Xiaochen Duan

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
The inaccuracy of cost estimation in feasibility study and design stage is one of main reasons that make investment of railway construction projects out of control in China. In those two stages cost estimations are affected by many uncertain factors, and the relationship among them is nonlinear and traditional model is hard to solve them. This paper applies(More)
In this paper, environment protection investment measurement of construction projects are discussed, aiming at providing decision support for estimating accurately on environment protection investment of construction projects. An example of highway construction project is settled to study the measurement and analysis technique of the whole life(More)
Data envelopment analysis (DEA) is a non-parametric method for evaluating the relative efficiency of decision-making units (DMUs) with multiple inputs and multiple outputs. Unascertained math is a useful tool for dealing with unascertained information. The unascertained theory was introduced to data envelopment analysis in this paper. A new model, which is(More)
This document specifies the payload format for packetization of Global System for Mobile Communications Half Rate (GSM-HR) speech codec data into the Real-time Transport Protocol (RTP). The payload format supports transmission of multiple frames per payload and packet loss robustness methods using redundancy. Information about the current status of this(More)
  • 1