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你再怎么强大,也会被人鄙视,可是你必须要强大,否则你会被更多的人鄙视。你再怎么无能,也有人视你如珍宝,可是你不能一直无能,否则你会辜负他们对你的好。
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手机蓝光不仅伤害眼睛:还有可能增加抑郁几率 有人做过这样的统计:每天长达五六个小时盯着手机看,相当于把一生中太阳光对我们眼睛辐射的蓝光,在几年之中全部让眼睛承受。而这样的后果也是严重的:过度的蓝光辐射,会造成近视;还有可能引发视觉模糊,导致视觉疲劳;激发褐色色素使皮肤产生雀斑;甚至还有可能导致失明。 蓝光对人身体的危害一直被人反复提及,劝青少年少玩手机类电子产品的做法是正确的。值得警惕的是,最近有研究表明,蓝光不仅对人身体有危害,对人情绪也有影响,蓝光有可能提升抑郁几率。 近期,韩国崇信女子大学研究人员发表在美国的《睡眠》期刊上的一项研究表明,睡前看手机推迟睡眠时间,影响心理健康,更易患上抑郁和焦虑症。而其中的“凶手”很有可能就是黑夜里手机发出的光。 该研究调查了160个年龄在20岁到30岁之间的人,睡前玩手机的时间是普通人5倍。结果表明,睡前长时间看手机会对健康和心理产生消极影响,使抑郁几率上升20%,焦虑几率上升14%,而推迟睡觉时间会让失眠几率上升41%。 此前有人认为,节律或睡眠的紊乱,有可能会导致抑郁几率的提升。很有可能“元凶”是手机蓝光。 据中国科学技术大学薛天教授和合肥学院赵欢团队的一项研究成果证明,造成抑郁样行为的是夜间不正常光线,夜间蓝光光照增加会影响大脑特定的神经环路,导致抑郁症状出现。 他们拿小白鼠做了这样一个实验:在小鼠的昼夜节律中选择每晚21:00-23:00之间的两个小时,连续三周使用蓝光照射它们。 结果发现,小鼠的昼夜节律没有被改变,但渐渐出现了一些异样的行为:当被迫游泳时表现出一副爱动不动的放弃状态,面对糖水偏嗜度下降了。由于这些行为与人类抑郁行为有一定相似性,研究人员将其定义为抑郁样行为。 不仅如此,取消每晚的蓝光照射后,小鼠也没有马上恢复,抑郁样行为仍然持续了长达3周的时间。 这一研究提出了基于模式动物研究的神经科学证据,“蓝光”成为导致抑郁的重大嫌疑;同时首次诠释了光在白昼和夜晚截然相反的情绪作用的内在机理。 不过,作者在论文总结中说,要认识夜间增加的光照对情绪有什么影响,找出夜间光照影响大脑的神经通路是第一步。如果光照在人体中激活的是相同的神经环路,这些结果也许有助于解释过度夜间光照如何影响人类,为何与抑郁症状相关。 当然,这项研究并不是说“睡前玩手机就会抑郁”,导致抑郁的原因很多,而且不是单独起作用的。研究的目的无非就是想要告诉人们,过度的玩手机会影响人的身体健康与情绪好坏。 如今,手机、平板、电脑早已充斥我们的生活,除了白天工作与各类电子产品相伴之外,夜晚灯照、手机、电视等同样占据我们的眼睛。在“蓝光”无处不在的环境中,适度的远离蓝光辐射,对身体健康有益,对精神情绪有益。
手机蓝光不仅伤害眼睛:还有可能增加抑郁几率 有人做过这样的统计:每天长达五六个小时盯着手机看,相当于把一生中太阳光对我们眼睛辐射的蓝光,在几年之中全部让眼睛承受。而这样的后果也是严重的:过度的蓝光辐射,会造成近视;还有可能引发视觉模糊,导致视觉疲劳;激发褐色色素使皮肤产生雀斑;甚至还有可能导致失明。 蓝光对人身体的危害一直被人反复提及,劝青少年少玩手机类电子产品的做法是正确的。值得警惕的是,最近有研究表明,蓝光不仅对人身体有危害,对人情绪也有影响,蓝光有可能提升抑郁几率。 近期,韩国崇信女子大学研究人员发表在美国的《睡眠》期刊上的一项研究表明,睡前看手机推迟睡眠时间,影响心理健康,更易患上抑郁和焦虑症。而其中的“凶手”很有可能就是黑夜里手机发出的光。 该研究调查了160个年龄在20岁到30岁之间的人,睡前玩手机的时间是普通人5倍。结果表明,睡前长时间看手机会对健康和心理产生消极影响,使抑郁几率上升20%,焦虑几率上升14%,而推迟睡觉时间会让失眠几率上升41%。 此前有人认为,节律或睡眠的紊乱,有可能会导致抑郁几率的提升。很有可能“元凶”是手机蓝光。 据中国科学技术大学薛天教授和合肥学院赵欢团队的一项研究成果证明,造成抑郁样行为的是夜间不正常光线,夜间蓝光光照增加会影响大脑特定的神经环路,导致抑郁症状出现。 他们拿小白鼠做了这样一个实验:在小鼠的昼夜节律中选择每晚21:00-23:00之间的两个小时,连续三周使用蓝光照射它们。 结果发现,小鼠的昼夜节律没有被改变,但渐渐出现了一些异样的行为:当被迫游泳时表现出一副爱动不动的放弃状态,面对糖水偏嗜度下降了。由于这些行为与人类抑郁行为有一定相似性,研究人员将其定义为抑郁样行为。 不仅如此,取消每晚的蓝光照射后,小鼠也没有马上恢复,抑郁样行为仍然持续了长达3周的时间。 这一研究提出了基于模式动物研究的神经科学证据,“蓝光”成为导致抑郁的重大嫌疑;同时首次诠释了光在白昼和夜晚截然相反的情绪作用的内在机理。 不过,作者在论文总结中说,要认识夜间增加的光照对情绪有什么影响,找出夜间光照影响大脑的神经通路是第一步。如果光照在人体中激活的是相同的神经环路,这些结果也许有助于解释过度夜间光照如何影响人类,为何与抑郁症状相关。 当然,这项研究并不是说“睡前玩手机就会抑郁”,导致抑郁的原因很多,而且不是单独起作用的。研究的目的无非就是想要告诉人们,过度的玩手机会影响人的身体健康与情绪好坏。 如今,手机、平板、电脑早已充斥我们的生活,除了白天工作与各类电子产品相伴之外,夜晚灯照、手机、电视等同样占据我们的眼睛。在“蓝光”无处不在的环境中,适度的远离蓝光辐射,对身体健康有益,对精神情绪有益。
say something have you ever been in an elevator only to realize you have nothing to say when your boss steps in? before you hyperventilate even thinking about it,take into consideration these tips to become more conversational. most opportunities spark from conversation. it's a free investment.you'll be recognized for taking the time to chat with that person. and a study from the university of michigan showed that social interactions boost problem-solving skills by forcing you to read people's minds and take their perspective. first look for someone approachable,start with a smile and introduction,this puts everyone at ease. communications expert says to remeber the acronym are:anchor,find something you have in common.this can be something you've experienced or something you're both experiencing in that moment. reveal,say something about yourself that relates to your anchor topic creating trust and providing something for them to respond to. encourage,this is your time to ask a question pumping them to respond.keep your questions open-ended.this allows for a more in-depth conversation.if you're stumped for a topic,stick to easy ones like their job,hobbies,and family. but always remember:stay away from controversial topics like politics. a compliment works well too. just be sure to transition the conversation afterward,some people don't know how to handle them.using the person's name in conversation will also yield good results. people appreciate the special attention and remember to listen.people love to talk about themselves.restate what you hear to show you are listening,now is not the time to be shy.get in that elevator,smile and make small talk.
时间 time and space are modes by which we think and not conditions by which we live--albert einstein what is time? the earliest time measurements were observations of cycles of the natural world,using patterns of changes from day to night and season to season to build calendars. more precise time-keeping,like sundials and mechanical clocks,eventually came along to put time in more convenient boxes. but what exactly is it that we're measuring? is time something that physically exists,or is it just in our heads? at first the answer seems obvious-of course time exists,it constantly unfolds all around us,and it's hard to imagine the universe without it. but our understanding of time started getting complicated thanks to einstein. his theory of relativity tells us that time passes for everyone,but doesn't always pass at the same rate for people in different situations,like those travelling close to the speed of light or orbiting a supermassive black hole. einstein resolved the malleability of time by combining it with space to define space-time,which can bend,but behaves in consistent,predictable ways. einstein's theory seemed to confirm that time is woven into the very fabric of the universe. but there's a big question it didn't fully resolve:why is it we can move through space in any direction,but through time in only one? no matter what we do,the past is always,stubbornly,behind us. this is called the arrow of time. when a drop of food coloring is dropped into a glass of water,we instinctively know that the coloring will drift out from the drop,eventually filling the glass.
stay at home this woman is being scolded for being outside without a face mask and was chased back into her home. those playing cards down there,please disperse now. these people are being admonished for hanging out in a group. they were all caught by uk authorities who have been deploying drones equipped with high-resolution cameras and loudspeakers. do not go out and party. it is one part of uk's massive surv strategy to tackle the spread of the coronavirus,which has reached just about every region in the country. the virus has infected more than 30000 in uk,resulting in the deaths of more than 200 people in the country,far surpassing the death toll from sa. the difference between 2000 and 2020,you know,is really enormous in terms of the gov's reliance on and development of surv technology. almost none of these tools were on offer at that time. he says during this public health crisis,uk is embarking on an unprecedented use of surv by using big data and its citizens. so what exactly is uk's surv strategy and can it work to battle the epidemic? this auntie possibly isn't wearing a mask. there are an estimated more than 200 million surv cameras in uk and authorities are using them to monitor citizens. many of the surv cameras in use in uk now are equipped with facial recognition capabilites which simply gives the authorities the ability to track who specifically has gone to which precise location. combine that with data scraped from hospital records,and public transportation history. all that is stored and linked to national id cards,which gives the gov granular information about all its citizens.
科大讯飞彩色电子墨水屏阅读器售价1488元,将于4月24日10点开抢 据悉,科大讯飞彩色电子阅读器的屏幕采用了全球电子纸领导厂商E ink元太科技在去年刚刚推出的印刷式彩色电子纸,是目前体验最成熟、出色的彩色电子纸。 其配备6英寸高清屏,可以显示4096种色彩。外观采用纯平设计,抗震防摔,并配置了24级阅读灯和一体化扬声器。重150克、厚6.9毫米、轻薄舒适、单手可握,可以轻松放入口袋或随身包。适合用于儿童绘本、漫画图册以及带图解书籍的阅读。 事实上,彩色电子纸并非近几年的新生事物,早在2002年市面上便已经有了商用彩色电子纸,而一直未能量产的原因主要在于其色彩还原能力有限、可视角度小、刷新率低(翻页速度慢)。 为了让新技术真正实用,科大讯飞对彩色电子墨水屏做了一系列的优化:提升色彩饱和度,针对彩色模式和黑白模式分辨率不同(分别为300PPI和212PPI)的问题,优化了显示模式切换算法,提升了其过渡的平滑度。针对于彩色屏幕反光率较低的问题,在24级前光灯的基础上,设计了匀光算法,以达到色彩还原与亮度柔和之间的平衡。 此外还实现了Regal刷新、以及独家的动态对比度算法。如此调校后的彩色电子墨水阅读器,色彩相对更为饱和、显示更加锐利、翻页更加平滑,带来了畅快的彩色阅读新体验。
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