우리 사회는 1960년대 산업화 이후 경제, 정치 등 다양한 영역에서 급속한 근대화와 압축 성장을 이루었다. 하지만 이러한 성장 속에서 계층 간 소득 격차와 양극화가 심화되는 등 여러 문제가 발생했고, 이는 국토 전체적으로는 물론 도시 내에서도 지역 간 불균형 발전을 야기했다. 본 연구는 소득 수준이 지역 간 불균형 발전에 미치는 영향을 확인하기 위해 가구별 연평균 소득과 인프라 접근성 간 관계를 실증적으로 분석한다. 연구에서는 서울시 소득 수준 데이터와 인프라 데이터를 사용하여 소득 수준과 인프라 접근성 간 관계를 다중회귀분석을 사용해 분석하였다. 연구의 공간적 범위는 서울시이며, 시간적 범위는 2017년으로 설정했다. 인프라 시설은 교육, 교통, 문화･여가, 보건, 체육 관련 시설로 구분했으며, 소득 수준과 함께 인구 밀도, 인구 수, 중심업무지구 여부 등이 접근성에 미치는 영향을 분석했다. 분석 결과 소득 수준에 따라 인프라 접근성에 차이가 나타난 것을 확인했고, 교통 인프라를 제외한 모든 분야에서 비교적 높은 상관관계가 도출되었다. 또한, 소득 수준 변화에 민감하게 반응하는 분야와 소득 수준에 따라 나타나는 인프라 접근성의 차이를 확인할 수 있었다.

Wide-area surface decontamination is essential during the sudden release of radioisotopes to the public, such as nuclear accidents or terrorist attacks. A spray coating composed of a reversible complex between poly (vinyl alcohol) (PVA) and phenylboronic acid-grafted poly (methyl vinyl ether-alt-mono-sodium maleate) (PBA–g–PMVE–SM) was developed to remove radioactive cesium from surfaces. The simultaneous spay of PVA and PBA–g–PMVE–SM aqueous polymer solutions containing Cs adsorbent to contaminated surfaces resulted in the spontaneous formation of a PBA–diol ester bond-based gel-like coating. The Cs adsorbent suspended in the gel-like coating selectively removed Cs-137 from the Cs-contaminated surface. The used gel-like coating were removed from surfaces by simple water rinsing. This recovery way has advantages compared with costly incineration to remove the organic materials for final disposal/storage of the radioactive waste. Thus, our spray coating is suitable for practical wide-area surface decontamination. In radioactive tests, the hydrogel containing Cs-adsorbent showed substantial Cs-137 removal efficiencies of 96.996% for painted cement and 63.404% for cement, which are 2.33 times better than the values for the commercial surface decontamination coating agent DeconGel.

A Partially hydrolyzed poly (vinyl acetate) (PHPVA)-borax complex-based gel-like coating was successfully developed for the decontamination of Simulated nuclear fallout (SFO) from surfaces. The sprayable coating was self-generated on the surface by borate-diol ester bonds after simultaneously mixing two solutions of borax and PHPVA. The SFO particles, synthesized at 1,200°C for melting, were glassy while some crystalline phases (e.g., SiO2 and Fe2O3) existed together. The SFO particles were fixed onto the Stainless steel (SS) substrate by dropping and evaporating water. for examination of the dust-removal performance of PHPVA-borax based coating. The dusts on the SS surface was successfully removed by casting the PHPVA-borax based coating within 1 minute, demonstrating the excellent dust-removal property of the PHPVA-borax based coating. The used PAB complex in wet state was recovered by using vacuum suction machine in short time. The solid-state PHPVA-borax based film was self-delaminated from the SS substrate after fully drying the used PHPVA-borax coating but this requires long period of time.