• Proceedings of the Korea Society for Industrial Systems Conference
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• 2000.11a
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• pp.695-702
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• 2000

OTS(Operator Training Simulator) 소프트웨어는 원자력발전소, 화력발전소 또는 화학공장 등과 같은 플랜트의 동적 특성을 실제의 플랜트와 같게 컴퓨터 환경을 이용하여 모의하는 기능을 수행한다. OTS 소프트웨어는 개발 규모가 방대하고 개발에 소요되는 시간과 비용부담이 큰 특징을 갖는다. 또한 플랜트 공정제어와 감시에 대한 전문지식이 요구된다. 따라서 OTS 소프트웨어 개발은 정부투자기관이나 연구기관의 자체인력을 활용하여 개발되어 왔다. 그러나, 최근에는 아웃소싱이 보편화됨에 따라 OTS 소프트웨어 개발 또한 외주개발 형태를 띄게 되었다. OTS 소프트웨어 외주개발은 소프트웨어 개발회사들에게 동등한 기회를 부여하기 위하여 일반적으로 2 단계 공개경쟁 형태로 프로젝트가 수행된다. 즉, 기술규격경쟁과 가격경쟁의 결과에 따라 외주개발 회사가 선정된다. 국내 소프트웨어 개발회사들의 경우에 OTS 소프트웨어 개발경험이 적으므로 OTS 소프트웨어 개발 프로젝트 수주를 위한 첫 번째 장벽은 발주자의 제안요청서에 합당하는 기술 제안서를 작성하여 OTS 소프트웨어를 개발할 수 있는 기술적 사업적 능력이 충분함을 입증하는 일이다 본 연구에서는 OTS의 유형과 특징, 프로젝트의 기술제안서 평가요소를 고찰하고 OTS 소프트웨어 개발에 참여하려 고 개발회사가 제안서를 작성 제출할 경우에 기술규격 경쟁에서 우위를 점할 수 있는 기술제안서 작성방안을 토의한다.

• Journal of the Korean Vacuum Society
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• v.15 no.4
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• pp.354-359
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• 2006

Recently, the interest in lithography without photo exposure has been increased compare to the conventional photolithography in nano meter and micrometer size patterning area. We studied a self aligned dipping of Ag solution through micro contact printing (${\mu}-CP$) with octadecyltrichlorosilane (OTS) treated polydimethylsiloxane (PDMS) soft mold. The OTS monolayer on the patterned PDMS was formed by dipping it into OTS solution. We transferred the OTS monolayer from PDMS mold to the glass. The OTS monolayer changed the surface energy from hydrophilic surface to hydrophobic surface, And then we made self aligned Ag solution patterns just after dipping the substrate, using adhesion difference of Ag solution between OTS treated hydrophobic area and non-OTS treated hydrophilic area. We finally get the Ag patterns through only dip-coating after the ${\mu}-CP$ process. And we observed surface energies on the glass substrate through the contact angle measurements as time goes on.

• Transactions of the Korean Society of Automotive Engineers
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• v.13 no.6
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• pp.99-104
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• 2005

The CARB in USA has demanded OBD functions that detect any deterioration of performance of OTS as well as a simple defect of OTS which can affect emission to meet the reinforced emission regulation. In this paper, OTS plausibility monitoring functions to meet the demand from CARB are discussed. The output from OTS is used for the diagnostics of the torque converter clutch stuck and the gear ratio synchronous error. It is possible to diagnose the abnormality of OTS function by considering the oil temperature characteristics which changes according to the driving status of vehicles. In result, the OBD regulations of the CARB can be satisfied obligating car manufacturer to detect any problems in OTS functions which can affect emissions.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2000.11a
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• pp.341-346
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• 2000

The effect of OTS(octadecyltrichlorosilane) SAM(self-assembled monolayer) on the micro-adhesion has been studied. OTS SAM was formed on the Si(100) surface and SPM (scanning probe microscope) tips with different radius of curvature were fabricated by a series of masking and etching processes. Pull-off forces of different tips on Si and OTS SAM surfaces were measured by SPM in different relative humidities. The surface of OTS SAM was changed to hydrophobic surface and the micro-adhesion force of OTS SAM was lower than that of pure Si. As the tip radius of curvature and the relative humidity increased. the micro-adhesion force increased. Based on the test results. the main parameter affected to the micro-adhesion was absorbed humidity on the surface.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.8 no.1
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• pp.37-44
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• 2015

In this paper, we have investigated a selective assembly method of single-walled carbon nanotubes (SWCNTs) on a silicon substrate using only photolithographic process and then proposed a fabrication method of field effect transistors (FETs) using SWCNT-based patterns. The aminopropylethoxysilane (APTES) patterns, which are formed for positively charged surface molecular patterns, are utilized to assemble and align millions of SWCNTs and we can more effectively assemble on a silicon (Si) surface using this method than assembly processes using only the 1-octadecyltrichlorosilane (OTS). We investigated a selective assembly method of SWCNTs on a Si surface using surface-programmed APTES and OTS patterns and then a fabrication method of FETs. photoresist(PR) patterns were made using photolithographic process on the silicon dioxide (SiO2) grown Si substrate and the substrate was placed in the OTS solution (1:500 v/v in anhydrous hexane) to cover the bare SiO2 regions. After removing the PR, the substrate was placed in APTES solution to backfill the remaining SiO2 area. This surface-programmed substrate was placed into a SWCNT solution dispersed in dichlorobenzene. SWCNTs were attracted toward the positively charged molecular regions, and aligned along the APTES patterns. On the contrary, SWCNT were not assembled on the OTS patterns. In this process, positively charged surface molecular patterns are utilized to direct the assembly of negatively charged SWCNT on SiO2. As a result, the selectively assembled SWCNT channels can be obtained between two electrodes(source and drain electrodes). Finally, we can successfully fabricate SWCNT-based multi-channel FETs by using our self-assembled monolayer method.

• The Journal of Korean Academy of Sensory Integration
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• v.10 no.1
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• pp.33-44
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• 2012

Objective : The aim of the study was to investigate the job satisfaction of occupational therapists(OTs) who work in sensory integration treatment setting, and to analysis for factors influencing the satisfaction. Methods : Data were obtained from 62 OTs who had registered Korean Academy of sensory integration through a survey. Results 1 : Job satisfaction according to general characters: OTs who were above 35 years old and take the treatment course for sensory integration felt the highest total job satisfaction. OTs who are above 35 years old and have clinical experience under 12 month felt the highest salary satisfaction. OTs who are under 25 years old felt the highest promotion satisfaction. Female OTs felt higher colleagues relationship satisfaction than male OTs. 2. Job satisfaction according to work environment: OTs who work with 5 to 10 colleagues and work at private clinic felt the highest total job satisfaction. OTs who spend time treating patients more than 45 hours per week and work at private clinic. OTs who work with 5 to 10 colleagues felt the highest promotion and institute satisfaction. OTs who work at the disabled children care center considered change their job more than others. Conclusions : To improve job satisfaction of OTs, we need to consider size of organization, type of institutes. And we have to define role and specialty of OTs who work in various sensory integration treatment setting.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.06a
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• pp.238-239
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• 2006

본 논문은 게이트 절연막에 OTS(n-octadecy trichlorosilance) 혼합용액을 이용하여 SAMs(Self-Assembled Monolayers)막을 형성하였다. OTS 혼합용액은 OTS를 0.1w%와 0.5w% 각각을 클로로포름 30w%와 헥산 70w%에 혼합하여 만들었다. 이 혼합용액을 게이트 절연막위에 표면처리하였다. 활성층인 Pentacene이 게이트 절연막 위에 증착될 때, OTS 혼합용액의 비에 따라 누설전류특성을 보았다. OTS를 0.1w% 처리한것이 0.5w%보다 누설전류가 더 작게 나타났다. 결과적으로 OTFT의 게이트 절연막의 절열특성은 향상시키는데 OTS 혼합용액의 비가 큰 영향을 준다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.06a
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• pp.169-170
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• 2007

기존 사용되어온 절연막인 $SiO_2$ 의 절연특성이 신호의 간섭 등의 문제가 있어서 절연특성을 좋게 하기 위해 낮은 유전상수와 비결정질의 절연막을 요구하고 있다. 본 연구에서는 혼합된 OTS solution으로 처리된 $SiO_2$ 절연막이 OTS 함유량 증가에 따른 전기적인 특성을 조사하였다. 전압-전류 특성 곡선에 의한 누설전류 증가랑이 OTS 함유량 증가에 따라 비례적으로 증가하지 않았으며 0.7% 처리 농도에서 누설전류가 가장 적게 나타났다.

• The Plant Pathology Journal
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• v.37 no.6
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• pp.566-579
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• 2021

Ralstonia syzygii subsp. indonesiensis (Rsi, former name: Ralstonia solanacearum phylotype IV) PW1001, a causal agent of potato wilt disease, induces hypersensitive response (HR) on its non-host eggplant (Solanum melongena cv. Senryo-nigou). The disaccharide trehalose is involved in abiotic and biotic stress tolerance in many organisms. We found that trehalose is required for eliciting HR on eggplant by plant pathogen Rsi PW1001. In R. solanacearum, it is known that the OtsA/OtsB pathway is the dominant trehalose synthesis pathway, and otsA and otsB encode trehalose-6-phosphate (T6P) synthase and T6P phosphatase, respectively. We generated otsA and otsB mutant strains and found that these mutant strains reduced the bacterial trehalose concentration and HR induction on eggplant leaves compared to wild-type. Trehalose functions intracellularly in Rsi PW1001 because addition of exogenous trehalose did not affect the HR level and ion leakage. Requirement of trehalose in HR induction is not common in R. solanacearum species complex because mutation of otsA in Ralstonia pseudosolanacearum (former name: Ralstonia solanacearum phylotype I) RS1002 did not affect HR on the leaves of its non-host tobacco and wild eggplant Solanum torvum. Further, we also found that each otsA and otsB mutant had reduced ability to grow in a medium containing NaCl and sucrose, indicating that trehalose also has an important role in osmotic stress tolerance.

• Journal of the Korean Vacuum Society
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• v.17 no.5
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• pp.394-399
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• 2008

Growth and electronic structure of pentacene film on silicon oxide before and after octadecyltrichlorosilane (OTS) treatment have been studied by photoelectron spectroscopy and photoelectron emission microscopy. On the OTS-treated surface, due to the weak interaction between the substrate and pentacene, the diffusion of pentacene is enhanced and domain size gradually grows, leading to a gradual change of the HOMO offset position. On the bare silicon oxide, the change of the HOMO position is marginal because of relatively strong interaction between the substrate and pentacene from the beginning.