1,720,981 research outputs found
First-principles study on variation of lattice parameters of mullite Al4+ 2xSi2− 2xO10− x (x= 0.125, 0.250, 0.375)
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The influence of market forces to construction companies' performance in Indonesia
No full textConstruction industry is one of the sectors that contribute a high GDP for Indonesia\ud
economy at approximately 4-8%. Therefore, it is important for the construction industry to improve its company performance, either private or state-owned, in order to become competitive with foreign construction companies. Construction industry in Indonesia can develop its competitiveness in the international market by establishing improvement steps toward the construction company in order to increase its performance quality. Several factors that affect and determine the success of a construction company are internal factors, external factors and market forces. Market forces are factors which are\ud
uncontrolled by the industrialists, therefore early anticipation is needed. Several problems that occurred in the market forces area in the construction industry are customer satisfaction rate, competition between companies, constraints in capturing market, unbalanced supply and demand, lack of innovation and inaccurate market segmentation. The research objective discussed in this paper is to identify the cause of the problems arise in a construction company’s market forces that influence the company's performance in Indonesia. The methods used are literature studies and survey for identifying the cause of the problems and the construction company's success performance indicators. Analyses used in this research are statistical and cluster analysis. The results show the clusters from the problems arise in market forces that influence the construction company’s performance which consists of profitable, growth, sustainable, and competitiv
IDENTIFICATION OF CONSTRUCTION WASTE IN ROAD & HIGHWAY CONSTRUCTION PROJECTS
No full textABSTRACT: Construction projects are one of the sources of solid waste in the urban area. Various researches in develop countries indicate that contribution of construction waste in the urban area tend to increase. Implementation of construction waste management hierarchy can be an approach to manage and reduce the waste. It is about priority and responsibility of managing waste. It includes waste disposal, waste treatment, waste recycle and reuse, and waste reduction. As initial phase of exploring the management of construction waste in Indonesia, the Department of Civil Engineering, University of Indonesia, has conducted several studies to identify different types of construction waste and their sources. This paper discusses the results of the study on the identification of construction waste in road and highway construction projects in the greater Jakarta area. A questionnaire survey was conducted to identify the types of waste and their sources. The study indicates that excess from soil excavation, timber and reinforcing bars are the most dominant waste produced in highway construction projects. In-efficient operation has been indicated as the main sources of these wastes. The study also shows that lack of management capability is the main factor of the production of construction waste, which is indicated correlation between the waste produced and management aspects related to project duration and labours
A Miniature System for Separating Aerosol Particles and Measuring Mass Concentrations
No full textWe designed and fabricated a new sensing system which consists of two virtual impactors and two quartz-crystal microbalance (QCM) sensors for measuring particle mass concentration and size distribution. The virtual impactors utilized different inertial forces of particles in air flow to classify different particle sizes. They were designed to classify particle diameter, d, into three different ranges: d < 2.28 μm, 2.28 μm ≤ d ≤ 3.20 μm, d > 3.20 μm. The QCM sensors were coated with a hydrogel, which was found to be a reliable adhesive for capturing aerosol particles. The QCM sensor coated with hydrogel was used to measure the mass loading of particles by utilizing its characteristic of resonant frequency shift. An integrated system has been demonstrated
Microcantilever biosensor: sensing platform, surface characterization and multiscale modeling
No full textPersuasive feedback model for inducing energy conservation behaviors of building users based on interaction with a virtual object
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