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1. |
Record Nr. |
UNINA9910456385703321 |
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Autore |
Peters Isabella |
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Titolo |
Folksonomies [[electronic resource] ] : indexing and retrieval in Web 2.0 / / Isabella Peters ; translated from German by Paul Becker |
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Pubbl/distr/stampa |
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Berlin, : De Gruyter/Saur, c2009 |
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ISBN |
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1-282-71567-4 |
9786612715679 |
3-598-44185-1 |
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Descrizione fisica |
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1 online resource (452 p.) |
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Collana |
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Knowledge & information : studies in information science, , 1868-842X |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Web 2.0 - Social aspects |
Web sites - Abstracting and indexing - Social aspects |
Information retrieval - Social aspects |
User-generated content |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and indexes. |
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Nota di contenuto |
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Frontmatter -- Contents -- Introduction -- Chapter 1 Collaborative Information Services -- Chapter 2 Basic Terms in Knowledge Representation and Information Retrieval -- Chapter 3 Knowledge Representation in Web 2.0: Folksonomies -- Chapter 4 Information Retrieval with Folksonomies -- Conclusion -- Backmatter |
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Sommario/riassunto |
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In Web 2.0 users not only make heavy use of Collaborative Information Services in order to create, publish and share digital information resources - what is more, they index and represent these re-sources via own keywords, so-called tags. The sum of this user-generated metadata of a Collaborative Information Service is also called Folksonomy. In contrast to professionally created and highly structured metadata, e.g. subject headings, thesauri, classification systems or ontologies, which are applied in libraries, corporate information architectures or commercial databases and which were |
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2. |
Record Nr. |
UNINA9910367237703321 |
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Autore |
Wu Wei |
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Titolo |
Absorption Heating Technologies : Efficient Heating, Heat Recovery and Renewable Energy / / by Wei Wu, Xianting Li, Tian You |
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Pubbl/distr/stampa |
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Singapore : , : Springer Singapore : , : Imprint : Springer, , 2020 |
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ISBN |
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Edizione |
[1st ed. 2020.] |
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Descrizione fisica |
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1 online resource (VIII, 266 p. 240 illus., 220 illus. in color.) |
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Disciplina |
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Soggetti |
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Energy consumption |
Building construction |
Thermodynamics |
Heat engineering |
Heat - Transmission |
Mass transfer |
Energy Efficiency |
Building Physics, HVAC |
Engineering Thermodynamics, Heat and Mass Transfer |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Characteristics of Conventional Heating Technologies -- Fundamentals of Absorption Heating Technologies -- Performance of Air Source Absorption Heat Pump -- Improvement of Air Source Absorption Heat Pump -- Performance of Ground Source Absorption Heat Pump -- Hybrid Ground Source Absorption Heat Pump System -- Advances in Novel Working Fluids for Absorption Heating -- Advances in Waste Heat and Renewable Energy Utilization -- Perspectives on Absorption Heating Technologies. |
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Sommario/riassunto |
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This book offers a comprehensive introduction to novel absorption heating technologies for improving the energy efficiency of heating systems. The proposed low-temperature heating systems, based on an air source absorption heat pump (ASAHP), significantly increase heating efficiency and reduce pollution emissions. As the performance of ASAHPs deteriorates at lower ambient/driving temperatures, a series of |
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advanced cycles is used to extend their applicability, with the compression-assisted ASAHP being the most outstanding example. The book discusses the generator-absorber-heat-exchange ASAHP as a promising solution to make the best of high driving temperatures, an aspect that can be improved further via compression. Further, it addresses the ground source absorption heat pump (GSAHP), which eliminates the soil thermal imbalance of the conventional ground source electrical heat pump (GSEHP), and also reduces the number of boreholes . Various hybrid GSAHP systems are proposed to further enhance applicability, efficiency, and economy: these include a combined GSAHP and GSEHP system, as well as ASAHP and GSAHP systems that incorporate design optimizations. In closing, the book explores the merits of novel working fluids and highlights recent advances concerning waste heat and renewable energy utilization. |
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