成功的因素与失败的教训

Andy：大家好，我是Andy Plata。 Julie：我是Julie Plata。很高兴今天能在这里为大家演讲。我和Andy共同拥有一些服务于全球印刷业的公司。我们也为全球许多印刷类刊物撰文，我想诸位应该已经读过我们在科印传媒《数码印刷》杂志上发表的文章。     

Rotating machinery prognostics: State of the art,challenges and opportunities

Machinery prognosis is the forecast of the remaining operational life, future condition, or probability of reliable operation of an equipment based on the acquired condition monitoring data. This approach to modern maintenance practice promises to reduce downtime, spares inventory, maintenance costs, and safety hazards. Given the significance of prognostics capabilities and the maturity of condition monitoring technology, there have been an increasing number of publications on rotating machinery prognostics in the past few years. These publications covered a wide spectrum of prognostics techniques. This review article first synthesises and places these individual pieces of information in context, while identifying their merits and weaknesses. It then discusses the identified challenges, and in doing so, alerts researchers to opportunities for conducting advanced research in the field. Current methods for predicting rotating machinery failures are summarised and classified as conventional reliability models, condition-based prognostics models and models integrating reliability and prognostics. Areas in need of development or improvement include the integration of condition monitoring and reliability, utilisation of incomplete trending data, consideration of effects from maintenance actions and variable operating conditions, derivation of the non-linear relationship between measured data and actual asset health, consideration of failure interactions, practicability of requirements and assumptions, as well as development of performance evaluation frameworks.     

A Fast MAP Algorithm for High-Resolution Image Reconstruction with Multisensors

In many applications, it is required to reconstruct a high-resolution image from multiple, undersampled and shifted noisy images. Using the regularization techniques such as the classical Tikhonov regularization and maximum a posteriori (MAP) procedure, a high-resolution image reconstruction algorithm is developed. Because of the blurring process, the boundary values of the low-resolution image are not completely determined by the original image inside the scene. This paper addresses how to use (i) the Neumann boundary condition on the image, i.e., we assume that the scene immediately outside is a reflection of the original scene at the boundary, and (ii) the preconditioned conjugate gradient method with cosine transform preconditioners to solve linear systems arising from the high-resolution image reconstruction with multisensors. The usefulness of the algorithm is demonstrated through simulated examples.     

造纸厂资产管理欧洲视野:2007现状及趋势预测

设备维护费用是制造加工业运营成本中一项主要的费用支出,大约占生产成本的15%～40%.在不同的行业中维护费用有所不同,如食品加工业的平均维护费用约为生产成本的15%,而在制浆造纸业中,平均维护费用约为生产成本的40%.     

Cattaneo公司从胶印向柔印的转型

在过去的几年里.西欧国家标签市场一直呈现每年3%～6%的增长,而商业印刷市场的表现却是增长停滞,甚至有所下降.这种情形下,越来越多的原先采用单张纸胶印的商业印刷商开始把目光投向了持续增长的卷筒纸标签印刷业务,位于意大利米兰附近的Cattaneo公司就是其中的一家.这家成立于1920年的家族公司,主要业务是印制商业印刷品,包括书籍、海报等,从20世纪70年代开始,他们便使用轮转胶印表格机从事商业表格印刷.     

印刷企业积极进取的力量

Julie：在过去的几周里，美国和世界金融市场经历了非常困难的时期。世界上一些大型的银行机构和投资公司纷纷破产或由政府接管。在未来的几周里，世界各地可能会有更多的金融公司带来更多的坏消息。许多金融专家们对世界经济充满沮丧和悲观的情绪。     

刻蚀实现双重图形的前景

双重图形需要更新更苛刻的刻蚀能力，要求低于1.5nm CD均匀性、图形收缩和原位多层刻蚀。     

Oxidation with air of cyclohexanone to carboxylic diacids on carbon catalysts

Carbons derived from phenolic resins were used as catalysts for the aqueous phase oxidation of cyclohexanone at 140°C under air pressure. The reaction yielded mainly adipic, glutaric and succinic acids. The samples were modified by heat treatments in CO₂, air or N₂ at different temperatures and characterized to determine their surface area and porosity and to evaluate the functional groups on the surface. Treatments under CO₂ or air increased the oxidation activity. The selectivity to adipic acid was maximum (33%) after activation in air which greatly increased the surface concentration of oxygen-containing functional groups. However, it was not possible to attribute the selectivity to specific acidic, neutral or basic groups present at the surface of carbons. This revised version was published online in June 2006 with corrections to the Cover Date.     

胶印的数字化变革在继续

全美印艺展（GRAPH EXPO）于10月26～29日在美国芝加哥成功举办。虽然面临着经济不景气，但本次展会则超出了预期，无论是参展商，还是参观者，都满意而归。本期邀请Andy和Julie与您一起感受2008年全美印艺展的气息。