Several dentists and patients with special dental problems have experimented with the device.

Several other similar systems also existed with even higher performance, but these often required special cabling that was incompatible with LocalTalk / PhoneNet, and also required patches to the networking stack that often caused problems.

Several concepts that provide alternative definitions for the reaction mechanisms involved and their application in solving related problems exist.

Several fields of discrete mathematics, particularly theoretical computer science, graph theory, and combinatorics, are important in addressing the challenging bioinformatics problems associated with understanding the tree of life.

Several foundation-related engineering problems, such as the Leaning Tower of Pisa, prompted scientists to begin taking a more scientific-based approach to examining the subsurface.

Several algorithms are freely available to solve knapsack problems, based on dynamic programming approach, branch and bound approach or hybridizations of both approaches.

Several serious problems resulted from this:

Several other examples of provable quantum speedups for query problems have subsequently been discovered, such as for finding collisions in two-to-one functions and evaluating NAND trees.

Several theoretical problems have been found with the AAH, and some claims made by the AAH have been challenged as having explanations aside from a period of aquatic adaptation.

Several linguistic problems arise in the attempt to relate Sumerian with known language families.

Several of the fundamental problems caused by the transition to sound were soon solved with new camera casings, known as " blimps ", designed to suppress noise and boom microphones that could be held just out of frame and moved with the actors.

Several other newspapers launched in the 1980s, including the Sunday Correspondent, had collapsed without winning enough readers to be profitable, and The Independent was experiencing similar problems.

Several prominent civil engineer considered the problems of Deeping Fen and the river outfall at the end of the 1700s.

Several studies have shown the importance of the Internet in providing social support, particularly to groups with chronic health problems.

Several of the Hilbert problems have been resolved ( or arguably resolved ) in ways that would have been profoundly surprising, and even disturbing, to Hilbert himself.

" Several mathematicians accepted the challenge, notably Fields Medalist Steve Smale, who responded to a request of Vladimir Arnold by proposing a list of 18 problems.

Several problems with MR led to the development of the newer systems:

Several solutions to these problems were explored in the 1960s.

Several problems of gameplay are left woefully ambiguous or completely untouched in Linnaeus ' notes, and some translations are problematic.

Several essays about aesthetics followed, whereupon Schlick turned his attention to problems of epistemology, the philosophy of science, and more general questions about science.

Several modifications of the basic CSP definition have been proposed to adapt the model to a wide variety of problems.

Several of the processes investigated did not come to fruition owing to political and economic problems but the establishment of the ICI Pruteen process for the production of bacterial SCP for animal feed was a milestone in the development of the fermentation industry.

Several problems are related to shade in pasture areas.

Several radio stations have been forced to drop the program because of this policy, thus reducing Dr. Demento's affiliate count ( seven affiliates in 2008, versus over 100 at its peak ), further exacerbating the show's financial problems.

Several projects resulted in financial problems and many of the new buildings had fire code violations.

Several enumerations have occurred since then, with the most recent two being carried out by Statistics South Africa in 1996 and 2001.

Several are known to have occurred in Indo-European languages, including the presumed original Proto-Indo-European words for bear (* rkso ), wolf (* wlk < sup > w </ sup > o ), and deer ( originally, hart — although the word hart remained commonplace in parts of England until the 20th century as is witnessed by the widespread use of the pub sign The White Hart ).

Several Spanish and Portuguese expeditions occurred in about 1340 around the island and the island were inhabited by Maurs and were afflicted with European slave holders.

Several local raids occurred during her childhood and on one occasion her village was burned.

Several key events occurred, which raised public awareness of the New Age subculture: the production of the musical Hair: The American Tribal Love-Rock Musical ( 1967 ) with its opening song " Aquarius " and its memorable line " This is the dawning of the Age of Aquarius "; publication of Linda Goodman's best-selling astrology books Sun Signs ( 1968 ) and Love Signs ( 1978 ); the release of Shirley MacLaine's book Out on a Limb ( 1983 ), later adapted into a television mini-series with the same name ( 1987 ); and the " Harmonic Convergence " planetary alignment on August 16 and 17, 1987, organized by José Argüelles at Sedona in the U. S. state of Arizona.

Several factors that occurred on that day and the previous days might have contributed to the disaster.

Several epidemics occurred in Baltimore, Memphis and Washington DC between 1865 and 1873.

The Proto – Three Kingdoms period, sometimes called the Several States Period ( 열국시대 ), is the time before the rise of the Three Kingdoms of Korea, which included Goguryeo, Silla, and Baekje, and occurred after the fall of Gojoseon.

Several acquisitions, such as Stratacom, were the biggest deals in the industry when they occurred.

Several papers attached to this report give an account of the number of capital cases that occurred at certain places during a certain period of time.

Several military engagements occurred during the American Civil War about Clinton.

Several other riots have also occurred in the intervening period.

Several changes occurred at Clovis AFB in 1957.

Several major floods have occurred in the area.

Several families settled near Otsego Lake around 1762, but little further development occurred until after the American Revolution.

Several later eruptions occurred over the millennia before the most recent major eruption, which is traditionally dated as about 180 CE from Greenland ice-core records.

Several skirmishes occurred in the vicinity of New Port, namely along Lick Creek to the north and Cosby Creek to the south.

Several collisions have occurred on Washington Metro, resulting in injuries and fatalities, along with numerous derailments with few or no injuries.

Several recordings as The Pretenders occurred during 1993, including a cover version of the Jimi Hendrix's " Bold As Love " for the tribute album Stone Free, and a cover of 10cc's " I'm Not In Love " for the film, Indecent Proposal.

Several collapses and landslides have occurred on Kibo in the past, one creating the area known as the Western Breach.

Several apocryphal accounts of transplants exist well prior to the scientific understanding and advancements that would be necessary for them to have actually occurred.

Several notable incidents of oil leakage have occurred since, including those caused by sabotage, maintenance failures, and gunshot holes.

Several changes occurred during the last half of 1954.

Several mining disasters have occurred in the Zonguldak mines:

Several tax boycotts and attempted murders of tax collectors occurred in Vienna.