Structural change plays an important role in developing any economy, so understanding it is critical to make policies that increase total factor productivity. The structural change that leads to an efficient resource allocation after trade reforms is desirable; the key factor that can affect the relation of "structural change and trade liberalization" with productivity is the quality of institu...

We survey the set of all prior two-party certificateless key agreement protocols available in the literature at the time of this work. We find that all of the protocols exhibit vulnerabilities of varying severity, ranging from lack of resistance to leakage of ephemeral keys up to (in one case) a man-in-the-middle attack. Many of the protocols admit keycompromise impersonation attacks despite cl...

the acupuncture is a safe medical treatment method. regarding to an absence of adverse effects, this method is considered as the best interventions in smoke cession and relieving the threatening pains. churchill mentioned that most people watched some tv movies related to using of acupuncture in anesthetizing the surgical patients some people experienced acupuncture by themselves or relatives. ...