Many commercial BBS software companies that continue to support their old BBS software products switched to the shareware model or made it entirely free.

Many civilizations and societies have devised a calendar, usually derived from other calendars on which they model their systems, suited to their particular needs.

Many business applications being written today use the client – server model, as do the Internet's main application protocols, such as HTTP, SMTP, Telnet, and DNS.

Many private firms in the 19th century avoided the corporate model for these reasons ( Andrew Carnegie formed his steel operation as a limited partnership, and John D. Rockefeller set up Standard Oil as a trust ).

Many of his late paintings celebrate farm life, including many where he used his work horse " Rousseau " as a model.

Many textbook writers, including Krugman and Obstfeld and Bowen, Hollander and Viane, are negative about the validity of H-O model.

Many instruments also include a SysEx ID setting, which allows two devices of the same model to be addressed independently while connected to the same system.

( Many tribes adopted constitutions by the 1934 Indian Reorganization Act model, with two-year terms for elected positions of chief and council members deemed too short by the authors for getting things done )

Many economists, even contemporaries, have criticized this model of economic man.

Many see an attempt to model a system as complex as a modern economy by a mathematical model as unrealistic and doomed to failure.

Many cars have had S model features added by subsequent owners, making original " Competition Group " cars difficult to distinguish without checking option codes.

Many South American, Central American, and African nations follow the presidential model.

Many regard the 356 as the first Porsche simply because it was the first model sold by the fledgling company.

Many of the results of quantum mechanics are not easily visualized in terms of classical mechanics — for instance, the ground state in a quantum mechanical model is a non-zero energy state that is the lowest permitted energy state of a system, as opposed to a more " traditional " system that is thought of as simply being at rest, with zero kinetic energy.

Many of these hosts also publish books, write newspaper columns, appear on television, and give public lectures ( Limbaugh, again, was a pioneer of this model of multi-media punditry ).

Many model systems have been developed to better understand interactions between plants and bacterial, fungal, oomycete, viral and nematode pathogens.

Many symphonies are tonal works in four movements with the first in sonata form, which is often described by music theorists as the structure of a " classical " symphony, although many symphonies by the acknowledged classical masters of the form, Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven do not conform to this model.

Many universities in the UK developed independent programmes in economic history rooted in the LSE model.

Many pyramids are more sophisticated than the simple model.

Many such relatively illiquid securities are valued as marked to model, rather than an actual market price.

Many of the most interesting predictions of the autosegmental model derive from the automatic effects of the Well-formedness Condition and their independence of language-particular rules.

# Many organizations revisit their enterprise business model during a downturn to reduce cost through new collaboration and partnership models and by reconfiguring the asset mix.

# Many also rethink their revenue model and value propositions to respond to a different set of customer behaviors and market requirements.

Many groundcrew at the airport work at the airplanes.

Many airports were near Cagliari ( Elmas, Monserrato, Decimomannu, currently a NATO airbase ) from which airplanes could fly to Northern Africa or mainland Italy and Sicily.

Many of the FARs are designed to regulate certification of pilots, schools, or aircraft rather than the operation of airplanes.

Many private airplanes take off and land there every day.

Many of the vortex generator kits available for light twin-engine airplanes bring with them the added benefit of an increase in maximum takeoff weight.

Many different styles of Micros were made including all the popular cars and trucks of the times, trains, emergency vehicles, tanks, boats, airplanes, helicopters, and motorcycles.

Illustration of common trim tab location at the rear of an aircraft. Many airplanes ( including gliders ) have trim tabs on their elevators, as a simple method of providing trim in the longitudinal axis.

Many airplanes also have rudder and / or aileron trim systems.

Many states have laws regulating the use of boat trailers and some have restrictions regarding the age of motor boat operators.

Many of them sincerely believe that the use of liquor in any form or in any degree is intrinsically evil and sinful.

Many people use wicker cradles for old red wine, lifting the bottle carefully from the bin into the cradle and eventually to the table, without disturbing the sediment.

Many languages use modified forms of the Latin alphabet, with additional letters formed using diacritical marks.

Many amateurs use online tools to plan their nightly observing sessions using tools such as the Clear Sky Chart.

Many contemporary Pueblo peoples object to the use of the term Anasazi, although there is still controversy among them on a native alternative.

Many British publications have gradually done away with the use of periods in abbreviations.

Many parents use a collection of simplified or ad hoc signs called " baby sign.

Many countries, including some US states, also permit the use of less severe corporal punishment for children in school.

Many such are localised, and do not form part of general Australian use, while others, such as kangaroo, boomerang, budgerigar, wallaby and so on have become international.

Many of Canberra's suburbs are named after former Prime Ministers, famous Australians, early settlers, or use Aboriginal words for their title.

Many ironclads were built to make use of the ram or the torpedo, which a number of naval designers considered the crucial weapons of naval combat.

Many were in common use, but had become unacceptable in normal discourse before the end of the twentieth century.

Many drugs produce an antidepressant effect, but restrictions on their use have caused controversy and off-label prescription is a risk, despite claims of superior efficacy.

Many dual system television receivers, equipped to receive both analog transmissions and digital transmissions have analog tuner ( television ) receiving capability and must use a television antenna.

Many areas average of rain per week, and these can use a cistern as small as.

Many autonomous homes can reduce water use below per person per day, so that in a drought a month of water can be delivered inexpensively via truck.

Many coal-burning power stations use flue-gas desulfurization ( FGD ) to remove sulfur-containing gases from their stack gases.

Many types of applications use variables representable in eight or fewer bits, and processor designers optimize for this common usage.

Many players, however, prefer to use replacement grips as the final layer.

Many players use a backhand hitting action for returning smashes on both the forehand and backhand sides, because backhands are more effective than forehands at covering smashes directed to the body.

Many of those that have been properly examined show that they continued in use for many centuries, although the interiors were often modified and changed, and they underwent many phases of habitation and abandonment.

Many Internet sites use information and images from the CIA World Factbook.

Many later CPU designs use similar mixed bit width, especially when the processor is meant for general-purpose usage where a reasonable balance of integer and floating point capability is required.

Many printer drivers do not use the text mode at all, even if the printer is capable of it.