Sentence examples for earliest studies was from inspiring English sources

One of the earliest studies was conducted in [4] where the relationship between lower and upper bounds on the mutual information between transmitted and estimated Gaussian symbols is derived by modeling a time-varying frequency-selective channel as a random component with a known mean and a covariance that accounts for the channel estimation error.

The earliest studies were done in Europe a decade ago and found similar widespread, low-level contamination.

The earliest studies were published in 1991, and 31 of the 38 studies have been published since 2007 (Table 1).

The earliest study was published in 1987 [ 17].

The earliest study was published in 1997 22 and the latest was published in 2010.

A non-linear system model, developed in earlier studies, was used in this model-based design.

A noteworthy difference from earlier studies was that plasma levels of MMP-9 were detectable in all participants.

The most frequent hormonal agent given in earlier studies was tamoxifen [ 18, 19, 28].

A third difference to earlier studies was the different physiotherapeutic modalities used.

The focus of these earlier studies was on SM22α and the podocyte [ 32, 34– 34].

The relationship between high level aR and morningness seen in earlier studies was confirmed [ 12].