• KIEAE Journal
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• 제10권3호
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• pp.37-42
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• 2010

Together with the concern about the indoor air quality as sick house syndrome, the Ministry of Environment announced "Indoor Air Quality Control Law for the Multi Purpose Facility," which made the interests to be focused in the urgent understanding of current condition and preparation of measures about the indoor air pollution. The law was revised to obligatorily notify the amount of Formaldehyde and Volatile Organic Compounds in the case of newly constructed apartments with more than 100 houses. School also have its own indoor air quality guideline. Indoor air quality in school is very important because, children who very weak to indoor pollutants reside long time in there. The purpose of this paper is to to survey indoor air quality in school by field measurement. Field measurements were performed in 11 schools which were selected from 3 major cities(Incheon, Dae-jeon, chuncheon) in korea, Totally concentration of indoor pollutants were determined in 32 classroom. Target air pollutants were TVOC, formaldehyde, dust, CO, CO2. For the result of this investigation, Indoor air quality in classroom was very poor and it was found that some pollutants(TVOC, float bacteria) exceed the guideline.

• 한국태양에너지학회 논문집
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• 제27권1호
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• pp.63-74
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• 2007

Together with the concern about the indoor all quality as sick house syndrome, the Ministry of Environment announced "Indoor Air Quality Control Law for the Multi Purpose Facility," which made the interests to be focused in the urgent understanding of current condition and preparation of measures about the indoor air pollution. In Dec 2005, the law was revised to obligatorily notify the amount of Formaldehyde and Volatile Organic Compounds in the case of newly constructed apartments with more than 100 houses. School also have its own indoor air quality guideline, Indoor air quality in school is very important because, children who very weak to indoor pollutants reside long time in there. The purpose of this paper is to survey indoor air qualify in school by field measurement. Field measurements were performed in 11 schools which were selected from 3 major cities(Incheon, Dae-jeon, chuncheon) in korea, during July, 2004. Totally concentration of Indoor pollutants were determined in 27 classroom. Target air pollutants were TVOC, formaldehyde, dust, CO, CO2 and NO2. For the result of this investigation, Indoor air quality in classroom was very poor and it was found that some pollutants (TVOC, float bacteria) exceed the guideline.

• Nuclear Engineering and Technology
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• 제53권12호
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• pp.4033-4041
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• 2021

To better understand the permeability of uranium sandstone, improve the leaching rate of uranium, and explore the change law of pore structure characteristics and blocking mechanism during leaching, we systematically analyzed the microstructure of acid-leaching uranium sandstone. We investigated the variable rules of pore structure characteristics based on nuclear magnetic resonance (NMR). The results showed the following: (1) The uranium concentration change followed the exponential law during uranium deposits acid leaching. After 24 h, the uranium leaching rate reached 50%. The uranium leaching slowed gradually over the next 4 days. (2) Combined with the regularity of porosity variation, Stages I and II included chemical plugging controlled by surface reaction. Stage I was the major completion phase of uranium displacement with saturation precipitation of calcium sulfate. Stage II mainly precipitated iron (III) oxide-hydroxide and aluminum hydroxide. Stage III involved physical clogging controlled by diffusion. (3) In the three stages of leaching, the permeability of the leaching solution changed with the pore structure, which first decreased, then increased, and then decreased.

• The Journal of Asian Finance, Economics and Business
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• 제9권2호
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• pp.49-59
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• 2022

The relationship between income inequality and capital account openness is empirically investigated in this study, where macroeconomic variables have opposing effects. Panel data used in the study from the KAOPEN Index and World Bank consists of 28 Asian countries and has been examined; it contains annual observations from 1970 to 2018. The data is examined using a random-effect model based on GMM estimates. Income inequality and capital account openness are positively and significantly related, according to our findings. Overall, the findings imply that increasing income gaps reduced capital investment in nations with large discrepancies. The growing economic discrepancy is being caused by the rich's increasing income share at the expense of the poor. In Asia, inward capital account openness exacerbates income inequality, while outward capital account openness exacerbates it. As a result, income inequality slows economic growth, leading to inflation, unemployment, and increased government spending in several Asian countries. Our control factors, GDP, and other secondary school enrolments, all had a statistically significant negative relationship with income inequality. Income disparity has a positive and statistically significant association with government spending, inflation, population, trade openness, and unemployment. Income disparity has a negative association with capital account openness, gross domestic product, and secondary school enrollment.

• Nuclear Engineering and Technology
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• 제55권6호
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• pp.2011-2017
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• 2023

Gas submerged jet is an outstanding thermohydraulic phenomenon in pool scrubbing of fission products during a severe nuclear accident. Experiments were performed on the hydraulic characteristics in the ranges of air mass flux 0.1-1400 kg/m²s and nozzle diameter 10-80 mm. The results showed that the dependence of inlet pressure on the mass flux follows a power law in subsonic jets and a linear law in sonic jets. The effect of nozzle submerged depth was negligible. The isolated bubbling regime, continuous bubbling regime, transition regime, and jetting regime were observed in turn, as the mass flux increased. In the bubbling regime and jetting regime, the air volume fraction distribution was approximately symmetric in space. Themelis model could capture the jet trajectory well. In the transition regime, the air volume fraction distribution loses symmetry due to the bifurcated secondary plume. The Li correlation and Themelis model showed sufficient accuracy for the prediction of jet penetration length.

• Computers and Concrete
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• 제32권1호
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• pp.45-60
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• 2023

Concrete in water environment is easily subjected to the attack of leaching, which causes its mechanical reduction and durability deterioration, and the key to improving the leaching resistance of concrete is to increase the compaction of its microstructure formed by the curing. This paper performs a numerical investigation on the intrinsic relationship between microstructures formed by the hydration of cement and slag and leaching resistance of concrete in water environment. Firstly, a shrinking-core hydration model of blended cement and slag is presented, in which the interaction of hydration process of cement and slag is considered and the microstructure composition is characterized by the hydration products, solution composition and pore structure. Secondly, based on Fick's law and mass conservation law, a leaching model of hardened paste is proposed, in which the multi-species ionic diffusion equation and modified Gérard model are established, and the model is numerically solved by applying the finite difference method. Finally, two models are combined by microstructure composition to form an integrated curing-leaching model, and it is used to investigate the relationship between microstructure composition and leaching resistance of slag-blended cement pastes.

• 무역상무연구
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• 제44권
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• pp.111-180
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• 2009

According to English law, in a voyage policy there is an implied warranty that at the commencement of the voyage the ship shall be seaworthy for the purpose of the particular adventure to be insured. However, Unites States law affords the implied warranty of seaworthiness a great deal of latitude. In the case of voyage policies, it has been traditionally held that the assured is bound not only to have his vessel seaworthy at the commencement of the voyage but also to keep her so, insofar as this can be achieved by himself and his agents, throughout the voyage. Additionally, a defect in seaworthiness, arising after the commencement of the risk, and permitted to continue from bad faith or want of ordinary prudence or diligence on the part of the insured or his agents, discharges the insurer from liability for any loss consequent to such bad faith, or want of prudence or diligence; but does not affect the insurance contract in reference to any other risk or loss covered by the policy, and which is not caused or exacerbated by the aforementioned defect. One of the most important areas of difference in the marine insurance contract between the U.K. and U.S. is the breach of warranty. Prior to the Wilburn Boat case, the MIA was thought to hold that the effect of a breach of warranty was similar under American law -in that under the general maritime law literal compliance with all promissory warranties is required. In this case, the Court concluded that state law should apply to a marine insurance policy, and found that there was no federal rule addressing the consequences of a breach of warranty in marine polices. However, it is of the utmost importance that this case brought to a close the imperative concordance between English and American law. Meanwhile, in relation to marine insurance contracts in Korea, this insurance is subject to English law and practice;, additionally, the international trade volume between Korea and the United States has assumed a vast scale. Therefore, we believe it is important to understand the differences in marine insurance law between the two countries in terms of marine insurance contracts, and most specifically warranties.

• 대순사상논총
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• 제34집
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• pp.203-238
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• 2020

外國宗教或外國宗教法人到臺灣發展可能會遇到的法律風險以及該如何控管, 本文先以外國宗教到臺灣發展的可能性做法, 該法律規範, 類型, 流程, 注意事項…等作為本文撰寫之目的, 以便外國宗教一開始來臺灣發展時, 可以選擇適合自己的方式參考進行之。外國宗教若欲來臺發展, 其發展方式可能有幾種方法可以遵循 : 1. 宗教人士個別在臺傳教 2. 宗教團體在臺傳教, 樣態可為幾種 : 1) 以寺廟(或有宗教稱為「靈臺」)型態呈現。2) 以人民團體 (非法人宗教團體) 方式呈現。3) 未辦理登記寺廟(或有宗教稱為「靈臺 」) : 係事實上已存在之募建寺廟(或有宗教稱為「靈臺」)建築物, 因未符合辦理寺廟(或有宗教稱為「靈臺」)登記規定者, 而依據『未辦理登記寺廟(或有宗教稱為「靈臺」)補辦登記作業要點』要點所稱之未辦理登記寺廟(或有宗教稱為「靈臺」)。3. 非屬前者之具有辦事處及獨立之財產與宗教目的, 但未經政府立案或未經登記為寺廟(或有宗教稱為「靈臺」)者 (非法人宗教團體)。4. 在臺設立研究中心 : 外國宗教在外國已經設立財團宗教法人時, 來到臺灣設立分部, 得以研究中心的形態出現。5. 在臺設立法人 : 區分為「學校法人」, 「宗教社團法人」與「宗教財團法人」。以上各種類型各有不同對應的設立準據法適用依據, 本文將介紹各該準據法內容, 並介紹重要內容, 例如有關經費的部分, 對於績優宗教團體設有獎勵規範, 宗教團體申請外籍人士來臺研修教義的要點規範, 如為外文文件, 並應備具中文譯本等規定。外國宗教在臺發展因有涉外因素, 涉外民事法律適用法為我國選擇法規適用的母法, 該外國法人之屬人法事項依據涉外法規定, 係參考1979年泛美商業公司之法律衝突公約第2條及義大利國際私法第25條第1項等立法例之精神, 均採法人之設立準據法主義, 明定所有法人均以其所據以設立之法律為其本國法, 故外國宗教法人在臺之法律問題涉及到屬人法事項時, 係以其據以設立之法律為其本國法, 而外國法人之下列內部事項, 亦是依其本國法為準據法。

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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• pp.91-94
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• 1996

This paper presents an approach to estimation of learning gain in iterative learning control for discrete-time affine nonlinear systems. In iterative learning control, to determine learning gain satisfying the convergence condition, we have to know the system model. In the proposed method, the input-output equation of a system is identified by neural network refered to as Piecewise Linearly Trained Network (PLTN). Then from the input-output equation, the learning gain in iterative learning law is estimated. The validity of our method is demonstrated by simulations.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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• pp.12-15
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• 1996

In this paper, a new shape control law is derived as a result of introducing the parametric curve representation. This control alw is based on the estimation of the curve parameters corresponding to the target joint positions and the target tip position. Estimating target curve parameters makes it possible to find, easily, a simple shape control law by the Lyapunov design method.