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Topic: Abstract structure


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In the News (Fri 24 May 19)

  
  Abstract structure - Wikipedia, the free encyclopedia
An abstract structure may be represented (perhaps with some degree of approximation) by one or more physical objects - this is called an implementation or instantiation of the abstract structure.
In this abstract structure, the king, for example, is defined as a piece that can move one square in any direction (except that it may not move onto a square that is under attack by an enemy piece).
Euclidean geometry is an abstract structure, but the theory of continental drift is not, because it depends on the geology of the Earth.
en.wikipedia.org /wiki/Abstract_structure   (502 words)

  
 Abstract - Wikipedia, the free encyclopedia
Abstract structure, a set of rules, properties and relationships that is defined independently of any physical objects
Abstract class, a class in object-oriented programming that is designed only as a parent class and from which child classes may be derived, and which is not itself suitable for instantiation
Abstract hip hop, a subgenre of alternative hip hop distinguished principally on the content of the lyrics
en.wikipedia.org /wiki/Abstract   (270 words)

  
 [No title]
It is argued that the abstract structure of states of consciousness is given by the octonionic division algebra.
The quaternion structure is interpreted as a "perceptual-cognitive-active loop," representing the basic structure of engagement with the world.
This is a simple algebraic structure which is distinguished by the odd "twist" of the multiplication table according to which any two of the three quantities {i,j,k} are sufficient to produce the other.
www.goertzel.org /dynapsyc/1996/consalg.html   (12356 words)

  
 Kim, LICENSING PRINCIPLES AND PHRASE STRUCTURE: Abstract
Phrase structure will be derived as output of universal principles at each level of syntactic representation, rather than being stipulated as input.
A 'Licensed Structure' is a well-formed phrase structure derived from universal principles such as Case and Theta Theory.
In a principle-based Licensed Structure, the notions of 'specifier,' 'complement,' 'head,' 'maximality,' 'subject,' and 'topic' are consequently derived from non-phrase structure origins by means of the Licensing Principle.
ling.wisc.edu /abstracts/yskim.htm   (303 words)

  
 Publications related to quaternary structure
Abstract: Neurodegenerative diseases are characterised by the presence of filamentous aggregates of protein.
Abstract: A survey was compiled of several characteristics of the intersubunit contacts in 58 oligomeric proteins, and of the intermolecular contracts in the lattice for 223 protein crystal structures.
Abstract: X-ray or NMR structures of proteins are often derived without their ligands, and even when the structure of a full complex is available, the area of contact that is functionally and energetically significant may be a specialized subset of the geometric interface deduced from the spatial proximity between ligands.
pqs.ebi.ac.uk /pqs_pubs.html   (19243 words)

  
 The Manson Impact Structure: A Late Cretaceous Meteor Crater in the Iowa Subsurface
In the late 1980s the Manson Impact Structure was linked to one of the Earth's greatest extinctions of life (including dinosaurs) at the end of a period of geologic time called the Cretaceous (about 65 million years ago).
Preliminary Investigation of the Clay Mineralogy of Sedimentary Clast Breccias Recovered by Core Drilling in the Manson Impact Structure (Abstract)
Sedimentary-Clast Breccias of the Manson Impact Structure, Iowa (Abstract)
www.igsb.uiowa.edu /inforsch/m_i_s.htm   (773 words)

  
 The Zephyr Abstract Syntax Description Language
Figure 2 is a description of the lexical structure of tokens used in the ASDL grammar in Figure 1.
A proposal for the abstract syntax of ASDL was written using the algebraic data type notation of ML.
As long as the abstract structure of the pickles and concrete syntax stay unchanged, changes to the details of the pickle format or concrete syntax have little impact on the browser.
www.cs.princeton.edu /~danwang/Papers/dsl97/dsl97.html   (6337 words)

  
 Blackwell Thesis - Diagrams and Abstract Structure Generation
That abstract and concrete diagrams might be prepared as different image types, and that different secondary tasks would therefore have different inhibitory effects on planning each device type, possibly interacting with the two types of editor.
With the abstract end of the scale defined as 0, and the concrete end as 150, the mean point of all marks made by participants was toward the concrete end, at 94 mm.
All "abstract" devices from the earlier experiments had mean positions closer to the abstract end of the scale than this, and all of the "concrete" devices had mean positions closer to the concrete end.
www.cl.cam.ac.uk /~afb21/publications/thesis/chapter5.html   (11406 words)

  
 Abstract Structure   (Site not responding. Last check: 2007-11-03)
This notion of property is quite abstract, and it will therefore be helpful to develop some intuition about it to demonstrate its relationship to more conventional notions of property.
With this language we can equip A with the structure of a join-semilattice by listing one such property for each pair a,b in A, choosing c to be whatever the join of a and b happens to be in that semilattice.
In particular we can specify an arbitrary partial order by listing only those triples (a,b,c) such that a and b are comparable in that order, in which case c will always be the larger of a and b, being their improper join.
boole.stanford.edu /parikh/node5.html   (988 words)

  
 Using ASN.1 (Abstract Syntax Notation 1): A Data Description Language
Bethesda, MD Abstract Syntax Notation 1 (ASN.1) is used to describe the structure of data to be transferred between the Application Layer and the Presentation Layer of the Open Systems Interconnection (OSI) (next generation networking protocol).
Data structures that prove to be useful can be re-used in a variety of ways--by large public databases, by small private databases, in various software tools, and in assorted data files.
A tool that automatically generates large elaborate data structures and lots of code to parse the stream, generate the structures, and store them in memory is inappropriate for such an application.
www.nal.usda.gov /pgdic/Probe/v2n2/using.html   (1236 words)

  
 Instructions for Abstract Structure and Content   (Site not responding. Last check: 2007-11-03)
Abstracts must be typed or word-processed and submitted on the official form.  Please see the Electronic Submissions page for instructions on how to submit your Abstract via the web.
The Abstract text must be written inside the frame provided without margins and under appropriate headings.
Abstracts which have been presented or published elsewhere, or submitted to any other national or international conference may not be submitted. 
www.bps.org.uk /ni/conference/abstract.cfm?templatetheme=default   (341 words)

  
 ISMB 2005: Michigan, June 25-29
Abstract: Prediction and thermodynamic analysis of secondary structure formation in a genome-wide set of transcripts from Brucella suis 1330 demonstrates that the properties of the target molecule have the potential to strongly influence the rate and extent of hybridization between transcript and tethered oligonucleotide probe in a microarray experiment.
Abstract: A novel diresidue neural network approach is used for the prediction of the cysteine disulfide connectivity and for the discrimination between ligand-bound, disulfide bond-involved and free cysteines.
Abstract: A framework for hypothesis formation is presented, which supports: seamless integration of hypothesis formation with elaboration tolerant knowledge representation and non-monotonic reasoning; use of various resources of biological data as well as human expertise to intelligently generate hypotheses; and ranking hypotheses and for designing experiments to verify hypotheses.
www.iscb.org /ismb2005/posters_list.html   (13873 words)

  
 structure()   (Site not responding. Last check: 2007-11-03)
An interface describing the behavior of linear data structures, structures that that have completely determined add and remove methods.
Abstract base class for portable iterator and enumeration implementation.
An abstract implementation of a basic, mutable data structure.
www.stanford.edu /~almirm/docs/structure/package-summary.html   (654 words)

  
 Object-Oriented Programming using C++
Once a new employee is ``created'' the data structure is filled with actual values: You now have an instance of an abstract employee.
To represent a complex number it is necessary to define the data structure to be used by its ADT.
Let's summarize this: The separation of data structures and operations and the constraint to only access the data structure via a well-defined interface allows to choose data structures appropriate for the application environment.
brain.com.pk /~mnk/Spring2002/OOP/6.htm   (646 words)

  
 3 Abstract Data Types   (Site not responding. Last check: 2007-11-03)
To sum up, abstraction is the structuring of a nebulous problem into well-defined entities by defining their data and operations.
Figure 3.2 shows an ADT which consists of an abstract data structure and operations.
As ADTs provide an abstract view to describe properties of sets of entities, their use is independent from a particular programming language.
www1.math.luc.edu /~zdu1/tutorial/node4.html   (1979 words)

  
 Inherited Structure   (Site not responding. Last check: 2007-11-03)
In the next section we shall define a general but extremely austere notion of structure.
The class of all relational structures of a given signature is closed under both arbitrary product and substructure.
What is remarkable about this is that the notion of continuity was defined without reference to that structure, regardless of how rich or combinatorially complex that structure might be.
boole.stanford.edu /parikh/node4.html   (755 words)

  
 PHC407d: Structure of Abstract   (Site not responding. Last check: 2007-11-03)
The abstract is a key feature of a scientific paper or poster presentation.
The abstract often enables another researcher to estimate whether your work likely is relevant to their research problem.
Some allow a free-form description of the work, while others specify the subsections that must be included.
www.pharmacy.buffalo.edu /phc/courses/phc407/phc407d/Abstract   (174 words)

  
 Problems and Perspectives in Computational Molecular Biology
abstract, paper (2) Coevolving Protein Residues: Maximum Likelihood Identification and Relationship to Structure.
The course addresses methodological approaches to sequence and structure analysis, function prediction, study of evolutionary relationships, and analysis of large biological system.
Shindyalov, I. \& Bourne, P. Protein structure alignment by incremental combinatorial extension (CE) of the optimal path.
www.cs.cornell.edu /Courses/cs726/2002sp   (925 words)

  
 Arch Gen Psychiatry -- Abstract: The Structure of Genetic and Environmental Risk Factors for Anxiety Disorders in Men ...
Arch Gen Psychiatry -- Abstract: The Structure of Genetic and Environmental Risk Factors for Anxiety Disorders in Men and Women, February 2005, Hettema et al.
The Structure of Genetic and Environmental Risk Factors for Anxiety Disorders in Men and Women
Conclusions  The underlying structure of the genetic and
archpsyc.ama-assn.org /cgi/content/abstract/62/2/182   (304 words)

  
 YAPC 2001: Abstract structure   (Site not responding. Last check: 2007-11-03)
This diagram is intended to represent the abstract structure of a web application based on HTML::Mason.
There are many variations on this pattern, using various underlying software packages in addition to the web server and DBMS.
In general, control and input data flows from the lower left to the top layer and then down to the DBMS.
www.ipl.org /div/papers/yapc-2001-mason/bigpicture.html   (99 words)

  
 Terms and Definitions Index by Type
This is the web page of terms with definitions organized by type.
That is, whether the term is an algorithm, a definition, a problem, or data structure.
We also list all entries with links to implementations and entries by area, for instance, graphs, trees, sorting, etc.
www.nist.gov /dads/termsType.html   (91 words)

  
 The Epidermal Growth Factor Receptor: From Mutant Oncogene in Nonhuman Cancers to Therapeutic Target in Human Neoplasia ...
ABSTRACT: Approximately two decades ago, the epidermal growth
based on the known structure and function of the EGFR, are discussed.
The first strategy involves the development of humanized monoclonal
www.jco.org /cgi/content/abstract/19/suppl_1/32s   (533 words)

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