Stone pagoda structures have continued to be aged due to the combination of various damage factors. However, some studies on nonstructural damage have been carried out, but assessment studies on structural damage have not been done in various ways. Therefore, in this study, structural and nonstructural influencing factors according to the damage types are classified and the damage assessment according to the structural influencing factors affecting the behavior of the stone pagoda structure is performed. In addition, the damage rating classification criteria for each type of structural damages or damage locations are presented, and the damage index is calculated by providing the criteria for the classification of damage according to the degree of damage to which the damage is caused. Therefore, this study can evaluate quantitatively the damage status of stone pagoda structures.

내염소성 원생동물인 크립토스포리디움, 지아디아 등 병원성 미생물의 제거에 대한 신뢰성을 확보하기 위해 정수 처리 공정에서 막여과 시스템이 각광받고 있으며, 이러한 신뢰성을 보증하기 위해 막 완결성에 대한 연구가 중요시되고 있다. 막 완결성 시험은 크게 직접법과 간접법으로 분류되는데, 직접법 중 압력기반의 시험은 버블포인트 이론을 근간으로 병원성 미생물의 최소 크기인 3 μm 크기 이상을 감지할 수 있는 감도로 USEPA Guidance Manual에서 제시하고 있다. 간접법은 온라 인 상태에서 연속적인 운전이 가능하다는 점에서 널리 사용되지만, 직접법에 비해 현저히 낮은 막 손상 감지 감도를 가지고 있 으며, 손상 부위를 특정 지을 수 없는 한계가 있기에 이러한 감지 감도를 개선해야 할 필요가 있다. 따라서 본 연구에서는 압 력 손실 시험에 의한 막 완결성 시험을 통해 막 파단 형태별, 파단 개수, 초기설정압력값에 따른 압력손실률과 LRVDIT 신뢰 성 범위를 상호 비교함으로써 막 손상에 따른 감도의 결과를 정량화하여 UCL 기준을 나타내어 비교 평가하였다.

Objective: The purpose of this paper was to study the effect of typing speed and accuracy according to 4 different typing aids on computer keyboard and mouse use. Method: The subjects of this study were 11 of C6∼C7 complete injury patients who had been over six months after injury, and four style of the typing aids, finger, slip-on, band, and modified finger, were used in this study. Each data of typing aid was collected by measuring typing speed and accuracy and analysed with SPSS 10.0. Results: The measured result according to 4 typing aids in typing speed showed that a modified finger typing aid was 41.09 as the highest performance and a bend typing aid was 33.27 as the lowest performance. The typing speed through styles was statistically significant(p<0.05). The measured result according to typing aid style in typing accuracy showed that a bend typing aid was 96.45% as the highest performance and a finger typing aid was 95.45% as the lowest performance. The typing accuracy through styles was not statistically significant(p>0.05). Conclusion: The results of this study showed that modified typing aid seems to be the most efficient among four style of typing aids. Thus, modified typing aid can be an available typing aid having both functional and cosmetic factor for C6∼C7 complete injured patients. In the future use of the modified typing aid should be needed much more as well as its reevaluation should be performed.

석탑문화재는 오랜기간 야외에 노출됨으로써 자연재해, 인위적 훼손 등으로 인해 다양한 손상이 발생하고 있다. 이러한 다양한 손상유형에 따른 구조적 안전성을 확보하기 위해서는 체계적인 손상유형의 분류와 손상요인에 대한 분석이 필요하다. 이에 따라 본 연구에서는 석탑문화재에 발생하는 다양한 손상을 구조적 손상과 비구조적 손상으로 분류하고 손상유형에 따른 구조적 영향요인을 분석하고자 한다.

In this study, a magnetic flux leakage (MFL) method that is known as a suitable non-destructive evaluation (NDE) method for continuum ferromagnetic members was applied to detect the various types of local damages of the steel wire ropes. 3types of artificial damages, such as cutting, corrosion and compression, were formed on wire rope specimen. A multi-channel MFL sensor head that can maintain the constant lift-off was fabricated to scan the wire rope specimen. The fabricated MFL sensor head measured the magnetic flux signals from the three types of damaged specimens. The capability of damage detection according to damage type was verified from the measured MFL signals from each type of damage. And, the characteristics of the MFL signals were compared and analyzed by type of damage.

Youth Training Facilities is a facility used for youth training activities. Youth Training Facilities is a facility that could be vulnerable to accidents. The purpose of this study is to minimize any accidents through analysing previous inspection data. Should avoid accidents that may occur during training activities through real-time management of the facility.

The structural damage patterns of the Korean Traditional Wood Structures classified as the Jushim-po and Da-po Type are investigated. The investigations are based on the reports of repairing or actual measurements for the Jushim-po and Da-po structures. Lastly, the vulnerable parts according ot structural systems are analyzed statistically.

To suggest the preliminary data for effective maintenance of bridge structures, the damage patterns of expressway bridges are quantitatively analyzed in the present study. Damages detected in concrete deck slab, girder(concrete/steel), abutment and pier are classified into damage patterns and details. From this study, the damage characteristics of expressway bridges are figured out, and most of damages are defect which is resulted from a shoddy and fault construction

기 시행된 관련 보고서에 의하면 외관 상태에 대한 육안 점검은 구조적 안전성 평가를 위해 대단히 중요한 부분이다. 본 연구는 개별 손상유형의 분리 평가에 의한 콘크리트 바닥판에 대하여 개선된 상태평가 방법을 제안한다. 먼저, 한데 묶여서 다루어졌던 여러 유형의 손상들을 분리하고, 다음으로 현행 지침을 토대로 가중점수를 부여하였다. 그 밖의 전반적인 과정은 혼란을 피하기 위하여 가능한 한 그대로 유지하였다. 제안된 방법을 4개의 교량에 대해 기 수행된 진단프로젝트에 적용, 시험 결과는 본 방법이 실무에서 드러난 현행 지침의 논점을 보완할 수 있다는 점에서 합리성과 적용성을 보여준다. 상세 분할 및 가중평가에 근거한 합리적인 시스템 평가와 함께 과도 손상 부재의 특별 관리로 이원화함으로써 보수·보강에 대한 적정성과 경제성을 부여하고 안전성을 확보할 수 있다. 본 연구의 이원화된 평가방법은 가치공학의 적용 영역을 유지관리 단계로 확장한다.