• The Transactions of the Korea Information Processing Society
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• v.6 no.3
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• pp.622-632
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• 1999

As the complexity of software development is increasing due to networking, multimedia, and diverse system architecture, the need for effective software development methodology is increasing. Especially, due to software standard and internalization of software market, it is necessary to accept international quality such as ISO 9000-3. In addition, object oriented development methodology is required due to rapid propagation of OO technology and standardization. Recently, UML was accepted by the OMG as standard object-oriented modeling language for distributed environment. When we UML was accepted by the OMG as standard object-oriented modeling language for distributed environment. When we develop Java and CORBA-based software, often UML is applied to Java and CORBA-based projects. However, current structural or OMT-based object-oriented methodologies. In this paper, we proposed UML-based development and concrete guidelines for each phase in order to apply UML to software development practically and effectively. Also, we define the transition guidelines and semantics between various development tasks. In addition, the analysis and design techniques of user interface and system development techniques needed in Web application development are presented.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2807-2808
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• 2003

말초 신경계에서 손상된 신경은 그 손상된 정도에 따라 재생의 정도가 달라진다. 이러한 신경 재생의 정도를 확인할 수 있는 방법으로 초미세 전극 어레이 기술이 연구되고 있는데 이것은 전기신호경로(via hole)를 초미세 전극어레이를 제작하여, 손상된 신경의 근위부(proximal stump)와 원위부(distal stump) 사이에 직접 삽입하여 선경으로부터 재생되어온 신경 섬유의 전기적 전도 선호를 측정 및 기록하는 것이다. 이는 신경 재생을 관찰하는 방법으로서 신경보철(neural prostheses) 기술에 이용된다. 따라서, 본 논문에서는 손상된 신경의 재생을 관찰하기 위한 implantable microelectrode array system을 설계하고, 원 신호인 선경 전도 신호의 특성과 제작된 이식형 초미세전극(implantable microelectrode)의 특성을 고찰하며, 동물 실험을 통하여 그 성능을 검증하였다.

• Resources Recycling
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• v.11 no.3
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• pp.31-36
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• 2002

Magnetic separation was carried out in order to improve the magnetite grade of the spent iron oxide catalyst, that was composed with magnetite, ceria and soluble alkaline salt. The recovery of magnetite from the spent iron oxide catalyst was over 99%, and the magnetite contents was upgraded to about 80% from 70% via wet type magnetic separation at 500 Gauss. This improvement was due to the removal of alkaline salt by water instead of the magnetic separation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.5
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• pp.1159-1165
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• 2007

This study aims to determine the effects of sample movement and storage on sample disturbance. To this end, non-disturbed samples collected from the OOregion, Gwangyang City, Jeonranam-do. Then, unconfined compression and consolidation tests were performed on the samples in the field, Seoul Lab and Seoul Lab after 4 weeks. Based on failure strain rate$(\epsilon_f)$, volume strain rate$(\epsilon_{\nu})$, and void ratio change$({\Delta}e/e_0)$ obtained from the test results, sample disturbance was evaluated. The sample disturbance level was used to compare and analyze the influences of transportation and storage on sample disturbance.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.891-893
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• 2003

This study uses the images from the Corona ‘spy’ satellite, which have been declassified in November 2002 and available on Internet order for a very low cost. The image used dates from 1973 and has about 6m panchromatic characteristics. Along with a Landsat5TM of 1990 and Aster of 2001, a temporal range of about 30 years is achieved. A simple classification of the area was processed and crosschecked manually from the available recent toposheets of Thailand. Results show the development of human infrastructure in the Protected Island of Koh Chang in Thailand, from 1973 to date. Specific human locations are identified linked either to tourism development, or to villages of fishermen. Scope for using Corona in land cover changes on a longer time period than usual satellite images is possible. Some classification issues coming from the sensor have to be taken into account. Accuracy assessment is also an issue because of the age of the sensor.

• Macromolecular Research
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• v.16 no.6
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• pp.532-538
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• 2008

Epoxy-based azopolymers were synthesized by the reaction of the diglycidyl ether of bisphenol A (DGEBA) or N,N-diglycidyl aniline (DGA) with disperse orange 3 (DO3) to give poly(DGEBA-co-DO3) or poly(DGA-co-DO3), respectively. Aniline-based azopolymers prepared from poly(DGA-co-An) precursors, synthesized by the reaction of DGA with aniline, were produced by the post-azo coupling reaction with diazonium salts containing various substituents. Holographic gratings were carried out to measure the diffractive efficiencies (DE) for the interference patterns of the $Ar^+$ laser from 50 to $300\;mW/cm^2$ intensity. The shorter repeating unit with higher chromophore density induced deeper surface relief gratings (SRG). Large surface gratings were observed for the aniline-based azopolymers with -COOH substituents, as compared with those for epoxy-based azopolymers. The aniline-based azopolymers with dimerized chromophores and various substituents were also synthesized to observe the effect of chromophore substituents and dimerization on the holography. The dimerized chromophores were more sensitively photoisomerized by the $Ar^+$ laser beam, and demonstrated a larger grating than that with one azo bond.

• Korean Journal of Materials Research
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• v.16 no.10
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• pp.619-623
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• 2006

Selective vapor deposition of conductive poly(3,4-ethylenedioxythiophene) (PEDOT), thin films has been carried out on self assembled monolayers patterned oxide substrate. Since the 3,4-ethylenedioxythiophene(EDOT) monomer can be polymerized only in the presence of oxidant such as $FeCl_3$, the PEDOT thin film is selectively deposited on patterned $FeCl_3$, which only adsorbs on the partly removed SAMs region due to the inability of $FeCl_3$ to adsorb on SAMs. Therefore, the partly removed SAMs can act as an adsorption layer for the $FeCl_3$ and also as a glue layer for the deposition of PEDOT, resulting in the significantly increased adhesion of PEDOT to $SiO_2$ substrate. The use of UV lithography and Cr patterned quartz mask provided the formation of SAMs patterns on oxide substrates, which allowed for the selective deposition of conductive PEDOT thin films.$^{oo}The$ new process was successfully developed for the selective deposition of PEDOT thin films on SAMs patterned oxide substrate, providing a new way for the patterning of vapor phase deposition of PEDOT thin films with accurate alignment and addressing the inherent adhesion issues between PEDOT and dielectrics.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.23-29
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• 2008

Most VE operation related to construction project is progressed in stage of planing or design phase, especially in case of domestic. It is encouraging fact and if you have VE process in stage of planning and design, you'll have experience a reduction of about 70% of total saving cost in which total construction process may occurred. However, recently the work of construction in overseas increase and almost is only construction-work, except planning and design process. As this reason, VE process for construction-work phase only is demanded in high necessity. VE in construction phase comes to accomplish intensively in the part which the design change does not follow, through know-how, equipment operating method and method of temporary-structure erection at the established construction-site learned, builders will be the possibility of reduction from 3% to 10% in constructive expense. This paper describes VE performing example in OO company's construction-work phase, and propose the methodology of VE performance in the phase of construction. And also it is aimed to extending VE applications into the overseas construction enterprise.

• Journal of the Korea Society of Computer and Information
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• v.6 no.3
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• pp.23-28
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• 2001

There has been several meaning full efforts to save costs on system development and expand the life-time of a system in changeful IT circumstance. It was a module-based architecture that empower productivity at structured programming era. But it couldn't grow nor evolve, but could raise only calling frequency of module. But OOP or OO-method overcome limit of structured programing by class inheritance and/or overloading and/or over-riding. A component centric architecture, what is mixture of distributed systems, like CORBA or DCOM with OOP, can support not only high reusability or expansion of life-time but also Plug-&-Play between them. To assemble these component to build a new system in easy way, the well-formed specification of a component is highly required. At this study, the enhanced referential component architecture and its UML specification will be suggested.

• The Plant Pathology Journal
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• v.34 no.6
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• pp.480-489
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• 2018

Bitter rot caused by Colletotrichum species is a common fruit rotting disease of apple and one of the economically important disease in worldwide. In 2015 and 2016, distinct symptoms of bitter rot disease were observed in apple orchards in five regions of South Korea. In the present study, infected apples from these regions were utilized to obtain eighteen isolates of Colletotrichum spp. These isolates were identified and characterized according to their morphological characteristics and nucleotide sequence data of internal transcribed spacer regions and glyceraldehyde-3-phosphate-dehydrogenase. Molecular analyses suggested that the isolates of Colletotrichum causing the bitter rot disease in South Korea belong to 4 species: C. siamense; C. fructicola; C. fioriniae and C. nymphaeae. C. siamense and C. fructicola belonged to Musae Clade of C. gloeosporioides complex species while C. fioriniae and C. nymphaeae belonged to the Clade 3 and Clade 2 of C. acutatum complex species, respectively. Additionally, we also found that the isolates of C. gloeosporioides species-complex were more aggressive than those in the C. acutatum species complex via pathogenicity tests. Taken together, our results suggest that accurate identification of Colletotrichum spp. within each species complex is required for management of bitter rot disease on apple fruit in South Korea.