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時間:2022-08-15 來源:本站 點擊:258次
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UK's Johnson scraps COVID******

AFP

Tourists wearing masks to protect against the spread of coronavirus stand outside Windsor Castle on February 17.

British Prime Minister Boris onMonday said he would end all coronavirus restrictions in Englandincluding mandatory self-isolation for people with COVID-19 andfree testing, drawing skepticism from some scientists andpolitical opponents.

Johnson's "living with COVID" plan has sparked alarm that itis premature and will leave the country vulnerable to new viralvariants, but the government says it has provided more testingthan most other countries, and must now curb the cost.

The plan to ditch the remaining legal restrictions is apriority for many of Johnson's Conservative Party lawmakers,whose discontent over his scandal-ridden leadership hasthreatened his grip on power. Some critics think the plan isalso a bid to divert attention from those scandals.

Britain has reported 160,00 deaths from COVID-19, theseventh-highest death toll in the world.

As Europe retainssocial distancing and vaccine rules, Johnson is moving to repealany pandemic requirements that impinge on personal freedom,saying it is time the public took responsibility.

He will lean even more on the rollout of booster vaccines,with the government offering extra booster doses to the mostvulnerable, as well as other pharmaceuticals interventions suchas antiviral treatments.

"Restrictions pose a heavy toll on our economy, our society,our mental wellbeing and on the life chances of our children,and we do not need to pay that cost any longer," Johnson toldparliament.

"So let us learn to live with this virus and continueprotecting ourselves and others without restricting ourfreedoms."

Johnson said that the legal requirement to self-isolate forpeople who test positive for COVID-19 would be removed on February 24while free universal testing would end on April 1.

The devolved administrations of Scotland, Wales and NorthernIreland have set their own COVID-19 restrictions, but the amountof money they have to spend on testing will flow from decisionsmade by the UK government.

Scotland's First Minister Nicola Sturgeon was scathing onTwitter, writing: "To allow significant dismantling of thetesting infrastructure built up in last two years would beinexcusable negligence given ongoing risks."

'Scale this back'

Johnson said that some surveillance of the coronavirus wouldremain in place, allowing for a rapid response to new variants,which could be quickly scaled up.

But he cited the much-weakened link between COVID-19 casesand deaths due to vaccines, antivirals and the lower severity ofthe Omicron variant as informing his decision.

"It is only because we know Omicron is less severe, thattesting for Omicron on the colossal scale we have been doing ismuch less important and much less valuable in preventing seriousillness," Johnson said.

"This came at a vast cost... We must now scale this back."

Johnson said that symptomatic testing would remain availablefor at-risk groups and social care staff, and would work withretailers to allow anyone who wants to buy tests.

Britain has been unusual in providing free lateral flowtests to people who want to for months. In contrast, USPresident Joe Biden offered limited free rapid tests tohouseholds for the first time last month.

Leaders in Scotland and Wales had criticized Johnson's plansto reduce the availability of testing ahead of the announcement,while leader of the opposition Keir Starmer also said that theplan was ill-conceived.

"We can't turn off Britain's radar before the war is won.'Ignorance is bliss' is not a responsible approach to a deadlyvirus," Labour Party leader Starmer said.

ROG PG259QNR评测:360Hz电竞超精彩!******

  此次笔者将为玩家们介绍一款高端的电竞游戏显示器,它就是ROG Swift 360Hz PG259QNR,中文名叫作“超梦Pro”。这款电竞游戏显示器是ROG Swift 360Hz PG259QN的升级版产品,特别新增了NVIDIA Reflex延迟分析器,配合NVIDIA Reflex低延迟技术使用,可为玩家们带来更沉浸式的游戏体验。

  同时,ROG Swift 360Hz PG259QNR还采用了Fast IPS面板,具备业界顶尖级的360Hz刷新率,并且支持NVIDIA先进的G-Sync技术,单从这些参数以及技术来看,这款电竞游戏显示器的游戏属性已属强大。

  当然,ROG Swift 360Hz PG259QNR的强大主要是建立在NVIDIA技术体系基础之上的。性能强大的NVIDIA GeForce系列显卡,配上这款电竞显示器才合适。

  产品外观欣赏

  ROG Swift 360Hz PG259QNR精选了一块1920×1080分辨率的Fast IPS面板。Fast IPS面板与普通IPS面板相比,液晶分子的排列方式与电极的排布并无本质变化。只是Fast IPS面板中使用了一种快速液晶分子,这种快速液晶分子的偏转速度是普通液晶分子的4倍,从而可以使得采用这一技术的IPS显示器的GTG灰阶响应时间实现真正的1ms。

  同时这款电竞游戏显示器还加持了G-Sync技术。提起G-SYNC显示技术,在PC游戏圈子里称得上无人不知无人不晓。该技术目前普遍应用在高端电竞显示器上面,可通过内建的专属芯片来控制画面的显示速度,进而实现行云流水般的游戏画面,同样是杜绝游戏画面撕裂、卡顿的高科技。

  这款电竞游戏显示器采用了当今非常流行的窄边框设计,它的屏幕上、左、右三面边框设计得均比较的窄,进而让这款显示器实现了较高的屏占比,带来了更好的观感。

  屏幕下边框中央位置设计了ROG的“败家之眼”LOGO。

  屏幕下边框特别采用了防眩光涂层设计,有助于减少屏幕上的反射效果。

  这款电竞游戏显示器不仅支持横向显示,而且还支持竖向显示,以便兼顾一些专业用户的需求。

  电竞游戏显示器采用了升降、旋转支架设计,能够让显示器实现丰富的摆放姿势,满足更多的桌面使用环境,让玩家坐在显示器前更加舒适。

  显示器背面设计了机甲纹路,以增添它的电竞游戏属性。

  显示器背面还了一个大大的ROG的“败家之眼”LOGO,内建有RGB灯效,在黑夜里看上去信仰十足。

  点亮之后的“败家之眼”。

  同时,电竞游戏显示器还能够与支持AURA SYNC神光同步技术的主板、显卡、内存、键盘、鼠标、机箱、外接RGB灯带等设备联动,打造更炫酷的电脑主机。

  这款电竞游戏显示器的控制按键集中在了机身背面左侧。用户坐在显示器前面伸出右手便可轻松地对这组按键进行操控。

  这款电竞游戏显示器的主控制菜单,显示位置位于屏幕的右下角。

  显示屏背面还设计了一个显示器锁扣。不少专业的商用场合一般会用得到。

  显示器支架顶端同样设计有ROG的“败家之眼”LOGO。

  显示器支架下部设计了理线孔。电源线、信号线、以及耳机线等线缆均可固定到这里面,以便营造桌面环境的整洁、美观。

  显示器背面的接口区域加装了一块可拆洗的挡板,以便提升显示器背面的美观性。

  这款电竞游戏显示器背面设计了电源接口、一个HDMI 2.0接口、一个DP 1.4接口、一个USB上行接口、两个USB 3.0接口、一个音频输出接口(用于连接耳机或者音箱)。

  这款电竞游戏显示器还附带了一个ROG桌面安装套件,利用它可将显示器安装到各种平坦的桌面边缘,大幅节省桌面空间。

  红蜘蛛基准测试

  利用红蜘蛛校色仪,笔者将对这款显示器进行一下专业的性能检测。

  【注:此次测试是在电竞游戏显示器开机默认的色彩模式下进行的,并且在不少测试场景下会将屏幕亮度调至最高。】

  第一项:色域测试

  (测试项目介绍)色域,指某种设备所能表达的颜色数量所构成的范围区域,即各种屏幕显示设备、打印机或印刷设备所能表现的颜色范围。色域值越大,设备所能够显示的颜色就越多。

  测试小结:这款显示器具备了98%的sRGB、71%的NTSC、76%的AdobeRGB色域覆盖率,表现很不错。

  第二项:色温/对比度一致性测试

  (测试项目介绍)色温/对比度一致性测试,是让显示器在屏幕不同亮度(0%、25%、50%、75%、100%五个亮度等级)下测试白点色温/对比度的稳定性,其最理想的结果是在各亮度下对比度和色温值都不会发生变化。色温体现的是屏幕的色彩是偏冷还是偏暖,通常我们会让电子产品屏幕显示纯白色,在D65标准以及环境亮度的情况下,色温为6500K正常,低于6500K则偏暖,而高于6500K则偏冷。

  测试小结:这款显示器的色温值非常稳定,始终保持在了7100K,色温属于偏冷的。对比度方面,50~100%亮度区间内对比度比较稳定,0~50%亮度区间内对比度波动很大。

  第三项:伽马曲线测试

  (测试项目介绍)通常在显示器行业中gamma=2.2是一个标准值。体现在测试报告中测量的gamma值曲线越接近2.2越好。gamma值越高(如2.2),则图像对比度以及色彩饱合度越高 – 通常会损失阴影细节。Gamma值越低(如1.8),则图像对比度和色彩饱合度越低,阴影细节更丰富。调整显示器的gamma值,对于多台设备显示相同的效果至关重要。gamma 2.2可从感观上为观看者提供始终如一的色调范围。

  测试小结:这款显示器实际的伽马曲线和理想的状况几乎是一致的,表现很好。

  第四项:亮度/色温均匀性测试

  (测试项目介绍)红蜘蛛校色仪会将屏幕划分为9个大区域,分布测试计算其屏幕在全白、全黑时的亮度以及色度坐标,最终得出结论。测试结束后,测试报告上会显示不同灰度下,该显示器9个区域的亮度和色彩差异值。出现的等效线越密,说明亮度或者色温的均匀性越差。

  测试小结:在D65标准中,色温值为6500K表示色彩比较准确,不会出现偏冷或者偏暖。通过测试可知,这款显示器左侧区域(4号测试区域)最接近D65的标准。屏幕下方区域(8号测试区域)偏差最大,差值为4.2。4.2的色温差值,表现尚可。

  在亮度均匀性方面,这款显示器中心区域(5号测试区域)亮度最高,达到了359.3cd/m2。100%亮度下最大差值为13%,亮度均匀性控制得也尚可。

  第五项:色彩精准度测试

  (测试项目介绍)屏幕上显示的颜色,往往会跟现实生活当中人眼看到的颜色有偏差。颜色差异越小,显示器当然就越好了。

  测试标准:

  当△E≤1时,人眼几乎不能辨别两种颜色的差异;

  当1<△E<3时,人眼需要仔细比对后才能辨别细微的颜色差异;

  当△E≥3时,人眼可以辨别出颜色差异,并认为是两种相近的颜色。

  当△E≥5时,大多数人眼可以看出颜色差异,并认为是完全不同的颜色。

  测试小结:平均△E为1.12,△E≥3且△E≥5的颜色只有一种。色彩精准度的表现比较好。

  NVIDIA Reflex低延迟技术

  与RTX30系列显卡同时发布的NVIDIA Reflex低延迟技术可优化和测量系统延迟,是NVIDIA努力提升游戏体验的一项重要举措。

  对竞技型游戏来说,PC性能指的便是响应能力——即鼠标移动或点击后显示器更新画面的速度能有多快。Reflex延迟分析器可监测到鼠标点击,并测量屏幕上相应像素变化所需时间(如枪焰闪光)。此前,玩家很难测量系统延迟,因为这需要超过7000美元的专用高速摄像机与配套设备才能实现。Reflex延迟分析器则对鼠标、PC以及显示器的性能表现拥有一套更完整、更精准的理解。现在,Reflex延迟分析器在手,玩家就能知晓系统正以它应处的状态中运转,从而满怀信心走上赛场。

  通过先进的GeForce和G-SYNC新技术来优化和测量竞技游戏中的系统延迟,从而更快地获取目标,做出反应,并提高瞄准精度。

  在这款电竞游戏显示器的主控制菜单里,便可开启的NVIDIA Reflex低延迟技术。

  在开启NVIDIA Reflex低延迟技术之后,支持该技术的游戏,例如《守望先锋》,能够进一步降低游戏延迟,让游戏画面更流畅,游戏体验更精彩。

  产品总结

  ROG Swift 360Hz PG259QNR是一款产品定位非常明确的游戏外设,就是搭配高性能的NVIDIA GeForce系列显卡使用,R、N联手共造超一流的电竞游戏体验。此次实测下来,这款电竞游戏显示器的色域、色准表现也很不错,大家可以放心入手。

  目前这款高端电竞游戏显示器在华硕京东自营旗舰店现货销售,日常价6499元,需要的玩家们可以前往购买。【购买传送门】

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Interview: China has enough experience to successfully host Winter Olympics******

KIEV, Dec. 16 (Xinhua) -- China has enough experience to successfully host the 2022 Winter Olympics, which will be essential to overcoming challenges and strengthening cohesion around the world, said Sergey Bubka, president of the National Olympic Committee (NOC) of Ukraine.。

"China has a very big experience to host the Olympic Games. You have great facilities, you have experience, you know what to do," Bubka told Xinhua in an interview on Wednesday, adding that the Olympic Games belongs to all of humanity and is beyond politics, religion and borders.。

"Doesn't matter [whether there are] political interests, religions, no borders, we are human beings. And through the Olympics, through Olympic ideals we bring everyone together," he said.。

The Beijing 2022 Olympic Winter Games will be an important instrument to express the solidarity of global society against the COVID-19 pandemic, Bubka said.。

"I think at this time, in COVID time, it's really important to have the Olympic Games," said the NOC head.。

According to Bubka, Beijing 2022 will send a positive message to the world that humanity will overcome the pandemic through joint efforts.。

"We will overcome this challenge of COVID-19 and of course we must be together," Bubka noted.。

Speaking on Ukraine's plans for the Beijing 2022 Olympics, Bubka disclosed that final preparations are well underway.。

"It is a very important period for athletes, who are preparing for the Beijing Olympic Games. Of course, they do training, they start competition already, this period is important for our athletes to qualify for the Olympic Games," he said.。

According to Bubka, Ukraine expects to send a 100-member delegation, including 40 to 46 athletes, to Beijing.。

"We are strong in biathlon and freestyle. We will see what our athletes will achieve," he said.。

Bubka, who was the 1988 men's pole vault Olympic champion, said he had visited China many times and had been impressed by the beauty of the country and the friendliness of the Chinese people.。

"I'd like to wish the Chinese people to enjoy the Games. The Olympic Games is very important for China and important for Asia to develop winter sports," Bubka said, while stressing the significance of the Games for the whole world.。

"The Games is very important for the world, because the Olympics unites everyone, brings everyone together, to show a strong message to the people all over the world that we can live in peace, we can be together," Bubka said. Enditem。

China's central bank conducts 50 bln yuan of reverse repos******

BEIJING, Nov. 18 (Xinhua) -- China's central bank Thursday injected 50 billion yuan (about 7.8 billion U.S. dollars) into the financial system via reverse repos.。

The interest rate for the seven-day reverse repos was set at 2.2 percent, according to the People's Bank of China.。

The move aims to keep the liquidity in the banking system reasonably stable, the central bank said.。

A reverse repo is a process in which the central bank purchases securities from commercial banks through bidding, with an agreement to sell them back in the future. Enditem。

美国借“南海”议题大搞“环太军演”,26国海军参加,背后有何居心?

1.韩国一架F-4E战机在海上坠毁 机上两名飞行员逃生

2.引领时代浪潮的豪华新主张 试驾全新第四代汉兰达

3.最高奖30万 民航局印发航空安全举报奖励暂行办法

4.北漂职校生电影梦:放弃小镇网吧管理员工作,认真搞艺术

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