66,625 research outputs found
Geomechanical characterisation of fault rocks in tunnelling: The Brenner Base Tunnel (Northern Italy)
No full textThe goal of this study is to characterise the rock faults involved in the excavation works of the Brenner
Base Tunnel, which crosses one of the main tectonic alignments of the alpine area, the Periadriatic fault.
The characterisation was carried out at different scales from macro (through drillings and geomechanical
surveys) to meso (lab tests on specimens) and micro-scale (through thin sections), in order to find a correlation
between the different scales properties of the rock masses. Finally, a relation between the voids
ratio at the micro-scale and the fault rocks conditions at the meso and macro-scale was pointed out. As a
result, by means of the Hoek–Brown method, an estimation of the fault rock strength was achieved, tending
to avoid quite a typical overestimation arising from the use of literature values
Handbook on Tunnels and Underground Works: Volume 1: Concept–Basic Principles of Design
No full textThe book provides a new, global, updated, thorough, clear and practical risk-based approach a global, updated, thorough, clear and practical new risk-based approach to tunnelling design and construction methods, and discusses detailed examples of solutions applied to relevant case histories. It is organized in three sequential and integrated volumes:
• Volume 1 ‘Concept – Basic Principles of Design’
• Volume 2 ‘Construction – Methods, Equipment, Tools and Materials’
• Volume 3 ‘Case Histories and Best Practices’
The book covers all aspects of tunnelling, giving useful and practical information about design (Vol. 1), construction (Vol. 2) and best practices (Vol. 3). It provides the
following features and benefits:
• updated vision on tunnelling design, tools, materials and construction
• balanced mix of theory, technology and applied experience
• different and harmonized points of view from academics, professionals and contractors
• easy consultation in the form of a handbook
• risk-oriented approach to tunnelling problems.
The tunnelling industry is amazingly widespread and increasingly important all over the world, particularly in developing countries. The possible audience of the book
are engineers, geologists, designers, constructors, providers, contractors, public and private customers, and, in general, technicians involved in the tunnelling and underground works industry. It is also a suitable source of information for industry professionals, senior undergraduate and graduate students, researchers and acade
Mining e-mail content for author identification forensics
No full textWe describe an investigation into e-mail content mining for author identification, or authorship attribution, for the purpose of forensic investigation. We focus our discussion on the ability to discriminate between authors for the case of both aggregated e-mail topics as well as across different email topics. An extended set of e-mail document features including structural characteristics and linguistic patterns were derived and, together with a Support Vector Machine learning algorithm, were used for mining the e-mail content. Experiments using a number of e-mail documents generated by different authors on a set of topics gave promising results for both aggregated and multi-topic author categorisation
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Hanbook on Tunnels and Underground Works: Volume 2: Construction - Methods, Equipment, Tools and Materials
No full textDescrizione delle problematiche relativa alle procedure costruttive delle gallerie, alle attrezzature ed a materiali che possono essere utilizzati
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
Assessment of excavation-related hazards and design of mitigation measures
No full texthis chapter is devoted to the presentation of the most popular approaches employed to design mitigation measures. Initially, the mitigation measures necessary for a safe excavation and a permanent cavity stabilization are considered. Subsequently, the observational method, a design procedure aimed at optimizing the management of the unavoidable geological and geotechnical uncertainties affecting both tunnel design and construction, is presented. Finally, the long-term tunnel performance under accidental loads is discussed
Handbook on Tunnels and Underground Works: Volume 1: Concept–Basic Principles of Design
No full textThe book provides a new, global, updated, thorough, clear and practical risk-based approach to tunnelling design and construction methods, and discusses detailed examples of solutions applied to relevant case histories. It is organized in three sequential and integrated volumes: Volume 1: Concept – Basic Principles of Design Volume 2: Construction – Methods, Equipment, Tools and Materials Volume 3: Case Histories and Best Practices The book covers all aspects of tunnelling, giving useful and practical information about design (Volume 1), construction (Volume 2) and best practices (Volume 3). It provides the following features and benefits: Updated vision on tunnelling design, tools, materials and construction balanced mix of theory, technology and applied experience different and harmonized points of view from academics, professionals and contractors easy consultation in the form of a handbook risk-oriented approach to tunnelling problems. The tunnelling industry is amazingly widespread and increasingly important all over the world, particularly in developing countries. The possible audience of the book are engineers, geologists, designers, constructors, providers, contractors, public and private customers, and, in general, technicians involved in the tunnelling and underground works industry. It is also a suitable source of information for industry professionals, senior undergraduate and graduate students, researchers and academics
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