Earticle

National park visitors are expanding to National Park entrance fee abolition and five days a week system enforcement is rapidly increasing. Public sensitivity to socially various accident is a track record that is growing more and more. Analyzes the usage of the national park visitors who are looking for people comfortable leisure life and health, also, the work of actual analysis of the National Park safety management, is that always necessary, also, the future of the National Park will be utilized as a material that can be utilized in the development of safety policies.

선형가속기의 선량평가를 위한 멸균증류수를 사용 시 보존기간에 따른 불순물 유입 으로 탁도가 변화로 선량값의 오차가 발생하게 된다. 이에 탁도 측정을 통한 멸균증류 수 교체기준 및 교정계수를 획득하고자 한다. 물팬텀 내 멸균증류수를 2주 간격으로 8회에 걸쳐 탁도를 측정하고 10MV 광자선을 이용하여 선량을 측정하였다. 측정결과 탁도증가에 따른 선량오차는 비례관계를 보이며, 허용오차인 3%에 대치되는 탁도는 2.8 NTU로 나타났다. 이를 통해 선량측정 시 탁도를 측정하여 해당 교정계수에 적용 하여야 하며, 탁도가 2.8 NTU를 넘는 경우에는 멸균증류수를 교체하여야 할 것이다. 향후 이를 통해 선형가속기의 절대선량 평가가 별도로 이루어진 실험 및 탁도의 세분 화에 따른 교정계수 산출을 통한 연구의 기틀을 마련하고자 하였다.

This study documents the 3-phase BLDC(Brushless DC) motor to improve conventional ventilator motor. Energy efficiency, noise, and air pollution reduction for the high-performance vibration of the BLDC motor has been used in many fields. BLDC motors for ventilator, we studied the controller and software.

This research presents efficient use of coverage factor of expanded uncertainty. Process Capability Indexes(PCIs) are newly introduced in this paper to take in consideration of either including correction and uncertainty of calibration or not for deciding bilateral specification, upper specificand and lower specification.

Everyday many casualties have been occurred in the buildings. the design of the fire safety of buildings is based on the regulations. Otherwise, the secure for fire safety performance has not been designed in the practical aspects. These problems are caused by the incentive effects. From the perspectives of building owners, they do not have the incentives for direct investment on the safety plan of fire-rescue. So, it is necessary to force the laws and regulations on them. In addition, a special evacuation stairs of the apartment with the ventilation equipment is not being secure at all. Instead, an installation of special evacuation stairs in/outside the open window inside ancillary rooms should be reviewed.

The fatalities of the evacuation facilities of the buildings accessed by unspecified people on the daily basis are significantly emerged as a problem. Evacuation facilities should be designed for common human behaviors the assumption that the customers are not familiar with the buildings. In addition, the characteristics of modern buildings such as high-rising and enlarging should be considered to design the evacuation plan. The evacuation is a problem that people reach a safe place with themselves. The architectural plan for the life safety should be established to minimize various disaster damages. To do so, the factors such as time, risks on the steps, combustion ash variables, safety training should be considered on the architectural planing.

기업을 대표하여 고객들과 상호작용을 주로 하는 서비스 산업의 종업원의 역할은 주어진 업무 특성 때문에 기업의 서비스 수준 평가에서 매우 중요한 영향을 미치게 된다. 서비스 제공 과정에서 나타나는 종업원의 감정 상태는 서비스의 최종성과라고 할 수 있는 직무성과와 서비스 제공수준에 많은 영향을 미치게 된다. 본 연구는 감정노동자 관점에서 감정노동과 가면행위가 감정관리 활동과 소진에 미치 는 영향 및 감정관리 활동이 조직성과에 미치는 영향, 그리고 감정관리 활동과 조직성 과간의 관계에서 사회적 지원과 직무자율성이 어떤 영향을 미치는지 규명하기 위해 문헌연구와 실증연구를 수행하였다. 문헌연구는 관련 논문을 조사하여 감정노동, 가면 행위, 감정관리 활동, 소진, 직무만족, 서비스 수준, 사회적 지원 및 직무 자율성의 연 구변수에 대하여 고찰하고, 연구변수 사이의 관련성과 영향을 파악하였다. 실증연구를 위한 설문조사를 실시하여 수집된 자료는 SPSS 20과 AMOS19를 이용하여 구조방정 식모형분석과 위계적 회귀분석을 실시하였다.

Quality of life due to climate change are different and are seeking a way, that affects most of the water seems to be the field. Carbon dioxide is a greenhouse gas causing climate change in the proportion known to be the most. According to the OECD's 2050 Environmental Outlook in Korea is the OECD country with the most severe water stress was released. Water shortages in 2020, Korea has been known to enter the country. The OECD Green Growth policy of the keyword in the water to be present Water Footprint is produced from raw materials procurement, disposal and recycling of the product's life cycle to calculate the water usage of water resources is a technique to quantify the load. Water footprint calculations are used in the per-unit water consumption. In this study, to measure the carbon dioxide emissions and water usage more accurately measure who try and look for ways to manage