http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Design and Fabrication of Digital Volum Control IC
장영욱,김영생,신명철,Jang, Young Wook,Kim, Young Saeng,Shin, Myung Chul The Institute of Electronics and Information Engin 1986 전자공학회논문지 Vol.23 No.6
This paper describes the design and fabrication of a digital volume control integrated circuit which replaces a mechanical volume control. The integrated circuit can be controlled volume by up/down switch. It has been fabricated by SST bipolar standard process. Its chip size is 2.5x2.5 mm\ulcorner As a result, we succeeded in fabrication of integrated circuit which satisfied DC characteristics and proper operation of volume control.
Supramolecular polymer nanocomposites with self-healing effects
장영욱,( Muhammad Kashif ) 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Self-healing polymers (SHPs) can repair damage (scratches, cracks) on the application of a stimulus, and provide extended application lifetime and reduced maintenance cost. One approach to prepare SHPs is the use of dynamic interactions, which may be supramolecular (hydrogen bonding, ionic interactions, π-π stacking, metal-ligand coordination) or dynamic covalent bonds. These structurally dynamic polymers show rearrangement in their structure in response to a stimulus. The healing process in the polymers is externally stimulated by heat, water or light. In this study, we found that supramolecular hydrogen bonded elastomer, which can be prepared by crosslinking of semicrystalline maleated polyolefin elastomer (mPOE) with 3-amino-1,2,4-triazole (ATA), can exhibit a thermal healing properties. Further, ATA crosslinked elastomer/ octadecylamine modified graphene oxide nanocomposites show the healing effects under near infrared (NIR) irradiation along with enhanced mechanical properties of the elastomer matrix.
Jews and Koreans in the USSR: Patterns after the Dissolution of the Soviet Union
장영욱 전남대학교 글로벌디아스포라연구소 2019 디아스포라 연구 Vol.13 No.2
This paper seeks to find the reasons for the contrast migration behaviours of two remarkably similar ethnic groups, Soviet Jews and Soviet Koreans. Mill’s Method of Difference is adopted to analyse the differences between these two groups. While as many as 600,000 Soviet Jews went to their newly founded national state, Israel, during the post-Soviet transition period, few Soviet Koreans left for Korea which was then equally advanced as Israel in terms of economic growth. After exploring the similar push and pull factors faced by both peoples, three possible explanations for their different repatriation patterns, namely income differentials, migrant network, and repatriation policy, are suggested. Economic concerns did trigger the mass migration of Soviet Jews but given that the Koreans had similar economic benefits of emigration, the role of economic factors may have been limited. A formerly established community of immigrants from the Soviet Union in Israel and the unique repatriation policy represented by the Law of Return and “absorption baskets” appear to have exerted a bigger influence on decisions of prospect migrants. The impact of these two factors is made more convincing because Korea had neither previous migrant stock from the former Soviet Union countries nor the policies to attract their compatriots abroad.
Polyurethane / Clay Nanocomposites 의 제조와 특성에 관한 연구
장영욱,조명운 한국공업화학회 2000 응용화학 Vol.4 No.1
A polyurethane(PU)/clay nanocomposite based on poly(tetramethylene glycol)(PTMG), trifunctional polyisocyanate and montmorillonite was synthesized. It was found that montmorillonite exchanged with long chain opium ions are easily solvated by PTMG. After the polyol dispersed clay was cured with polyisocyanate, tensile modulus and tensile strength as well as the tensile strain was increased. And, the cured film was transparent. The structure/property relationships of these filled polyurethane elastomers were investigated.