The actual number of species in each group depends on the taxonomic classification followed.

Von Strahlenberg's classification was the first attempt at classification of a large number of languages some of which are Altaic.

Cape Verde is a group of arid Atlantic islands which are home to a number of birds and reptiles and constitute a unique ecoregion in the World Wildlife Fund classification.

This gives a large number of separate problems ; for example, the original proofs of existence and uniqueness of the monster totaled about 200 pages, and the identification of the Ree groups by Thompson and Bombieri was one of the hardest parts of the classification.

To construct a Cutter number, a cataloguer consults a Cutter table as required by the classification rules.

Just as in an alphanumeric system, the DDC is hierarchical ; it also uses some aspects of a faceted classification scheme, combining elements from different parts of the structure, to construct a number representing the subject content ( often combining two subject elements with linking numbers and geographical and temporal elements ) and the form of an item, rather than drawing upon a list containing each class and its meaning.

Books are catalogued in ascending numerical order ; when two or more books have the same classification number, the system sub-divides the class alphabetically, by the use of a call number ( usually the first letter, or letters, of the author's last name, or the title if there is no identifiable author.

It is asserted that, as a result, most major academic libraries in the US do not use the DDC because the classification of works in those areas is not specific enough, although there are other reasons that may truly be more weighty, such as the much lower expense of using a unique " pre-packaged " catalog number instead of having highly skilled staff members engaging in the time-consuming development of catalog numbers.

A number of global forest classification systems have been proposed, but none has gained universal acceptance.

The number of guns an individual may own and retain in its home is restricted by a classification: three common handguns, six sporting handguns / long guns, and an unlimited number of hunting long guns.

However, although the number of ranks is unlimited, in practice any classification becomes more cumbersome the more ranks are added.

A library classification is a system of coding and organizing documents or library materials ( books, serials, audiovisual materials, computer files, maps, manuscripts, realia ) according to their subject and allocating a call number to that information resource.

Next, a call number ( essentially a book's address ) based on the classification system in use at the particular library will be assigned to the work using the notation of the system.

Most classification systems like the Dewey Decimal Classification ( DDC ) and Library of Congress classification also add a cutter number to each work which adds a code for the author of the work.

Ligases are classified as EC 6 in the EC number classification of enzymes.

According to these new rules, " mineral species can be grouped in a number of different ways, on the basis of chemistry, crystal structure, occurrence, association, genetic history, or resource, for example, depending on the purpose to be served by the classification.

A major advance came with the work of Koelle, who in his 1854 Polyglotta Africana attempted a careful classification, the groupings of which in quite a number of cases correspond to modern groupings.

One classification of polynomials is based on the number of distinct variables.

During its over 200 year history, the various species of Pterodactylus have gone through a number of changes in classification, and thus have acquired a large number of synonyms.

George Wittkowsky argued that Swift ’ s main target in A Modest Proposal was not the conditions in Ireland, but rather the can-do spirit of the times that led people to devise a number of illogical schemes that would purportedly solve social and economic ills.

Under these schemes, authors are paid a fee for the number of copies of their books in educational and / or public libraries.

As widespread inefficiencies in numbering ( such as the assignment of entire blocks of 10000 numbers to every competing carrier in every small village to support local number portability schemes ) have created shortages of available numbers, these prefixes are often " reclaimed " and issued as standard exchanges, moving the handful of numbers in them to one standard test exchange ( usually 958 ).

Vases of all kinds, carved in marble or other stones, cast or beaten in metals or fashioned in clay, the latter in enormous number and variety, richly ornamented with coloured schemes, and sometimes bearing moulded decoration.

Because of a wine glut ( wine lake ) in the generic production, the price squeeze induced by an increasingly strong international competition, and vine pull schemes, the number of growers has recently dropped from 14, 000 and the area under vine has also decreased significantly.

To increase the number of cooperating CPUs beyond a handful, schemes such as non-uniform memory access ( NUMA ) and directory-based coherence protocols were introduced in the 1990s.

Studies have demonstrated that, due to the high incidence of accidents at these sites, some such segregated schemes can actually increase the number of car-bike collisions.

There are a number of common, standard and manufacturer-driven numbering and coding schemes for diodes ; the two most common being the EIA / JEDEC standard and the European Pro Electron standard:

The continued success of the Docklands redevelopment has prompted a number of further development schemes, including:

CESG runs a number of schemes such as CHECK, CLAS, and CAPS.

The rules also include schemes for providing a larger number of powers to a character for a given cost.

" A number of attempted fire insurance schemes came to nothing, but in 1681 Nicholas Barbon, and eleven associates, established England's first fire insurance company, the ' Insurance Office for Houses ', at the back of the Royal Exchange.

Camp workers laboured on a variety of infrastructure projects, including such things as municipal airports, roads, and park facilities, along with a number of make-work schemes.

Several fretting schemes involve frets that are spaced unevenly to produce " better-sounding " chords in a limited number of keys.

A number of wireless electrical signaling schemes including electrical currents through water and dirt were investigated for telegraphy before practical radio systems became available.

Energy levels are labeled using a number of different schemes such as the j-j coupling method for heavy elements ( Z ≥ 75 ), the Russell-Saunders L-S method for lighter elements ( Z < 20 ), and a combination of both for intermediate elements.

All large-scale isotope separation schemes employ a number of similar stages which produce successively higher concentrations of the desired isotope.

A number of heat-to-electricity schemes have been proposed.

Alternate party diversion is an optional feature of telephone services, whereby a call may be routed to a different number based on time-out and precedence schemes set up by the customer.

* Fast Ethernet # 100BASE-T2 uses PAM-5, which, like ternary, is one of the few modulation schemes that does not use a power-of-two number of symbols.

If a quantum computer with a sufficient number of qubits were to be constructed, Shor's algorithm could be used to break public-key cryptography schemes such as the widely used RSA scheme.

By contrast, Ponzi schemes can survive simply by persuading most existing participants to reinvest their money, with a relatively small number of new participants.