Xem 1-20 trên 56 kết quả Further dependencies
  • Relation Decomposition and Insufficiency of Normal Forms (cont.): Attribute preservation condition: Each attribute in R will appear in at least one relation schema Ri in the decomposition so that no attributes are “lost”. Another goal of decomposition is to have each individual relation Ri in the decomposition D be in BCNF or 3NF. Additional properties of decomposition are needed to prevent from generating spurious tuples

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  • This paper focuses on the exploration of term dependence in the application of sentence retrieval. The adjacent terms appearing in query are assumed to be related with each other. These assumed dependences among query terms will be further validated for each sentence and sentences, which present strong syntactic relationship among query terms, are considered more relevant. Experimental results have fully demonstrated the promising of the proposed models in improving sentence retrieval effectiveness. ...

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  • In this paper, we explore correlation of dependency relation paths to rank candidate answers in answer extraction. Using the correlation measure, we compare dependency relations of a candidate answer and mapped question phrases in sentence with the corresponding relations in question. Different from previous studies, we propose an approximate phrase mapping algorithm and incorporate the mapping score into the correlation measure. The correlations are further incorporated into a Maximum Entropy-based ranking model which estimates path weights from training.

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  • Chapter 11 present the contents: Designing a set of relations, properties of relational decompositions, algorithms for relational database schema, multivalued dependencies and fourth normal form, join dependencies and fifth normal form, inclusion dependencies, other dependencies and normal forms.

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  • Natural Resources and Economic Development explores a key para- dox: why is natural resource exploitation not yielding greater benefits to the poor economies of Africa, Asia and Latin America? Part One examines this paradox both through a historical review of resource use and development and through examining current theories that explain the under-performance of today’s resource-abundant economies, and proposes a frontier expansion hypothesis as an alter- native explanation.

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  • This report describes the main quantitative investment regulations applied to pension funds in OECD and selected non-OECD countries as of December 2010. The questionnaire covers all types of pension plans financed via pension funds. Where regulations vary depending on the type of plan (occupational, personal, mandatory, voluntary, DB, DC, etc), the tables identify the types of plan that the investment regulations apply to.

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  • The source of project ideas may come from a variety of sources, most importantly from prospective implementing partners (either partner governments, non-state actors or multi-lateral or regional development agencies). Local ownership of, and commitment to, potential projects is a key quality assessment criterion. Furthermore, project ideas should be drawn from the priorities and targets identified in the relevant Country Strategy Paper and National Indicative Programme.

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  • These criteria are classified into its safety profile, performance within the GI tract and technological aspects of its development. The criteria are further dependent on the specific purpose of the strain and on the location for the expression of the specific property. With regards to safety, the probiotic strain must be of human origin, isolated from the gastrointestinal tract (GIT) of healthy individuals.

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  • Decarbonising the world‟s energy system to avoid locking-in polluting technologies and unacceptably high emission levels will require doubling existing investment levels to around USD 2 trillion a year or 2% of GDP. Governments understand that large sums of capital will be required, and many are also realising the need for further recourse to private capital as public finances have become strained in many developed countries. Simultaneously, banking sector provision of long-term finance has become tighter due deleveraging and new financial regulations.

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  • Soft dents or ripples can be repaired easily, but if the damage has resulted in gouges or sharp creases anywhere on the panel this will have caused the metalwork to stretch, subsequently involving a lot more work to restore the panel to its original contours. The damaged area almost always extends well beyond the obvious dents, with a slightly shallow `extension' to the damage. Depending on the access and clearance behind the damaged area, use a metal or wooden panel block under the panel supporting the deepest parts of the damage. Using a light hammer tap around the edges...

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  • Replacing body side or quarter panels involves quite a bit more work, as most of the interior/boot trim will need to be removed, as well as rear windows and possibly rear screen. Check the glasswork section if needed. Fuel tanks or other mechanical items may need to be removed, depending on the particular vehicle. Sills and pillars must be checked for internal sound deadening, wiring or pipes. Before removing any of the old panel, make sure you have the new panel at hand. This way you can see exactly how much new panel you get, and also if any...

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  • Because this document is a benchmark, it does not cover the important requirements that cannot be benchmarked, such as requirements for integration with existing systems (agent vs. agent-less, transport mechanism, ports and protocols, interface with change control, usability of user interface, storage type, integration with physical security systems, etc.).

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  • Recently, we have shown that phenyl hydroquinone, a hepatic metabolite of the Ames test-negative carcinogen o-phenylphenol, efficiently induced aneuploidy in Saccharomyces cerevisiae. We further found that phenyl hydroquinone arrested the cell cycle at G1 and G2 ⁄M. In this study, we demonstrate that phenyl hydroquinone can arrest the cell cycle at the G2 ⁄M transition as a result of stabilization of Swe1 (a Wee1 homolog), probably leading to inactivation of Cdc28 (a Cdk1⁄Cdc2 homolog).

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  • Nitrogen monoxide (NO) is a cytotoxic effector molecule produced by macrophages that results in Fe mobilization from tumour target cells which inhibits DNA synthesis and mitochondrial respiration. It is well known that NO has a high affinity for Fe, and we showed that NO-mediated Fe mobilization is markedly potentiated by glutathione (GSH) generated by the hexose monophosphate shunt [Watts, R.N. & Richardson, D.R. (2001) J. Biol. Chem. 276, 4724–4732]. We hypothesized that GSH completes the coordination shell of an NO–Fe complex that is released from the cell.

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  • Increasingly, the ME industry is required to cope with more severe market fluctuations than most other branches of industry. As on of the prime supplying industries of capital goods, it is highly dependent on the investment activity of the purchasing companies, which are highly sensitive to developments in the economy as a whole. This applies above all to industry’s investments in equipment and machinery, into which most ME products flow either directly or indirectly.

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  • The production and further metabolism of inositol 1,4,5-trisphosphate [Ins(1,4,5)P3] require several calcium-dependent enzymes, but little is known about subsequent calcium-dependent changes in cellular Ins(1,4,5)P3.

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  • The TCP/IP protocol suite has become the de facto standard for computer communications in today's networked world. The ubiquitous implementation of a specific networking standard has led to an incredible dependence on the applications enabled by it. Today, we use the TCP/IP protocols and the Internet not only for entertainment and information, but to conduct our business by performing transactions, buying and selling products, and delivering services to customers.

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  • TWO-PORT NETWORKS Electronic circuits are frequently needed for processing a given electrical signal to extract the desired information or characteristics. This includes boosting the strength of a weak signal or ®ltering out certain frequency bands and so forth. Most of these circuits can be modeled as a black box that contains a linear network comprising resistors, inductors, capacitors, and dependent sources. Thus, it may include electronic devices but not the independent sources. Further, it has four terminals, two for input and the other two for output of the signal....

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  • After opening a new class of chemical reactions in 1964, reactions in which unpaired electrons of stable radicals were not involved, nitroxide (aminoxyl) radicals became one of the most interesting and rapidly developing area of modern physical chemistry with their application to biophysics, molecular biology, polymer sciences and medicine. Further development of this field depends on new pathways in the nitroxide chemistry, modern methods in EPR spectroscopy and revealing new perspective practical approaches....

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  • Furthermore, martensite, which is characterised by an acicular appearance, forms progressively over a temperature range as the temperature falls; if the temperature is held constant after the start no further action takes place. Martensite formation produces an expansion related to the carbon content. The mechanical properties of martensite depend on the carbon content; low carbon martensites (less than O.

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