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Instruction and prevention of the safety for a fire have been performed continuously by nation. However, the accident due to a fire is not decreasing and causes a serious calamity to people. It is at the initial stage of fire burning that the most effective way to reduce damage is to evacuate and fight a fire. When a fire burns, the equipments reporting to other person or organization concerned are called 'acoustic reporting equipment'. Among those equipments reporting to person, 'a fire bell' is the easiest equipment to approach. Observing the behaviors of people when a fire burning, some are in a quiet indoor, some in a room with other people, some in a square with many people and some in indoor filled with smoke etc. This study aims to find out an acoustic reporting signal appropriate for visual information. For the experiments, visual-auditory experiments were performed through reporting signals and visual informations with several situations that is able to be faced at when a fire burns.
For ground vibration can cause the physical damage to existing buildings, it has always danger of huge accident. Because the characteristics of ground vibration is different by the field condition, it is difficult to prevent the accident due to the vibration. Nevertheless, it is necessary to establish the prevention plan to minimize the damage by generating the vibration below the limitation, From this point, the blasting job could be carried out through blasting pattern design and control.<br/> This study aims to propose the prediction equation of blasting appropriate for the constructive granite ground by measuring and analysing the blasting data of 954 times and the results can be applied for the blasting in the same ground type.
As the scale of building construction is larger and more complex, the tendency of the risk serious accident case is increasing.<br/> From this reasons, this study evaluated the hazard of work types for building construction to prevent construction accident this<br/> study the report on the serious accident case during last 11 years. In addition, analysis of accident case depending on the number<br/> of persons by work types and collection of construction specialists' opinion about the risk by work types are carried out, and the<br/> results are as follows;<br/> 1) Work types by the Korea Occupational Safety and Health Agency(KOSHA) with 16 main and 75 subcategories and by the<br/> Standard Specifications with 22 main and 74 subcategories were classified and analyzed. 2) As a result of analyzing the report on<br/> the serious accident case from 1992 to 2002, the percentage of risk occurrence was 17.4% for mold work, 11.6% for temporary<br/> work and 11.0% for steel-frame work with A-class. 3) Through questionnaire to construction managers and specialists, the order<br/> of risk occurrence of serious accident case and the order of risk occurrence depending on the number of persons by work types<br/> were compared. As a result, the risk order by work types for building construction could be proposed.
The "Sound Classification System on Floor Impact Sound Insulation Performance" is being studied in Korea. For that study. vocabularies appropriate for evaluation and reporting are needed. In this study, an adequate word for evaluating the performance of floor impact sound insulation have extracted by reviewing the existing vocabularies and augmenting this with the results of a questionnaire prepared especially for apartment dwellers.<br/> As a result of this study. followings are suggested. 1) The heavy impact sound sources are more highly ranked than light impact ones. And the louder sound sources are more accumulated points. 2) Highly ranked vocabularies are different for each source. 3) Psycho-acoustic words such as Irritate. Disagreeable, Strident. Disturbed, and Dissonant are highly ranked. Irritate is the word most accurately expressing the subjects unpleasant feeling of domestic floor impact noise.
본 연구는 장시간 서서 근무하는 고령 입식 근로자를 대상으로 근무 중 탄력압박밴드 착용이 하지부종 및 피로도에 미치는 영향을 규명하고자 실시하였다. 이를 위해 고령 입식 근로자를 대상으로 근무 중 탄력압박밴드 미착용 집단 12명, 근무 중 탄력압박밴드 착용 집단 12명의 두 집단으로 나누어 결과를 자료화 하였다. 연구결과 다음과 같은 결론을 얻었다. 첫째, 근무 전·후간 하지부종의 변화는 미착용 집단은 유의하게 증가한 반면 착용 집단에서는 유의하게 감소하였다. 둘째, 근무 전·후간 피로도의 변화는 미착용 집단에서 유의하게 증가한 반면 착용 집단에서는 변화가 없었다. 이상과 같은 결과로 미루어 볼 때 고령 입식 근로자에게 있어 근무 중 탄력압박밴드 착용이 긍정적인 효과를 미치는 것으로 나타났다. The purposes of this study is to evaluate the effects of compression band on lower extremity edema and fatigue. The subjects were aged workers who work standing-up. This study was divided into 2 groups: take off stocking group(TOS, n=12) and put on stocking group(POS, n=12). POS group was applying the compression band during office hours. The results to obtain from study were as follows; TOS group was increased fatigue and the circumference of ankle and calf, but POS group was decreased fatigue and the circumference of ankle and calf. These results suggested that wearing compression band was a beneficial influence on lower extremity edema and fatigue.