.

• Journal of Korea Water Resources Association
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• v.46 no.10
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• pp.997-1004
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• 2013

There is imminent need to find a way to measure the recreational benefits of water so that appropriate actions can be taken to make a multi-purpose reservoir. Therefore, this study attempts to apply a choice experiment to quantifying the recreational benefits of a multi-purpose reservoir, using a specific case study of Sangkwan multi-purpose reservoir. We consider the trade-offs between price and attributes of recreational attributes for selecting a preferred alternative and derive the marginal willingness to pay (MWTP) estimate for each attribute. The results show that the MWTP for providing additional 10,000 ton of water is estimated to be 3 won per household per year. The MWTP for improving 1 level of water quality is computed to be 645.5 won per household per year. Moreover, the MWTP for providing recreation facilities is calculated to be 1,518.6 won per household per year. This study allows us to provide policy-makers with useful quantitative information that can reduce uncertainty in the decision-making process related to a multi-purpose reservoir construction projects.

• Journal of Digital Convergence
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• v.13 no.8
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• pp.123-131
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• 2015

Modern is the era of convergence. In the complex position of the company to survive in the rapid environmental changes it can not be a mandatory fusion rather than choice. Wind convergence also in the art can be said to castration. This phenomenon can be found in many real life. Most real-life contact with the service sector is no exception. Due to a number of banks and insurance combined Banca named fusion of French banking and insurance business are integrated. Even recently, the situation has been provided by Investment consulting, equity trading services within bank branches. In this study, based on the need for convergence of corporate businesses convergence factors examined through regression analysis on whether any impact on the financial aptitude. External environmental factors that make up the fusion research factors internal environmental factors, both core competencies were factors to affect financial performance.