云端上的梦

俗话说,志当存高远——那么,渴望翱翔天际、腾云驾雾的梦想,着实够高够远了吧?头脑简单的我,也曾像许多人一样,对那群以飞来飞去为职业的人充满好奇和惊叹。仰视——正如我们需要抬起头来看在空中变得如绿豆般大小的飞机一样。你看啊,这帮人,人不傻,钱又多,而且都是帅哥美女,简直把世上的好处都占去了,能不招人羡慕妒忌恨吗?     

The Gift of the ISE Frameworks: A Better Language for Museum Learning

Abstract The publication of Learning Science in Informal Environments: People, Places, and Pursuits has garnered well‐deserved attention from the whole museum profession. It has become a point of discussion and debate, as well as a new tool for museum leadership and advocacy. Thinking of it only as a landmark report for science‐based museums, however, would be a mistake and a lost opportunity. This report has important content for cross‐disciplinary impact. It offers the gift of new language and thoughtful frameworks through which we can tell our individual stories more compellingly while supporting a shared definition of museums as valid places of learning. It gives fresh substance to the role of museums as effective learning resources.     

Critical issues in the development of STM journal publishing

Access to generations of scientific literature has never been more widespread. The advent of electronic publishing has improved the spread and speed of access while at the same time reducing unit costs. The current ‘open access’ debate raises interesting questions about the future of publishing and archiving. The declining growth of author‐pays titles, however, suggests that innovations that are sustainable long term and do not threaten the quality and integrity of scholarship are likely to be within the framework of the established model.     

Differences in technique between sprinters and distance runners at equal and maximal speeds

In the finishing kick of a distance race, maximizing speed becomes the focus even if economy may be sacrificed. If distance runners knew how to alter their technique to become more sprint-like, this process could be more successful. In this study, we compared the differences in technique between sprinters and distance runners while running at equal and maximal speeds. Athletes consisted of 10 Division I distance runners, 10 Division I sprinters, and 10 healthy non-runners. They performed two tests, each consisting of a 60-m run on the track: Test 1 at a set pace of 5.81 m/s, while Test 2 was maximal speed. Video was collected at 180 Hz. Significant differences (P < 0.05) between the sprint and distance groups at maximal speeds were found in the following areas: speed, minimum hip angle, knee extension at toe-off, stride length, contact time, and recovery knee at touchdown. In Test 1, sprinters and distance runners displayed many of the same significant differences. The control group was similar to the distance group in both trials. As distance runners attempt to sprint, the desired adjustments do not necessarily occur. Distance runners may benefit from biomechanical interventions to improve running speed near the end of a race.