• Economic and Environmental Geology
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• v.26 no.3
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• pp.421-429
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• 1993

Dissolution reactions of chemical grade zinc sulfide and natural sphalerite were studied in ferric chloride solution as an oxidant. To enhance the leaching reaction, ultrasonic technique was employed in this investigation. For the reaction with pure zinc sulfide, chemical reaction was the rate limiting step in the range of low conversion irrespective of applying ultrasonic wave. And the diffusion through liquid film instead of diffusion through product layer of free sulfur was the rate determining step because ultrasonic vibration removes the product from reaction zone. In the case of sphalerite with the ultrasonic vibrator, it was found that inert mineral layer diffusion was the rate determining step, in which the elemental sulfurs formed were removed by the ultrasonic action. Experimental results showed that the ultrasonic technique proved to be the methods which can significants improve the leaching performance.

• Journal of Arbitration Studies
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• v.26 no.4
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• pp.63-82
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• 2016

In order to cope with the changes of International Commercial Arbitration, the Shanghai International Economic and Trade Arbitration Commission (SHIAC) regulated an Emergency Arbitrator for the first time, implementing the arbitration rules in China (Shanghai) Pilot Free Trade Zone on May 1, 2014. Moreover, the China International Economic and Trade Arbitration Commission (CIETAC) also regulated the Emergency Arbitrator in the revised arbitration rules on January 1, 2015. However, it caused considerable contradiction that SHIAC and CIETAC admitted an interim measure decision by the Emergency Arbitrator under the circumstance that the Chinese court can impose a preservative measure in the Civil Procedure Code (CPC) and Arbiration Act. This study attempted to compare the main contents of an Emergency Arbitrator regulated in the arbitration rules of SHIAC and CIETAC with arbitration rules of representative arbitral institutions which operate an Emergency Arbitrator. In addition, this study verified the application features and problems through comparing the rule of SHIAC and CIETAC with the rule related to the preservative measure in Chinese law.

• International Commerce and Information Review
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• v.10 no.4
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• pp.221-250
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• 2008

This study investigated and analyzed the export competitiveness of Gyeonggi-Do and the effect of Korea-US FTA on its export competitiveness. By reviewing the current status of trade structure and implementing trade specialization index(TSI) of export commodities of Gyeonggi-Do, the investigation has listed the specific export commodities with competitiveness for increasing the volume of its export in the United States, in the short, mid and long run perspectives. From the findings in this study, it suggests specific trade and commercial policies to Korea-US FTA including implementing commodity-oriented export supporting system, strategic marketing method, economic-free-zone plan, R&D investment, export financing and regional economic cooperation.

• Journal of Navigation and Port Research
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• v.29 no.4
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• pp.305-312
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• 2005

Pick-up/delivery of consumer goods to offices, shops, and restaurants in order to support urban lives is one of the most vital activities in a city. With economic growth and technological innovation, a greater variety of goods have come to be supplied, and pick-up/delivery of consumer goods has become more complex. Efficient urban goods movement in Central Business District(CBD} starts with an efficient system for loading/unloading, and pick-up/delivery activities. Loading/unloading activity may be carried out on-street, or on especially designated space inside or outside buildings. Therefore, purpose of this study is to clarity the efficient urban goods movement in CBD(also called the pick-up/delivery activity) from the three different types of loading/unloading facilities. For this purpose, the differences in loading/unloading and truck-trip activity time of each loading/unloading facility was compared by performing the simulation analysis.

• The Journal of Economics, Marketing and Management
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• v.7 no.4
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• pp.6-9
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• 2019

Purpose - This research mainly studied with the promotion of "one belt and one road "initiative's strategy and the construction of China, Japan and South Korea Free Trade Zone, China exports urgently needed industrial products to Japan and South Korea, which will not only help digest excess industrial capacity, optimize China's industrial structure, but also promote the economic development of Japan and South Korea. Research design, data, and Methodology - The study conducted a survey on 2018 year new revision of China-Korea Japan's data. Results -This study shows that In this process, multinational enterprises, as pioneers of economic development, play an irreplaceable role. However, due to the differences between laws of different countries and their own corporate culture concepts, enterprises in different countries will inevitably encounter various conflicts in the process of development. Conclusions -This requires our enterprises to have awareness of legal risk prevention in the process of development, and to study the corporate culture of relevant enterprises to truly achieve win-win cooperation.

• Journal of Korean Port Research
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• v.6 no.1
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• pp.3-36
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• 1992

In according to the rapid economic growth and strengthening of economic cooperation of Asian-Pacific countries, Pusan is capable of developing to the international trade center of Pan-Pacific Area. Therefore a lot of functional preparations are required for the international trade center. First the expansion and functional specialization of harbor which is a gateway of international physical distribution is required. Second, raising physical distribution inducement effect through establishment of free trade zone and producing financial and information service accompanied with trade activity through establishment of international financial center and teleport are necessary. And the research complex of high technology (sciencepark) which utilizes the industrial base of Pusan area is necessary for the development of Pusan toward the international trade city. And the establishment of marine sightseeing complex in Pusan utilizing the ocean natural resource is helpful for the growth of Pusan to the international trade center.

• Economic and Environmental Geology
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• v.35 no.5
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• pp.421-428
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• 2002

Lab-scale experiments were conducted to evaluate the effect of surface tension reduction on the extension of the influence zone and the VOC removal efficiency of ground water sparging. A glass column packed with coarse sand was used for VOC removal test at two different surface tensions. A glass column without porous media was also used fer control purpose prior to sand-packed column test. A quasi-two-dimensional glass box model, packed with a sand, was used fer sparging zone tests at different water surface tensions. Surface tension of the aquoues solution used in this study was controlled using sodium dodecyl sulfate (SDS). For the glass, sand column experiments, total amount of air filled in the media increased as surface tension decreased. Toluene (used as VOC in this study) removal rate increased slightly with decreased surface tension f3r both free water column and sand-packed column. Air sparging zone extended up to 500% as the surface tension decreased. Combining the results from two different experiments, VOC removal efficiency is expected to increase significantly with surface tension reduction.

• Journal of the Economic Geographical Society of Korea
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• v.23 no.1
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• pp.93-109
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• 2020

The purpose of this study is to examine the effects of industrialization and urbanization of Gwangyang Bay Region on the change of urban system and spatial structure between triangle-cities located in Gwangyang Bay, Yeosu City, Suncheon City, and Gwangyang City, one of the famous industrial zones in Korea. Large-scale development projects carried out by the central government in the Gwangyang Bay Region such as construction of the Second Oil Refinery in the mid-1960s, completion of the POSCO Gwangyang Steelworks in the mid-1980s, construction of the Gwangyang Port Container Terminal in 1987 and designation of the Gwangyang Bay Area Free Economic Zone in 2003, and EXPO 2012 Yeosu Korea, affected to changes of the urban system and spatial structure between triangle-cities in Gwangyang Bay Region. The above four-development projects transformed the urban and spatial structures between the three cities in the Gwangyang Bay Region from a mononuclear urban system centered on Suncheon to a network city system. Historically, Suncheon has served as an exclusive center in the eastern region of Jeonnam, including the Gwangyang Bay Region. However, the hosting of the 2012 Yeosu Expo Korea is reorganizing the three cities into a network-type spatial structure with the strengthening of connectivity and integration in the region. And this trend is expected to intensify in the future.

• Information Systems Review
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• v.24 no.2
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• pp.21-40
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• 2022

The purpose of this study is to find factors that Incheon International Airport should focus on and improve in order to have hub-competitiveness through economic zone centered on airport. Text analytics was conducted on online review written by passengers who used world class transit airport to derive environmental factors. After that, we select 15 major factors among the derived environmental factors based on the previous studies. This study used IPA analysis for experts in aviation field to investigate the importance and performance of the factors. Results showed that performance was evaluated to be lower than importance in all factors, and accessibility(convenience, diversity, cost and time), free economic zone and various shopping facilities were top 3 factors to be specifically improved. This study is meaningful in that it can understand passengers' perceptions by using the advantages of text analysis and surveys method. The result of study can be used to establish policy and strategic directions to solidify the position of hub airports in the future.

• Economic and Environmental Geology
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• v.35 no.5
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• pp.455-463
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• 2002

There have been few geophysical studies on the crustal structure of the continent-ocean zone around the middle eastern part of Korean peninsula, because of the lack of database in both land and ocean. The area for the study on the internal crustal structure using gravity data is bounded by the latitude of 37$^{\circ}$-38"N and longitude of 128$^{\circ}$-132$^{\circ}$E. WCA correction is applied to shipborne gravity data to integrate with gravity anomalies obtained on land. The high frequency components of the shipborne gravity data which are considered as the noise on survey track are effectively removed by means of correlating with satellite gravity data. The corrected shipborne free-air gravity anomaly is integrated with the Bouguer gravity anomaly on land under the same condition. The integrated gravity anomaly is divided into four areas for power spectrum analysis. The depths of Moho discontinuity increases gradually from inland to Ulleung basin. As the result of modeling based on power spectrum analysis, Moho discontinuity depth is about 33-35 km in the continental zone of Korea and 18-28 km at the continental margin. Such structural character is well elucidated in changing gravity data around Ulleung basin. The depths of Moho discontinuity in the southern ocean of Ulleung-island is 16--17 km, which is much lower than in the land. The result of crustal structure modeling in this study is similar to that computed by prior seismic exploration around this area.