The concept of new comprehensive sea power established in Japan shows that a marine development course is actively taken by Japanese government,for the purpose of realizing the country’s sustainable development.Howev...The concept of new comprehensive sea power established in Japan shows that a marine development course is actively taken by Japanese government,for the purpose of realizing the country’s sustainable development.However,Japan is actively developing its naval forces to fight for sea interests,so that an adverse effect has been played on the development of China.In the sea power dispute between China and Japan,the core interests of both countries are involved,so that the cold situation of the political,economic and cultural exchanges has been caused.In view of the sea power disputes between China and Japan,cooperation and negotiation should be promoted by China more commonly;a concept of sea power and a marine strategy conforming to the actual national conditions should be established;the mutually beneficial and win-win situation should be actively promoted with the neighboring countries;the studies of the international maritime law and the establishment of marine legal system should be strengthened.展开更多
This article is unabashed advocacy for China's sea power by one of China's leading national security experts closely tied to the People's Liberation Army.Sea power,argues the author,is vital to China's...This article is unabashed advocacy for China's sea power by one of China's leading national security experts closely tied to the People's Liberation Army.Sea power,argues the author,is vital to China's economic and political survival because (1)the Mahanian Sea Power theory still is applicable to China;(2)due to the existence of the United States,our world is still predominantly ruled by Hobbesian Law whereby the strong bully the weak;and (3)the First Sino-Japanese War (1894-1895) taught China painful lessons about the importance of Sea Power.The author unambiguously argues that China needs to drastically increase its naval budget,ought to give up the romantic notion that "international cooperation" will be reliably successful in keeping China's sea lines of communication (SLOCs) open,and,finally,should not fear provoking strong reaction to its naval build-up from the United States.展开更多
文章对海上风电各国总体发展现状及未来发展趋势进行分析,表明各国都在加强对海上风电开发利用,但随着海上风电高速发展,有限的近海风电资源开发趋于饱和,深远海域风电成为海上风电未来发展的方向。然而水深离岸远,深远海风能开发困难,...文章对海上风电各国总体发展现状及未来发展趋势进行分析,表明各国都在加强对海上风电开发利用,但随着海上风电高速发展,有限的近海风电资源开发趋于饱和,深远海域风电成为海上风电未来发展的方向。然而水深离岸远,深远海风能开发困难,难于实现商业化。文章介绍了一种将新能源电力转换为其他能源载体的Power to X模式。氢作为1种可再生能源载体,可基于Power to X模式,通过将新能源电力电解水制氢的方式,有效降低深远海风电的成本。展开更多
This paper describes the implementation of a data logger for the real-time in-situ monitoring of hydrothermal systems. A compact mechanical structure ensures the security and reliability of data logger when used under...This paper describes the implementation of a data logger for the real-time in-situ monitoring of hydrothermal systems. A compact mechanical structure ensures the security and reliability of data logger when used under deep sea. The data logger is a battery powered instrument, which can connect chemical sensors （pH electrode, H2S electrode, H2 electrode） and temperature sensors. In order to achieve major energy savings, dynamic power management is implemented in hardware design and software design. The working current of the data logger in idle mode and active mode is 15 μA and 1.44 mA respectively, which greatly extends the working time of battery. The data logger has been successftdly tested in the first Sino-American Cooperative Deep Submergence Project from August 13 to September 3, 2005.展开更多
When one applies the wavelet transform to analyze finite-length time series, discontinuities at the data boundaries will distort its wavelet power spectrum in some regions which are defined as a wavelength-dependent c...When one applies the wavelet transform to analyze finite-length time series, discontinuities at the data boundaries will distort its wavelet power spectrum in some regions which are defined as a wavelength-dependent cone of influence （COI）. In the COI, significance tests are unreliable. At the same time, as many time series are short and noisy, the COI is a serious limitation in wavelet analysis of time series. In this paper, we will give a method to reduce boundary effects and discover significant frequencies in the COI. After that, we will apply our method to analyze Greenland winter temperature and Baltic sea ice. The new method makes use of line removal and odd extension of the time series. This causes the derivative of the series to be continuous （unlike the case for other padding methods）. This will give the most reasonable padding methodology if the time series being analyzed has red noise characteristics.展开更多
文摘The concept of new comprehensive sea power established in Japan shows that a marine development course is actively taken by Japanese government,for the purpose of realizing the country’s sustainable development.However,Japan is actively developing its naval forces to fight for sea interests,so that an adverse effect has been played on the development of China.In the sea power dispute between China and Japan,the core interests of both countries are involved,so that the cold situation of the political,economic and cultural exchanges has been caused.In view of the sea power disputes between China and Japan,cooperation and negotiation should be promoted by China more commonly;a concept of sea power and a marine strategy conforming to the actual national conditions should be established;the mutually beneficial and win-win situation should be actively promoted with the neighboring countries;the studies of the international maritime law and the establishment of marine legal system should be strengthened.
文摘This article is unabashed advocacy for China's sea power by one of China's leading national security experts closely tied to the People's Liberation Army.Sea power,argues the author,is vital to China's economic and political survival because (1)the Mahanian Sea Power theory still is applicable to China;(2)due to the existence of the United States,our world is still predominantly ruled by Hobbesian Law whereby the strong bully the weak;and (3)the First Sino-Japanese War (1894-1895) taught China painful lessons about the importance of Sea Power.The author unambiguously argues that China needs to drastically increase its naval budget,ought to give up the romantic notion that "international cooperation" will be reliably successful in keeping China's sea lines of communication (SLOCs) open,and,finally,should not fear provoking strong reaction to its naval build-up from the United States.
文摘文章对海上风电各国总体发展现状及未来发展趋势进行分析,表明各国都在加强对海上风电开发利用,但随着海上风电高速发展,有限的近海风电资源开发趋于饱和,深远海域风电成为海上风电未来发展的方向。然而水深离岸远,深远海风能开发困难,难于实现商业化。文章介绍了一种将新能源电力转换为其他能源载体的Power to X模式。氢作为1种可再生能源载体,可基于Power to X模式,通过将新能源电力电解水制氢的方式,有效降低深远海风电的成本。
基金supported by the International Cooperative Key Project(Grant No.2004DFA04900)Ministry of Sciences and Technology of PRC,and the National Natural Science Foundation of China (Grant Nos.40637037 and 50675198)
文摘This paper describes the implementation of a data logger for the real-time in-situ monitoring of hydrothermal systems. A compact mechanical structure ensures the security and reliability of data logger when used under deep sea. The data logger is a battery powered instrument, which can connect chemical sensors （pH electrode, H2S electrode, H2 electrode） and temperature sensors. In order to achieve major energy savings, dynamic power management is implemented in hardware design and software design. The working current of the data logger in idle mode and active mode is 15 μA and 1.44 mA respectively, which greatly extends the working time of battery. The data logger has been successftdly tested in the first Sino-American Cooperative Deep Submergence Project from August 13 to September 3, 2005.
基金partially supported by the National Key Science Program for Global Change Research (Grant no.2010CB950504)the National High-Technology Research & Development Program of China (863 Program,Grant no.2010AA012305)+2 种基金the National Natural Science Foundation of China(Grant no.41076125)the Fundamental Research Funds for the Central Universities (Key Program)the Polar Climate and Environment Key Laboratory
文摘When one applies the wavelet transform to analyze finite-length time series, discontinuities at the data boundaries will distort its wavelet power spectrum in some regions which are defined as a wavelength-dependent cone of influence （COI）. In the COI, significance tests are unreliable. At the same time, as many time series are short and noisy, the COI is a serious limitation in wavelet analysis of time series. In this paper, we will give a method to reduce boundary effects and discover significant frequencies in the COI. After that, we will apply our method to analyze Greenland winter temperature and Baltic sea ice. The new method makes use of line removal and odd extension of the time series. This causes the derivative of the series to be continuous （unlike the case for other padding methods）. This will give the most reasonable padding methodology if the time series being analyzed has red noise characteristics.
