Time Transfer

Time Transfer is an enchanting story about football– a game which lost its magic, and follows the trials and tribulations of Manchester United and Accrington Stanley FC.

This book provides a comprehensive, systematic description of modern timekeeping and its specializations. Introductory chapters discuss the concept of time and its definition, then briefly look at pre-Atomic Era timekeeping to set the stage for the introduction of the atomic clock. Subsequent chapters focus on concepts such as frequency stability and measurement uncertainty, as well as computer network time-synchronization protocols including Network Time Protocol (NTP) and Precise Time Protocol (PTP). The book then delves into the nuts and bolts of the Global Navigation Satellite Systems (GNSS), Two-Way Satellite Time and Frequency Transfer, and Optical Time and Frequency Transfer. Timescale theory is then described as a way to combine clock data, and the algorithms and procedures used to generate Coordinated Universal Time (UTC) are given. Finally, there is a look at modern applications of timekeeping and time transfer. Featuring a glossary of all key terms, this book is highly recommended for trained or incoming physicists, engineers, or mathematicians working, for example, in manufacturing or timing laboratories. Additionally, it is suitable for use in introductory university courses dealing with the subject of timekeeping.

The distribution of precision-time and time-interval (PTTI) information has been accomplished in the past by various methods. The most accurate method has been the transportation of a cesium frequency standard to the required location and return. In many instances transporting a cesium standard is too expensive for the accuracy of the transfer of PTTI required. Transfer of time via satellite transponders is not new. What is new is the method of computing delay corrections. The technique of a passive one-way timing technique with field correction for atmospheric delay is discussed. (Author).

With the increasing sophistication of urban rail networks, the combined effects of rail transit on urban development are more and more complex and in-depth, and large-scale rail transit construction and operation have placed new demands on planning, construction, investment and financing. This main aim of these proceedings is to study and explore theoretical progress, methodological innovation and lessons learned in aspects of the planning stage, urban planning, architectural design, development and construction, safety systems, management support, etc. involved in the process of comprehensive utilization along urban rail transit lines and in the development and utilization of the surrounding land, in order to provide a platform for decision-makers and researchers involved in urban rail transit construction, urban construction and development.

Among the most significant legal developments of our time is the emergence of a European private law. The European Union enacts directives which profoundly affect the practice,teaching and study of core areas of 'classical' private law. Internationally commissions have formulated principles of European trusts, contract and commercial law. Furthermore, uniform private law can be found in a number of international conventions. This book gathers together fundamental texts from these three sources into one convenient volume. Its emphasis is on general civil and commercial law, particularly on the obligations and property aspects of these. Fully updated, it contains the recent directives in the areas of E-Commerce, Electronic Signatures and Late Payments. It also makes available for the first time English language versions of a number of texts by international commissions. This book is a sister volume to the original German and the subsequent Spanish version. With full references to the implementation of the directives in Denmark, EIRE, Finland, Sweden and the United Kingdom, this book will be a useful resource for practitioners, students and teachers working in the field of European private law.

This book constitutes the proceedings of the International Conference on Adaptive and Intelligent Systems, ICAIS 2011, held in Klagenfurt, Austria, in September 2011. The 36 full papers included in these proceedings together with the abstracts of 4 invited talks, were carefully reviewed and selected from 72 submissions. The contributions are organized under the following topical sections: incremental learning; adaptive system architecture; intelligent system engineering; data mining and pattern recognition; intelligent agents; and computational intelligence.

Textbook and design guide for the structural design of post-tensioned concrete.