Retesting Penman, Richardson and Tuna’s theories

Introduction In this article we will use the UK's evidence to re-test the theories and assumptions of Penman, Richardson, and Tuna and try to find out if the data of UK listed companies can support those theories . In this article I will explain some of Piotroski's arguments. Accounting systems are also considered to be an important factor affecting test results. Methodological correlation The basic correlation correlation table is the basic way to show whether the B / M effect is significant and the relationship between various variables and future revenue.

However, Richardson et al. 1) West Western Atlantic Ocean Bluefin Tuna living on the slopes of the Central Atlantic and New England Mainland, 2) This new sampled area is actually a major spawning area of ​​the western region, which is a major new discovery. 3) Western Atlantic bluefin tuna spawn at a much younger age than people think; 4) Therefore, Western Atlantic Bluefin Tuna is less susceptible to fishing pressure than currently thought. Their only problem is that their data does not support claims 2 to 4 at all. The first discovery was interesting and previously the larvae of bluefin tuna were not sampled. However, even if we accept all of the author's previous claims, the influence on the vulnerability of the fishing is opposite to the author's conclusion. Their argument suggests that the authors are biased towards finding ways to prove higher capture. But even for their own papers, there is no such reason. started

For decades, researchers knew that bluefin tuna lay eggs outside the Gulf of Mexico on the American Atlantic coast (We all know, but the Richardson team ignores this ). Previous researchers have discovered larvae of bluefin tuna from the Strait of Florida to Carolina (Lamkin et al., 2014). The only reliable discovery of the Richardson team was that larvae bluefin tuna existed in areas that were not previously sampled. However, larvae do not always lay eggs. Gulf stream can transport newly discovered larvae from the previously reported southern region (probably near Hatteras). So the exact origins are not clear, but they found a larva there.

Their initial claim was that the Atlantic bluefin tuna was produced in the Central Atlantic and the New England Continental slope (they are called slopes). Richardson team said, "Contrary to the current assumption that the Gulf of Mexico and the Mediterranean are unique spawning grounds, it shows clear evidence that the Atlantic bluefin tuna lay eggs on slopes." For decades, researchers knew that bluefin tuna lay eggs outside the Gulf of Mexico on the American Atlantic coast (We all know, but the Richardson team ignores this ). Previous researchers have discovered larvae of bluefin tuna from the Strait of Florida to Carolina (Lamkin et al., 2014). The only reliable discovery of the Richardson team was that larvae bluefin tuna existed in areas that were not previously sampled. However, larvae do not necessarily lay eggs there.