• Title/Summary/Keyword: Convergence Property

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Recent Trends in Composite Materials for Aircrafts (항공기용 복합소재의 개발 및 연구동향)

  • Kim, Deuk Ju;Oh, Dae Youn;Jeong, Moon Ki;Nam, Sang Yong
    • Applied Chemistry for Engineering
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    • v.27 no.3
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    • pp.252-258
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    • 2016
  • The weight reduction and improved mechanical property are one of the prime factors to develop new materials for the aerospace industry. Composite materials have thus become the most attractive candidate for aircraft and other means of transportations due to their excellent property and light weight. In particular, fiber reinforced polymer (FRP) composite materials have been used as an alternative to metals in the aircraft. The composite materials have shown improved properties compared to those of metal and polymeric materials, which made the composites being used as the skin structure of the airplane. This review introduces different types of materials which have been developed from the FRP composite material and also one of the most advantageous ways to employ the composites in aircraft.

A Proposal for the Application of Multi-Platform Convergence for Intellectual Property-Based Games (지식재산권 기반 게임의 융복합 멀티 플랫폼 활용 방안 제안)

  • Lee, Hyun-Ku;Kim, Tae-Gyu
    • Journal of Digital Convergence
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    • v.18 no.2
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    • pp.421-426
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    • 2020
  • The global game market is growing evenly across a variety of platforms, but in the Korean game market is a decline in growth rates on PC and mobile platforms, which account for more than 80% of the total Korean game market, which requires an alternative. In this study, propose a multi-platform launch of IP-based games as a way to increase the growth rate of the Korean game market. It has been analyzed that multi-platform launch methods can be divided into Stand-alone Multi-platform method, Interlocking multi-platform method, and Upgrade-interlinking Multi-platform method, respectively, and the effect of expanding, providing more satisfactory game play environment and preventing them from escaping to competitive games. Given the limited case analysis in this study, further studies are needed to propose more effective multi-platform utilization measures.

A Study on the Utilization of Intellectual Property Rights Convergence in Mobile Games through Market Analysis (시장분석을 통한 모바일게임 융복합 지식재산권 활용 연구)

  • Lee, Hyun-Ku;Kim, Tae-Gyu
    • Journal of Digital Convergence
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    • v.18 no.1
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    • pp.309-314
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    • 2020
  • In this study, look into the future prospects of mobile games produced using IP, in the domestic market and to present more effective IP selection criteria when producing new mobile games using IP. To this end, classified IP-enabled mobile games and analyzed IPs used for IP-enabled mobile games by each type for games that are located in the top 200 in sales ranking of Google Play Store. According to the analysis, the mobile game using IP has shown significant performance in terms of sales performance, and the trend will continue in 2020. It was analyzed that 'Game' types of IP using games(based on domestic games) can achieve the highest sales results. Since the success of a game affects a variety of factors other than IP, further research is needed in more diverse ways on the impact of IP on the success.

Characterization and Preparation of PEG-Polyimide Copolymer Asymmetric Flat Sheet Membranes for Carbon Dioxide Separation (이산화탄소 분리를 위한 폴리에틸렌글리콜계 폴리이미드 공중합체 비대칭 평판형 분리막의 제조 및 기체 투과 특성평가)

  • Park, Jeong Ho;Kim, Deuk Ju;Nam, Sang Yong
    • Membrane Journal
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    • v.25 no.6
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    • pp.547-557
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    • 2015
  • In this study, we synthesized polyimide with high carbon dioxide gas transport property using 2,2-bis(3,4-carboxylphenyl) hexafluoropropane, 2,3,5,6-tetramethyl-1,4-phenylenediamine and poly(ethylene glycol) bis(3-aminopropyl) terminated and then we calculated solubility parameter of synthesized polymer and non-solvent phase separation coefficient to determine proper solvent for preparation of asymmetric membrane, also we measured the viscosity of the polymer solution to check polymer contents in membrane solution and prepare asymmetric membrane with $LiNO_3$ additives. The morphology and gas separation property of membrane prepared by phase separation method was confirmed using Field Emission Scanning Electron Microsope and the single gas permeation measurement apparatus. We confirmed that the carbon dioxide permeance of the membrane increased and the selectivity showed little change with decreasing of the volatile solvent contents.

Evaluation of Adhesion, Hydrophobicity and Color Gamut of Nanoparticle embedded Polyurethane Topcoat for Aircraft with 3 Different Nanoparticles (항공기용 3종류 나노입자들로 함침된 폴리우레탄 탑코트의 접착성, 소수성 및 색재현성 특성평가)

  • Kim, Jong-Hyun;Kwon, Dong-Jun;Park, Joung-Man
    • Journal of Adhesion and Interface
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    • v.22 no.1
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    • pp.16-21
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    • 2021
  • In the aircraft industry, anti- and de-icing are one of very important techniques for the safety. The anti-icing technique had not been studied while de-icing technique had been not only researched enough but applied to aircraft industry. In this work, surface roughness and energies of polyurethane (PU) topcoat were controlled with 3 different nanoparticles which was coated to PU topcoat. It was evaluated via static contact angle using distilled water. The adhesion property of 3 nanoparticles was evaluated directly using adhesion pull-off test. The color gamut of nanoparticle coated PU topcoat was also evaluated with 3 different nanoparticles. It was determined using RGB color degree variation between neat PU topcoat and coated nanoparticle. Finally, the optimized nanoparticle was determined to manufacture hydrophobic surface and to maintain color of neat PU topcoat for the aircraft.

Analysis on the Patent Portfolio for Hidden Champion Companies: Focusing on the "Hidden Champion" companies introduced in Herman Simon's book (히든 챔피언 기업의 특허 포트폴리오 연구: 헤르만 지몬의 저서에 소개된 "히든 챔피언" 기업들을 중심으로)

  • Lee, Haeng-Byoung;Yang, Dong-Won
    • Journal of the Korea Convergence Society
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    • v.11 no.7
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    • pp.259-272
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    • 2020
  • In fostering dynamic, innovative SMEs, hidden champion companies can be an appropriate model for SMEs to learn the success factors. On the other hand, the need for intellectual property management is becoming important as the value of a company is changing from a financial asset to an intellectual property. Therefore, in this study, the patent portfolio analysis of the hidden champion companies mentioned in Herman Simmon's book "Hidden Champion" was performed. As a result of the analysis, it was confirmed that patents are not possessed or patent activities are actively carried out and a differentiated intellectual property management strategy is implemented to improve patent quality depending on the characteristics of the technology possessed. The results of these studies can be used as basic data to prepare an intellectual property management strategy for companies that want to create opportunities to acquire monopoly rights and reduce patent maintenance and management costs. In addition, in this study, the patent IPC analysis verified that Herman Simmon's claim that "Hidden champions have the ability to focus on core competencies and focus on one technology" is valid.

Promoting Technology Convergence in Industrial Clusters through Intellectual Property Service Center (산업클러스터 기술융합 활성화를 위한 효율적인 지식재산서비스 지원 방안 연구)

  • So, Byeong-Woo;Gong, Byeong-Yeong
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.6 no.1
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    • pp.133-158
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    • 2011
  • In 2030s, as we enter in to the era of BT (Bio-Technology) market opening up, technologies in all areas such as IT, data analysis, IC and biochemistry are necessitated. New development in technology will be based on "Convergence", especially between IT and BT. In order to have synergy effects from the convergence, those related industries and universities should be physically inter-related in an appropriate location. Until 2009, 819 industrial clusters where many Korean industries and firms are concentrated have been constructed in Korea. They have had supports from various institutions and facilities. However, few systems designed to assist "intellectual property (IP) service" for technology convergence are found in Korea. Thus, by analyzing current problems and challenges of the Korean industrial clusters, this paper suggests a possible answer to maximize the synergy from technology convergence through organic cooperation among companies in industrial clusters. This paper finds that the Korean industrial clusters need to establish IP service supporting center while suggesting its function and concept on organization structure, and work flow, which help firms to develop IP strategies. In addition, the paper provides a direction for current IP system and policies implemented by the Korean government to be more effective to small-and-medium-sized companies located in the industrial clusters.

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Research on Management Strategies for Intellectual Property Activities to Improve Corporate Performance (기업의 성과 제고를 위한 지식재산활동의 경영전략 연구)

  • Sangho Lee;Kwangmoon Cho
    • Journal of Internet of Things and Convergence
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    • v.9 no.6
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    • pp.83-92
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    • 2023
  • The purpose of this study is to provide a rational management strategy to improve the management performance of companies through intellectual property activities. Through this study, we aim to explore countermeasures to strengthen competitiveness in a changing global environment. A survey of 200 companies was conducted from September 1 to October 30, 2023. Statistical analysis was conducted using frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, multiple regression analysis, and difference analysis. The conclusions are as follows. First, the impact of intellectual property activities on management performance was found to be creation and utilization. Second, the impact of management strategies on management performance was found to be differentiation strategy, cost advantage strategy, and concentration strategy. Third, cost advantage strategy has a partial mediation effect on the relationship between creation activities and managerial performance of intellectual property activities. Fourth, the differentiation strategy has a partial mediating effect on the relationship between the creation of intellectual property activities and managerial performance. In addition, differentiation strategy has a full mediating effect on the relationship between the utilization of intellectual property activities and performance. Fifth, concentration strategy has a partial mediating effect on the relationship between intellectual property activity utilization and management performance. Sixth, there is a difference between creation activities, protection activities, utilization activities, cost advantage strategy, differentiation strategy, financial performance, and non-financial performance based on venture certification status. As the importance of intellectual property is increasing in the era of technological hegemony, IoT companies will need to improve their management performance through venture certification and strategies utilizing intellectual property in order to secure future competitiveness. Based on this study, we hope that IoT companies will maximize their performance by implementing efficient strategies that consider IP activities.

A Gaussian Approach in Stabilizing Outputs of Electrical Control Systems (전기제어 설비의 출력 안정화를 위한 가우시안 접근법)

  • Basnet, Barun;Bang, Jun-ho;Ryu, In-ho;Kim, Tae-hyeong
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.67 no.11
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    • pp.1562-1569
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    • 2018
  • Sensor readings always have a certain degree of randomness and fuzziness due to its intrinsic property, other electronic devices in the circuitry, wires and the rapidly changing environment. In an electrical control system, such readings will bring instability in the system and other undesired events especially if the signal hovers around the threshold. This paper proposes a Gaussian-based statistical approach in stabilizing the output through sampling the sensor data and automatic tuning the threshold to the range of multiple standard deviations. It takes advantage of the Central limit theorem and its properties assuming that a large number of sensor data samples will eventually converge to a Gaussian distribution. Experimental results demonstrate the effectiveness of the proposed algorithm in completely stabilizing the outputs over known filtering algorithms like Exponential smoothing and Kalman Filter.

Encapsulation of Semiconductor Gas Sensors with Gas Barrier Films for USN Application

  • Lee, Hyung-Kun;Yang, Woo Seok;Choi, Nak-Jin;Moon, Seung Eon
    • ETRI Journal
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    • v.34 no.5
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    • pp.713-718
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    • 2012
  • Sensor nodes in ubiquitous sensor networks require autonomous replacement of deteriorated gas sensors with reserved sensors, which has led us to develop an encapsulation technique to avoid poisoning the reserved sensors and an autonomous activation technique to replace a deteriorated sensor with a reserved sensor. Encapsulations of $In_2O_3$ nanoparticles with poly(ethylene-co-vinyl alcohol) (EVOH) or polyvinylidene difluoride (PVDF) as gas barrier layers are reported. The EVOH or PVDF films are used for an encapsulation of $In_2O_3$ as a sensing material and are effective in blocking $In_2O_3$ from contacting formaldehyde (HCHO) gas. The activation process of $In_2O_3$ by removing the EVOH through heating is effective. However, the thermal decomposition of the PVDF affects the property of the $In_2O_3$ in terms of the gas reactivity. The response of the sensor to HCHO gas after removing the EVOH is 26%, which is not significantly different with the response of 28% in a reference sample that was not treated at all. We believe that the selection of gas barrier materials for the encapsulation and activation of $In_2O_3$ should be considered because of the ill effect the byproduct of thermal decomposition has on the sensing materials and other thermal properties of the barrier materials.