• 한국전산유체공학회:학술대회논문집
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• 2009.11a
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• pp.121-128
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• 2009

During a hypothetical high-pressure accident in a nuclear power plant (NPP), molten corium can be ejected through a breach of a reactor pressure vessel (RPV) and dispersed by a following jet of a high-pressure steam in the RPV. The dispersed corium is fragmented into smaller droplets in a reactor cavity of the NPP by the steam jet and released into other compartments of the NPP by a overpressure in the cavity. The fragments of the corium transfer thermal energy to the ambient air in the containment or interact chemically with steam and generate hydrogen which may be burnt in the containment. The thermal loads from the ejected molten corium on the containment which is called direct containment heating (DCH) can threaten the integrity of the containment. DCH in a NPP containment is related to many physical phenomena such as multi-phase hydrodynamics, thermodynamics and chemical process. In the evaluation of the DCH load, the melt dispersion rates depending on the RPV pressure are the most important parameter. Mostly, DCH was evaluated by using lumped-analysis codes with some correlations obtained from experiments for the dispersion rates. In this study, MC3D code was used to evaluate the dispersion rates in the APR1400 NPP during the high-pressure accidents. MC3D is a two-phase analysis code based on Eulerian four-fields for melt jet, melt droplets, gas and water. The dispersion rates of the corium melt depending on the RPV pressure were obtained from the MC3D analyses and the values specific to the APR1400 cavity geometry were compared to a currently available correlation.

• Journal of Korea Game Society
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• v.15 no.1
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• pp.77-88
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• 2015

As the smart phone market is drastically expanding, there is a steady growth of recent vicious activities such as data manipulation, billing fraud, identity theft, and leakage of personal information that are security threats to Social Network Games(SNG). Due to the threats, Strong development standard is required for security enhancement of SNG. Nonetheless, short life-spans, additional expenses, and the necessities to provide a sound game service hinders developers from reaching their security goals. Therefore, this research investigates the weak points of SNG through memory manipulation experiments based on the currently provided SNG services. In addition, the research presents counter measures and security enforcements that are light in service load and simplistic which can be applied in the developing process.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.46-53
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• 2002

Although Public Construction Works in Korea have been executed according to Government Contract Act, and nature of contract is very complicated. So it is difficult to define liability for the defects. Therefore the studies on the defective performance and contractor's defects liability were remained one of the non-cultivated virgin land. As a result, contract privy waive the right to claim or generally resolve the problems. Therefore domestic and overseas liability for the defects was investigated and liability for the defects, under and after construction, on the defective performance and defects, was analysed. With a literature research, contractor's defect liability was systematically analyzed, problems were defined and resolution of the problem were suggested item by item in this study.

• Journal of Korea Port Economic Association
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• v.24 no.2
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• pp.19-41
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• 2008

The purpose of this study aims to explore scope of damages resulted from early redelivery under time charter with the Golden Victory case. In this case, disputes arose in relation to the quantum of damages recoverable by th owners. The owners contended that the second Gulf War was irrelevant to their claim, which was to be assessed at the difference between the charter rate and the lower market rate for the whole of the remaining four-year period of the charterparty. The charterers contended that since clause 33 would have entitled them to cancel the charter on the outbreak of the second Gulf War, two years after the repudiation, the owners' claim for damages only ran for those two years. There was no such rule as was contended for by the owners, and that the damages had to reflect the fact that, had there been no repudiatory breach, the charterparty would not have run its full term because the charterers would have cancelled the charter on the outbreak of the second Gulf War.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.26
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• pp.35-86
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• 2005

International distributorship contract(IDC), as well as international agency contract is a type of contract which is most frequently used in international trade. But one of the main difficulties faced by parties of IDC is the lack of uniform rules for this type of contract. This means that both parties should be careful about each clause of the contract when they draw up it. The ICC prepared model form which incorporates the prevailing practice in international trade, and which aims at protecting and balancing the legitimate interests of both parties. This author examined the several important clauses in this model contract. The purpose of this examination is to help the contracting parties for better understanding and applying them in their actual contracting practice, which based on this model contract. When the supplier and the distributor execute their contract or use ICC Model Contract, they should be careful about the following points: First, some terminologies(like, "territory", "product", "competing products" and "exclusivity") should be clearly defined in their contract. Second, regarding the supplier's functions including "supplying products" and the distributor's responsibility including "undertaking not to compete", and "attaining guaranteed minimum targets", both parties should make clear about each party's right and obligation as well as one party's remedies available when other party makes breach of its obligation. Third, both parties should examine the relationship between the "exclusivity" or "sole" and competition law which is regarded as a mandatory rule in the territory. Forth, when both parties lay down "termination clause" in the contract, they should make clear about the indemnity in case of termination. Fifth, as there is not uniform law for the distributorship contract, it is inevitable to choose any local law as an applicable law in case of litigation. So both parties should keep in mind to insert arbitration clause to avoid the application of the local law. Besides, both parties should consider their individual and specific circumstances and try to reflect them in their contract by Annex I to XI attached to the end of model contract.

• Journal of Korean Neurosurgical Society
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• v.58 no.1
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• pp.9-13
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• 2015

Objective : To improve pedicle screw placement accuracy with minimal radiation and low cost, we developed specially designed K-wire with a marker. To evaluate the accuracy of thoracolumbar pedicle screws placed using the novel guide-pin and portable X-rays. Methods : Observational cohort study with computerized tomography (CT) analysis of in vivo and in vitro pedicle screw placement. Postoperative CT scans of 183 titanium pedicle screws (85 lumbar and 98 thoracic from T1 to L5) placed into 2 cadavers and 18 patients were assessed. A specially designed guide-pin with a marker was inserted into the pedicle to identify the correct starting point (2 mm lateral to the center of the pedicle) and aiming point (center of the pedicle isthmus) in posteroanterior and lateral X-rays. After radiographically confirming the exact starting and aiming points desired, a gearshift was inserted into the pedicle from the starting point into the vertebral body through the center of pedicle isthmus. Results : Ninety-nine percent (181/183) of screws were contained within the pedicle (total 183 pedicle screws : 98 thoracic pedicle screws and 85 lumbar screws). Only two of 183 (1.0%) thoracic pedicle screws demonstrated breach (1 lateral in a patient and 1 medial in a cadaver specimen). None of the pedicle breaches were associated with neurologic or other clinical sequelae. Conclusion : A simple, specially designed guide-pin with portable X-rays can provide correct starting and aiming points and allows for accurate pedicle screw placement without preoperative CT scan and intraoperative fluoroscopic assistance.

• Journal of KIISE
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• v.42 no.6
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• pp.713-722
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• 2015

As open-source software (OSS) becomes more widely used, many users breach the terms in the license agreement of OSS, or reuse a vulnerable OSS module. Therefore, a technique needs to be developed for investigating if a binary program includes an OSS module. In this paper, we propose an efficient technique to detect a particular OSS module in an executable program using its function-level features. The conventional methods are inappropriate for determining whether a module is contained in a specific program because they usually measure the similarity between whole programs. Our technique determines whether an executable program contains a certain OSS module by extracting features such as its function-level instructions, control flow graph, and the structural attributes of a function from both the program and the module, and comparing the similarity of features. In order to demonstrate the efficiency of the proposed technique, we evaluate it in terms of the size of features, detection accuracy, execution overhead, and resilience to compiler optimizations.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.43
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• pp.239-273
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• 2009

Marine insurance contracts, which intended to provide indemnity against marine risks upon the payment of a premium, originated in Northern Italy in the late 12th and early 13th centuries. The law and practice of Italian merchants were later introduced into England through Lombard merchants. It is, therefore, quite exact that English and Continental marine insurance law have common root. Nevertheless, some significant divergences between English and Continental marine insurance systems occurred since the late 17th century, mainly due to different approaches adopted by English courts. The rule of warranty in English marine insurance was established in the second part of the 18th century by Lord Mansfield, who laid the foundations of the modern English law of marine insurance and developed different approaches, especially in the field of warranty in marine insurance law. Since the age of Lord Mansfield, English marine insurance law has developed a unique rule on warranty. Bearing in mind the realities of the 18th century, it could easily be understood why Lord Mansfield afforded such a strict legal character to marine warranties. At that time, the 'promise' given by the assured, played an important role for the insurer to assess the scope of the risk. Legal environments, however, have changed dramatically since the times of Lord Mansfield. Of course, it is still important that the assured keep his promises to the insurer under the insurance contract, which is based upon utmost good faith. Nevertheless, the remedy of automatic discharge from liability, regardless of existence of a casual link between the breach and loss seems harsh in the realities of the 21st century. After examining the warranty regime adopted by the German and Norwegian hull clauses, it is fair to say that they provide a more equitable approaches for the assured than does English law. Therefore, this article suggests that English warranty regime needs overall reform and it is time to reform.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.69
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• pp.407-426
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• 2016

The Marine Insurance Act 1906 (MIA 1906) has been a successful piece of legislation, having rarely been amended and having established, or served as an influence in the development of, the basis of marine insurance legislation in several countries. However, it has been recognised that some parts of the MIA 1906 have begun to show their antiquated nature, especially where established principles which were once thought to reflect undoubted propositions of law are now being openly criticised. Since 2006, the Law Commission and Scottish Law Commission (the 'Law Commissions') have been engaged in a major review of insurance contract law, finally leading to the Insurance Act 2015. The Insurance Act 2015 received Royal Assent on 12 February 2015, and was based primarily on the joint recommendations of the Law Commissions. The 2015 Act made substantial changes to several main areas of marine insurance law & practice: (i) the replacement of the pre-contractual duty of disclosure with a duty to make a "fair presentation of the risk"; (ii) the abolition of the "insurance warranty" under the Marine Insurance Act 1906, s.33, and provision of a new default remedy of suspension of liability until the breach is cured; (iii) partial codification of the fraudulent claims rule in insurance contract law, etc. The Act did not provide for any new statutory duty for insurers to investigate or pay claims in a timely fashion, although this may be revisited in the next Parliament. Moreover, the Law Commissions have reopened their consideration of the doctrine of insurable interest. The 2015Actmay not then signal the end of the legislative programme in this area.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.3 no.3
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• pp.201-211
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• 2005

In this study, conventional head-end processes of spent TRISO fuel have been reviewed to develope more effective treatment methods. The main concerns in the TRISO treatment are to effectively separate the carbon and SiC contained in the TRISO particles. The crush-burn scheme which was considered in the early stages of the development has been replaced by the crush-leach process because of $^{14}C$ problems as a second waste being generated during the process. However, there are still many obstacles to overcome in the reported processes. Hence, innovative thermomechanical concepts and a molten salt electrochemical approach to breach the coating layers of the TRISO particle with a minimized amount of second waste are proposed in this paper and their principles are described in detail.