Sleep related groaning, also called catathrenia, causes you to groan vocally while you sleep. Sleep related groaning is a long-lasting disorder that often occurs nightly. The groaning sound is usually quite loud. Your breathing becomes unusually slow during a groaning episode. You take in a slow, deep breath.
The Gini coefficient (or Gini ratio) is a summary statistic of the Lorenz curve and a measure of inequality in a population.he Gini coefficient (or Gini ratio) is a summary statistic of the Lorenz curve and a measure of inequality in a population.
The Gini coefficient is used in this study to measure seasonal concentration of demand for. tourism in Norway on an annual basis between 1999 and 2011 therefore providing an. understanding of the seasonal concentration of demand for tourism in Norway during the most. recent year and how it has changed over time.