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Topic: Classification


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 Stellar classification - Wikipedia, the free encyclopedia
In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics.
The Yerkes spectral classification, also called the MKK system from the authors' initials, is a system of stellar spectral classification introduced in 1943 by William W. Morgan, Phillip C. Keenan and Edith Kellman of Yerkes Observatory.
This classification is based on spectral lines sensitive to stellar surface gravity which is related to luminosity, as opposed to the Harvard classification which is based on surface temperature.
en.wikipedia.org /wiki/Stellar_classification   (2048 words)

  
 classification. The Columbia Encyclopedia, Sixth Edition. 2001-05
The original purpose of biological classification, or systematics, was to organize the vast number of known plants and animals into categories that could be named, remembered, and discussed.
Modern classification is part of the broader science of taxonomy, the study of the relationships of organisms, which includes collection, preservation, and study of specimens, and analysis of data provided by various areas of biological research.
Little interest was shown in classification until the 17th and 18th cent., when botanists and zoologists began to devise the modern scheme of categories.
www.bartleby.com /65/cl/classifi.html   (1431 words)

  
 Classification of Igneous Rocks
For instance, the classification of minerals is based on common anoins since minerals sharing common anions often have similar physical properties (i.e hardness, cleavage etc.).
As discussed earlier, texture is used to subdivide igneous rocks into two major groups: (1) the plutonic rocks, with mineral grain sizes that are visible to the naked eye, and (2) the volcanic rocks, which are usually too fine-grained or glassy for their mineral composition to be observed without the use of a petrographic microscope.
As noted in the sidebar to the left, this is largely a genetic classification based on the depth of origin of the rock (volcanic at or near the surface, and plutonic at depth).
geology.csupomona.edu /alert/igneous/igclass.htm   (1386 words)

  
 Medmicro Chapter 3
Identification is the practical use of classification criteria to distinguish certain organisms from others, to verify the authenticity or utility of a strain or a particular reaction, or to isolate and identify the organism that causes a disease.
Classification and identification of an organism should be based on its overall morphologic and biochemical pattern.
A question of classification that is based on scientific data (for example, whether a species, on the basis of its biochemical or genetic characteristics, or both, should be placed in a new genus or an existing genus) is not settled by the Judicial Commission, but by the preference and usage of the scientific community.
gsbs.utmb.edu /microbook/ch003.htm   (6597 words)

  
 Content Classification [encyclopedia]   (Site not responding. Last check: 2007-10-22)
Classification is needed to provide context for navigation in any knowledge medium, e.g.
Hierarchical classifications are prone to subjectivity and cultural bias.
In a faceted classification scheme, the facets may be considered to be dimensions in a cartesian classification space, and the value of a facet is the position of the artifact in that dimension.
encyclozine.com /Reference/Library/Classification   (1254 words)

  
 Dorlands Medical Dictionary
Angle's classification,   a classification of dental malocclusion based on the mesiodistal (anteroposterior) position of the mandibular dental arch and teeth relative to the maxillary dental arch and teeth; see also malocclusion.
Chicago classification,   the classification of human chromosomes adopted by geneticists at Chicago in 1966 for the identification of chromosomal bands and regions and for the location of structural chromosomal abnormalities.
Lund-Browder classification,   a classification of burn severity in children; it attaches percentages to different body surface areas similarly to the rule of nines used for adults and is modified according to the age of the child.
www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_c_38zPzhtm   (2208 words)

  
 Library of Congress Classification - Open Encyclopedia   (Site not responding. Last check: 2007-10-22)
The classification was originally developed by Herbert Putnam with the advice of Charles Ammi Cutter in 1897 before he assumed the librarianship of Congress.
It was influenced by Cutter Expansive Classification and DDC, designed for the use by the Library of Congress.
It has been criticized as lacking a sound theoretical basis; many of the classification decisions were driven by the particular practical needs of that library, rather than considerations of epistemological elegance.
open-encyclopedia.com /Library_of_Congress_Classification   (276 words)

  
 Group Classification on National ID Cards - Jim Fussell - 15 Nov 2001   (Site not responding. Last check: 2007-10-22)
Group classification on ID cards or other official personal documents (passports, residence permits, etc.) force a person to be affiliated with a governmentally-defined group and expose persons to profiling and human rights abuses based upon their group identity.
Classifications on ID cards are instead a facilitating factor, making it more possible for governments, local authorities or non-state actors such as militias to more readily engage in violations based on ethnicity or religion.
The special significance of classification on the ID cards may be heightened at moments of crisis or in regions of conflict, such as in May 1998 in Indonesia or in Tibet in China.
www.preventgenocide.org /prevent/removing-facilitating-factors/IDcards   (5807 words)

  
 Carnegie Classification of Institutions of Higher Education   (Site not responding. Last check: 2007-10-22)
In this respect, one of the Classification’s strengths is its grounding in objective data on institutional behavior: to the extent that it differentiates institutions by mission, it is mission as revealed in institutional action.
The 2000 edition of the Carnegie Classification retains the basic structure that was established in 1971, with two changes: we have reduced the number of categories of doctorate-granting institutions from four to two, and we have added a new category of baccalaureate colleges.
This ambiguity near category borders is another reason why the Classification should not be interpreted as characterizing the fundamental nature of an institution, and why the rigid typing of institutions based on the Classification may not always be appropriate.
www.carnegiefoundation.org /Classification/CIHE2000/background.htm   (4487 words)

  
 Classification :: Microbiology and Bacteriology :: The world of microbes
The intended use of a classification is an integral part of deciding what properties it should be based upon.
Here are some other classifications that you have encountered: the Library of Congress book classifications (organized by subject); the fiction section in a library (usually organized by the author's last name); and a food store (organized primarily by storage temperature).
An early biological classification is implicit in the ancient Greeks' definition of the three kingdoms: animal, vegetable and mineral.
www.bact.wisc.edu /Microtextbook/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=16&page=1   (787 words)

  
 WHO | The WHO Family of International Classifications
The WHO constitution mandates the production of international classifications on health so that there is a consensual, meaningful and useful framework which governments, providers and consumers can use as a common language.
The basis for the WHO Family of International Classifications and the principles governing the admission of classifications are set out in the paper on the "WHO Family of International Classifications'.
Classifications capture snapshot views of population health using such parameters as death, disease, functionality, disability, health and health interventions, which inform management and decision making process in the health system.
www.who.int /classifications/en   (420 words)

  
 Classification Lab   (Site not responding. Last check: 2007-10-22)
On the Conclusions page, there is a comprehensive essay detailing the radiation of the diversity of life as we know it, beginning at the lifeless Earth and proceeding through the evolution of humans.
Classification is essentially an effort by scientists to discover, reconstruct, and clarify the phylogeny, or evolutionary history, of an organism or group of organisms.
In cladistic analysis, each feature, or character, is viewed as a primitive character (common to an entire group) or a derived character (that arose in the evolution within the group).
sidwell.edu /us/science/vlb5/Labs/Classification_Lab/classification_lab.html   (801 words)

  
 A Definition of Thesauri and Classification as Indexing Tools
There are many classification schemes and there are also many classifications of knowledge which can be confused with bibliographic or documentary classifications as they can both cover a specific field of knowledge or the whole system of knowledge.
The main difference between classification of knowledge and bibliographic classification is that bibliographic/documentary classifications both special, such as NLM, INSPEC etc. or general, such as Dewey Decimal Classification, Library of Congress Classification, Universal Decimal Classification, are indexing systems designed to deal with knowledge recorded in documents.
Knowledge classification can be, and often is, TAXONOMIC (sometimes called 'entity classification') like the classification of zoology, classification of plants, or classification of chemical elements (which means that they are going to list one concept in one place only in the classification structure).
dublincore.org /documents/2000/11/28/thesauri-definition   (1273 words)

  
 PKR Classification   (Site not responding. Last check: 2007-10-22)
We plan on proposing a new systematic protein kinase classification based on clustering of the pairwise BLAST-P E-values yielded from an all-against-all BLAST search of the protein kinases in the current PKR database (5780 sequences).
Classification of Saccharomyces cerevisiae Protein Kinases by Tony Hunter and Gregory D. Plowman
Classification of Histidine Protein Kinases and Response Regulators based on Grebe and Stock 1999 (Adv.
pkr.sdsc.edu /html/classification.shtml   (250 words)

  
 10(v) Soil Classification
The first formal system of soil classification was introduced in the United States by Curtis F. Marbut in the 1930s.
Since 1960, this soil classification system has undergone numerous minor modifications and is now under the control of Natural Resources Conservation Service (NRCS), which is a branch of the Department of Agriculture.
Prior to 1955, systems of classification used in Canada were strongly based on methods being applied in the United States.
www.physicalgeography.net /fundamentals/10v.html   (1707 words)

  
 Faceted Classification   (Site not responding. Last check: 2007-10-22)
A faceted classification differs from a traditional one in that it does not assign fixed slots to subjects in sequence, but uses clearly defined, mutually exclusive, and collectively exhaustive aspects, properties, or characteristics of a class or specific subject.
Most classification experts and professional indexers think of back-of-the-book indexes as very different from classification schema, but a close look at good indexes shows that they exhibit many of the characteristics associated with faceted classification.
One of the primary benefits of faceted classification is that even if you don’t know the name of an object, you can achieve a very accurate shared understanding of what it is by describing it in terms of several mutually exclusive categories of information.
kmconnection.com /DOC100100.htm   (2270 words)

  
 NLM Classification Fact Sheet
The scheme is a system of classification intended to be used for the shelf arrangement of all library materials, regardless of format.
Designed as a broad classification, it is suitable for both large and small library collections and may be adapted to handle specialized collections of any size.
The NLM Classification utilizes schedules QS-QZ and W-WZ, permanently excluded from the LC Classification Schedules and is intended to be used with the LC schedules which supplement the NLM Classification for subjects bordering on medicine and for general reference materials.
www.nlm.nih.gov /pubs/factsheets/nlmclassif.html   (558 words)

  
 Carnegie Classification of Institutions of Higher Education   (Site not responding. Last check: 2007-10-22)
The Carnegie Classification of Institutions of Higher Education is the leading typology of American colleges and universities.
The Carnegie Classification was originally published in 1973, and subsequently updated in 1976, 1987, 1994 and 2000.
After reviewing the Classification's strengths and weaknesses as well as its current uses, the Foundation is undertaking a thorough reassessment of the classification system to be concluded in 2005, the year of the Foundation's centennial.
www.carnegiefoundation.org /Classification   (237 words)

  
 WIPO International Classifications   (Site not responding. Last check: 2007-10-22)
The international classifications established by various classification treaties are essential tools for the proper administration of an intellectual property system in each country.
Without classifications, it would be impossible to handle the enormous number of applications for patents, trademarks and industrial designs.
The symbols of international classifications are allotted by the national or regional industrial property authority and are indicated on patents, trademarks and industrial designs published.
www.wipo.int /classifications/en   (313 words)

  
 Super VLB -- Classification
The classification of organisms is the attempt by biologists to arrange organisms in categories and groups that reflect phylogeny -- the evolutionary history of a group of organisms.
Cladistic classification is concerned only with the order of branching in phylogenetic lingeages.
In classic classification, taxonomists use degrees of divergence in lineages to classify.
www.sidwell.edu /us/science/vlb/class   (487 words)

  
 Classification System
Classification Match scores will be recorded as shown in the Division results for any approved match.
Following this, the Classification will be based on the average of the best 4 scores of the most recent 8 classification records submitted.
The IPSC Classification System requires all participating shooters to be current members of their home Region and to register an IPSC Alias.
www.ipsc.org /ics.htm   (1190 words)

  
 ToL: Phylogeny or Classification
A clear distinction between the concepts of phylogeny and classification is critical for understanding the nature of the project.
Calling "Phylogeny" by the name "classification" confuses and (in the eyes of many) demeans phylogenetic biology in the same way calling "molecular biology" by the name "classification" would.
Most researchers feel that the groups we give names to in our classifications should correspond to single branches or clades on the phylogeny: if we wish to talk about the history of a group, it is easier to do so if the named entities are cohesive portions of that history.
tolweb.org /tree/learn/concepts/classification.html   (463 words)

  
 Features
As we studied several examples of Interactives, we began to see distinct types of visual treatment and interactive strategies emerge, which were used for presenting different types of information about events, processes, mechanisms, cause and effect or phenomena.
The classification is based on the representation of the communicative intent.
But even then, we do acknowledge that there could be reasons to refine this classification, especially to cater to the requirements of different practices such as e-learning.
www.elearningpost.com /features/archives/002069.asp   (1080 words)

  
 Selective Service System: About the Agency - Classifications
Classification is the process of determining who is available for military service and who is deferred or exempted.
Classifications are based on each individual registrant's circumstances and beliefs.
A classification program would go into effect when Congress and the President decide to resume a draft.
www.sss.gov /classif.htm   (277 words)

  
 Taxonomies, Classification, Categorization - SearchTools.com Report
Proposes several ways to make classification easier in organizations, including focusing on information seekers, leveraging existing taxonomies, using the right people and tools, and avoiding up-front universal structures.
Background includes the value of classification within enterprise, how taxonomies facilitate browsing, topical relevance, how classification technology works, and so on.
Complex and individualized indexing schemes tend to move towards the "synthetic", providing standard subdivisions to be applied as appropriate, because of cost, training requirements, human inconsistency and rigidity due to theoretical flaws.
www.searchtools.com /info/classifiers.html   (2009 words)

  
 Classification
The classification system also reflects the manner by which the various groups and species of organisms arose during the course of evolution by branching off ancestral species.
We're suggesting that at a certain point in bird evolution a species arose with a hooked bill and other characteristics today associated with shrikes, and this species became the ancestor of all the many shrikes that exist today, the proto-shrike, the first of its genus.
Once you learn the classification of many organisms you'll see that all the subdivisions actually manifest themselves as branches arising from larger branches.
www.backyardnature.net /classify.htm   (814 words)

  
 Job Evaluation: Methods: Classification   (Site not responding. Last check: 2007-10-22)
Classification Jobs are classified into an existing grade/category structure or hierarchy.
The classification of a position is decided by comparing the whole job with the appropriate job grading standard.
To ensure equity in job grading and wage rates, a common set of job grading standards and instructions are used.
www.hr-guide.com /data/G412.htm   (285 words)

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