As modern society has emerged and developed, the subway has established itself as a representative means of transportation in the city due to its speed, accuracy, and accessibility. According to the Indoor Air Quality Management Act, underground stations have established and managed the maintenance and recommendation standards for PM10, PM2.5, CO2, CO, HCHO, NO2, Rn, VOCs However, th the standards for airborne mold has not been applied for subway stations even though management for the health effect of exposure to mold is necessay. In this study, the correlation with major contributing factors was analyzed by measuring the concentration of airborne molds in the indoor air of underground stations and through literature research. It was confirmed that there was a correlation between the concentration of airborne molds in subway stations and the major contributing factors. As a result of the analysis, it was found that the concentration of airborne molds became higher as the location of the platform became deeper underground, during periods of congestion, and especially in summer. There was no significant correlation with the year of construction. Our findings indicate that appropriate management measures should be devised in response to such contributing factors.

This study aims to review observational methods for assessing postural loads such as OWAS, RULA and REBA, and to compare them, based on the literature survey. The literature was searched through academic database of ScienceDirect using the key words of observational methods, OWAS, RULA and REBA. The results exhibited that of the thee methods, RULA was cited in the literature and applied to manufacturing industries the most frequently. Although it has been known that RULA is appropriate for assessing upper body postures, it has been applied to healthcare and social work activities, agriculture, forestry, fishing, construction, mining and quarrying, which require unstable lower limb postures. The countries where more number of relevant studies have been carried out were USA, India, Brazil, UK, etc. It was recommended that of the three techniques, RULA may be better for assessing postural loads, because it evaluated postural loads more highly, irrespective of industry, work type and lower limb postures, and its assessment results had higher agreement rate with experts’ assessments than those of OWAS and REBA. It is expected that the results of this study will be used as a guideline for selecting an appropriate observational method.

PURPOSES: The objective of this study is to investigate the current state of the practice, examining the steps in the process recommended by various agencies and the Asphalt Recycling and Reclaiming Association (ARRA)-namely mix design, structural design, structural capacity evaluation, and material characterization-in order to better understand the implications of hot in-place recycling (HIR). METHODS: In addition, the current practice of state departments of transportation (DOTs) is here reviewed with the purpose of learning from successful past experiences so as to forestall any difficulties that may emerge under similar circumstances. Also, HIR benefits, including reduced costs, improved construction processes, and environmental friendliness are presented, as well as advantages and disadvantages of HIR application. RESULTS: Most of the United States highway system is now deteriorating so that rehabilitation or reconstruction techniques are required for the most distressed roads, taking into account ways to increase the effectiveness of existing budgets. Several options are available in rehabilitating distressed roads, and the choice among these depends on many factors, including pavement distress condition, funding, and design life. Among these techniques, Hot In-Place Recycling (HIR) has emerged as a cost-effective treatment for deteriorated pavements, and has been proven an effective long-term strategy for pavement rehabilitation.

This study was conducted to evaluate the characteristics of exposure to asbestos for ship repair workers in Korea by a systematic review. The number of articles studying asbestos exposure levels from ship repair workplaces was found to be 4. All asbestos concentration reported as either geometric mean and geometric standard deviation or ranges were transformed to arithmetic mean to estimate exposure level. In addition, weighted arithmetic means(WAMs) were calculated by weighing of the different number of samples. The WAM concentrations were 2.746 f/cc during asbestos dismantling work, 0.034 f/cc before asbestos dismantling work and 0.065 f/cc after working respectively. The maximum airborne concentration of asbestos during asbestos removal work was 7.02 f/cc which was 70 times higher than the occupational exposure limit of Korea, 0.1 f/cc. This study recommends that retrospective exposure to asbestos based on various ship types and operations should be assessed.

This research is a literature survey on the Supply chain security. International organization and governments have build security regulations to improve the security in the shipment through supply chain. The researches on supply chain security were increasing during last 10 years. We were surveyed 53 research including Korean and international papers. ills study was classified by research subjects, security regulation, and research methods. Korean researches were focused to introducing and reviewing on the security regulation, but the researches on specific security reinforcement were very rare. International researches were concerned with the subject of the airport security scanning problem, transportation security problem, port selection problem.

Logistics has been recognized as a growing industry in Korea. Accidents in Korean logistics industry are listed up in this paper. As accidents in Korean Logistic industry increasing rapidly, lots of researches on the safety management in logistics industry are published. We surveyed those Korean research papers including supply chain management. Research papers are classified by logistics function and logistics area. Some logistics area still have not been researched on safety management.

본 연구에서는 기후변화에 따른 가능최대강수량(Probable Maximum Precipitation, PMP)의 변동을 추정하기 위한 기반연구로 국내 및 국외의 PMP 산정 방법에 대한 연구동향을 조사하였다. 외국의 문헌조사 결과, 1950년대부터 PMP에 관한 연구가 시작되었으며 주로 경험적인 방법론이 사용되었다. 2000년대에 들어 기후모델을 이용한 기후변화에 따른 PMP의 변화에 관한 연구가 진행되었다. 국내에서는 1960년대부터 PMP에 관한 연구가 이루어졌으며, 1988년 국토교통부의 보고서를 시작으로 국가적인 연구가 지속적으로 수행되고 있었다. 기후변화에 따른 PMP에 관한 연구는 2010년대에 들어서 진행이 되고 있음을 알 수 있었다.

식물의 유전자원은 여러 가지 형태로 보존되지만 자생식물의 화색은 꽃식물로서 자원을 활용하기 위한 측면에서도 큰 가치가 있다고 본다. 따라서 본 연구는 우리나라 자생식물의 화색을 anthocyanidin 분석에 의해 좀 더 진보된 유전자원으로서의 역할을 증진시키기 위해 1차적으로 문헌을 통한 자생식물의 계절별 화색을 알아보아 기초자료로 활용하고자 실시하였다. 자생식물은 총 107종을 선발하여 분류하였으며(Table 1), 한국 자원식물명총람, 한국의 야생식물, 야생화쉽게찾기 등의 자료를 참고하였다. 국내에는 관상가치가 높아 화훼작물로 개발 가능한 자생식물이 많이 있으나 화색에 관한 연구는 극히 미흡한 실정이다. 따라서 앞으로 화색 육종이나 유전자원으로서의 가치 보존을 위해서 폭 넓은 자생식물의 화색에 관한 연구를 수행할 예정이며, 화색육종을 위한 안토시아니딘에 대한 분석을 병행하고자 한다.