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Incomplete data are common problems in longitudinal studies. For incomplete longitudinal binary data, Fitzmaurice et al. (2001) discussed the impact on bias of the different estimating equation approaches where incompleteness follows a MAR (missing at random) process. They pointed out that GEE (generalized estimating equations) method proposed by Liang and Zeger (1986) has manifest bias as MAR drop-out...
The synergy of supply chain or its efficiency can be analyzed through the measurement of supply chain synergy, and they can also be improved accordingly and be considered as an indicator of the synergetic capacity of the supply chain. After going through present literatures related to synergy measurement, the supply chain synergy measurement model is put forward on the foundation of the relational...
For existing bridges, maintenance activities are important for bridge safety and management. However, the implements of maintenance activities cause traffic jams, detours, and thus tremendous user costs. In order to reduce user costs resulted from maintenance activities as well as to maintain bridge elements in good statuses, this paper proposes a concept of bridge elements concurrent maintenance...
The rainfall intensity of annual typhoon is high in Taiwan. It often result in the downstream flooding and losses of economics. Thus, simulation model of rainfall-runoff is an very important subject . In past research, time series model often forecast water level . But time series often have an influence on one time lag for forecasting of data.When reach to peak water level ,the error occurs in the...
The purpose of this paper is to present some empirical findings on the spatial distribution of real estate taxes impacts on housing price in China. The fixed effect regression model was used to estimate this effect with data of the 31 provinces and metropolis in 1998-2006. The fording showed that: (1) real estate taxes had both direct and indirect impact on housing price. The direct effect was real...
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