نتایج جستجو برای: cross section data
تعداد نتایج: 2848644 فیلتر نتایج به سال:
This paper presents improvements in flow detection by electrical cross-correlation spectroscopy. This new technique detects molecular number fluctuations of electrochemically active analyte molecules as they are transported by liquid flow through a nanochannel. The fluctuations are used as a marker of liquid flow as their time of flight in between two consecutive transducers is determined, ther...
Spurious regression is a serious problem in empirical research when time series has unit roots. This problem might exist when we apply a regression procedure for pooling time series and cross-section data. There are several models to pool time series and cross-section data in regression context, e.g. fixed effect or random effect model. Recently, Entorf [1997] and Kao [1999] also pointed out th...
Traditionally economic panels had large number of cross-section units and relatively few time periods and econometric methods were developed for such large N small T data. More recently panels with observations for a large numbers of time periods have become available on cross-section units like rms, industries, regions or countries. These notes explore the econometric methods developed for ...
A cloth simulation system must generate a human body model based on measured data obtained from range data. We propose modeling and deformation methods based on such data. In our system, the human body is modeled by layered metaballs which correspond to the horizontal cross section of the body. For each cross section, metaballs are generated by measured sample points on the boundary of the cros...
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