• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.8
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• pp.5327-5332
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• 2014

In Korea, the quantitative growth rate of artificial reef construction is supposed to reach the peak point. Therefore, new approach is needed to the point of artificial reefs business. Functional reefs, such as shellfish reefs, recreational reefs, seaweed reefs, and fish reefs, are beneficial alternatives. This study conducted hydraulic testing to assess the stability of corrugated artificial reefs (ARs) that were constructed to promote the growth of shellfish and seaweed. The results of this study showed that some dimensionless design parameters affected the stability of corrugated artificial reefs under a range of wave and water depth conditions in a fixed bed condition. The findings also highlight the importance of hydraulic experiments in solving the problems that have emerged in the design and construction of artificial reefs.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.202-210
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• 2012

Since Civil Law recognizes the freedom of a testament, it recognizes the freedom allowing the decedent to dispose his/her own property at his/her own intention. However, in order to prevent various abuses which may occur when the principle of freedom of testament is carried out unlimited, secured portion system is stipulated. So, absolute freedom of property disposed by the deceased is limited. Likewise, the secured portion system is introduced as the system to resolve the contradiction that exists between principle of freedom of testament and legal inheritance. Since Supreme Court Decision 2010DA50809 delivered on May 24, 2012 includes major legal issues such as how to exercise of claim of return for secured portions, transfer of the secured proportion or the claim of return for secured portions, and exercise of claim of return for secured portions against a third party. So, it has a very important meaning. In this paper, legal issues regarding the exercise of claim of return for secured portions have been reviewed with this decision.

• Journal of the Korean Geotechnical Society
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• v.18 no.3
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• pp.105-112
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• 2002

Increases in excess pore water pressure without change of surcharge load were reported in clay underneath embankment at Berthierville and Olga sites after the end of construction. These abnormal phenomena could not be explained by classical consolidation theory. This paper presents a nonlinear viscoplastic model to interpret an increase in pore water pressure on natural clay, The proposed model can consider the combined processes of pore water pressure dissipation according to Darcy's law and pore water pressure generation due to viscoplastic strain, as well as time-dependent viscoplastic behaviour and strain rate dependency of preconsolidation pressure. The calculated results using numerical analysis are compared with measured ones under embankments built on soft clay at Berthierville and Olga in Quebec, Canada. It may be possible to explain the phenomenon of excess pore water pressure increase after the end of construction using the proposed nonlinear viscoplastic model.

• Geomechanics and Engineering
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• v.14 no.4
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• pp.337-344
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• 2018

The study of the mining effect influenced by a normal fault has great significance concerning the prediction and prevention of fault rock burst. According to the occurrence condition of a normal fault, the stress evolution of the working face and fault plane, the movement characteristics of overlying strata, and the law of fault slipping when the working face advances from footwall to hanging wall are studied utilizing UDEC numerical simulation. Then the inducing-mechanism of fault rock burst is revealed. Results show that in pre-mining, the in situ stress distribution of two fault walls in the fault-affected zone is notably different. When the working face mines in the footwall, the abutment stress distributes in a "double peak" pattern. The ratio of shear stress to normal stress and the fault slipping have the obvious spatial and temporal characteristics because they vary gradually from the higher layer to the lower one orderly. The variation of roof subsidence is in S-shape which includes slow deformation, violent slipping, deformation induced by the hanging wall strata rotation, and movement stability. The simulation results are verified via several engineering cases of fault rock burst. Moreover, it can provide a reference for prevention and control of rock burst in a fault-affected zone under similar conditions.

• The Journal of the Korea Contents Association
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• v.13 no.4
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• pp.187-197
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• 2013

The incompetency and quasi-incompetency system regulated legal incompetence in the past is insufficient for protections of the adults with insufficient abilities of judgement, the criticism has been continued that the system is not efficiently respond to their rights and legal relationship formation. At last, the government introduces adult guardianship system through revising the civil law. At this point, just several months prior to the enforcement of adult guardianship system, we should be prepared to issues which may occur in the actual operation of the system. Japan has high similarities in social and culture matters with Korea and in the general operation of its adult guardianship system is similar to Korea's, Therefore, Korea should be prepared for the basis to implement the optimized system through in advance understanding the trend in Japan. The study reviews the trends of Japanese adult guardian's type, and draws suggestions for Korea by finding activity requirements and subjects focusing on the currently increasing corporation guardiancy.

• Journal of the Korea Concrete Institute
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• v.27 no.2
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• pp.169-176
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• 2015

Since the size effect law announced currently has been based on the normal weight concrete, for light weight concrete having different fracture characteristics, its application is questionable. Accordingly, in this study, a model equation to predict the effect of dried unit weight of the concrete on size effect of its compressive strength was developed and a database using existing research results was created. After determining the experimental constants of prediction models of Ba${\check{z}}$ant based on nonlinear fracture mechanics, Kim and Eo, and this study using the database, their results are mutually compared. Finally, it was found that the prediction model of this study considered dried unit weight of concrete predicted well the test results for light weight concrete than that of the models of Ba${\check{z}}$ant and Kim and Eo.

• Journal of Navigation and Port Research
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• v.34 no.3
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• pp.251-255
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• 2010

A marine accident is caused various legal liability such as compensation for damages on civil law, responsibility on the Criminal Code and administrative sanctions. The results occurred by any acts is not connected directly to the legal responsibility. As a prior condition for these legal liabilities, it is required the causation between the act caused and the occurrence of the effect. It is very difficult to find out the cause in marine accidents, because of trouble of a proof security, the place occurred, time difference between accident and investigation point of time etc.. However, finding out the correct cause is an element important to prevent similar accident and to determine the liability reverted. The logical concept of the causation is not limited, but there is early necessity to limit it in the liability reverted. Therefore, this study aims to suggest reasonable standard to determine liability reverted in marine accidents.

• Journal of Digital Convergence
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• v.18 no.10
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• pp.129-136
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• 2020

The purpose of this study is to identify the influence of external-social and cultural factors on the perception of corruption in the public society through the Structural Equation Model(SEM) and to seek ways to reduce corruption in the public society. Currently the level of corruption in public sectors that people think is still large, and it is necessary to continuously reduce corruption in public sectors in order to improve national competitiveness. Since one society is a part of a country in system theory and social network theory, public society needs quantitative research in order to find the causes of corruption and solve them. The model was built and the variables were defined in SEM based on 600 questionnaires. As a result of analysis, corruption in public offices has decreased since the implementation of the solicitation and graft law, and socio-cultural factors have had a direct impact on corruption in public offices. The further research area is to seek detailed ways for transforming the education and awareness of civil society across the country in addition to the efforts of the public officials themselves in order to reduce corruption in public offices.

• Convergence Security Journal
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• v.12 no.2
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• pp.33-41
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• 2012

Important crime prevention is emphasized. Depending on the type of criminal act itself, but with many material and human damage because it is a threat to the safety of civil life. The traditional police power of the police in patrolling the derailment by the diversification of the crime, globalization, organizing, specialization, and ferocious anger by far exceeds the capabilities of the police crime prevention are occurring. Civilian police crime prevention organizations in the area of the region as a base for complementary activities, and even if the purpose of commercial availability, but many organizations is the autonomous and spontaneous personality voluntary work civic life is to serve as the safety fence. But that suits the role of these organizations and social support and lack of institutional support and practical and effective crime prevention activities has not been effective. Law reform and the role of the Organization for the maintenance of redundancy, or a series of systematic effort to equip networks and take advantage of the functional and has been factory.

• Journal of the Korean Society for Marine Environment & Energy
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• v.6 no.1
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• pp.21-29
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• 2003

Fishing, aquaculture, coastal tourism and port activities in southern coastal seas are important to the Korean economy Conventional strategies or quick-fixes may not be the best means of addressing coastal issues. Coastal issues in Korean coastal sea include harmful algal blooms (HAB), oxygen depletion, and sea grass disappearance. Regional coastal management plans have been developed during 2001~present after inauguration of Coastal Management Law in 1999. Activities such as eco-pioneer cities, pollution reduction, constitutional rearrangement, environmental regulation, monitoring indicators, and budgeting would be included in regional coastal management Planning. The successful implementation of integrated coastal management is largely dependent on the engagement of government and non-government organizations to increase the chorus of concern. The need to involve coastal area residents in restoring activities was addressed with the creation of NGOs' Association for Masan Bay Restoration (NAMR). Several restoration efforts by NAMR are currently underway in Masan Bay coastal zone with scientific and local knowledge. A new level of dialogue was achieved suggesting a sustainable picture of Masan Bay coastal area regarding to a new port construction.