In the nuclear environment, sensors ensure safety, monitoring, and operational efficiency under various operating conditions. These sensors come in various forms, each tailored to specific purposes, including nuclear safety and security, waste treatment and storage, gas leak detection, temperature and humidity monitoring, and corrosion detection. Ensuring the longevity of sensors without the need for frequent replacements is a vital goal for researchers in this field. This paper explores materials that can act as shields to protect sensors from harsh environmental conditions (high radiation and temperatures) to enhance their lifetime. The types of material that had been explored were divided into categories: metal and non-metal. Fourteen types of metal and seven different plastic materials were studied and focused on their characteristics and current applications. Considering properties like melting point, intensity, and conductivity, plastic materials are chosen to be examined as sensor shielding material. A preliminary experiment was conducted to verify signal characteristics changes by shielding material. Metal material and plastic material each were placed in the middle of the granite and the target sensor. The result showed that when metal is between the granite and the sensor, the density and impedance are higher in granite than in the metal. This leads to signal attenuation and a shift in resonance frequency, while plastic does not. Therefore, PPS (Polyphenylene sulfide) and PAI (Polyamide-imide) have lower density and impedance than granite while also possessing heat, moisture, and radiation resistance for effective shielding.

이 연구는 방송의 혜택을 모든 국민이 고루 누릴 수 있도록 보편적 서비스를 유지, 확대하기 위한 최선의 방편으로써, 시청자주권을 확보하기 위한 최선으로써 시청자참여프로그램의 현황을 고찰하고 활성화방안을 모색하고자 했다. 연구 방법으로 시청자참여프로그램 운영 방송사담당자를 대상으로 심층인터뷰를 수행했다. 연구 결과, 시청자참여프로그램 활성화를 위해서는 향후 시청자제작자의 저변확대 및 홍보, 참여프로그램 질 향상, 시청자참여프로그램 의무편성, 지역방송사업자 중점 지원, 시청자미디어센터의 활용도 향상 및 미디어교육 원스톱 지원체계를 구축 등이 필요함을 논의했다