One company instituted, early in 1959, a vertical classification system consisting of four levels.

In spite of the defects in this system, the figures on total population during the late 1930's and again in the early 1950's seem to have represented actual conditions in most districts with approximate fidelity.

Since the adoption of a new constitution, early in 2010, the politics of Angola takes place in a framework of a presidential republic, whereby the President of Angola is both head of state and head of government, and of a multi-party system.

Newly independent Armenia needed the income from foreign sales of Nairit rubber and chemical products, many of which had been assigned exclusively to that plant under the Soviet system and were still unavailable elsewhere to the former Soviet republics in the early 1990s.

The ongoing conflict with Azerbaijan over the ethnic Armenian-dominated region of Nagorno-Karabakh ( which was part of Soviet Azerbaijan ) and the breakup of the centrally directed economic system of the former Soviet Union contributed to a severe economic decline in the early 1990s.

The system was used in Russia as late as the early 18th century when Peter the Great replaced it with Arabic numerals.

These can be as simple as a searchlight for a police helicopter or as complicated as the tactical system for an airborne early warning platform.

Unlike most of the early LAN systems, AppleTalk was not built using the archetypal Xerox XNS system.

In the earliest Indian astronomy texts, the year was believed to be 360 days long, similar to that of Babylonian astrology, but the rest of the early astrological system bears little resemblance.

By the early 1960s, US research on the Nike Zeus missile system had developed to the point where small improvements would allow it to be used as the basis of a " real " ABM system.

In the early 1980s, Clinton made reform of the Arkansas education system a top priority.

The first BBSes used homebrew software, quite often written or customized by the SysOps themselves, running on early S-100 microcomputer systems such as the Altair, IMSAI and Cromemco under the CP / M operating system.

MS-DOS continued to be the most popular operating system for BBS use up until the mid-1990s, and in the early years most multi-node BBSes were running under a DOS based multitasker such as DESQview or consisted of multiple computers connected via a LAN.

In the early 1970s, Sydney Brenner chose it as a model system for studying the way that genes control development.

The BASIC language was also central to the HP Time-Shared BASIC system in the late 1960s and early 1970s, and the Pick operating system.

The barge and canal system contended favorably with the railways in the early industrial revolution prior to around the 1850s – 1960s for example, the Erie Canal in New York State is credited by economic historians with giving the growth boost needed for New York City to eclipse Philadelphia as America's largest port and city but such canal systems with their locks, need for maintenance and dredging, pumps and sanitary issues were eventually outcompeted in the carriage of high-value items by the railways due to the higher speed, falling costs, and route flexibility of Rail transport.

In many different ways, plants can act a little like the ' miners ' canary ', an early warning system alerting us to important changes in our environment.

Thus, a robust surveillance system involving human clinicians and veterinarians may identify a bioweapons attack early in the course of an epidemic, permitting the prophylaxis of disease in the vast majority of people ( and / or animals ) exposed but not yet ill.

In a speech delivered at the nearby Masonic temple, Bush compared the RODS system to a modern " DEW " line ( referring to the Cold War ballistic missile early warning system ).

Early implementations were for the DEC PDP-7 and PDP-11 minicomputers using early Unix, and Honeywell 36-bit mainframes running the operating system GCOS.

After the Congressional hearings in early 2005, and with the scrutiny of the sports and national media upon this issue, Selig put forth a proposal for a stricter performance-enhancing drug testing regime to replace the current system.

Chaosium was an early adopter of licensing out its BRP system to other companies, something that was unique at the time they began but rather commonplace now thanks to the d20 licenses.

An early demonstration of the strength of Gauss's method came when it was used to predict the future location of the newly discovered asteroid Ceres.

Carl Friedrich Gauss wrote a famous paper on the dynamics of an asteroid in his early 20s, which certainly had a European vogue, and was appointed to a chair partly on the strength of this result.

The primordial crust was very thin and was probably recycled by much more vigorous plate tectonics and destroyed by significant asteroid impacts, which were much more common in the early stages of the solar system.

Arthur C. Clarke coined the term in his novel Rendezvous with Rama where SPACEGUARD was the name of an early warning system created following a catastrophic asteroid impact.

Instead, armed with a value for the planet, we can put in place systems that provide early warning and a good measure of the probability of asteroid impact.

Given that the asteroid parent bodies of meteorites were some of the first solid material to condense from the early solar nebula, cosmochemists are generally, but not exclusively, concerned with the objects contained within the solar system.

An asteroid was named in its honour, 64070 NEAT, in early 2005.

Ostro was an early participant in discussion of the asteroid impact hazard, placing particular emphasis on the need to characterize asteroids before any deflection attempt.

M type was one of three basic asteroid types in early classifications ( the others being the S and C types ), and was thought to indicate a metallic body.

Davies has had a longstanding association with the problem of time ’ s arrow, and was also a early proponent of the theory that life on Earth may have come from Mars cocooned in rocks ejected by asteroid and comet impacts.

The Comet Rendezvous Asteroid Flyby ( CRAF ) was a cancelled plan for a NASA led exploratory mission designed by the Jet Propulsion Laboratory during the mid-to-late 1980s and early 1990s, that planned to send a spacecraft to encounter an asteroid, and then to rendezvous with a comet and fly alongside it for nearly three years.

One month early, a controversial advertisement announcing the collision of an asteroid with planet Earth, giving the impression of real news, was used in Brazil to promote the release of C4 Pallas, and there is an asteroid named 2 Pallas.

Other early news media articles of the time discussed the possibility of a large extraterrestrial object strike, such as an asteroid, occurring.

It would be a lot cooler if he was making a Space tourism | space hotel or an asteroid mining facility ; but people thought differently back in the early 1990s.

The asteroid 34420 Peterpau was named in his honour in early 2006.

During the early 1990s, S. Christopher Bennett also published several major papers reviewing the anatomy, taxonomy and life history of Pteranodon.

The taxonomy of the genus Brettanomyces has been debated since its early discovery and has seen many re-classifications over the years.

His research foci have included the evolution and fate of the European Neandertals, the role of culture in early hominid evolution, the nature and explanation of allometry, robust australopithecine evolution, the distribution and explanation of sexual dimorphism, hominid origins, the pattern and explanation of Australasian hominid evolution, the contributions and role of genetics in paleoanthropological research, and the taxonomy of the genus Homo.

In response to the early criticisms of the trait approach, theorists began to research leadership as a set of behaviors, evaluating the behavior of successful leaders, determining a behavior taxonomy, and identifying broad leadership styles.

Sibley and Ahlquist's landmark DNA-DNA hybridisation studies ( see Sibley-Ahlquist taxonomy ) led to them placing the families traditionally contained within the Pelecaniformes together with the grebes, cormorants, ibises and spoonbills, New World vultures, storks, penguins, albatrosses, petrels, and loons together as a sub-group within a greatly expanded order Ciconiiformes, a radical move which by now has been all but rejected: their " Ciconiiformes " merely assembled all early advanced land-and seabirds for which their research technique delivered insufficient phylogenetic resolution.

Sibley developed an interest in hybridisation and its implications for evolution and taxonomy and, in the early 1960s he began to focus on molecular studies: of blood proteins, and then the electrophoresis of egg-white proteins.

It contained an early taxonomy of perceived deviant behavior and proposed guidelines for prosecuting deviant individuals.

Its systematics, phylogeny and taxonomy are subject of considerable debate in the early 21st century.

However, it was not until the use of molecular systematics in the 90s and early 2000s that fungal taxonomy arrived at a consensus.

* A detailed drawing, painting, etc., depicting the plant, from the early days of plant taxonomy.

Sphagnum taxonomy has been very contentious since the early 1900s ; most species require microscopic dissection to be identified.

The taxonomy of Protoavis is controversial, with several palaeornithologists considering it to be an early ancestor of modern birds, while most other in the palaeontological community regard it as a chimaera, a mixture of several specimens.

The herbals represent early attempts to create a coherent system of plant description and are forerunners of today ’ s science of taxonomy.

The Australopithecines separate man from the great apes, and the genus Homo is almost certainly an offshoot of the early australopithecines, upright apes of the wooded savannah ( see human taxonomy ).

However, Justice T. Archbald, who wrote the opinion in the case, disagreed, stating that J. F. Blumenbach's taxonomy, which classified " Malays " and " Mongolians " separately, was the dominant theory through the early 20th century.

* Eichler system, an early system of plant taxonomy