• 한국컴퓨터정보학회논문지
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• 제18권9호
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• pp.201-208
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• 2013

본 연구는 기업체에서 직원 내부고객이 지각하는 기업의 중간재경쟁력 및 기업의 핵심역량과 내부고객가치 및 기업성과의 관계를 밝혀내고자 하는 데 목적이 있다. 또한 문화적 환경적 차이가 있는 한국과 중국의 전자기업 내부고객을 대상으로 각각 표본을 선정하여 각국 내부고객들의 고객가치와 기업성과 간의 차이를 검정하고자 한다. 이러한 연구의 목적을 달성하기 위하여 본 연구는 한 중 간 차이 비교연구와 연구모형의 검정으로 나누어 각각의 연구목적에 맞게 연구를 진행한다. 한 중 간 차이 비교연구는 한국과 중국 내부직원들의 기업 중간재경쟁력과 기업의 핵심역량에 대한 지각 차이를 검정한다. 또한 제품의 혁신성과 제품의 신뢰성이 고객가치에 미치는 영향에 관한 차이 검정을 실시한다. 그리고 한국과 중국 내부직원들의 기업의 제품에 대한 지각 차이 검정을 진행한다. 그리고 연구모형의 검정에서는 한국과 중국의 내부직원들이 느끼는 가치와 기업성과에 대한 관계의 점정을 통해 연구를 진행한다.

• Bulletin of the Korean Chemical Society
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• 제19권6호
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• pp.686-689
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• 1998

Irradiation of 1-(o-allyloxyphenyl)-2-pentamethyldisilanylethyne (2) in methanol yields two 1 : 1 photoaddition products (3 and 4) via silacyclopropene intermediate. Photolysis of (2) with acetone in deaerated methylene chloride yields site specific and regioselective 1: 1 adducts (7 and 8) via silacyclopropene and 1-sila-1,2-propadiene intermediate, respectively.

• 소성∙가공
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• 제24권5호
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• pp.340-347
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• 2015

Multi-pass shape drawing is used to manufacture long products of arbitrary cross-sectional shapes. This process allows smooth surface finishes and closely controlled dimensions of the cross-sectional shape. Tube shape drawing for hollow type products provides material savings and weight reduction. The intermediate die shapes are very important in multi-pass tube shape drawing. In the current paper, the design method for the intermediate dies in a tube shape drawing process is developed using a die offset for corner filling (DOCF) method. Underfill defects are related to the radial velocity distribution of each divided section in the deformation zone. The developed intermediate die shape design was applied to the two-pass tube shape drawing with fixed mandrel for manufacturing a hollow linear motion (LM) guide rail. The proposed design method led to uniform and steady metal flow at each divided section. FE-simulations and experiments were conducted to validate the effectiveness of the proposed method in multi-pass tube shape drawing process.

• 상하수도학회지
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• 제34권1호
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• pp.61-73
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• 2020

Tetracycline is one of the most commonly used antibiotics in domestic and foreign livestock industries to suppress the growth of pathogens. Tetracycline has been reported as a non-biodegradable compound. Therefore it has been not completely removed in the sewage treatment process. In this study, tetracycline was degraded using liquid ferrate (VI). Based on these experiments, the optimal water condition (pH and water temperature) were selected, appropriate liquid ferrate (VI) dosage was calculated, and finally the degradation pathway was estimated with the intermediate products detected by LC/MS/MS. All degradation experiments were completed within 30 seconds and the optimal condition was obtained in basic condition (pH 10) at room temperature (20℃). And the appropriate molar ratio between tetracycline and liquid ferrate (VI) was 12.5:1. Finally, 12 intermediate products were detected with LC/MS/MS and the degradation pathways and the degradation pathways and proposed the degradation pathways.

• Journal of Photoscience
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• 제6권2호
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• pp.57-60
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• 1999

The reaction of [1.1.1]propellane with singlet methylene afforded 1,3-dimethylenecyclobutane and [l.1.1.1]paddlane (3). Various minor products were also produced. The reaction of [1.1.1]propellane with triplet methylene afforded 1,3-dimethylenecyclobutane (2) and various minor products. But even trace of [1.1.1.1]paddlane was not detected. The mechanism for the addition of singlet methylene involved [1.1.1.1]paddlane intermediate The addition of triplet methylene led to diradical intermediate. In order to reveal the reaction pathway for generation of various ruiner products, various studies were carried out under the same condition.

• 한국컴퓨터정보학회논문지
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• 제19권4호
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• pp.131-138
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• 2014

본 연구는 기업의 중간재경쟁력 및 기업의 핵심역량과 내부고객가치 및 기업성과의 관계를 밝혀내고자 하는 데 목적이 있다. 연구모형의 검정에서는 양국 조직구성원들이 느끼는 고객가치와 기업성과에 대한 관계를 파악하고자 한다. 연구의 결과를 요약하면 다음과 같다. 한국 기업집단의 경우는, 중간재경쟁력은 제품의 신뢰성과 제품의 혁신성에 유의한 영향을 미치고, 핵심역량은 제품의 신뢰성과 제품의 혁신성에 유의한 영향을 미치는 것으로 나타났다. 제품의 신뢰성은 고객가치에 유의한 영향을 미치고, 고객가치는 기업의 성과에 유의한 영향이 있다. 그러나 제품의 혁신성은 고객가치에 유의하지 않은 영향이 나타났다. 한편 중국 기업집단에서 중간재경쟁력은 제품의 신뢰성, 제품의 혁신성에 유의한 영향을 나타냈다. 또한 핵심역량은 제품의 혁신성에 유의한 영향을 나타냈지만 제품의 신뢰성에 유의하지 않은 영향이 나타났다. 그리고 제품의 신뢰성은 고객가치에 유의하지 않은 영향이 있지만, 제품의 혁신성은 고객가치에 유의한 영향을 나타냈다. 마지막으로 고객가치는 기업성과에 유의한 영향을 미치는 것으로 나타났다.

• 무역학회지
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• 제46권4호
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• pp.205-217
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• 2021

This paper examines the effects of intellectual property protection policies on upstream firms' R&D investments in order to derive policy implications in relation to the fostering of the intermediate goods industry. To that end, the dependence on import of intermediate goods and the degree of protection of intellectual property rights are introduced into the model to analyze the effects of R&D investments on the dependence on imports and the effects of intellectual property rights protection policies on the level of R&D investments in order and the social welfare effects are also checked. The policy implications derived in this paper, which used an oligopolistic market model with a vertical specialization structure, are as follows. As R&D investments expand, upstream firm begins to have price competitiveness, the dependence on import of intermediate goods by downstream firm decreases, and social welfare increases. That is, in order to strengthen the independence of the intermediate goods industry, R&D investments by upstream firm should be expanded, and to promote this, the government should strengthen the protection of intellectual property rights.

• Journal of Applied Biological Chemistry
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• 제61권4호
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• pp.335-340
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• 2018

Hemoglobin (Hb) is a member of heme-protein that can perform catalytic non-specific chain reaction in the presence of hydrogen peroxide ($H_2O_2$). Catalytic ability of Hb to degrade pyrene was demonstrated using soil contaminated with $^{14}C$ pyrene and 10 mg pyrene /kg soil. The composition of soil was similar to previously used soil except that it had lower organic carbon content. Bench scale laboratory tests were conducted in the presence of buffer only, $H_2O_2$ only, or Hb with $H_2O_2$ for 24 h. After 24 h reaction, 0.1 and 1.3% of $^{14}C$ pyrene in contaminated soil were mineralized with $H_2O_2$ only or Hb plus $H_2O_2$. No mineralization to $^{14}CO_2$ was detected with buffer only. Approximately 12.2% of pyrene was degraded in the presence of $H_2O_2$ only while 44.0% of pyrene was degraded in the presence of Hb plus $H_2O_2$ during 24 h of catalytic reaction. When degradation intermediate products were examined, two chemicals were observed in the presence of $H_2O_2$ only while 25 chemicals were found in the presence of Hb plus $H_2O_2$. While most degradation products were simple hydrocarbons, four of the 27 chemicals had aromatic rings. However, none of these four chemicals was structurally related to pyrene. These results suggest that Hb catalytic system could be used to treat pyrene-contaminated soil as an efficient and speedy remediation technology. In addition, intermediate products generated by this system are not greatly affected by composition change in soil organic matter content.

• 영어어문교육
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• 제13권4호
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• pp.59-85
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• 2007

This study examined patterns of engaging in "reading in connection to writing" (hereafter reading-writing practices) in the context of two ESL college composition classrooms. The purpose of this study was to explore whether the L2 proficiency level could be a key construct in explaining similarities and differences in reading-writing practices which students engaged in during the composing process. Multiple sources of data collected over the semester included interview protocols, written products, and observational notes. The results showed that the three proficiency groups under examination differed widely in the ways reading was connected to writing and in the types of intermediate texts produced during the composing process. The students in the high proficiency group produced more intermediate texts through an engagement in reading-writing practices connected to each other. On the contrary, the students in lower proficiency groups engaged in a limited range of reading-writing practices without support of intermediate texts. This study provides insight into the different ways ESL college students coordinate reading and writing while composing essays.

• 소성∙가공
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• 제19권2호
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• pp.132-137
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• 2010

In the multi-pass shape drawing process, the appropriate process design is very important to produce sound products. The reduction ratio, die angle, and the intermediate die shape are very important process variable of the multi-pass shape drawing. The aim of this study is the determination of the reduction ratio, die angle, and the intermediate die shape of the 2 pass shape drawing process for producing steering spline shaft. In this study, FE analysis, Taguchi method, and ANN(artificial neural network) were applied to determine the appropriate reduction ratio, die angle, and intermediate die shape. After the determination of the process variables, FE analysis and drawing experiment were performed to evaluate the effectiveness of the determined process variables. The dimensional accuracy of the final drawn spline shaft was evaluated by using 3D surface profiler and 3D laser digitizing system.