Influence of Sodium Hyaluronate Concentration on Corneal Aberrations in Soft Contact Lens Wearers

Jong Soo Lee,Jong Moon Park,Hyun Kyung Cho,Su Jin Kim,Hyoun Do Huh2,Young Min Park 대한안과학회 2018 Korean Journal of Ophthalmology Vol.32 No.2

Purpose: This study aimed to evaluate the influence of varying concentrations of sodium hyaluronate (SH) eye drops on corneal aberrations in normal individuals wearing silicone hydrogel contact lenses. Methods: Normal individuals wearing silicone hydrogel contact lenses were enrolled in this study. Subjects were classified into two groups depending on the concentration of the preservative-free SH used (group 1, 0.1% SH; group 2, 0.3% SH). All subjects were asked to blink five times after instillation of the SH eye drop and before the Galilei measurements. Corneal aberrations were measured over the contact lenses before and after SH eye drop instillation. Visual acuity (VA) over the contact lenses was also measured both before instillation of the SH eye drop and after the subjects completed the five blinks. Results: There was no change in VA after SH instillation in group 1; however, group 2’s VA significantly deteriorated after SH instillation. Changes in VA after SH instillation compared to baseline were significantly higher in group 2 than in group 1. Similarly, the increase in corneal aberrations after SH instillation was significant in group 2 but not significant in group 1. Among the significantly increased corneal aberration parameters, defocus was the main type in group 2. Changes in corneal aberrations after SH instillation compared to baseline were significantly higher in group 2 than in group 1. Conclusions: A 0.3%-concentration of SH increases corneal aberration and decreases VA in soft contact lens wearers. Defocus is the main type of aberration that increased in the 0.3% SH instillation group.

전이성에 관한 연구의 문제점

허종회 한국강원영어영문학회 2000 영어영문학 Vol.19 No.2

In the traditional grammar, we classify the intransitive and transitive verbs by dichotomy in passive sentence. But transitivity is not defined by property of verbs but by the entire situation considering the whole sentence as a unit. And we have many insights about subcategorization and selectional restric-tion in the case grammar. But case grammar limits to the explanation of tran-sitivity by ignoring the discourse-effects and the internal and external effects of sentence such as topic-comment, pronominalization and definiteness. In the transformational approach, in spite of the Burzio's generalization it is difficult to avoid the criticism for circular argument. Furthermore if circumstances require, the notion subject and object can not be used in the rule system. At any rate transitivity changes currently by the cognitive operation and can not formalize syntactically.

예열된 디젤연료의 분무특성에 미치는 영향에 관한 연구

허종철,이규영 제주대학교 1994 논문집 Vol.39 No.-

The correlations between the spray tip penetration and the spray angle were investigated by the direct photographic method under the various conditions of injection pressure, ambient gas pressure and preheated fuel. With the increase of ambient gas pressure, the spray tip penetration was decreased and the spray angle was increased. The transition point in the spray tip penetration was observed at the higher ambient gas pressures and strongly depended upon the fuel temperature. The spray angles in the case of preheated fuel were larger than those of non-preheated fuel conditions. Particularly, the spray angle at ambient gas pressure of 1.5 and 3MPa was sharply increased due to the result of change of fuel properties, but the spray tip penetration was decreased. The initial stage of fuel spray showed the form of non-disintegrated intact core, but the formation of ligament increasingly was developed with the increase of th fuel temperature.

Loader/Unloader의 고속화에 관한 연구

허성관,권용규,최종탁 大邱大學校 科學技術硏究所 2000 科學技術硏究 Vol.7 No.2

In the recent loader & unloader, left controller has problems such as functional error caused by vibration when speed up and discordance of speed between another machine in line. On this study, a newly designed loader & unloader has been selected motor viewed in torque, revolutions per minute (RPM). rating and output of power, programmable logic controller(P. L. C) viewed in economy, convenience and manageme -nt. By using optimum inverter, it can be avoided from occurrence of high frequence and motor damage in these equipments. By establishing distributed control system(D. C. S), it can control input, output and production units, can contribute factory automation system in PCB manufacture.

품질 인증이 기업에 미치는 효과 분석

허성관,권오섭,최종탁,박동은 대구대학교 과학기술연구소 2001 科學技術硏究 Vol.8 No.2

In this paper, we study the effect analysis on the quality certification of ISO 9000 in a company. For this study, the correct understanding of management level, the effect of certification requisition, and the improvement effects of some problems happen to the company are studied, before and after introducing the quality management system of ISO 9000. To analyze the various effects of the quality management system of ISO 9000, some companies certificated by the ISO 9" are surveyed and analyzed. The aim of this study is to provide some information to a company that want to introduce the quality management system of ISO 9000.

쿠폰유형 및 조절적 동기가 쿠폰이용의도에 미치는 효과

허종호 한국방송광고공사 2007 광고연구 Vol.0 No.74

본 연구에서는 쿠폰유형을 크게 즉각보상형 쿠폰(instant compensation coupon)과 지연보상형 쿠폰(delayed compensation coupon) 두 가지로 분류하여 쿠폰유형에 따라 소비자의 쿠폰이용의도가 어떤 차이가 있는지, 그리고 이러한 차이가 조절적 동기(regulatory focus)에 따라 어떻게 달라지는지 살펴보았다. 이를 위해 2(쿠폰유형: 즉각 보상형 쿠폰 vs. 지연보상형 쿠폰) X 2(조절적 동기: 향상동기 vs. 예방동기) 피험자 집단간 실험설계를 적용하였다. 분석결과, 지연보상형 쿠폰보다 즉각보상형 쿠폰의 이용의도가 더욱 높은 것으로 나타났다. 또한, 쿠폰유형과 조절적 동기간에 유의한 상호작용효과가 있음을 밝혀냈다. 즉, 쿠폰유형(즉각보상형 쿠폰 vs. 지연보상형 쿠폰)에 따른 쿠폰이용의도의 차이는 향상동기 지향적 소비자에 비해 예방동기 지향적 소비자일 경우 더욱 커지는 것으로 나타났다. The present research investigates the effects of the type of coupon and regulatory focus on consumers’ coupon usage intention. Specifically, based on the results from 2(type of coupon: instant compensation coupon vs. delayed compensation coupon)×2(regulatory focus: promotion motivation vs. prevention motivation) between-subjects factorial design experiments, we find that consumers’ usage intention of instant compensation coupon are greater than delayed compensation coupon. In addition, the results show that there is a significant interaction effect between the type of coupon and regulatory focus. That is, the differential effects of the type of coupon on coupon usage intention are greater when consumer had prevention motivation than promotion motivation.

바코드 자동부착 시스템을 이용한 생산정보의 효율적인 관리

허성관,박종락,임승환,정종태 대한설비관리학회 2004 대한설비관리학회지 Vol.9 No.1

On this thesis, We studied on effective management of manufacturing information using auto bar code attachment system. Nowdays, Management Information System is essential factor to manage a company. This paper used bar code system to obtain data and dealing with data. And, In this paper, We proposed the method of development about auto bar code label attachment system for manufacturing process. we show the way of stepping motor control, bar code printer and

숙근메밀과 그 근연종의 전기영동을 이용한 Isozymes 및 Protein Patterns 분석에 관한 연구

허홍욱,김종희,허만규 부산대학교 사범대학 1991 교사교육연구 Vol.22 No.-

In the genus Fagopyrum, four isozymes have been used in the analysis of allozyme variation by the method of starch gel electrophoresis. Additionally, protein patterns were investigated by the method of SDS-polyacrylamide gel electrophoresis. 1. The assayed results by the method of starch gel electrophoresis: Alcohol dehydrogenase(ADH) showed a band with strong activity in the anodal side. ADH was appeared almost monomorphic. Malate dehydrogenase(MDH), which might be controlled of five or more loci, was very complicated band patterns. The populations of F. cymosum and F. tataricum were appearently monomorphism. But F. esculentum(common buckwheat) was shown polymorphism, and the frequency of fast allele was 22.3% on the average. The 831 seeds examined for 6-phosphogluconate dehydrogenase (6-PGDH) were almost monomorphic. Phosphoglucomutase(PGM) was shown polymorphic at two loci. Each frequency of fast and slow alleles in PGM-2 locus was 22.1% and 1.2% at the F. cymosum.

함의에 함축에 대한 연구

許鐘會 尙志大學校 1989 論文集 Vol.10 No.-

In this paper I have studied that the semantic aspect of the so-called presupposition is so complex that they can not be explained in a uniform phenomenon. Therefore, presupposition must be divided into the semantic and pragmatic aspect and explained with such two aspects. Also, we have known that the notion of semantic entailment rather than semantic presupposition is adequate in the explanation to the presupposition. Meanwhile, in the pragmatic aspect, presupposition depends upon the discourse contexts and must be explained with the notion of implication. According to Karttunen and Peter this notion is equivalent for the conversational implicature. And in the complex sentenses, the entire presupposition is influenced by the semantic feature of the sentences. then we have seen that felicity condition and conversational maxims are required to the explanation of the complex sentences. Finally, implication can be divided into the conversational and conventional one. Then presupposition must be decomposed into entailment implicature. Here, conventional implicature is absorbed in the notion of entailment and implicature is just word for the conversational one. As a result, so-called presupposition must be decomposed into two parts which can be explained in the semantics and pragmetics. Then the semantic aspect including the conventional implicature which can be solved by truth condition must be explained by entailment. And conversational implicature must be explained by pragmatics.

제조물책임법 시행에 따른 건설업체 대응방안

허성관,박동은,정종태 대구대학교 산업기술연구소 2003 産業技術硏究 Vol.15 No.1

PL(product liability) was put in forced in July 2002 to protect Consumer's light and to ensure manufacturer's liability. Product can be defined as manufactured or processed movable properties which are the component of estates and movable properties. PL laws was effect on processed movable properties but estate is exception to the rule. It means that the defect of building and land is exceptions to the rule. But, construction is composed of many continuous elements and it can be contained defective parts, which was caused consumer's damages. In this case, conflicts between consumer and constructor are inevitable. Business reliability will be damaged for construction delay and inevitable conflict.