The purpose of this study was to investigate temporal and spatial variations, and moments of the lower extremities of gait while playing the game with smartphone under different curb-heights. Ten male elementary school students(from 10 years to 13 years old) participated in this study. Twelve infrared cameras(Oqus-500) and two force plates(9260AA) were used for collecting data and these were processed via Visual 3D software. In conclusion, with or without smartphone and with different curb-heights, the spatial and temporal parameters of walking were not the same and coefficients of variations were not consistent. The maximum joint moments of the lower extremities with or without smartphone were not statistically significant but those of hip and ankle joint were statistically significant with regard to the different heights of the curbs.

As commonly known, The U.S. Army Corps of Engineers, made up of approximately 35,000 engineers, is the premier public construction organization in the world. The Corps, the world-wide and unique organization, has the multi-functions like civil works projects, water resources management, environmental protection, disaster response as well as military construction. To meet national and military requirements , the Corps has developed various systems. As the key systems, the PMBP (Project Management Business Process) is an innovative way to solve increasingly complex problems and then to achieve the Corps’ vision.and Partnering system and Construction Quality Management for Contractor , developed by UASCE, also are the significant construction management tools in worldwide. Many Korean construction contractors have verified their high constructability in the overseas. On the contrary, they can’ t meet the customer’ s needs sufficiently in the country and the reason may be caused from the absence or inadequate project management system. Therefore, this article provides the overview of the USACE and partnering system and lays emphasis on the USACE’ s CQM system. The desirable way to meet the customer’ s needs in projects should be mainly aimed at systematic business process. Some future-oriented suggestions to improve the construction quality management conclude this article.