Detecting a blinking pattern in an image sequence can detect the presence of a face.

Detecting the presence or lack of a grid source would appear to be simple, and in the case of a single inverter in any given possible physical island ( between disconnects on the distribution lines for instance ) the chance that an inverter would fail to notice the loss of the grid is effectively zero.

* Detecting bacterial species in suspicious corpses

Detecting phase coupling requires summation over a number of independent samples-this is the first motivation for defining the bicoherence.

* Detecting events, e. g., for visual surveillance or people counting ;

Detecting the B-modes will be extremely difficult, particularly given that the degree of foreground contamination is unknown, and the weak gravitational lensing signal mixes the relatively strong E-mode signal with the B-mode signal.

Detecting a bias that will lead to a favorable outcome takes an impractically large amount of time and is very difficult, if not impossible, to do, therefore people fall prey to the Type II gambler's fallacy.

* Detecting Land Mines: New Technology, by Paul Grad.

Detecting zero current with a galvanometer can be done to extremely high accuracy.

* Detecting transitions is often less error-prone than comparing against a threshold in a noisy environment.

Detecting planets in multiple star systems introduces additional technical difficulties, which may be why they are only rarely found.

Detecting such a pulse means that the bit contained 1.

Detecting deception is difficult because there are no known completely reliable indicators of deception.

* Detecting leaks of natural gas and other gasses.

* Detecting heat in faulty electrical joints.

In 1901, Sir Jagadish Chandra Bose filed for a US patent for " A Device for Detecting Electrical Disturbances " that mentioned the use of a galena crystal ; this was granted in 1904, # 755840.

Detecting the thermal into which to launch is vital and can involve several methods, ranging from radio telemetered temperature and windspeed measurements plotted on a chart recorder to Mylar streamers or soap bubbles to visualize the rising air.

Detecting the types and amounts of different sulfated steroids conveys information about the urine donor's physiological state, and may therefore serve as an honest signal.

* A Treatise on Adulterations of Food and Culinary Poisons: Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spirituous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy, and Methods of Detecting Them, London 1820, Second edition 1820, Third edition 1821, Fourth edition 1822 ; reprint Philadelphia 1820 ; German translation by L. Cerutti Von der Verfälschung der Nahrungsmittel und von den Küchengiften, Leipzig 1822, Second edition 1841

Detecting spam based on the content of the email, either by detecting keywords such as " viagra " or by statistical means ( content or non-content based ), is very popular.

Detecting the destructive thought pattern previously gives objectivity and clarity to negate it as it rises.

Detecting such constants in files is a simple and effective way of distinguishing between many file formats and can yield further run-time information.

Detecting phase differences is very important in many applications, such as motor control, radar and telecommunication systems, servo mechanisms, and demodulators.

Detecting link rot for a given URL is difficult using automated methods.

" Detecting Equality of Variables in Programs.

Detecting cheating in general online play may be more difficult than at physical events, and network latency may negatively impact players ' performance, especially at high levels of competition.

Detecting their arrival with radar, Fligerkorps II immediately attacks their airfields, destroying almost all of them within three days.

Detecting the condition in early childhood increases the chance of successful treatment, especially if detected before the age of five.

The ELISA ( enzyme-linked immunosorbent assay ) test can be the first step in non-culture methods of identifying P. ramorum, but it can only be a first step, because it detects the presence of proteins that are produced by all Phytophthora species.

The name thyroid-stimulating hormone ( TSH ) has been given to a substance found in the anterior pituitary gland of all species of animal so tested for its presence.

The presence of a particular species in an area may be more easily discerned by its characteristic call than by a fleeting glimpse of the animal itself.

# Rapid speciation: presence of one or more bursts in the emergence of new species around the time that ecological and phenotypic divergence is underway.

Effects such as superposition of differing ions with multiple electrons removed, or through the presence of complex species formation during evaporation may cause two or more species to have sufficiently close time-of-flights to make definitive identification impossible.

By studying how quickly the reagent species disappears in the presence of differing concentrations of a ( usually stable ) co-reagent species the reaction rate constant at the low temperature of the CRESU flow can be determined.

Foxes are readily found in cities and cultivated areas and ( depending upon species ) seem to adapt reasonably well to human presence.

To account for the presence of multiple species in a non-dilute mixture, several variations of the Maxwell-Stefan equations are used.

The island habitat has suffered from the presence from multiple invasive exotic species.

This evidence remains inconclusive as it excludes the photographic or DNA evidence that many experts cite as necessary before the presence of the species can be confirmed.

Microbial transformation with plasmid DNA is neither parasitic nor symbiotic in nature, because each implies the presence of an independent species living in a commensal or detrimental state with the host organism.

The protein content of peroxisomes varies across species, but the presence of proteins common to many species has been used to suggest an endosymbiotic origin ; that is, peroxisomes evolved from bacteria that invaded larger cells as parasites, and very gradually evolved a symbiotic relationship.

Unfortunately, ambitious and uncalculated construction schemes, political unrest and an ever present international conflict, and presence of the most lucrative world supply of oil, along with lack of cooperation between Arab states and Iran, has had a negative impact on the survival of many marine species, including dugongs.

Recent genetic testing has revealed the presence of unique genetic markers, indicating that it may develop into a separate species,

In 2007, paleontologists reported the discovery of quill knobs on a well-preserved Velociraptor mongoliensis forearm from Mongolia, confirming the presence of feathers in this species.

Furthermore, they noted that quill knobs are almost never found in flightless bird species today, and that their presence in Velociraptor ( presumed to have been flightless due to its relatively large size and short forelimbs ) is evidence that the ancestors of dromaeosaurids could fly, making Velociraptor and other large members of this family secondarily flightless, though it is possible the large wing feathers inferred in the ancestors of Velociraptor had a purpose other than flight.

For quadrupedal species, there are numerous gaits which may be termed walking or running, and distinctions based upon the presence or absence of a suspended phase or the number of feet in contact any time do not yield mechanically correct classification.

This is due mainly to the fact that these species can grow in the presence of high sucrose, ethanol, acetic acid, sorbic acid, benzoic acid, and sulphur dioxide concentrations, representing some of the commonly used food preservation methods.

As a gas is heated, electrons begin to leave the atoms, resulting in the presence of free electrons, which are not bound to nuclei, and ions, which are chemical species that contain unequal number of electrons and protons, and therefore possess an electrical charge.

The European edible frog appear a species, but is actually semi-permanent hybrids between pool frogs and marsh frogs, the edible frog population being dependent on the presence of at least one of the parents species to be maintained.

The great white is an epipelagic fish, observed mostly in the presence of rich game, such as fur seals, sea lions, cetaceans, other sharks, and large bony fish species.

In the late 1930s, the presence of a very hot, tenuous gas surrounding the Sun was inferred indirectly from optical coronal lines of highly ionized species.