As demands to maintain the global food production continue to mount, multinational seed companies are turning to new DNA marker technologies to accelerate the rate of plant breeding and crop ...

Recently developed two-stage estimation methods of sample selection models are used, in the context of data from the 1989 Labor Market Activity Survey, to examine labor supply decisions and wage ...

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

Sampling is a technique in which samples are drawn at random (without any favor or bias). For this, suitable measures or procedures may be laid down and adopted according to the nature and ...

Providing samples to customers is an important promotional tool for many businesses, and they are often used to encourage an immediate or future purchase. The way the sample is offered and contributes ...

In any chemical analysis, the most important step is sample preparation. The purity of the sample should be ensured before taking a measurement to obtain the optimum results when using any elemental ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The moon has some ...