Guarantees come to professional service firms

Can lawyers, doctors, investment bankers, accountants, and consultants guarantee their work? Your money back if not absolutely delighted? Some professional service firms are doing exactly that, and they believe they are gaining not only satisfied customers but higher market share and improved service quality. The authors discuss the benefits and risks of unconditional and more limited guarantees. Firms that address this issue proactively now, they argue, will be less likely to rush into poorly considered guarantees later.     

卓越，Kindle要进入中国吗？

虽然Kindle要进入中国的传说还没有证实，包括汉王科技在内的国内电子书巨头们已经感到了巨大的压力。     

UNDP:助中国实现绿色梦想——专访UNDP驻华代表处国别副主任Napoleon Navarro

北京的三月,在一场漫天黄沙中拉开了春天的序幕。与此同时,中国西南旱情严重,百年一遇,6130万人面临生存挑战。在人们望"尘"兴叹、望"水"欲穿的时候,环境问题已迫在眉睫,成为北京、中国乃     

Finite volumes and finite elements: Two ‘good friends’

In this paper a comparison between the finite element and the finite volume methods is presented in the context of elliptic, convective–diffusion and fluid flow problems. The paper shows that both procedures share a number of features, like mesh discretization and approximation. Moreover, it is shown that in many cases both techniques are completely equivalent.     

"梦想照进现实"——从富勒烯、碳纳米管到石墨烯

从富勒烯、碳纳米管到石墨烯,过去25年见证了碳的三种同素异形体的发现和快速发展.石墨烯作为理想的二维碳纳米结构,表现出很多奇特的物理化学性质.物理学家和化学家对待石墨烯不同的研究视角以及石墨烯对于物理学家和化学家的不同意义在于:前者的任务是发现极限结构的奇特性质,而后者主要着跟于基于石墨烯的碳纳米结构可控构建和有效调控.化学家另外一项重要任务是解决石墨烯的制备科学问题,而温和条件下"热化学解理"是实现石墨烯规模制备、进而推动石墨烯研究快速发展的重要解决方案之一.     

BOPET薄膜加工中低聚物的产生和防止

本文介绍了聚酯低分子聚合物产生的原因,对BOPET薄膜性能和加工的影响,如何减少在BOPET薄膜加工中的低分子聚合物。     

完善计量体系再创管理佳绩

文章较系统全面地阐述了南京钢铁集团有限公司在1996年通过由原国家技术监督局组织的ISO10012－1《测量设备的计量确认体系》标准审核以来在完善计量检测体系、强化企业科学管理方面的实践经验，突出加强计量基础管理及数据管理对工业企业节能降耗、降本增益的重要性，为2002年度公司再次通过ISO10012国家级复审打下了坚实的基础。     

BOPET生产线产生气泡的原因分析

本文介绍了BOPET薄膜生产中,在熔体线中产生气泡的种类,和各种气泡产生的原N,及怎样减少或消除气泡的方法。     

Spectrum: the good guy's guide to the galaxies

The author surveys the 20 or so decades of frequency of the electromagnetic spectrum, and discusses both the energy and information which can be extracted from it. The Sun provides abundant radiant energy, which is being used to an increasing extent to provide terrestrial power. The history and use of radio waves, the visible spectrum, and X, γ and cosmic rays are examined. In recent years optical astronomy has received a boost from competition by radioastronomy. All available parts of the spectrum are now being used by both Earth and satellite-based instruments. There is rapidly-growing knowledge about the Universe and its probable origin in the Big Bang