This study aims to analyze -- (Qris) with the Technology Acceptance Model (TAM) approach which is expanded by adding subjective norms and perceptions of security as exogenous variables. Subjective norms are hypothesized to influence intention to use, either directly or indirectly through endogenous variables in TAM. Meanwhile, the perceived security variable is hypothesized to have a direct effect. Overall the proposed hypothesis forms a research framework in the structural equation model (SEM). Empirical data was obtained through an online survey of 233 respondents who answered 23 complete questionnaire questions. The selection of respondents was determined using a purposive-non-probability sampling approach from active users of the Quick Response Indonesia Standard (Qris) at various banks in East Java whose population size is unknown. The software used to inform that all the indicators used meet the validity and reliability criteria, the research model meets the suitability criteria. The five TAM variables and their extensions have a positive and acceptable effect on intention to use. The biggest influence of the antecedent variables on the intention to use successively is subjective norm, perceived usefulness, attitude, perceived ease of use, and the smallest is perceived security.

Value Engineering is a multidisciplinary-based systematic approach that is carried out creatively,innovatively and systematically to find a functional balance between cost, reliability and performance toachieve the concept of value for money. In value engineering there are six stages. The information stagecarried out 2 analyzes, namely cost breakdown and Pareto diagram analysis, resulting in the largestwork being owned by concrete work with a weight of 37% and a weight of 28% of floor slab work fromthe total concrete work. The function analysis stage produces 1 primary function and 4 secondaryfunctions. The creative stage produces 3 creative ideas, namely the Conventional Method (PA-1),Floordeck and Wiremesh Method (PA-2), and Hollow Core Slab Method (PA-3). The evaluation stageresulted in 2 creative ideas that passed. In the development stage, several calculations are carried outthat support all creative ideas. In the evaluation criteria stage, each alternative choice is assessed withthe help of the Expert Choice application, resulting in a total PA-2 value of 20% greater than PA-1. Thecalculation of the floor slab design results in the serviceability of PA-2 being 12.67% higher than that ofPA-1. PA-1's NPV is 5% greater than PA-2's. The PA-2 index value is 2.17 smaller than PA-1. The use ofPA-2 can save RAB of IDR 101,372,430.00 or 5%.