• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.18 no.2_spc
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• pp.317-325
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• 2020

The Korea Radioactive Waste Agency plans to expand the storage capacity of radioactive waste by constructing a radioactive waste inspecting building to solve the problem of the lack of inspection space and drum-handling space in the radioactive waste receipt and storage building for the first-stage disposal facility. In this study, the exposure doses of radiation workers that handle new disposal containers for decommissioning waste in the storage areas of the radioactive waste inspecting building were calculated using the Monte Carlo N-particle transport code. The annual collective dose was calculated as a total of 84.8 man-mSv for 304 new disposal containers and an estimated annual 306 working hours for the radiation work. When the 304 new disposal containers (small/medium type) were stored in the storage areas, it was found that 25 radiation workers should be involved in acceptance/disposal inspection, and the estimated exposure dose per worker was calculated as an average annual value of 3.39 mSv. When the radiation workers handle the small containers in high-radiation dose areas, the small containers should be shielded further by increasing the concrete liner thickness to improve the work efficiency and radiation safety of the radiation workers. The results of this study will be useful in establishing the optimal radiation working conditions for radiation workers using the source term and characteristics of decommissioning waste based on actual measurements.

• The Korean Journal of Nuclear Medicine Technology
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• v.16 no.2
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• pp.12-17
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• 2012

Purpose : The patient's clothes and sheet after radioiodine therapy must be disposed of by related regulation. That must be disposed of as radioactive wastes, but that is reusing after radioactivity decay by keeping for the certain period of time. In general, The minimum storage period calculate by standard of take radioactive substance out of radiation controlled area based on measured surface contamination level. But the measurements of surface contamination level are able to differ by measurement method. In this paper, I wish to calculate the minimum storage period of patient's clothes and sheet after radioiodine therapy by measure nuclide concentration offered by the regulation on self-disposal of radioactive wastes. Materials and Methods : The whole area of patient's clothes and sheet measured 31 patients(male:9 patients, female:22 patients), who had radioiodine therapy(3.7 GBq:13 patients, 5.55 GBq:16 patients, 7.4 GBq:2 patients) from july 2011 to march 2012. The minimum storage period is calculated by the regulation on self-disposal of radioactive waste(100 Bq/g) and standard of take radioactive substance out of radiation controlled area(4 kBq/m2) Results : The minimum storage period of pillow sheet, upper uniform, lower uniform by standard of take radioactive substance out of radiation controlled area were each 4.6 days, 63days, 78 days. The minimum storage period of pillow sheet, upper uniform, lower uniform by the regulation on self-disposal of radioactive waste were each 18.1 days, 43 days, 62 days. Conclusion : We can verify that patient's clothes and sheet after radioiodine therapy exists a great deal of radioactive contamination. The minimum storage period calculation of patient's clothes and sheet is better suited to applying nuclide concentration offered by the regulation on self-disposal of radioactive waste. I recommend, To keep for at least 2 months of the patient's clothes and sheet contaminated radioactivity, for prevent contamination and unnecessary radiation exposure.

• The Korean Journal of Air & Space Law and Policy
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• v.30 no.2
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• pp.177-199
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• 2015

Commerce enriches human life enriched and within commerce, transportation of cargo is arguably the most important in business transactions. Traditionally, marine transport has been major commercial transaction, but carriage cargo by air is on the increase. While the fare for freight in comparison with that of ocean is higher, air freight has many benefits that justify the higher shipping fee; lower insurance premium, packing charges, inventory control, cost management and especially speed. Therefore, air freight transport is accumulating gradually. An air waybill(AWB) is needed in the air transport flow. It is a nonnegotiable security, so the holder cannot transfer of a right to a third party. Some scholars suggest that a negotiable AWB is needed. However, it seems nearly impossible to do so; an e-AWB use shows a gain in numbers, even if it has not met expectations. Going forward, it would appear reasonable to conduct a follow-up study on the utility and legal problem for e-AWB. After sending goods, the consignor has the right of disposition of cargo in some cases, and more research is necessary, because it is related to change of ownership and a trade settlement. According to WATS (World Airlines Transport Statistics), the Korean Air took third place in international freight in 2014, and fifth in total, domestic and international to great acclaim. However, there is a lack of research supporting the business showing. It is hope that more studies on e-AWB, stoppage in transit, and a risk of outstanding amount, etc. connect to develop Korean air freight industry.

• The Journal of the Korea Contents Association
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• v.9 no.1
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• pp.304-311
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• 2009

This article proposes a new time-based depreciation method using the accumulated depreciation rate function. The method can systematically compute the depreciation charge of each period, in every case where the charge is constant or decreasing or increasing, and solve the problems of depreciation methods currently used, by obtaining the accumulated depreciation charge at any given time. We can choose diverse rational depreciation types for the characteristic of every asset with the new method, and compute the depreciation charge with consistency in all cases where assets are owned for partial period.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.8 no.3
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• pp.247-260
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• 2010

The developement of a HLW disposal canister is under way in KAERI using Cold Spray Coating technique. To estimate corrosion behavior of a cold sprayed copper, a creivice corrosion test was conducted at Southwest Research Institute(SWRI) in the United State. For the measurement of repassivation potential needed for crevice corrosion, three methods such as (1) ASTM G61-86 : Cyclic Potentiodynamic Polarization Measurements, (2) Potentiodynamic Polarization plus intermediate Potentiostatic Hold method, and (3) ASTM G192-08 (THE method) : Potentiodynamic- Galvanostatic-Potentiostatic Method, were introduced in this report. In the crevice corrosion test, the occurrence of corrosion at crevice area was optically determined and the repassivation potentials were checked for three kind of copper specimens in a simulated KURT underground water, using a crevice former dictated in ASTM G61-86. The applied electrochemical test techniques were cyclic polarization, potentiostatic polarization, and electrochemical impedance spectroscopy. As a result of crevice corrosion tests, every copper specimens including cold sprayed one did not show any corrosion figure on crevice areas. And the open-cell voltage, at which corrosion reaction initiates, was influenced by the purity of copper, but not their manufacturing method in this experiment. Therefore, it was convinced that there is no crevice corrosion for the cold sprayed copper in KURT underground environment.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7690-7697
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• 2015

This study is to reveal structural causal relationship of individual factors influencing association member's substantive payment in the economic view which is a critical factor of project implementation and identify its influence through simulation and actual proof analysis. As the results of analysis, the first, association member's substantive payment is decided to allow for the difference between special price for association members and general price and the profit arising between the time of approval of disposal plan and moving in. The second, on analysis of sensitivity of individual factors influencing association member's substantive payment, floor area ratio applied to project has the biggest influence. Association member's payment is also greatly influenced by the subject of cost allocation for establishing infrastructure in project area. The third, this study set up a structure model based on causal relationship among the factors deciding association member's payment and empirically examined influence and path of influence which the individual factors exercise. The result indicates that control elements and regional characteristic elements influence association member's payment through the medium of plan elements.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.17 no.3
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• pp.339-346
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• 2019

Based on the $8^{th}$ Basic Plan for Electric Power Demand and Supply, an estimation has been made for inventories and characteristics of spent fuel (SF) to be generated from existing and planned nuclear power plants. The characteristics under consideration in this study are dimensions, fuel array, $^{235}U$ enrichment, discharge burnup, and cooling time for each fuel assembly. These are essentially needed for designing a disposal facility for SFs. It appears that the anticipated quantity by the end of 2082 is about 62,500 assemblies for PWR SFs. The inventories of Westinghouse-type and Korean-type SFs were revealed to be 60% and 40%, respectively as of the end of 2018. The proportion of SFs with initial $^{235}U$ enrichment below 4.5 weight percent (wt%) was shown to be approximately 90% in total as of the end of 2018. As of 2077, more than 97% of SFs generated from Westinghouse-type nuclear reactors were shown to have cooling time of over 50 years. As of 2125, more than 98% of SFs generated from Korean-type nuclear reactors were shown to have cooling time of over 45 years. Based on these results, for the efficient design of a disposal system, it is reasonable to adopt two types of reference spent fuel. SF of KSFA with $^{235}U$ enrichment of 4.5 wt%, discharge burnup of 55 GWd/tU, and cooling time of 50 years was determined as reference fuel for Westinghouse-type SFs; SF of PLUS7 with $^{235}U$ enrichment of 4.5 wt%, discharge burnup of 55 GWd/tU, and cooling time of 45 years was determined as reference fuel for Korean-type SFs.

• Journal of Information Technology and Architecture
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• v.11 no.1
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• pp.75-80
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• 2014

At the time the interest and love of the Korean professional baseball is increasing, the need for effective recruiting method rising. Recruiting existing methods were scheme based on expert evaluation, to obtain the players of each team. However, the existing method does not reflect only objective rating but also subjective way of school tie and delays are effect. Therefore the conventional method could not be the efficient. Therefore this paper analyze Korea baseball player's efficiency based on entire team and each team by using DEA (Data Envelopment Analysis) method, and use this efficiency to discuss effective way of recruiting players. Finally, the validity of experiment is confirmed by the matters of actual sell of players who are scouted by experiment.

• VENDING MACHINE INDUSTRY
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• no.summer
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• pp.19-29
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• 1999

이제야 희망이 보인다. 그동안 자판산업계의 고질적인 문제점이자 대표적인 특소세 적용의 부당 케이스로 논란이 일었던 스티커자판기 품목에 대한 특소세 적용이 연이은 행정심판 승소로 꺼져 가는 시장에 있어 새로운 희망의 빛을 던지고 있다. 지난 6월 2일 부산지방법원 행정1부 (재판장 진병춘 부장판사)는 한보전기가 스티커자판기를 고급사진기로 보고 특별소비세 30${\%}$를 부과하는 것은 부당하다며 부산 동래세관을 대상으로 낸 특소세 부과처분 취소 소송에서 원고승소 판결을 내렸다. 이번 승소판결은 특히 지난 4월 21일 삼원사진기기의 서울행정법원 승소판결에 이은 연이은 승소로 스티커자판기에 대한 특소세 제외는 이제 거부할 수 없는 대세적인 흐름을 맞았다는 점에서 큰 중요성을 갖는다. 그동안 산업계는 영업용기기이며 가뜩이나 고가형기계인 스티커자판기 품목에 대한 $30{\%}$의 특소세 적용으로 단기간안에 경쟁력을 잃고 시장이 사양길로 접어드는 어려움을 겪어 왔다. 물론 이번 판결은 피고측의 항소로 인한 고등법원 제판결과를 좀더 지켜봐야 하겠지만 보통 납세자 측이 1건도 아닌, 2건의 판결에서 승소한 상황을 고려할 때 특별한 이변이 없는 한 스티커자판기의 특소세 논란은 번복 없이 막을 내릴 확률이 높다. 애초 가능성이 희박 할 것이라는 주위의 부정적인 시각을 일소시킨 일대 쾌거라 할 수 있는 이번 승소. 그러나 앞으로 최종 승소와 완전한 특소세 철회의 길을 가기 위해서는 아직도 과제가 많다. 특히나 중요한 점은 관련업체들이 적극 연계해서 더욱 큰 결속력을 형성해야 하는 일이다. 금호에서는 이같이 중요한 시점에서 과연 산업계가 어떠한 대응을 준비해야 하고, 향후 시장상황이 어떠한 반전의 계기를 맞아 갈 수 있을 지에 대해 집중진단해 보는 시간을 마련했다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.11a
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• pp.609-624
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• 2017

4차 산업혁명을 위한 국가연구개발사업에서 연구자 중심의 자율과 책임이 강조되고 있다. 자율과 책임의 연구문화를 위해서는 연구자의 자율성 보장을 확대하는 한편 책무를 다하지 못한 연구자에 대해서는 일관성 있는 제재조치를 강구해야 한다. "과학기술기본법", "국가연구개발사업 관리 등에 관한 규정"에 따를 때 연구자에게 부여되는 제재조치는 크게 참여제한, 사업비 환수, 제재부과금으로 구분될 수 있는데 본 연구에서는 일정기간 연구자의 국가연구개발사업에 참여를 제한하는 제재조치에 초점을 맞추어 살펴보고자 한다. 현재 법령상의 국가연구개발사업 참여제한 조문 규정은 연구자의 책임성 강화를 위한 '가중 규정'을 신설하는 과정에서 일부 법령 해석상의 문제가 제기되었다. 따라서 본 연구에서는 "과학기술기본법", "국가연구개발사업 관리 등에 관한 규정"의 참여제한 규정을 중심으로 연구개발과제의 수, 참여제한 사유의 동일여부, 적발시점에 따라 사례를 구분해 현 참여제한 제재조치 규정을 적용해보고 발생할 수 있는 문제점을 살펴봄으로서 4차 산업혁명 시대 연구자에게 책임감을 부여하기 위한 제재조치의 일관성을 확보 할 수 있는 개선방향을 제언하고자 하였다.