Facebook’s Challenge and Future

Mark Zuckerberg, Facebook’s founder, has talked for years about the notion of a “social graph” which connects people to their friends and all of the things they are interested in. By encouraging hundreds of millions of people to share their deeds and reveal their innermost thoughts, profane or profound, online, his company has in effect mapped a portion of this graph on its computers. These billions of electronic nodes and links will soon make a fortune for Zuckerberg, still only 27, who owns 28.4% of Facebook and will continue to control most of the voting rights. It will also enrich other shareholders, many of them employees.


The bigger risk to Facebook is that growing concern over online privacy translates into a wave of legislation around the world that makes it far harder for the company to exploit the mountains of data it is collecting. That would throw a spanner into the works of its money-spinning advertising machine. So far there has been little sign of such a  backlash, though governments are paying closer attention to privacy. America is thinking of creating a general consumer-privacy law and the European Union is updating its rules.


Facebook and Google are increasingly in each other's wheelhouse. Google's social network- Google+ looked and functioned much like Facebook -- enabling users to post status updates, share links and upload photos. Right out of the gate, Google+ gained a lot of attention and a quick  onrush of users.


The social network’s IPO will also set the stage for an epic battle between the titans of the tech industry. Analysts believe that Facebook was running on top of another operating system all along. Instead of revolutionizing our reality, by filing an IPO Mark Zuckerberg is finally getting with the program.


内容概要:本文深入探讨了金属氢化物(MH)储氢系统在燃料电池汽车中的应用,通过建立吸收/释放氢气的动态模型和热交换模型,结合实验测试分析了不同反应条件下的性能表现。研究表明,低温环境有利于氢气吸收,高温则促进氢气释放;提高氢气流速和降低储氢材料体积分数能提升系统效率。论文还详细介绍了换热系统结构、动态性能数学模型、吸放氢特性仿真分析、热交换系统优化设计、系统控制策略优化以及工程验证与误差分析。此外,通过三维动态建模、换热结构对比分析、系统级性能优化等手段,进一步验证了金属氢化物储氢系统的关键性能特征,并提出了具体的优化设计方案。 适用人群:从事氢能技术研发的科研人员、工程师及相关领域的研究生。 使用场景及目标:①为储氢罐热管理设计提供理论依据;②推动车载储氢技术的发展;③为金属氢化物储氢系统的工程应用提供量化依据;④优化储氢系统的操作参数和结构设计。 其他说明:该研究不仅通过建模仿真全面验证了论文实验结论,还提出了具体的操作参数优化建议,如吸氢阶段维持25-30°C,氢气流速0.012g/s;放氢阶段快速升温至70-75°C,水速18-20g/min。同时,文章还强调了安全考虑,如最高工作压力限制在5bar以下,温度传感器冗余设计等。未来的研究方向包括多尺度建模、新型换热结构和智能控制等方面。
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