智科眼

请选择以下任意方式登录

已有帐号?

验证码登录

微信登录

忘记密码
未收到验证码?
注册

微信注册

智科眼: 双语看懂新科研
能源与绿色科技 1200
Researchers(研究人员) have(have) conducted(进行了) the first(首次) analysis(分析) of(of) Bitcoin(比特币) power(功耗) consumption(消耗) based(根据) on(on) empirical data(经验数据) from(from) IPO(IPO) filings(申请) and() localization(本地化) of(of) IP(IP) addresses(地址).(.) They(他们) found(发现) that(that) the cryptocurrency(加密货币)'s('s) carbon() emissions(排放量) measure() up(up) to(to) those(那些) of(of) Kansas(堪萨斯) City()—or(—or) a(a) small() nation().(.) The study(研究),(,) published(发表) June(6月) 12(12) in(in) the journal(杂志) Joule(焦耳),(,) suggests(表明) that() cryptocurrencies(加密货币) contribute(贡献) to(to) global(全球) carbon() emissions(排放),(,) an(an) issue(问题) that(that) must(必须) be(be) considered(考虑) in(in) climate change(气候变化) mitigation(减缓) efforts(努力).(.)
Bitcoin(比特币) and() other(其他) cryptocurrencies(加密货) rely(依赖) on(on) blockchain(区块链) technology(技术),(,) which(which) enables(可以) a(a) secure(安全) network(网络) without(情况下) relying(依赖) on(on) a(a) third(第三) party().(.) Instead(),(,) so-(so-)called(称为) Bitcoin(比特币) "(")miners(矿工)"(") guarantee(保证) a(a) system(系统) without(没有) fraud(欺诈) by(通过) validating(验证) new() transactions(交易).(.) Miners(矿工) solve(解决) puzzles(难题) for(for) numerical(计算) signatures(数字签名),(,) a(a) process(过程) that(that) requires(需要) enormous(巨大) amounts(大量) of(of) computational(计算) power(能力).(.) In(In) return(回报),(,) miners(矿工) receive(收到) Bitcoin(比特) currency(货币).(.)
"(")This(这一) process(过程) results(导致) in(in) immense(巨大) energy(能源) consumption(消耗),(,) which(which) translates(转化) into(into) a(a) significant(显着) carbon() footprint(足迹),"(,") says() Christian(克里斯蒂安) Stoll(斯托尔),(,) a(a) researcher(研究员) at(at) the Center(中心) for(for) Energy(能源) Markets(市场) at(at) the Technical(技术) University(大学) of(of) Munich(慕尼黑),(,) Germany(德国),(,) and() the MIT(麻省理工) Center(中心) for(for) Energy(能源) and() Environmental Policy(环境政策) Research(研究).(.)
Scientists(科学家) have() growing() concerns(担心) that() Bitcoin(比特币) mining(开采) is(is) fueling(燃料) an(an) appetite(兴趣) for(for) energy(能源) consumption(消费) that(that) sometimes(有时) draws(借鉴) from() questionable(可疑) fuel(燃料) sources(来源)()such as(例如) coal(煤炭) from(from) Mongolia(蒙古)—in(—in) addition(增加) to(to) hydropower(水电) and() other(other) low-carbon(低碳) power(电力) resources(资源).(.) And() cryptocurrency(密货)'s('s) energy(能源) issues(问题) seem(似乎) to(to) only() be(be) getting(越来越) worse(严重),(,) with(with) the computing power(计算能力) required() to(to) solve(解决) a(a) Bitcoin(比特币) puzzle(难题) increasing(越来越) more than(以上) four()-()fold() in(in) 2018(2018) .(.) While(尽管) there(there) is(is) a(a) growing(增长) push() among(among) researchers(研究人员) to(to) quantify(量化) Bitcoin(比特币)'s('s) energy(能源) consumption(消耗) in(in) order(order) to(to) better(更好地) understand(了解) its() contribution(贡献) to(to) global climate(全球气候) change(变化),(,) recent(最近) studies(研究) have(have) struggled(努力) to(to) generate(产生) accurate(准确) estimates(估计).(.)
"We("We) argue(认为) that(that) our(我们) work(工作) goes() beyond(超越) prior(之前) work(工作),"(,") says() Stoll(斯托尔).(.) "We("We) can(可以) provide(提供) empirical(经验) evidence(证据) where(where) current(现有) literature(文献) is(is) based on(基于) assumptions(假设)."(.")
Stoll(Stoll) and() his() team(团队) used(使用) IPO(IPO) filings(申请) disclosed(披露) in(in) 2018(2018) by(by) all(所有) major(主要) mining(采矿) hardware(硬件) producers(生产商) to(to) determine(确定) which(which) machines(机器) miners(矿工) are(are) actually(实际) using(使用) and() the power efficiencies(功率效率) of(of) these(这些) machines(机器).(.) They(他们) also() used(使用) IP(IP) addresses(地址) to(to) determine(确定) emissions(排放) scenarios(情景) for(for) actual(实际) mining(采矿) locations(地点) and() compare(比较) carbon() emissions(排放) from(from) power sources(电源) used(使用) by(by) Bitcoin(特币) miners(矿工) in(in) different(不同) locations(地点).(.) Finally(最后),(,) they(他们) calculated(计算) Bitcoin(比特币)'s('s) carbon() footprint(足迹) based(根据) on(on) its(它的) total() power(功耗) consumption(消耗) and() estimates(估算) from(from) different(不同) emissions(排放) scenarios(情景).(.) These(这些) include(包括) a(a) lower limit(下限) scenario(方案),(,) in(in) which(其中) all(所有) miners(矿工) use(使用) the most() efficient(有效) hardware(硬件);(;) an(an) upper limit(上限) scenario(方案),(,) in(in) which(which) miners(矿工) behave(行事) rationally(合理地) by(通过) disconnecting(断开) their(它们) hardware(硬件) as(as) soon() as(as) costs(成本) exceed(超过) revenue(收入);(;) and() a(a) best(最佳) guess(猜测) scenario(情景),(,) which(which) accounts(解释) for(for) the anticipated(预期) energy(能量) efficiency() of(of) the network(网络) and() realistic(实际) additional(额外) energy losses(能量损失) from(from) cooling(冷却) and() IT(IT) hardware(硬件).(.)
"(")Our(我们) model(模型) reflects(反映了) how(how) the connected(连接) computing power(计算能力) and() the difficulty(难度) of(of) Bitcoin(比特币) search(搜索) puzzles(难题) interact(相互作用),(,) and() it() provides(提供了) a(a) high() precision(精度) of(of) power(能力) consumption(消耗) since(因为) it() incorporates(包含) auxiliary(辅助) losses(损耗),"(,") says() Stoll(Stoll).(.) "(")However(但是),(,) the precision(精确度) of(of) our(我们) results(结果) strongly() depends(取决于) on(on) the accuracy(准确性) of(of) the input data(输入数据),(,) such as(例如) the IPO(IPO) filings(申请) for(for) hardware(硬件) characteristics(特性).(.) The carbon() emissions(排放) strongly() depend(取决于) on(on) the assumed(假设) carbon() intensity(强度) of(of) power(动力) consumption()."(.")
Using(使用) this(这个) model(模型),(,) Stoll(Stoll) and() his() team(团队) estimated(估计) Bitcoin(比特币)'s('s) annual() energy(能耗) consumption(消耗) at(at) 45.8(45.8) terawatt(太瓦) hours().(.) This() allowed(使) them(他们) to(to) calculate(计算出) an(an) annual() carbon() emissions(排放量) range(范围) between(between) 22.0(22.0) and() 22.9(22.9) megatons(兆吨) of(of) CO2—(CO2—)equivalent(当量) to(to) CO2(二氧化碳) emitted(发射) by(by) Kansas(堪萨斯) City() and() placing() Bitcoin(比特币)'s('s) emissions(排放量) between(between) Jordan(约旦) and() Sri() Lanka(兰卡) in(in) emissions(排放量) rankings(排名) ((()the 82nd(82nd) and() 83rd(83rd) highest(最高) emitters(排放)).().) However(然而),(,) the researchers(研究人员) estimate(估计) that() the energy(能耗) consumption(消耗) estimate(估计) would() almost(几乎) double(加倍) ((()greatly(大大) amplifying(放大) emissions(排放) estimates(估算))()) if(如果) they(他们) were(were) to(to) include(包括) all(所有) other(其他) cryptocurrencies(加密货币) in(in) their() consequences(后果).(.)
"We("We) do(do) not() question(质疑) the efficiency(效率) gains(收益) that(that) blockchain(区块链) technology(技术) could(可以),(,) in(in) certain(某些) cases(情况),(,) provide(提供),"(,") says() Stoll(斯托尔).(.) "(")However(但是),(,) the current(目前) debate(争论) is(is) focused(集中) on(on) anticipated(预期) benefits(效益),(,) and() more(更多) attention(关注) needs(需要) to(to) be(be) given(给定) to(to) costs(成本)."(.")

新闻订阅

  • 科学
  • 技术
  • 医学

新闻分享