亚洲城市轨道交通系统的未来

前言 在世界任何地方,从事轨道交通基础设施建设最基本的挑战之一是创建财务上切实可行的项目.亚洲需要庞大的基础设施,因此,我们必须迎接这一挑战.P3模式--公有公司与私有公司合作方式--则是应对亚洲城市在发展中所面临的交通问题的手段.     

美人鱼 威尔汉的快艇

格扎维埃·威尔汉有一套秘诀,他的作品总能让我们在过马路时忍不住回头张望。例如那头用法拉利红色汽车喷漆挥洒而就的犀牛,还有那座数码像素作图、低分辨率的马拉车雕塑,仿佛在凡尔赛宫的庭院里迈着抽搐的碎步。这位法国艺术家有一种别致的风格和深刻的幽默感——他的作品让你笑,让你徘徊,让你最终怀疑所知的一切空间和运动常识。     

Ichthyoplankton in the neritic and coastal zone of Antarctica and Subantarctic islands: A review

Since the article published by Loeb et al. [Loeb, V.J., Kellermann, A., Koubbi, P., North, A.W., White, M., 1993. Antarctic larval fish assemblages: a review. Bull. Mar. Sci. 53(2), 416–449.] about Antarctic ichthyoplankton, many surveys were carried out in different sectors of the Southern Ocean focusing on different aspects of the ecology of fish larvae. Some of these researches were conducted in the Subantarctic Kerguelen Islands and others on the continental shelf off Terre Adélie and Georges V land. Oceanographic and geographic features influence fish larvae ecology such as island mass effects, gyres, canyons. Antarctic fishes show also temporal segregation of spawning which induces temporal succession of early stage larvae. This avoids competition and probably the predation on early stages for species having few recruits. In that case, we have to understand how these larvae can deal with the match–mismatch with their preys and how they find sufficient food to survive. But our knowledge on Antarctic fish larvae is still insufficient as we do not know larvae for quite a lot of species and because of the difficulty to sample during winter.