• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.587-589
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• 2009

The mode (reflective and transmissive) switchable LCD has been developed by using a treated SR (Selective Reflector) polarizer. We believe that our approach will be a solution to overcome weak points for a reflective and transflective mode in a dark environment and a transmissive mode in a bright environment. Therefore, this can minimize power consumption, and also be easily fabricated in a current manufacturing process, ready for large sizes.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.5
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• pp.1043-1048
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• 2013

Authorities of the major industrialized countries infer that technological advances have a greater contribution to economic growth compared to traditional factors of production such as labor and capital and are actively pursuing investment in research and development. We have examined quantitatively the effect of R & D investment on exports in the IT sector in this study. Based on that results, how much of R & D investment in the IT sector should be made in order to reach trade surplus of two trillion dollars, which Korea government has aimed in 2020, is also to be analyzed.

• Asia pacific journal of information systems
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• v.25 no.1
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• pp.61-81
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• 2015

Investment in research and development (R&D) is critical in the information technology (IT) firms, where newer and better technology is a quintessential goal that directly affects innovation and competitive advantage. This study investigates how R&D investment influences firm performance and value, and how the effect of R&D investment differs between IT hardware and software firms. We also analyze the relationship between firm age and R&D investment in order to identify learning effects on continuous R&D investment. The empirical investigation in this study, based on longitudinal archival data from 2001 to 2010, found a significant effect of R&D investment on firm performance in IT firms. Further, this study demonstrates causal relationship between firm age, and verifies that learning effects are present in R&D investment. Moreover, the results are found to differ between IT hardware and IT software firms.

• STI Policy Review
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• v.2 no.1
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• pp.35-53
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• 2011

This paper originates from the questions concerning why Korea has had difficulties in boosting R&D service industries regardless of government efforts over a decade. We first review the intrinsic nature of the R&D services and set up four criteria such as establishment type, diversification of business models, coverage of client firms, and role of R&D service firms as innovation drivers and IP strategies, that will be used in interviewing and analyzing R&D service firms. Second, we carry out in-depth interviews of eighteen R&D service firms to understand business behaviors and relevant characteristics. Finally, we identify five groups of R&D service firms and conclude that differentiated polices have to be implemented according to the groups for promoting the industry effectively.

• Archives of Pharmacal Research
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• v.22 no.2
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• pp.202-207
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• 1999

New series of catechol ether type derivatives 5, 6 have been synthesized and applied to biological tests. Even though it is ap preliminary data, some of our target molecules show the promising result against PDE IV inhibition. SAR and biological studies with studies with synthetic compounds will be discussed in detail.

• Proceedings of the Korean Society of Crop Science Conference
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• 2019.09a
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• pp.158-158
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• 2019

• Journal of Ocean Engineering and Technology
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• v.34 no.6
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• pp.461-468
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• 2020

This study examined how national research and development (R&D) in the domain of logistics has changed recently in the Republic of Korea. We conducted basic statistical analysis and social network analysis on 5,327 logistics-related R&D projects undertaken during 2005-2019. Data for performing these analyses were collected from the R&D database of the National Science and Technology Information Service (NTIS). By constructing a co-occurrence matrix with keywords, we conducted degree and betweenness centrality analysis and visualized the network matrix to display a cluster map. This study presents our observations related to the following findings: (1) the chronical trends of logistics R&D, (2) focused fields of logistics R&D, (3) the relations among keywords, and (4) the characteristics of logistics R&D. Finally, we suggest policy implications to boost and diversify logistics R&D.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.243.2-244
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• 2003

Purpose: This study evaluated gender differences and extents of accumulation on chronic dose of CJ-1l555 using rats. Method: 0, 10, 50 and 200 mg/kg/day of CJ-11555 (0.5% CMC) were orally administered to rats for 28 days and observed toxicokinetic parameters. Plasma concentrations were analyzed by LC-MS/MS Result: Exposure to CJ-11555 increased with the increase in dose level for both sexes. Mean concentrations at 10 and 50 mg/kg/day were generally similar an Days 1 and 28, but were generally highter on Day 28 than on Day 1 at 200 mg/kg/day. (omitted)

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.241.1-241.1
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• 2003

Purpose: The objective of the study was to elucidate the pharmacokinetics of CJ-11555, anti-cirrhotic agent, in different physical properties and vehicles. Methods: 8-week-old male intact rats were administered CJ-11555 either intravenously (20 mg/0.6 mL/kg, NMP:PEG400, 1:1) or orally (50 mg/2 mL/kg, various vehicles). Different particle sizes of CJ-11668 and various vehicles were applied to characterize CJ-11555 in vivo. Following the administration in rats, the plasma concentrations were determined by HPLC. (omitted)

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.10a
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• pp.175-175
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• 2021