Wave or Trend

Trend Break or Unit Root in GDP of Iran

It has been suggested that existing estimates of the long-run impact of a surprise move in income may have a substantial upward bias due to the presence of a trend break in 1970s (1350s) and 1980s (1360s) gross domestic product (contained oil) data of Iran. This article shows that the statistical evidence does not warrant abandoning the no-trend-break null hypothesis at the 5% significance leve...

Platelet-rich plasma therapy - future or trend?

Chronic complex musculoskeletal injuries that are slow to heal pose challenges to physicians and researchers alike. Orthobiologics is a relatively newer science that involves application of naturally found materials from biological sources (for example, cell-based therapies), and offers exciting new possibilities to promote and accelerate bone and soft tissue healing. Platelet-rich plasma (PRP)...

Debt Forgiveness: Dangerous Trend or Absolute Necessity

Malpractice Actions : Emerging Trend or Aberration ?

OGY,” the Technical Advisory Service for Attorneys (TASA) Web site lists more than 9,500 categories of experts. Large accounting firms and other forensic firms perform litigation support services. And the Martindale-Hubbell directory contains more than 4,000 experts, services, suppliers, and consultants. In just a few decades, expert witnesses in litigation have gone from a rarity to the common...

Photoelectron wave function in photoionization: plane wave or Coulomb wave?

The calculation of absolute total cross sections requires accurate wave functions of the photoelectron and of the initial and final states of the system. The essential information contained in the latter two can be condensed into a Dyson orbital. We employ correlated Dyson orbitals and test approximate treatments of the photoelectron wave function, that is, plane and Coulomb waves, by comparing...