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Historians Figure Out How Ancient Sailors Navigated Mediterranean By Building One of Their Ships_我的网站

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A |     What better way to figure out a mystery of the ancients than to try it out yourself? That’s what one sailing aficionado from Israel did when confronted with a puzzle from the Christian Bible.,David Gal, a doctoral student in the Department of Maritime Civilizations at the University of Haifa, says he has figured out why the Christian Apostle Paul sailed from Judea to Rome along the southern coast of Anatolia in 60 CE - a route that, to him, wasn’t the most obvious one, since most winds in the Mediterranean are westerlies and Paul was going west.,That year, Paul was sent to the imperial capital to answer to Jewish authorities for preaching the teachings of Jesus of Nazareth, who claimed to have been the Jewish messiah. Most Jews did not accept Jesus’ teachings, and he was tried and executed by crucifixion for blasphemy and subversion in either 30 or 33 CE.,Paul’s journey is recounted in unusual detail in the New Testament book of Acts. The preacher zigzagged his way across the sea, swinging north of Cyprus before heading to the city of Myra (modern Demre) in southern Anatolia. From there, he went west past Rhodes, to Knidos, then south to the southern coast of Crete and west across the southernmost parts of the Ionian Sea. However, he was shipwrecked in Malta and his journey took much longer than anticipated.,“Until recently, we didn’t understand why the Alexandrian grain ship that Paul joined in southern Anatolia, bound for Rome, chose that particular route,” Gal told Haaretz.,The boat, Ma’agan Mikhael II, is a replica of a ship found in 1985 about 2 meters underneath the seabed off the coast of Kibbutz Ma’agan Mikhael in northern Israel, not far from Caesarea. In ancient times, the city was known as Caesarea Maritima or Caesarea Palestine, named after the Roman emperor Augustus Caesar. The replica boat was finished in 2016 and is just one of two ships in the world that simulates a merchant sailing vessel from Before the Common Era (BCE).,By coincidence, Caesarea also happens to be the port from which Paul left on his trip to Rome.,In part, Gal’s study was based on computer modeling, which combined vast amounts of weather data and conducted 5,479 virtual sailing trips along 224 different possible routes from Caesarea to Rome, for a total of 1.2 million virtual sailing trips. However, that wasn’t enough: Gal also took a crew of 10 volunteer sailors out in the Ma’agan Mikhael II to explore the intangible human element of the journey. With just one sail, the ship moves along at a brisk 3.9 miles per hour.,“Only when we sailed on Ma’agan Mikhael II did we understand the real limitations of the ship and the sailors,” Gal told Haaretz. “We found that in many sections of the coast, the breeze doesn’t support this type of movement.”,“They didn’t sail counter to the prevailing wind, but waited for days with a favorable wind in the opposite direction,” Gal concluded. “We found there were such days in a large meteorological sampling. Until now, scholars didn’t examine that but used low-resolution meteorological averages that erase the variance in the wind.”,Gal said he has taken the ship out more than 80 times, sailing as far as Cyprus, and found that the daily wind patterns, in which breezes can blow westward from the Levantine coast, have remained strong after 3,000 years. By navigating those patterns, ancient sailors could have crept up the coast until they found more favorable winds.,“We have data about its performance in all wind conditions and how various currents affect it, and that enables us to conduct a reliable simulation of sailing. With its help, we acquired insights into the way such a ship is operated; we had a better understanding of how four people can sail from Greece to here and back,” he said.。    

As physicians who care for children and families, our mission is to keep our patients healthy and help them thrive.
With many students heading back to school soon (and some having already started classes), we know all too well what it’s like for families to navigate this changing season – and importantly, to try to stay healthy. Along with the excitement and energy that each new school year brings, this is also a time of exposure to all the viruses that we typically see during the colder months. This year, that includes colds, the flu, respiratory syncytial virus (or RSV) and COVID-19.
As families prepare for the year ahead, it’s important that children’s immune systems are also prepared to detect and resist viruses so that they can stay healthy and thrive. Just like how software updates to your phone or computer keep things in working order, vaccines help your body’s immune system work better. We also know that when everyone can access recommended immunizations on time, it stops preventable diseases from spreading through our communities.
Vaccines are one of the greatest medical advances in history. Thanks to widespread immunization, we have eradicated or controlled many diseases that once caused pain, suffering and even death for countless children – from smallpox and polio to tetanus and measles. Plus, when children stay healthy and free of such debilitating diseases, they can succeed by staying in school and safely participating in activities like sports and other after-school programs. This continuity helps improve children’s social and emotional development and their entire quality of life.
Unfortunately, parents must currently try to find guidance about their child’s health in a sea of mis- and disinformation. In the age of social media, misinformation about many topics is rampant, and vaccines are no exception. We encourage everyone to seek information from a trusted source, like their family physician or pediatrician – the same way that we work together with parents to offer guidance on other important topics like healthy nutrition, injury prevention and so much more.
At that same time, we do need better ways to talk about vaccines, along with ways to help parents identify accurate sources of information that they can trust. We must also ensure that vaccines are widely available, easy to find and affordable to everyone.
Right now, the U.S. is lagging behind. In 2022, only 45.9% of children received a flu shot, down from 53.1% in 2019, according to data from the Centers for Disease Control and Prevention. This is compounded by research that showed a two-year decline in children receiving routine vaccinations during the COVID-19 pandemic.
Also concerning is CDC research showing that 8% of children had not had a well-child checkup within the last year – and that 6% didn’t have a doctor’s visit at all. A recent UNICEF report also shows 67 million children across the world missed out on one or more vaccinations over the last three years. These children are missing opportunities for immunizations as well as vital guidance on mental health, nutrition and other areas of child health and development.
These statistics are even more reason for parents, physicians and policymakers to ramp up vaccine education and ensure that children and their families can access vaccines and other routine medical care.
As physicians who care for families and who watch children grow up over many years, pediatricians and family physicians are well-positioned to help patients and their parents navigate challenges in getting vaccines. In addition to helping overcome barriers like lack of insurance or transportation, we can also serve as sources of accurate information. We can be a backstop against the rampant misinformation parents encounter in social media and a sounding board for their questions.
But physicians cannot do this alone. Policymakers must recognize the need to help families who qualify stay enrolled in Medicaid and to protect programs like the Children’s Health Insurance Program, which offers coverage for those who might not be eligible for Medicaid. We must expand the number of hospitals and clinicians who participate in the federally funded Vaccines for Children program, which today offers vaccines to nearly half the nation’s children. This program is critical because it helps ensure vaccine and health equity. And we must also ensure that physicians have the support they need to continue physically storing, administering and counseling families on vaccines.
In the end, we all share a collective responsibility to safeguard the health of our nation’s children and the health of the public. As your doctors, we know that we are all healthier when everyone is vaccinated.

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Published on:12:53:17


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