• Electronics and Telecommunications Trends
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• v.34 no.1
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• pp.132-141
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• 2019

In this article, I summarize the various academic documents and regulatory agency reports on the Zero-Rating, and describes the type classification, major cases, and policy trends of major countries. In the case of Korea, the lack of academic research and the policy making work are relatively late compared to the advanced countries, so I hope that this paper will be helpful for the development of domestic academic research and policy direction in the future.

• Communications of the Korean Mathematical Society
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• v.14 no.2
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• pp.441-447
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• 1999

A free boundary problem is derived from a singular limit system of a reaction diffusion equation whose reaction terms are bistable type. In this paper, we shall consider a free boundary problem with two layers satisfying the zero flux boundary condition and shall show that the Hopf bifurcation can not occur as a parameter varies.

• 전기의세계
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• v.29 no.11
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• pp.693-698
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• 1980

We T.E.C. have commenced to develop the O.F. cable in April, 1977. Now we have finished the Type-Test and produced in full-operation of 154KV 1x600mm$^{2}$ and 154KV 1x1200mm$^{2}$ O.F. cables. Especially we have completed pulling and splicing of the 24.82kms O.F. cable in KaeBong-OuRyu Route, and now it is operating well. This has important meaning that Extra High Voltage Under Ground Transmission Line has constructed by domastic engineers for the first time in Korea. Thank to arrange and publish it, and hope it can be helpful to the related.

• Archives of Plastic Surgery
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• v.35 no.5
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• pp.553-559
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• 2008

Purpose: The lateral orbital wall fractures have been previously classified by some authors. As there are some limitations in applying in their own classifications, we hope to present a refined classification system of the lateral orbital wall fracture and to identify the correlation between the specific type of the fracture and clinical diagnosis. Methods: The facial bone CT scans and medical records of 78 patients with the lateral orbital wall fractures were reviewed in a retrospective manner. The classification is based on the CT scan. In type I, the fracture and its segments are away from the lateral rectus muscle and in type II, they are next to or slightly pushing the muscle in axial CT scan. In type III, the fracture segments compress and displace the longitudinal axis of the muscle or the optic nerve in axial view of CT scan. Type IV fracture includes multiple fractures found around the orbital apex or optic canal in coronal view of CT scans of the type I and type II fractures. Results: The most common fracture pattern was type I(43.6%), followed by type IV(29.5%), type II(20.5%), and type III(6.4%). As diplopia and restriction of extraocular muscles were found in type I and II fractures, severe ophthalmic complications such as superior orbital fissure syndrome, orbital apex syndrome, and traumatic optic neuropathy were found in type III and IV fractures almost exclusively. Conclusion: We propose an easy classification system of the lateral orbital wall fracture which correlates closely with ophthalmic complications and may help to make further treatment plan. In Type III and IV fractures, severe ophthalmic complications may ensue in higher rates, so early diagnosis and treatment should be performed.

• Journal of Genetic Medicine
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• v.18 no.2
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• pp.83-93
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• 2021

Charcot-Marie-Tooth disease (CMT) is the most common hereditary motor and sensory peripheral neuropathy. CMT is usually classified into two categories based on pathology: demyelinating CMT type 1 (CMT1) and axonal CMT type 2 (CMT2) neuropathy. CMT1 can be distinguished by assessing the median motor nerve conduction velocity as greater than 38 m/s. The main clinical features of axonal CMT2 neuropathy are distal muscle weakness and loss of sensory and areflexia. In addition, they showed unusual clinical features, including delayed development, hearing loss, pyramidal signs, vocal cord paralysis, optic atrophy, and abnormal pupillary reactions. Recently, customized treatments for genetic diseases have been developed, and pregnancy diagnosis can enable the birth of a normal child when the causative gene mutation is found in CMT2. Therefore, accurate diagnosis based on genotype/phenotypic correlations is becoming more important. In this review, we describe the latest findings on the phenotypic characteristics of axonal CMT2 neuropathy. We hope that this review will be useful for clinicians in regard to the diagnosis and treatment of CMT.

• Molecules and Cells
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• v.27 no.6
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• pp.621-627
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• 2009

Spinocerebellar ataxia type 1 (SCA1) is an autosomal-dominant neurodegenerative disorder characterized by ataxia and progressive motor deterioration. SCA1 is associated with an elongated polyglutamine tract in ataxin-1, the SCA1 gene product. As summarized in this review, recent studies have clarified the molecular mechanisms of SCA1 pathogenesis and provided direction for future therapeutic approaches. The nucleus is the subcellular site where misfolded mutant ataxin-1 acts to cause SCA1 disease in the cerebellum. The role of these nuclear aggregates is the subject of intensive study. Additional proteins have been identified, whose conformational alterations occurring through interactions with the polyglutamine tract itself or non-polyglutamine regions in ataxin-1 are the cause of SCA-1 cytotoxicity. Therapeutic hope comes from the observations concerning the reduction of nuclear aggregation and alleviation of the pathogenic phenotype by the application of potent inhibitors and RNA interference.

• Journal of Advanced Marine Engineering and Technology
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• v.22 no.3
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• pp.362-370
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• 1998

Absorption systems require a heat source for working but they have a great merit in that relatively low-temperature and low-quality types of thermal energy such as solar heat and exhaust heat can be effectively utilized as heat source. However details research related to absorbers which have a great effect on performances has been rarely done and thus there has been a strong hope for positive developments to improve their efficiencies. This paper describes absorption experiments made with different inside tube diameters and shapes. The purpose of this study is to acquire basic knowledge about heat and mass transfer in a falling film type absorber with vertical inner tubes. Heat and mass transfer were measured for water vapor absorption into a water/LiBr solution flowing down an absorber of vertical inner tubes. As a result absorption acceleration tube compares bare tube and heat transfer improved by order of insert spring tube corrugated tube grooved tube. And the acceleration that is good provided in inserting spring tube for both sides of heat and mass transfer.

• Journal of Korean Society of Rural Planning
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• v.15 no.2
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• pp.43-57
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• 2009

In aspect of stable housing support policy for the rural returning voluntary which is increasing rapidly, it is necessary to plan the suitable rural house. Therefore this paper aims to propose the suitable rural housing type and the directions of rural house planning. The 4-typical life style is summarized through the 531 cases-life style investigation of existing rural resident and the rural returning voluntary in the whole rural area. Based on the typical life style analysis, the suitable rural housing type and planning directions are proposed. I hope this paper will be a useful guide to make the suitable rural house have planning for our generation.

• Journal of Korea Game Society
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• v.10 no.2
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• pp.21-27
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• 2010

This paper is an analysis of the domestic game users preference for physical interactive game consol-Nintendo Wii. The on-line game is the biggest share in korean game market and the 20's is the laregest generation in domestic game users. We conducted the surveys and group discussion to find out how the 20's game users prefer the new console and new type games. I hope the result of survey will assist the development of new game console and new game type.

• Journal of Cadastre & Land InformatiX
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• v.50 no.1
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• pp.143-162
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• 2020

The purpose of this study is to derive the type by examining and analyzing the integrated cases of the Cadastral System (hereafter as CS.) and the Land Registration System (hereafter as LRS.) except for France, the Netherlands, Japan, and Taiwan introduced in Korea. As a result of the study, it was confirmed that the CS. and LRS. were integrated in Turkey, Indonesia, Hungary, Czech Republic, and Lithuania, and the following three types were drawn as a result of analyzing the integration case. First, the French type, the CS. and LRS. has been integrated since the establishment of the system, and the central and state governments are managed by one Administrative Agency, The basic municipalities include France and Turkey, which are managed by two separate agencies. Second, the Dutch type, there are Netherlands, Indonesia, and Lithuania, which are integrated and managed by one Administrative Agency since the creation of the CS. and LRS. Third, the Japanese type, there are Japan, Taiwan, Hungary, and Czech Republic which was separated from the creation of the CS. and the LRS. and the CS. was managed by the Administrative Agency and the LRS. was managed by the Judicial Agency. but after integrated both systems were managed by one Administrative Agency, Furthermore, CS. was managed by the Administrative Agency in all countries but LRS. was managed by the Judicial Agency in some countries. but after integrated both systems were managed by one Administrative Agency. I hope that active research on the integration of the CS. and LRS. will be carried out in the future, and hope that the results of this study will be used as basic data for research on how to integrate the CS. and LRS. in Korea.