• Journal of the Korean association of regional geographers
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• v.8 no.4
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• pp.451-467
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• 2002

The Yeongsan River is one of major rivers in South Korea, and its basin is one of core areas that produce foods for the nation. The Yeongsan River Basin has flood plain and hill areas well developed, and areas surrounding the Yeongsan Lake has a tidal mud-plat widely dispersed. The flood plains are called 'Deul'. In particular, at the upstream of 'Mulmok' with a narrow valley are widely spread flood plain. The flood plains were developed into rice paddies until the end of Joseon Dynasty. Local core cities were created against these agricultural lands. Hills are called 'Deung', 'Kkageum' and 'Yasan' and in particular, are widely distributed in Naju City and Yeongam County. Forest land on hill began to be seriously developed into agricultural land from the 1960s, and this development is being pursued even today. Much fanning are conducted in the form of leased fanning by outside people. Tidal mud-plats were widely distributed along the downstream of the Yeongsan River, Namhae Bay. Tidal mud-plat is called 'BBeolbat' and tidal channel is called 'Gaeong.' After the estuary dyke of the Yeongsan River was built in 1981, the tidal mud-plat was developed into agricultural land in large-scale reclamation projects, and changed into 'Yeongsan Plains,' With the appearance of new plains, locals' life fundamentally changed, turning all villages into pure farm villages.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.63
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• pp.111-132
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• 2014

This paper analyzed the obligations of the parties entering into an international leasing agreements, focusing on the Draft Common Frame of Reference (DCFR) Book IV, Part B. The lessor's obligations are as follows. i) The lessor must deliver goods to the lessee by the due date of delivery so that the lessee can use the goods on the starting date of the lease agreement. ii) The lessor must conform with the contract so that the goods meet the purpose of the contract at the start of the lease agreement and throughout the period of the lease agreement. iii) If the lessee returns the goods upon the termination of the lease agreement, the lessor must cooperate with the lessee. The lessee's obligations are as follows. i) The lessee must pay rent, which is the most critical obligation of the lessee. ii) The lessee must cooperate with the lessor so that the lessor can perform the obligation to deliver the goods and accept the goods of which the lessee shall take control. iii) The lessee shall perform fiduciary duties while it uses and makes profits from the goods, and when the lessor cannot take any measure to protect the object, the lessee must prevent damage. Further, if the lessor pays expenses that are not considered necessary expenses, the lessor may not be reimbursed and must accept the goods after delivery to preserve them. iv) The lessee must give notice to the lessor if there is a possibility that a third party can claim rights to goods or infringe upon the lessor's ownership while using the goods. v) At the end of the lease period, the lessee must return the goods to the lessor.

• Journal of Korean society of Dental Hygiene
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• v.13 no.2
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• pp.343-350
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• 2013

Objectives : The objective of this study is to analyze about learning styles and self-regulated learning strategies of dental hygiene students and to find methods that may increase learning outcomes by selecting effective learning methods. Methods : The subjects of this study are 524 dental hygiene students in region of chonbuk from May, 2012 to June, 2012. collected informations are analyzed with SPSS. Results : 1. 38.1%, assimilator is most of learning styles of dental hygiene students, followed by 29.7%, converger, 16.2%, diverger, 15.8%, accommodator. 2. 28.0%, converger and diverger are most of subjects whose grade score is between 2.0-2.9, 41.50%, accommodator is most of 3.0-3.4, and 41.61% accommodator is most of 3.5-3.9, and 28.0%, converger is most of subjects whose grade score is more than 4.0. this results has statistically signification(p<0.01). 3. $8.71{\pm}1.78$, assimilation strategy is most self-regulated learning strategies of dental hygiene students, followed by $8.26{\pm}1.94$, control strategy, $7.52{\pm}2.00$, memorization strategy. accommodator is most showed $7.82{\pm}2.24$, $9.13{\pm}1.74$, $8.71{\pm}2.20$ in memorization strategy, assimilation strategy, control strategy. 4. It is showed that assimilator is significantly related with satisfaction for major(p<0.01), accommodator is significantly related with academic records(p<0.05), and diverger is significantly negative related with academic records, through the results of the analysis of factors that affects learning styles. Conclusions : Organizing above results, It is considered that instructor needs to acknowledge learning styles of students through understanding about various learning styles of students, and may has to develop suitable teaching method for students based on that.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.43 no.2 s.308
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• pp.40-51
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• 2006

As computer games become more complex and consumers demand more sophisticated computer controlled NPCs, developers are required to place a greater emphasis on the artificial intelligence aspects for their games. The platform for game NPC Intelligence Development should support real-time, independence, flexibility, group behavior, and various A.I to NPC that are reactive, realistic and easy to develop. This paper presents an architecture to satisfy these criteria for the platform of game NPC intelligence development. The proposed platform shows the higher performance than existing platform through the load sharing, and it also has some advantages which are supporting the various AI techniques, efficient group behavior, and independence to develop NPC intelligence.

• Resources Recycling
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• v.11 no.6
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• pp.31-37
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• 2002

Microstructure of aluminum alloys produced by the different mixing ratio of secondary ingot made by aluminum UBC (used beverage can) and virgin aluminum was investigated. The phase transitions of casted ingot by heat treatment were also studied. The alloys were melted at the electric resistance furnace, then casted using ceramic filter. Homogenization heat treatment was conducted at $615^{\circ}C$ for 10hrs to control cast microstructure. There were several kinds of phases, in as-cast condition, such as $\alpha$($Al_{12}$ $((Fe,Mn)_3$Si), $\beta$($Al_{6}$ (Fe,Mn)), and fine $Mg_2$Si phases. Especially, the amount of $\beta$-phase which was harmful in forming process was large. The $\beta$-Phase formed was transformed to u-phase by heat treatment. The fine $Mg_2$Si in the aluminum matix was also transformed to $\alpha$-phase by this heat treatment. Impurities filtered during casting process were identified as intermetallic compounds of Fe, Cu, Si.

• Korean Journal of Materials Research
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• v.26 no.3
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• pp.154-159
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• 2016

A roll-bonding process was applied to fabricate an AA1050/AZ91/AA1050 laminate complex sheet. Two AA1050 and one AZ91 magnesium sheets of 2 mm thickness, 30 mm width and 200 mm length were stacked up after surface treatment that included degreasing and wire brushing; material was then reduced to a thickness of 3 mm by one-pass cold rolling. The laminate sheet bonded by the rolling was further reduced to 2 mm in thickness by conventional rolling. The rolling was performed at 623K without lubricant using a 2-high mill with a roll diameter of 210 mm. The rolling speed was 15.9 m/min. The AA1050/AZ91/AA1050 laminate complex sheet fabricated by roll bonding was then annealed at 373~573K for 0.5h. The microstructure of the complex sheets was revealed by electron back scatter diffraction (EBSD) measurement; the mechanical properties were investigated by tensile testing and hardness testing. The strength of the complex sheet was found to increase by 11 % and the tensile elongation decreased by 7%, compared to those values of the starting material. In addition, the hardness of the AZ91 Mg region was slightly higher than those of the AA1050 regions. Both AA1050 and AZ91 showed a typical deformation structure in which the grains were elongated in the rolling direction; however, the mis-orientation distribution of grain boundaries varied greatly between the two materials.

• Journal of Environmental Impact Assessment
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• v.12 no.1
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• pp.23-34
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• 2003

The emergency response modeling system CARIS has been developed at CCSM (Center for Chemical Safety Management), NIER (National Institute of Environmental Research) to track and predict dispersion of hazardous chemicals for the environmental decision support in case of accidents at chemical or petroleum companies in Korea. The main objective of CARIS is to support making decision by rapidly providing the key information on the efficient emergency response of hazardous chemical accidents for effective approaches to risk management. In particular, the integrated modeling system in CARIS consisting of a real-time numerical weather forecasting model and air pollution dispersion model is supplemented for the diffusion forecasts of hazardous chemicals, covering a wide range of scales and applications for atmospheric information. In this paper, we introduced the overview of components of CARIS and described the operational modeling system and its configurations of coupling/integration in CARIS. Some examples of the operational modeling system is presented and discussed for the real-time risk assessments of hazardous chemicals.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2000.11a
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• pp.385-394
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• 2000

기업간 및 기업 대 정부간 문서교환의 요구를 충족시키기 위한 일원으로 기업들은 산업 표준에 따른 전자문서교환(EDI)에 많은 관심과 노력을 기울여왔으며, 국내에서는 한국 EDIFACT위원회를 중심으로 전자문서 표준화가 이루어졌다. 국내 수출업자들이 관세청에 수출신고를 위한 통관 EDI 교환은 주로 부가가치통신망(VAN) 사업자들을 통해 이루어지고 있으나 이러한 EDI 중계 서비스는 특정 VAN사업자들을 통해 EDI서비스가 독점됨에 따라 서비스 이용에 있어 값비싼 전송료 및 통신망 임차비, 잦은 통신 지연, 기업 내부 시스템과의 연계의 어려움 등으로 인하여 많은 문제점을 낳았다. 현재 이러한 전통적 방식의 EDI를 인터넷 기반으로 전환할 때 인터넷의 개방성과 저렴한 사용비용등의 장점으로 인해 비용절감과 사용자 편이성을 크게 증가시킬 것으로 기대된다. 본 연구에서는 인터넷과 웹을 이용하여 통관 EDI 중계 시스템을 개발하였다. 현재 수출을 하고자 하는 주체는 관세청에서 반드시 EDI로 수출에 관한 신고를 하여야 하는바, 본 시스템은 이러한 EDI신고를 인터넷상에서 가능하도록 한 것이다. 본 연구에서는 기존 HTML에서 진일보한 차세대 마크업 언어인 XML을 이용하였다. 본 연구에서 구축한 XML/EDI 통관시스템은 수출신고에 필요한 11개의 전자문서에 대한 XML Schema를 디자인하고, 사용자 관리, SchemaStyleTemplate 관리, XML/EDI 문서관리 XML/EDI변환, EDI 송수신 관리, 인증관리, 로그관리 등의 모듈을 지니고 있으며 개방형 EDI와 인터넷 EDI의 장점을 취합하여 설계되었다. 본 시스템은 기존의 UN/EDIFACT표준을 사용하고 있는 EDI환경과 기존 VAN 방식의 EDI 중계 시스템과 연동되며, 향후 관세청의 XML/EDI 표준 시행을 미리 대비하는 선도연구로서 자리매김이 된다. 본 연구에서는 개발된 XML/EDI 통관시스템은 향후, 서비스의 최대 걸림돌이 되어왔던 값비싼 EDI 사용료의 부담에서 벗어날 수 있게 할 것이며, 저렴한 EDI구축/운영 비용으로 전자문서교환의 활성화와 XML이 인터넷 기반의 문서유통 표준으로 자리매김할 수 있는 중요한 계기가 될 것이다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.5
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• pp.143-150
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• 2019

Cloud computing has recently become an attractive solution for massively multiplayer online games(MMOGs), as it lifts operators from the burden of buying and maintaining hardware. Peer-to-peer(P2P) -based solutions present several advantages, including the inherent scalability, self-repairing, and natural load distribution capabilities. We propose a hybrid architecture for MMOGs that combines technological advantages of two different paradigms, P2P and cloud computing. An efficient and effective provisioning of resources and mapping of load are mandatory to realize an architecture that scales in economical cost and quality of service to large communities of users. As the number of simultaneous players keeps growing, the hybrid architecture relieves a lot of computational power and network traffic, the load on the servers in the cloud by exploiting the capacity of the peers. For MMOGs, besides server time, bandwidth costs represent a major expense when renting on-demand resources. Simulation results show that by controlling the amount of cloud and user-provided resource, the proposed hybrid architecture can reduce the bandwidth at the server while utilizing enough bandwidth of players.

• Korea Real Estate Review
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• v.28 no.3
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• pp.79-94
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• 2018

This study analyzed the factors associated with residential mobility based on the data from the 11th to the 19th wave of the Korean Labor & Income Panel Study (KLIPS). After grouping low-income households within the first to the fourth income bracket into households that exhibited no income bracket change and those with income bracket changes during the research period, this study examined the effects of the income situation of each group on residential mobility. According to the results of the analysis, in the group of households that showed no low-income bracket change, significant effects were found only in the age of the head of the household, housing cost, and rental deposit (Jeonse) and monthly rental of the household. In the group of households that showed low-income bracket changes, findings were generally in line with those of the whole household, where total income and the number of full-time employees in the household were the same as those of the whole household, indicating that it would be necessary to improve the employment stability of low-income households. Based on the findings of this study, housing inequality is intensifying within low-income households, and, thus, housing policies, based on continuing surveys, must be implemented to enhance income opportunities and stabilize the housing needs of low-income households.