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Search Results: 1 - 10 of 61306 matches for " Young Jun Kim "
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Carbon Nanotube-Reinforced Thermotropic Liquid Crystal Polymer Nanocomposites
Jun Young Kim
Materials , 2009, DOI: 10.3390/ma2041955
Abstract: This paper focuses on the fabrication via simple melt blending of thermotropic liquid crystal polyester (TLCP) nanocomposites reinforced with a very small quantity of modified carbon nanotube (CNT) and the unique effects of the modified CNT on the physical properties of the nanocomposites. The thermal, mechanical, and rheological properties of modified CNT-reinforced TLCP nanocomposites are highly dependent on the uniform dispersion of CNT and the interactions between the CNT and TLCP, which can be enhanced by chemical modification of the CNT, providing a design guide of CNTreinforced TLCP nanocomposites with great potential for industrial uses.
Surface-Modified Membrane as A Separator for Lithium-Ion Polymer Battery
Jun Young Kim,Dae Young Lim
Energies , 2010, DOI: 10.3390/en3040866
Abstract: This paper describes the fabrication of novel modified polyethylene (PE) membranes using plasma technology to create high-performance and cost-effective separator membranes for practical applications in lithium-ion polymer batteries. The modified PE membrane via plasma modification process plays a critical role in improving wettability and electrolyte retention, interfacial adhesion between separators and electrodes, and cycle performance of lithium-ion polymer batteries. This paper suggests that the performance of lithium-ion polymer batteries can be greatly enhanced by the plasma modification of commercial separators with proper functional materials for targeted application.
The Usefulness of Patent Stage and Sectoral Pattern in Open Innovation Licensing
Jun Young Kim,Yongtae Park
Journal of technology management & innovation , 2008,
Abstract: The relative importance to the particular industry of licensing has not been done enough empirically to pursue the route of the open innovation. That is why the industrial level research on open innovation is more complicated than that of company level. This paper tries to survey industrial level licensing by combining the technology regime theory with NTB(National Technology Bank) score model of KTTC(Korea Technology Transfer Center) and tries to transform Likert score into general value proxy by using information of valuator’s organizations. This paper also introduces two new factors named as ‘patent authorization stage’ for classifying patent status and ‘technology regime based industrial innovation pattern’ for adopting sectoral level research in order to overcome drawbacks of score model in case of application to open innovation licensing.
The Usefulness of Patent Stage and Sectoral Pattern in Open Innovation Licensing The Usefulness of Patent Stage and Sectoral Pattern in Open Innovation Licensing The Usefulness of Patent Stage and Sectoral Pattern in Open Innovation Licensing
Jun Young Kim,Yongtae Park
Journal of technology management & innovation , 2009,
Abstract: The relative importance to the particular industry of licensing has not been done enough empirically to pursue the route of the open innovation. That is why the industrial level research on open innovation is more complicated than that of company level. This paper tries to survey industrial level licensing by combining the technology regime theory with NTB(National Technology Bank) score model of KTTC(Korea Technology Transfer Center) and tries to transform Likert score into general value proxy by using information of valuator’s organizations. This paper also introduces two new factors named as ‘patent authorization stage’ for classifying patent status and ‘technology regime based industrial innovation pattern’ for adopting sectoral level research in order to overcome drawbacks of score model in case of application to open innovation licensing. The relative importance to the particular industry of licensing has not been done enough empirically to pursue the route of the open innovation. That is why the industrial level research on open innovation is more complicated than that of company level. This paper tries to survey industrial level licensing by combining the technology regime theory with NTB(National Technology Bank) score model of KTTC(Korea Technology Transfer Center) and tries to transform Likert score into general value proxy by using information of valuator’s organizations. This paper also introduces two new factors named as ‘patent authorization stage’ for classifying patent status and ‘technology regime based industrial innovation pattern’ for adopting sectoral level research in order to overcome drawbacks of score model in case of application to open innovation licensing. The relative importance to the particular industry of licensing has not been done enough empirically to pursue the route of the open innovation. That is why the industrial level research on open innovation is more complicated than that of company level. This paper tries to survey industrial level licensing by combining the technology regime theory with NTB(National Technology Bank) score model of KTTC(Korea Technology Transfer Center) and tries to transform Likert score into general value proxy by using information of valuator’s organizations. This paper also introduces two new factors named as ‘patent authorization stage’ for classifying patent status and ‘technology regime based industrial innovation pattern’ for adopting sectoral level research in order to overcome drawbacks of score model in case of application to open innovation licensing.
Synthesis and Characterization of Poly (Methyl Methacrylate)/Polyethylenimine Grafting Core-Shell Nanoparticles for CO2 Adsorption Using Soap-Free Emulsion Copolymerization  [PDF]
Jun-Won Kook, Ji Young Lee, Ki Seob Hwang, In Park, Jung Hyun Kim, Jun-Young Lee
Advances in Materials Physics and Chemistry (AMPC) , 2016, DOI: 10.4236/ampc.2016.67022
Abstract: Unlike previous emulsion polymerization, we used grafting reactions in soap-free emulsion systems. In this study, we synthesized grafted PMMA/PEI core-shell nanoparticles by varying the MMA/PEI content and molecular weight of PEI (Mn = 600, 8000, and 10,000). The size and morphology of the core-shell nanoparticles were characterized by a particle size analyzer and scanning electron microscopy. The nanoparticles were 178 - 408 nm in diameter and swelled in water or methanol by 30 - 75 nm. The size of the nanoparticles increased with MMA contents, whereas the size distribution progressively became homogeneous with increasing molecular weight of PEI. Lastly, we measured CO2 adsorption capacity of the grafted PMMA/PEI core-shell nanoparticles, and we found the capacity to be limited at a level of 0.69 mg, which occurred for nanoparticles prepared from emulsions at a pH value of 11.
Successful Treatment of a Case of First Bite Syndrome without Any Cause  [PDF]
Seong Ho Chang, Byung Sun Jun, Jong Ouck Choi, Jung Jun Kim, Young Jang
World Journal of Neuroscience (WJNS) , 2015, DOI: 10.4236/wjns.2015.55031
Abstract: Background: For the first bite syndrome (FBS), various causes were suggested such as parapharyngeal space surgery, resection of styloid process, carotid endarterectomy, parotid gland tumor, submandibular gland tumor, and upper cervical surgery. Actually, the real cause of FBS is still not clear. Also, suggested methods of treatment for the FBS are botulinum toxin injection, laser tympanic plexus ablation, pharmacologic approach, and no treatment. The results of those treatments were not satisfactory. Aim: The authors tried to find out the adequate method of treatment for the FBS and also tried to figure out pathologic cause of the FBS through observation of the patient response to the treatment. Case Presentation: A 38-year-old male was presented at head and neck surgery clinic with a sharp pain on the left parotid area especially at the first bite of eating food for two days. There was no cause. The patient was given trigger point injections on his left sternocleidomastoid, masseter, and temporal muscles with left mandibular nerve block five times 3 - 4 days apart. Also small amount of oral anticonvulsants were added for four weeks. Before finishing taking oral medication, the pain was gone completely. Conclusion: The authors experienced a case of FBS with no detectable cause, and treated successfully with the methods of trigger point injection, mandibular nerve block, and oral antiepileptic medication.
Fuzzy positive implicative ordered filters of implicative semigroups
Young Bae Jun,Young Hee Kim,Hee Sik Kim
International Journal of Mathematics and Mathematical Sciences , 2002, DOI: 10.1155/s0161171202109045
Abstract: We consider the fuzzification of the notion of a positive implicative ordered filter in implicative semigroups. We show that every fuzzy positive implicative ordered filter is both a fuzzy ordered filter and a fuzzy implicative ordered filter. We give examples that a fuzzy (implicative) ordered filter may not be a fuzzy positive implicative ordered filter. We also state equivalent conditions of fuzzy positive implicative ordered filters. Finally, we establish an extension property for fuzzy positive implicative ordered filters.
Comparative Study of Imaging Characteristics of I-125 Imaging Using the Siemens Inveon Scanner and Siemens Symbia TruePoint  [PDF]
Young Jun Kim, Ilhan Lim, A Ram Yu, Byung Il Kim, Chang Woon Choi, Sang Moo Lim, Jin Su Kim
Journal of Biomedical Science and Engineering (JBiSE) , 2015, DOI: 10.4236/jbise.2015.810064
Abstract: Objective: Although Iodine-125 (125I) has been widely used for in vitro studies because of its relatively long half-life (60.1 days), 125I imaging is limited because of its low energy (27 - 35 keV), even in an animal-dedicated system. In this study, imaging characteristics of 125I were assessed using a small animal-dedicated imaging system and clinical scanner. Methods: Using the Siemens Inveon and Siemens Symbia TruePoint systems, imaging characteristics such as resolution, sensitivity, and image quality were compared. Mouse high resolution (MHR-0.5), mouse general purpose (MGP-1.0), and mouse high sensitivity (MHS-2.0) collimators were used for the Inveon scanner, and low energy high-resolution (LEHR) and low energy all-purpose (LEAP) collimators were used for the Symbia TruePoint. For animal imaging, 16.8 MBq of 125I was administered to BALB/c mice intravenously, and the planar image and single-photon emission computed tomography (SPECT) were obtained using both scanners. Results: The resolution of 125I for the Inveon scanner was 3.98 mm full width at half maximum (FWHM) at a 30-mm distance with the MHR-0.5 collimator, and the value of Symbia scanner was 8.72 mm FWHM at a 30-mm distance with the LEHR collimator. The sensitivity of 125I for the Inveon scanner was 21.87 cps/MBq, and the value for the clinical scanner was 30.55 cps/MBq. The planar images of mice were successfully obtained at the level of evaluating specific binding in both scanners. Conclusion: 125I small animal imaging can be achieved with a clinical scanner. This result may enhance the utilization of 125I small animal imaging using a clinical scanner.
Positive implicative ordered filters of implicative semigroups
Young Bae Jun,Kyung Ho Kim
International Journal of Mathematics and Mathematical Sciences , 2000, DOI: 10.1155/s0161171200003781
Abstract: We introduce the notion of positive implicative ordered filters in implicative semigroups. We show that every positive implicative ordered filter is both an ordered filter and an implicative ordered filter. We give examples that an ordered filter (an implicative ordered filter) may not be a positive implicative ordered filter. We also give equivalent conditions of positive implicative ordered filters. Finally we establish the extension property for positive implicative ordered filters.
Intuitionistic fuzzy ideals of BCK-algebras
Young Bae Jun,Kyung Ho Kim
International Journal of Mathematics and Mathematical Sciences , 2000, DOI: 10.1155/s0161171200004610
Abstract: We consider the intuitionistic fuzzification of the concept ofsubalgebras and ideals in BCK-algebras, and investigate some oftheir properties. We introduce the notion of equivalencerelations on the family of all intuitionistic fuzzy ideals of aBCK-algebra and investigate some related properties.
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