In rapidly changing circumstances, the construction industry shows tendency to be more complicated and expanded and these changes are becoming the main factors aggravating uncertainty in straightening construction costs in the industry. The most important process in preliminary phase is calculation of appropriate construction sum and accurate estimation is required to accomplish it. Currently, local constructors draw up estimates by using the ‘per square meter’ calculation method or by applying of previous cases as they are. These methods become suppressive cause for making clear decisions by occurring errors in quantity survey in a way of data emission, replication and so on. Therefore, in this study, approximate estimation model of finishing construction shall be proposed to assist people to make prompt decisions in initial design stage. To develop this research, the existing quoting practices shall be presented and categorized by usage of space. To achieve this, information on performance, furnishings and unit price according to space definition has been collected in advance, which again enable ontology knowledge classification scheming database of space unit to be utilized and presented as knowledge information.

A prediction of construction cost in preparation for construction document is calculated in compliance with the unit cost in Public construction of korea. This eventually means that the reasonable construction cost of a building can't be determined before construction document phase cost of construction is settled and that the cost of construction is calculated inefficiently because of connection failing between cost management of detailed estimation and information. To improve those problems, therefore, Cost estimating model of structural building elements with approximate quantity survey method is suggested in this research. The model predict the amount of materials and the cost of construction on the basis of historical similar cases. In the direction of data analysis of this research, ratio statistics value is put to practical use to fit into the peculiarities of approximate estimate of each work trade on the basis of actual data amount of materials of historical cases. In addition, the construction phase is connected through the result of a approximate estimate sorted by elements, details work trade.

본 연구는 만 19세에서 30 세 사이의 성인 93명을 대상으로 굴절이상을 측정한 후 사위， 폭주， 개산 그리고 조절 등에 대해 조사하였다. 본 연구에서 조사해본 결과 원방， 근방에서 대부분 외사위(원방 :67% ， 근방 :81%) 가 있음을 알 수 였었으며 내사위일 때 폭주력은 원방에서 17.71 L",., 근방에서 28.29 L"，. 으 로， 외사위일 때의 원방 15.67 L",., 근방 22 .45 L"，. 보다 크게 조사되었다. 그러나 개산력은 이와 반대로 내사위일 때보다 외사위일 때가 더 크게 조사되었다. 상대 조절력에서는 외사위일 때 설성 상대 조절력이 더 크게 나왔으며， 허성 상대 조절력에서는 내사위 가 더 크게 검출되었다.