BACKGROUND Willingness to pay (WTP) surveys have proven to be useful tools in determining patient preferences though relatively few pediatric studies have utilized them. Studies in the adult surgical population have used such methods to assess patients' perspectives regarding the avoidance of anesthesia side effects or outcomes. The purpose of this survey was to assess parental preferences, usi...

We now know that from a functional standpoint, jointly determined ecological–economic systems (ecosystems) cycle over time. However, because this recognition has been recent, the ecological economics literature contains very few formal studies of the management of cyclical ecosystems. Consequently, the objective of this paper is to use renewal theory to examine two ways of analyzing the optimal...

The hypothesis that the many non-specific changes normally associated with cyclical ovarian activity are the primary aetiological factors in the premenstrual syndrome was tested by suppressing ovulation with subcutaneous oestradiol implants. Sixty eight women with proved premenstrual syndrome were treated under placebo controlled conditions for up to 10 months in a longitudinal study. Active tr...

Cyclical vomiting syndrome is a paroxysmal, condition characterized by recurrent severe episodes of vomiting lasting for hours to days, with variable intervals of normal health in between with no apparent cause of the vomiting. We hereby report a 10 yr old girl with cyclical vomiting syndrome with multiple, bisynchronous occipitally predominant, bilateral epileptiform discharges representing a ...

We use individual-level data to show that divorce is pro-cyclical on average, a finding robust to the inclusion of a wide range of controls. Pro-cyclical divorce is concentrated among women who married young and/or do not have a college degree.

Most research on the persistence of profits models their evolution as a first-order autoregressive process. We present an alternative framework using structural time series analysis, decomposing the overall series into trend, autoregressive, cyclical and irregular components. A persistence-of-profits taxonomy is introduced, based on the level and slope of the long run trend in the final vector ...

The cardiac component of cardio-respiratory polysomnography is covered by ECG and heart rate recordings. However, their evaluation is often underrepresented in summarizing reports. As complements to EEG, EOG, and EMG, these signals provide diagnostic information for autonomic nervous activity during sleep. This review presents major methodological developments in sleep research regarding heart ...

the aim of this study was to determine the monthly dtr mass load of amphetamine-type compounds in poland as well as an investigation of cyclical behaviour by using time series analysis and especially trends analysis.amphetamine, methamphetamine and mdma (ecstasy) were detected in wastewater samples collected from the main wastewater treatment plant in the city of poznan using liquid chromatogra...

Research of the past decade showed that transcriptional regulation could be a highly dynamic and cyclical process. Many transcription factors and their co-regulators cyclically associate with a periodicity of 30-75 min with regulatory chromatin regions resulting in dynamically changing chromatin marks and cyclical activities of RNA polymerase II in mRNA synthesis.

Uncouplers are molecules with protonophoric and ionophoric capabilities that mediate coupled cyclical transport of cations--a transport that takes precedence over all other coupled processes. Uncouplers form cation-containing complexes with electrogenic ionophores that potentiate cyclical transport of cations. The molecular mechanism of uncoupling sheds strong light on the mechanism of coupling.