徐州三维彩超与四维彩超(徐州二十三周做四维早吗) (今日更新中)

UNION CITY, Calif. (AP) — Two boys were fatally shot while sitting in a van outside an elementary school early Saturday morning, police said.The shootings of the boys, ages 11 and 14, took place in the parking lot of Searles Elementary School, the East Bay Times reported.Callers to 911 reported hearing gunfire at 1:26 a.m., the newspaper said. Authorities said that when officers arrived, they found the boys.The older boy died at the scene, and the younger child died en route to a trauma center, the Times reported.New Haven Unified School District Superintendent John Thompson said in a statement that the victims were minors.The boys attended schools in the district, Thompson and a district spokesman said.No arrests have been made in connection with the killings.Police Lt. Steve Mendez said there was no sign of a connection between the shooting and the school where it took place. People occasionally gather in the relatively secluded parking lot, Mendez told the Times.Thompson said the school district “will have support for our students and staff at the sites where these students attended when school resumes after the Thanksgiving break.”The district also will work with the Union City Police Department “to ensure that our schools are as safe as they can be,” he said.Police are investigating the possibility that an earlier shooting may be related to the slayings, the Times reported. About 12:30 a.m. on Nov. 20, two men were shot and wounded near an intersection in Union City.The men were treated at a local hospital and released. Police told the newspaper that no evidence so far has linked the two incidents. 1638

Twitter CEO Jack Dorsey says "we're ready to question everything" about the social networking site that has been overrun by spam, abuse and misinformation.Dorsey says he and his team are working extensively behind the scenes to stamp out some of the harassment and hate speech that has generated bad headlines lately.But it is a long-term effort, he says, and he is reluctant to commit to an exact timetable for certain changes to Twitter's foundation.In twelve years, "we've changed a lot. But we haven't changed the underlying fundamentals," Dorsey told CNN in an in-depth interview at the company's headquarters on Friday.The basic fundamentals are what he is examining now. For instance: What does Twitter incentivize its users to do?"Every product decision we make is 'telling' them to do something," Dorsey said.So he is thinking about how to help users follow topics and hashtags, not just people."We are aware of some of the silos and how we're isolating people by only giving them crude tools to follow accounts. We need to broaden our thinking and get more back to an interest-based network," he said.Related: Twitter's Jack Dorsey: 'We are not' discriminating against any political viewpointDorsey is also rethinking how follower counts and "likes" on posts are displayed, because the race to gain followers and likes may encourage outrageous behavior.His view is that Twitter needs to be much more "transparent" and open about its actions. But that transparency, some of which was on display during Dorsey's media tour this month, means asking questions without actually answering them.Among the questions Dorsey asked in the CNN interview: "How do we earn peoples' trust?" and "How do we guide people back to healthy conversation?"While he may get credit for asking big, philosophical questions about how his site operates, Dorsey remains vulnerable to criticism about Twitter's inaction.He responded to that by saying "we are taking a lot more action than we ever have in the past." But much of the action is invisible to users, he asserted.For example: The disabling of bot networks and other suspicious accounts. Dorsey said Twitter challenges "10 million accounts every single week to see if they're automations or humans," and takes action accordingly.But Twitter's stock plunged last month when its quarterly earnings report showed a decline in user growth, which the company attributed to its efforts to clean up the site, akin to gardeners removing weeds.Nonetheless, Dorsey is committed to what he calls "conversational health" -- the quality of an exchange on Twitter -- which he is trying to measure with the help of two research groups. He said investors should take a look at the long-term trends: "We see this as necessary and right and we believe in it and we have conviction around it, and we'll take the hit in the short term."Related: Twitter is purging suspicious accounts from your follower countHe also asserted that "over the short term, a lot of this work is invisible, and over the long term, it starts to add up."As for some of the specific changes, like a rethinking of the like button, Dorsey was reluctant to talk about a timeline."We're looking and thinking about all these things right now," he said. So: By the end of the year? "I worry about a time frame like that," he said, "because we also need to take into consideration -- we're a small company. I mean we, in comparison with our peers, we're a small company, but we have this outsized impact and I believe, importance."Later, he added, "We have to understand first the problem we're trying to solve, like what incentives we actually want to drive; not just what we want to remove, but what we want to drive." But he said he knows he wants incentives "that encourage people to talk and to have healthy conversation." 3824

United Airlines is looking to add flights to their schedule in October, including resuming previously canceled trips and adding new ones.According to the airline, this will bring them up to flying 40 percent of their full schedule in October compared to October 2019. In September, they are only expecting to fly 34 percent of their full schedule.The news comes a week after the airline announced it will furlough more than 16,000 employees in October. That’s when federal bailout money from the federal government expires.The resumed flights include eight routes to Hawaii, “pending approval of the state’s pre-arrival COVID testing program.” Hawaii recently extended their out-of-state visitors ban to October 1. Once they allow visitors and tourists again, travelers must fill out a “safe travels” form and go through pandemic screening measures."We continue to be data-driven and realistic in our approach to rebuilding our network," Ankit Gupta, United's vice president of Domestic Network Planning said in a press release. "Because October is typically a slower month for leisure travel, we're adjusting our schedules to reflect these seasonal changes in customer demand while resuming service or adding capacity on routes where we're seeing increased customer demand for travel."Some of those “data-driven” decisions may have led United to realign their schedule to match “current demand for leisure travel.” The airline says in October they will add more flights on days popular with leisure travelers looking for a long weekend getaway, and will schedule fewer flights on days where demand is lower.Other changes and additions in October include:Resuming or starting new service on nearly 50 routes in the US; mostly from United’s hubs in Chicago, Denver and Houston.Resuming additional service to Florida and along the west coast.Resuming service to 14 international destinations, including parts of South America and Mexico.United was one of the airlines last week who announced they will be permanently eliminating change fees on flights within the US. Starting next year, they are also expanding their standby options. 2139

VALLEY CENTER, Calif. (KGTV) — A week after a cancellation of a holiday tradition at a cemetery in Valley Center, a community wrapped up their campaign to save Christmas for many military families.Because of COVID-related issues, the nonprofit that places more than 300 Christmas wreaths at military grave markers at Valley Center Cemetery announced Friday it wouldn't be able to this year."I just felt defeated ... My heart dropped," said Jenelle Brinemann.Brinemann, a local florist, decided to post on Facebook a call for donations to make wreath sprays, a smaller version of wreaths."It shows we have Christmas spirit still, even during this hard time," said Brinemann.A day later, her driveway was filled was with donated cedar, pine, and ribbons. More than 50 volunteers signed up to help assemble. Kids sent messages to attach to the sprays and on Wednesday, the project was completed."Great way for the town to come together ... shows there's still love in the world," said Brinemann.Among those who stepped up were members of the Green Knights Military Motorcycle Club, who saw our story on the wreath campaign, and volunteered their services.On this day, they escorted the volunteers to the cemetery."We felt we had to help them, because it was the right thing to do. We have to honor our veterans that have gone before us," said club member Tyler Nelson."It was overwhelming. The whole neighborhood turned out, cheering. They had posters. Best Christmas present someone could receive," said Brinemann.At the cemetery, Brinemann and seven others quietly placed the wreath sprays at 311 grave markers."The cemetery just looks like how it should be now," said Brinemann. 1686

Two soldiers were killed in an Army AH-64E Apache helicopter crash at the local training area of their base in Fort Campbell, Kentucky, Friday night, a statement from the 101st Airborne Division said.The accident happened at about 9:50 p.m. local time Friday evening and involved two soldiers from the 101st Combat Aviation Brigade, the statement said.The crew was conducting routine training when the accident occurred and there were no other casualties, it said. The cause of the accident is under investigation, the Army said.The Army is not releasing the names of the deceased pending notification of the next of kin. 629

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