TOP leaders vowed to build a ＂beautiful China＂ in late 2012 at the 18th National Congress of the country＇s ruling party. But Beijing＇s air quality in early 2013 has shown that China still has a long way to go befo...TOP leaders vowed to build a ＂beautiful China＂ in late 2012 at the 18th National Congress of the country＇s ruling party. But Beijing＇s air quality in early 2013 has shown that China still has a long way to go before realizing that goal. ＂If you have any respiratory diseases, please consult your doctor before you travel to China.＂ suggests the Canadian Foreign Ministry on its website, This seemed to be good advice as Beijing hospitals saw a 30-percent increase in the number of patients with respiratory problems in the first month of 2013 as soaring pollution levels got national and international attention.展开更多
Sudan through Chinese eyes ＂bEHIND the diwan （plaid window） of each building hide the bright eyes of women calmly peeping at passers-by and streets without being noticed themselves. The diwan is like an exquisite v...Sudan through Chinese eyes ＂bEHIND the diwan （plaid window） of each building hide the bright eyes of women calmly peeping at passers-by and streets without being noticed themselves. The diwan is like an exquisite veil draped over a building, covering everything.＂ This is a quotation from ＂The Eyes of Sudanese Women,＂ an ar-展开更多
WHILE some Chinese people hailed the news that an informal economic leaders＇ meeting at the 2014 Asia-Pacific Economic Cooperation （APEC） fo- rum would be held near Beijing＇s Yanqi Lake. many others worried whethe...WHILE some Chinese people hailed the news that an informal economic leaders＇ meeting at the 2014 Asia-Pacific Economic Cooperation （APEC） fo- rum would be held near Beijing＇s Yanqi Lake. many others worried whether or not these state leaders would have the courage to come to Beijing in autumn, when seri- ous air pollution might engulf the city and its surrounding regions.展开更多
This paper investigates the impact of Open Skies agreements on airfares and passenger traffic on gateway-to-gateway routes between the United States and other countries,given the presence of global alliances.The con-v...This paper investigates the impact of Open Skies agreements on airfares and passenger traffic on gateway-to-gateway routes between the United States and other countries,given the presence of global alliances.The con-ventional wisdom is for Open Skies agreements to contribute to lower fares and higher passenger traffic.However,the U.S.and some of its open skies partners grant airline alliances antitrust exemptions.These exemptions could lead to higher fares and reduced passenger volumes on routes covered by Open Skies agreements.Therefore,the net effect of Open Skies agreements is uncertain,a priori.Using panel data covering over 1,000 U.S.international routes during the 2015-2019 period,we find empirical evidence at both route and country levels suggesting that Open Skies agreements do lead to lower discount economy fares and to higher passenger traffic,despite the presence of global alliances.展开更多
In winter,the weather is usually cold and everything seems a bit dull.Butthe sun in winter is special.When the sun shines brightly in the clear blue sky,it brings warm(1)to thecold world.The golden sunlight spreads he...In winter,the weather is usually cold and everything seems a bit dull.Butthe sun in winter is special.When the sun shines brightly in the clear blue sky,it brings warm(1)to thecold world.The golden sunlight spreads here and there and it makes the whitesnow shine like diamonds.Although the trees are usually bare in winter,but(2)they look beautiful with the sunlight falling on them.展开更多
Have you ever heard of a "refuge for stars"?Located at an average elevation of over 4,500 meters,Ngari Prefecture boasts world-class night-sky conditions due to minimal atmospheric pollution,abundant clear d...Have you ever heard of a "refuge for stars"?Located at an average elevation of over 4,500 meters,Ngari Prefecture boasts world-class night-sky conditions due to minimal atmospheric pollution,abundant clear days,high transparency,low humidity.展开更多
1 The night sky is one of the few things humanity has been able to rely on throughout our history:to guide our travels,to light our ways and to measure the passage of time.But year by year,it is becoming harder to cou...1 The night sky is one of the few things humanity has been able to rely on throughout our history:to guide our travels,to light our ways and to measure the passage of time.But year by year,it is becoming harder to count on—because it is becoming harder to see.It's not just observing the stars that's getting more difficult.Light pollution is also disrupting our health and natural ecosystems.展开更多
AS twilight descended,a screen rose.Locals and tourists converged spontaneously on the open-air cinema on the second-floor terrace of Chang’an Mills shopping plaza,in the iconic Shougang Park,Beijing.If anything riva...AS twilight descended,a screen rose.Locals and tourists converged spontaneously on the open-air cinema on the second-floor terrace of Chang’an Mills shopping plaza,in the iconic Shougang Park,Beijing.If anything rivals the magic of a summer night sky,it’s the jovial atmosphere brought about by the silver screen.展开更多
New policies bring the two sides of the Taiwan Straits closer to the goal of "three links" The Mid-Autumn Festival,which fell on September 14 this year,
A booming economy and an ever-expanding foreign trade have boosted China's total volume of air cargo eightfold in the past decade with an annual growth of 17 percent
The EU loses its leadership role in international negotiations on climate change European Union influence in the global fight against climate change was put to the test at the Copenhagen summit.But judging
The upcoming Beijing Olympic Games presents both opportuni- ties and challenges to China.This applies especially to the aviation indus- try.Domestic airlines are gearing them- selves for a fierce battle over market sh...The upcoming Beijing Olympic Games presents both opportuni- ties and challenges to China.This applies especially to the aviation indus- try.Domestic airlines are gearing them- selves for a fierce battle over market shares.Meanwhile,a spate of interna- tional airlines have also been sharpening their competitive edge so as to carve a slice of the aviation pie.British展开更多
ONE sunny morning,we startedfor Yanqi Lake,Huairou District,Beijing,to try“rocket bungy”,so farthe only facility for this sport inChina.On the way there,wequestioned our courage and heartendurance. Entering the gate...ONE sunny morning,we startedfor Yanqi Lake,Huairou District,Beijing,to try“rocket bungy”,so farthe only facility for this sport inChina.On the way there,wequestioned our courage and heartendurance. Entering the gate we saw,towering over a banner saying,展开更多
Thermoelectric generators(TEGs)play a critical role in collecting renewable energy fromthe sun and deep space to generate clean electricity.With their environmentally friendly,reliable,and noise-free operation,TEGs of...Thermoelectric generators(TEGs)play a critical role in collecting renewable energy fromthe sun and deep space to generate clean electricity.With their environmentally friendly,reliable,and noise-free operation,TEGs offer diverse applications,including areas with limited power infrastructure,microelectronic devices,and wearable technology.The review thoroughly analyses TEG system configurations,performance,and applications driven by solar and/or radiative cooling,covering non-concentrating,concentrating,radiative cooling-driven,and dual-mode TEGs.Materials for solar absorbers and radiative coolers,simulation techniques,energy storage management,and thermal management strategies are explored.The integration of TEGs with combined heat and power systems is identified as a promising application.Additionally,TEGs hold potential as charging sources for electronic devices.This comprehensive review provides valuable insights into this energy collection approach,facilitating improved efficiency,reduced costs,and expanded applications.It also highlights current limitations and knowledge gaps,emphasizing the importance of further research and development in unlocking the full potential of TEGs for a sustainable and efficient energy future.展开更多
文摘TOP leaders vowed to build a ＂beautiful China＂ in late 2012 at the 18th National Congress of the country＇s ruling party. But Beijing＇s air quality in early 2013 has shown that China still has a long way to go before realizing that goal. ＂If you have any respiratory diseases, please consult your doctor before you travel to China.＂ suggests the Canadian Foreign Ministry on its website, This seemed to be good advice as Beijing hospitals saw a 30-percent increase in the number of patients with respiratory problems in the first month of 2013 as soaring pollution levels got national and international attention.
文摘Sudan through Chinese eyes ＂bEHIND the diwan （plaid window） of each building hide the bright eyes of women calmly peeping at passers-by and streets without being noticed themselves. The diwan is like an exquisite veil draped over a building, covering everything.＂ This is a quotation from ＂The Eyes of Sudanese Women,＂ an ar-
文摘WHILE some Chinese people hailed the news that an informal economic leaders＇ meeting at the 2014 Asia-Pacific Economic Cooperation （APEC） fo- rum would be held near Beijing＇s Yanqi Lake. many others worried whether or not these state leaders would have the courage to come to Beijing in autumn, when seri- ous air pollution might engulf the city and its surrounding regions.
文摘This paper investigates the impact of Open Skies agreements on airfares and passenger traffic on gateway-to-gateway routes between the United States and other countries,given the presence of global alliances.The con-ventional wisdom is for Open Skies agreements to contribute to lower fares and higher passenger traffic.However,the U.S.and some of its open skies partners grant airline alliances antitrust exemptions.These exemptions could lead to higher fares and reduced passenger volumes on routes covered by Open Skies agreements.Therefore,the net effect of Open Skies agreements is uncertain,a priori.Using panel data covering over 1,000 U.S.international routes during the 2015-2019 period,we find empirical evidence at both route and country levels suggesting that Open Skies agreements do lead to lower discount economy fares and to higher passenger traffic,despite the presence of global alliances.
文摘In winter,the weather is usually cold and everything seems a bit dull.Butthe sun in winter is special.When the sun shines brightly in the clear blue sky,it brings warm(1)to thecold world.The golden sunlight spreads here and there and it makes the whitesnow shine like diamonds.Although the trees are usually bare in winter,but(2)they look beautiful with the sunlight falling on them.
文摘Have you ever heard of a "refuge for stars"?Located at an average elevation of over 4,500 meters,Ngari Prefecture boasts world-class night-sky conditions due to minimal atmospheric pollution,abundant clear days,high transparency,low humidity.
文摘1 The night sky is one of the few things humanity has been able to rely on throughout our history:to guide our travels,to light our ways and to measure the passage of time.But year by year,it is becoming harder to count on—because it is becoming harder to see.It's not just observing the stars that's getting more difficult.Light pollution is also disrupting our health and natural ecosystems.
文摘AS twilight descended,a screen rose.Locals and tourists converged spontaneously on the open-air cinema on the second-floor terrace of Chang’an Mills shopping plaza,in the iconic Shougang Park,Beijing.If anything rivals the magic of a summer night sky,it’s the jovial atmosphere brought about by the silver screen.
文摘New policies bring the two sides of the Taiwan Straits closer to the goal of "three links" The Mid-Autumn Festival,which fell on September 14 this year,
文摘A booming economy and an ever-expanding foreign trade have boosted China's total volume of air cargo eightfold in the past decade with an annual growth of 17 percent
文摘The EU loses its leadership role in international negotiations on climate change European Union influence in the global fight against climate change was put to the test at the Copenhagen summit.But judging
文摘The upcoming Beijing Olympic Games presents both opportuni- ties and challenges to China.This applies especially to the aviation indus- try.Domestic airlines are gearing them- selves for a fierce battle over market shares.Meanwhile,a spate of interna- tional airlines have also been sharpening their competitive edge so as to carve a slice of the aviation pie.British
文摘ONE sunny morning,we startedfor Yanqi Lake,Huairou District,Beijing,to try“rocket bungy”,so farthe only facility for this sport inChina.On the way there,wequestioned our courage and heartendurance. Entering the gate we saw,towering over a banner saying,
基金supported by the Hong Kong Polytechnic University through Projects of RCRE(Project No.1-BBEG)sponsored by the Research Grants Council of HongKong and the NationalNatural Science Foundation of China(Project No.N_PolyU513/18).
文摘Thermoelectric generators(TEGs)play a critical role in collecting renewable energy fromthe sun and deep space to generate clean electricity.With their environmentally friendly,reliable,and noise-free operation,TEGs offer diverse applications,including areas with limited power infrastructure,microelectronic devices,and wearable technology.The review thoroughly analyses TEG system configurations,performance,and applications driven by solar and/or radiative cooling,covering non-concentrating,concentrating,radiative cooling-driven,and dual-mode TEGs.Materials for solar absorbers and radiative coolers,simulation techniques,energy storage management,and thermal management strategies are explored.The integration of TEGs with combined heat and power systems is identified as a promising application.Additionally,TEGs hold potential as charging sources for electronic devices.This comprehensive review provides valuable insights into this energy collection approach,facilitating improved efficiency,reduced costs,and expanded applications.It also highlights current limitations and knowledge gaps,emphasizing the importance of further research and development in unlocking the full potential of TEGs for a sustainable and efficient energy future.
