Sixth-Order Vacuum-Polarization Contribution to the Lamb Shift of the Muonic Hydrogen

The sixth-order electron-loop vacuum-polarization contribution to the $2P_{1/2} - 2S_{1/2}$ Lamb shift of the muonic hydrogen ($\mu^{-} p^+$ bound state) has been evaluated numerically. Our result is 0.007608(1) meV. This eliminates the largest uncertainty in the theoretical calculation. Combined with the proposed precision measurement of the Lamb shift it will lead to a very precise determination of the proton charge radius.Comment: 4 pages, 5 figures the totoal LS number is change

Fashion retailing – past, present and future

This issue of Textile Progress reviews the way that fashion retailing has developed as a result of the application of the World Wide Web and information and communications technology (ICT) by fashion-retail companies. The review therefore first considers how fashion retailing has evolved, analysing retail formats, global strategies, emerging and developing economies, and the factors that are threatening and driving growth in the fashion-retail market. The second part of the review considers the emergence of omni-channel retailing, analysing how retail has progressed and developed since the adoption of the Internet and how ICT initiatives such as mobile commerce (m-commerce), digital visualisation online, and in-store and self-service technologies have been proven to support the progression and expansion of fashion retailing. The paper concludes with recommendations on future research opportunities for gaining a better understanding of the impacts of ICT and omni-channel retailing, through which it may be possible to increase and develop knowledge and understanding of the way the sector is developing and provide fresh impetus to an already-innovative and competitive industr

Folder 9: Model engine data sheets and operating instructions, P - S, 1942, 1990, 1998

Information about the Redshift 60 model engine along with various related models. Document from The Wesley Pettinger Engine Model Collection

Londons triumphs [electronic resource] : express'd in sundry representations, pageants, and shows, performed on Monday, Octob. 30, 1676, at the inauguration and instalment of the Right Honourable Sir Thomas Davies, Kt., Lord Mayor of the city of London : containing a true description of the several scenes and habits of the representers, with the speeches spoken on each pageant /

"All the charge and expences of the industrious designs being the sole undertakings of the ancient and Right Worshipful Society of Drapers, being the second year without intermission."Reproduction of original in the Huntington Library.WingElectronic reproduction