• 발명특허
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• v.31 no.12 s.365
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• pp.26-27
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• 2006

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.855-856
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• 2013

• 발명특허
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• v.1 no.6 s.6
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• pp.3-5
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• 1976

• 발명특허
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• v.34 no.7
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• pp.34-36
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• 2009

• Electronics and Telecommunications Trends
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• v.23 no.6
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• pp.32-37
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• 2008

최근 연구가 활성화되고 있는 능동형 전파식별(RFID) 및 유비쿼터스 센서 네트워크(USN) 기술은 그 파급효과가 매우 크고 방대하여 향후 미래 핵심 산업으로 자리잡을 것으로 예상되고 있다. 이러한 RFID 센서 태그 및 USN 센서 노드의 구동을 위해서는 태그나 노드 규격에 적합한 초소형이면서도 경량이고 장수명성을 가지는 전원소자 기술을 확보하는 것이 매우 중요하다. 현재는 이러한 RFID/USN용 센서 태그/노드에 일부 적용되어 그 가능성을 인정받은 전원소자 중 대표적인 것으로 리튬 이차전지와 필름형 일차전지가 있다. 본 고에서는 RFID/USN용 전원소자의 기본 개념 및 규격, 그리고 요구조건 등을 소개하고 국내.외 연구 및 특허 동향과 시장전망 등을 분석하여 향후 기술개발을 위한 참고자료로 삼았으면 한다.

• Journal of Korea Society of Industrial Information Systems
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• v.29 no.2
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• pp.133-151
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• 2024

The purpose of this study is to analyze the core values of Donghwa Pharmaceutical, which has been in the pharmaceutical industry in South Korea for 126 years, and examine the core competencies that have consistently enabled it to maintain a competitive advantage. When applying the VRIO Framework, various general pharmaceuticals, including Donghwa Pharmaceutical's 'Hwalmyeongsoo,' which has maintained the top position in the liquid digestive medicine market for 126 years, are identified as powerful resources (Value) that generate 'sustained competitive advantage.' The principles of ethical management based on the Donghwa spirit, the long-standing principles of trust and belief, and the entrepreneurial spirit possess rarity. Having won four Guinness World Records and holding numerous new drug patents, Donghwa Pharmaceutical has consistently secured the top position in the digestive medicine category of the Korean Industrial Brand Power for 19 consecutive years. The company has been designated as a 'Golden Brand,' and its products have high levels of awareness, making them highly difficult to imitate. Lastly, the organization is structured to efficiently utilize resources such as a transparent hierarchical system, fair personnel management, diverse training programs, and high employee welfare and salaries. This study systematically analyzes the core values of Donghwa Pharmaceutical from a managerial perspective and proposes directions for the company to evolve into a long-lasting enterprise. The research outcomes will provide valuable insights for formulating long-term management strategies.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.4
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• pp.443-449
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• 2012

Nanoskins were fabricated on a Ti-6Al-4V material by carrying out various surface treatments, i.e., deep rolling, laser shot peening, and ultrasonic nanocrystal surface modification (UNSM). These surface treatments are newly developed techniques and are becoming more popular for industrial applications. Fatigue tests were carried out using material test system (MTS); these tests included the axial loading tension-compression fatigue test (R = -1, RT, 5 Hz, sinusoidal wave) and rotating bending fatigue test (R = -1, RT, 3200 rpm). The analysis of the crack initiation pattern in the UNSM-treated material indicated that the crack was interior originating in the axial loading tension-compression cycle, and was surface originating in the bending fatigue test. UNSM treatment significantly improved the fatigue strength for the regime of above $10^6$ cycles that S-N curve of rotating bending stress clearly show the performance of a 5 mm titanium specimen after UNSM treatment is similar to that of an untreated 6 mm titanium specimen.