Purpose: This study was done to investigate the factors that influence non-combat soldiers' suicidal ideation. Methods: The participants of survey were 302 of soldiers in Y and H city. The data were collected from Aug. 5 to 8, 2008 in H city and Oct. 25 to 30, 2009 in Y city. The instruments were the SRI (Stress Response Inventory) developed by Ko, Park, & Kim (2000), SDS (Self-Rating Depression Scale), developed by Zung (1965) and SSI (Scale for Suicidal Ideation) developed by Beck (1979). The data were analyzed using SPSS 12.0. Results: The mean score for the SRI, SDS and SSI were 15.71±19.81, 32.02±9.67 and 1.34±2.74 respectively. There were positive correlations between the SRI and SDS (r=.763), SRI and SSI (r=.583), SDS and SSI (r=.575). Stress, depression, age, and educational level accounted for 41% of the variance in suicidal ideation. Conclusion: The results of this study indicates that soldiers' suicidal ideation is related to stress, depression, age, and educational level and that there is a need to develop programs which focus on stress and depression management.

The use of steel plates has been greatly increased in bridge construction, particularly for long-span bridges, and connections between the plates are made usually using high-tension bolts. However, the specifications on the use of large-sized high-tension bolts are not adequately stated in the currently available construction manuals. In order to provide further information on the use of the large-sized high-tension bolts, this study experimentally investigated the relaxation and slip behavior of M30 bolts with varying bolt size and plate thickness. In addition, numerical evaluation using FEM was performed to investigate the compressive stress occurred on the inside of bolt hole. The analyzed results were compared with the stress distribution measured from strain gages attached on the bolts and bolt holes. From the study presented herein, it was found that the relaxation was increased as the size of bolt increased, and that the M30 high-tension bolts developed slip coefficient greater than 0.4. The thickness of plate did not significantly affect the compressive stress distribution around the bolt holes.