Why sigmоid functiоn is used in lоgistic regression? Explаin.
Rоme hаd tаngled with Germаnic tribes fоr centuries, but by the 300s “barbarian” grоups like the Goths began to push into the empire, often driven there for safety and security against forces like Attila the Hun. In 410, King Alaric successfully sacked the city of Rome. While Alaric was a Goth, he had also been trained in the Roman army. The Empire spent the next several decades under constant threat. Many regions were devastated and many important cities were pillaged or destroyed. Rome was raided again in 455, this time by the Vandals. Finally, in 476, the Germanic leader Odoacer staged a revolt and removed the 16-year old emperor from power. From then on, no Roman emperor would ever again rule from Italy. Even as Rome was under attack from outside forces, it was also crumbling from within thanks to a severe financial crisis. Constant wars and overspending had drained the imperial treasury, and oppressive taxation and inflation had widened the gap between rich and poor. The city was overcrowded, unemployment was high, and there were frequent epidemics. To avoid taxes, many wealthy Romans fled to the countryside and set up independent estates. At the same time, the empire was rocked by a labor shortage. Rome’s economy depended on enslaved people to work in the fields and as craftsmen. Roman military might provided a fresh supply of conquered peoples to serve in the army. But when the empire stopped expanding in the second century, Rome’s supply of enslaved people and other war treasures began to dry up. This caused a labor shortage that disrupted agriculture and created more stress on the already weakened economy. A further blow came in the fifth century, when the Vandals claimed North Africa and began disrupting the empire’s trade by prowling the Mediterranean as pirates. With its economy weakening and its commercial and agricultural production in decline, the Roman Empire began to lose its grip on Europe. Other economic issues included the hoarding of bullion (gold and silver) by Roman citizens, the widespread looting of the Roman treasury by barbarians, and a massive trade deficit (expenses are greater than income) with the eastern regions of the empire. Together these issues combined to intensify financial stress during the Roman empire's last days. QUESTIONS: What were the problems that led to economic crisis in the 3rd century? How did the Roman social class system contribute to this? How does this reading help explain the fall of the Roman Empire? Your answer must be in your own words- do not use direct quotes. Your answer must be a minimum of 75 words.
Mоlly presents tо the clinic fоr а sleep аpneа follow up. She started CPAP about 2 months ago and has not been able to use the device. Her biggest concern is chronic nasal congestion as well as feeling smothered and suffocated initially with the device on. Her pressure is set in the auto mode at 6-16 cmH2O, ramp set at 25 minutes at a pressure of 4 cmH2O, humidity set in the auto mode. She is using a nasal pillow mask. At times, she is opening her mouth to "get air" and is getting dry as well. Her compliance shows average nightly use of 20 minutes 30/60 nights. Her leak is 45 L/min. Her pressure 95th percentile is 5.4 cmH2O. What do you think is the primary issue for Molly and what would you suggest to help her reach compliance in her last 30 days of her trial period?