• Environmental and Resource Economics Review
• /
• v.23 no.4
• /
• pp.719-746
• /
• 2014

This study attempts to estimate the value of the water quality improvement by deriving the equilibrium price of the water pollutant emission permit for the imaginary water pollutant emission trading market. It is reasonable to say that there is already an implicit social agreement for the unit value of water pollutant, when the government set the Total Water Pollutant Loading System for the major river basin as a part of the Comprehensive Measures for Water Management, particularly for the Nakdong River Basin. Therefore, we can derive the unit value of water pollutant emission, which is already implied in the pollution allowance for each city or county by the Total Water Pollutant Loading System. Once estimated, it will be useful to the economic assessment of the water quality related projects. An imaginary water pollutant emission trading system for the Nakdong River Basin, where Total Water Pollutant Loading System is already effective, is constructed for the estimation of the equilibrium price of water pollutant permit. By estimating marginal abatement cost curve or each city or county, we can compute the equilibrium price of the permit and then it is regarded as the economic value of the water pollutant. The marginal net benefit function results from the relationship between the emission and the benefit, and then the equilibrium price of permit comes from constructing the excess demand function of the permit by using the total allowable permit of the local government entity. The equilibrium price of the permit would be estimated to be $1,409.3won/kg{\cdot}BOD$. This is within reasonable boundary compared for the permit price compared to foreign example. This permit price would be applied to calculate for the economic value of the water quality pollutants, and also be expected to use directly for the B/C analysis of the business involved with water quality change.

• The Korean Journal of Nuclear Medicine Technology
• /
• v.22 no.1
• /
• pp.28-34
• /
• 2018

Purpose With regard to the use of radioiodine in domestic medical institution, the case of exceeding the allowance of nuclear safety Act about radioactive concentration in drainage was found. Through understanding the cause of exceeding case and analyzing radioactive concentration in drainage, evaluating the relationship of the public waters in surroundings and usefulness. Materials and Methods From November 1, 2014 to April 30th, 2015, the research is aiming at domestic twenty hospitals for six months. By using a HPGe gamma-ray spectrometer(Canberra DSA-1000) and GENIE-2000 Analysis software for comparative analysis, measuring a radioactive concentration of radioiodine in drainage. Consequently, we confirm the excess of radioactive concentration of radioiodine in seven medical institutions. Results Conducting a survey of twenty hospitals and average radioactive concentration of radioiodine in drainage appears $42,100Bq/m^3$. The features of domestic hospitals where show a high radioactive concentration are a number of medical treatment patient when using radioactive iodine and the absence of private rest room. During I-131 whole body scan, the pretreatment procedure of urinating is considered emission of residual Iodine. In public waters, the cause of exceeding detect on radioactive concentration in drainage suppose a diagnostic radioactive iodine. Conclusion We confirm the importance of enhanced education, providing a safety control instructions and installing a private rest rooms for patients who injected a low capacity radioiodine. Also, constructing institutional and legal management system is considered about the Emission management standard in drainage.

• Environmental and Resource Economics Review
• /
• v.15 no.5
• /
• pp.827-858
• /
• 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 Advanced Marine Engineering and Technology
• /
• v.38 no.2
• /
• pp.123-132
• /
• 2014

The maritime sector is advancing with dedicated endeavor to reduce greenhouse gas in addressing issues with regards to global warming. Since 01 January 2013, the International Maritime Organization (IMO) regulation mandatory requirement for Energy Efficiency Design Index (EEDI) has been in place and should be satisfied by newly-built ships of more than 400 gross tonnage and the Ship Energy Efficiency Management Plan (SEEMP) for all ships type. Therefore, compliance to this necessitates planning during the design stage whereas verification can be carried-out through an acceptable method during sea trial. The MEPC-approved 2013 guidance, ISO 15016 and ISO 19019 on EEDI serves the purpose for calculation and verification of attained EEDI value. Individual ships EEDI value should be lower than the required value set by these regulations. The key factors for EEDI verification are power and speed assessment and their synchronization. The shaft power can be measured by telemeter system using strain gage during sea trial. However, calibration of shaft power onboard condition is complicated. Hence, it relies only on proficient technology that operates within the permitted ISO allowance. On the other hand, the ship speed can be measured and calibrated by differential ground positioning system (DGPS). An actual test on a newly-built vessel was carried out to assess the correlation of power and speed. The Energy-efficiency Design Index or Operational Indicator Monitoring System (EDiMS) software developed by the Dynamics Laboratory-Mokpo Maritime University (DL-MMU) and Green Marine Equipment RIS Center (GMERC) of Mokpo Maritime University was utilized for this investigation. In addition, the software can continuously monitor air emission and is a useful tool for inventory and ship energy management plan. This paper introduces the synchronization and identification method between shaft power and ship speed for EEDI verification in accordance with the ISO guidance.

• Journal of Food Hygiene and Safety
• /
• v.8 no.4
• /
• pp.231-240
• /
• 1993

This study was carried out to find out the content of injurious heavy metals, such as mercury, lead, cadmium and arsenic of marine fish which had been captured in adjacent sea of Korea. From March, 1 to April, 30 in 1993. 60 sample of fishes were collected the adult fish and young fish. These samples were analyzed by the Mercury Analyzer and Inductively Coupled Plasma Emission Spectro Analyzer. The results of the study were summarized as follows: (1) The content of mercury in Therafra chalcograma was 0.112$\pm$0.034 ppm which was higher than other fishes, but Pseudosciaena manchurica and Pampus argenteus had lower (P<0.05). Although lead content of Trichiurus lepturus was 0.359$\pm$0.056 ppm, which was higher than other fishes. The lead content of Theragra chalcograma had lower to the almost same level. The cadmium content of the Theragra chalcograma was 0.069$\pm$0.010 ppm which was higher than other samples, but Pseudosciaena manchurica had 0.039$\pm$0.020 ppm to lower level. Though there was some fluctuation in the arsenic content which was 0.433~3.752 ppm, the arsenic content of Therafra chalcograma was 3.752$\pm$2.873 ppm which was the higher than any other fishes. But there are not statistical significances. (2) Heavy metal content by the maturity of the fishes: Mercury content of the old Pseudosciaena manchurica was 0.055$\pm$0.15 ppm comparing to the young's result of 0.030$\pm$0.009 ppm (P<0.05). Though there were some differences according to the maturity, but thee was no statistical significance. (3) In view of the correlation of the heavy metal content, for Pseudosciaena manchurica, high correlation was founded to r=0.6437 between mercury and cadmium (P<0.05). Though the content of mercury, arsenic cadmium and lead had positive correlation (r=0.2725) and negative correlation (r=-0.3958), but there was no significance at all. The other fishes were not found correlation between the heavy metal content. Positive correlation was found between age with mercury in Pseudociaena manchurica (r=0.7018, P<0.05). The negative correlation of age with lead content in the Pseudociaena Manchurica was signigicant (P<0.05). The correlation coefficient was r=-0.7623. The age with mercury content in Coloabis saira had high correlation (r=0.7201, P<0.05). Through the above analysis, it can get conclusion that injurious heavy metal content of the fishes in Korea such a mercury, lead, cadmium and arsenic were at the level of natural content. At present, guidelines of maximum residue level allowed at foreign countries about the injurious heavy metal have been used according to the kinds of fish but our government guideline for the marine fishes in only total mercury below 0.7 ppm and lead below 2 ppm. So more aggressive guidelines for the allowance level of heavy metals in marine fishes are required for the safety of foods.