Bistability can be generated by a positive feedback loop with an ultrasensitive regulatory step.

Bistability can only arise in biological and chemical systems if three necessary conditions are fulfilled: positive feedback, a mechanism to filter out small stimuli and a mechanism to prevent explosions.

Bistability as applied in the design of mechanical systems is more commonly said to be " over centre " -- that is, work is done on the system to move it just past the peak, at which point the mechanism goes " over centre " to its secondary stable position.

Bistability is a fundamental phenomenon in nature.

Bistability is key for understanding basic phenomena of cellular functioning, such as decision-making processes in cell cycle progression, cellular differentiation, and apoptosis.

Bistability is often accompanied by hysteresis.

`` That is, if we can be sure this is Colcord's money '' --

It'll probably be at least an hour or two before I can check back with you.

Even as I said it I realized that an education can be invaluable.

Within their confines, moreover, technological and industrial growth has proceeded at an accelerated pace, thus increasing the cornucopia from which material wants can be satisfied.

And no messages can be transmitted on these circuits until senders and receivers authenticate in advance, by special codes, that the messages actually come from their purported sources.

Additional codes can be used to challenge and counterchallenge the authentications.

Nobody can be absolutely certain of the answers.

All can be connected with the gold circuit from their homes.

The box is internally wired so the door can never be opened without setting off a screeching klaxon ( `` It's real obnoxious '' ).

Unless all gadgets are properly operated -- and the wires and seals from the handles removed first -- no damage can be done.

I do not know if such a way of life can come to be a self-conscious challenge, but I suspect that it can.

As his disciples boast, even though his emphasis is elsewhere, Faulkner does show his awareness of the changing order of the South quite keenly, as can be proven by a quick recalling of his Sartoris and Snopes families.

An order can be chanced rather than chosen, and this approach produces an experience that is `` free and discovered rather than bound and remembered ''.

And any sequence can not only change its positions in the work but can even be eliminated from it altogether.

When it comes to this, I shall prefer emigrating to some country where they make no pretence of loving liberty -- to Russia, for instance, where despotism can be taken pure, without the base alloy of hypocrisy '' ( His emphasis )

Something of this can be learned from `` The Way To The Churchyard '' ( 1901 ), an anecdote about an old failure whose fit of anger at a passing cyclist causes him to die of a stroke or seizure.

Similarly experience itself can be conventionalized so that people react to certain preconceived clues for behavior without awareness of the vitality of their experiential field.

When words can be used in a more fresh and primitive way so that they strike with the force of sights and sounds, when tones of sound and colors of paint and the carven shape all strike the sensibilities with an undeniable force of data in and of themselves, compelling the observer into an attitude of attention, all this imitates the way experience itself in its deepest character strikes upon the door of consciousness and clamors for entrance.

it can be changed ; ;

You've already sent your daughter to Miss X's select academy for girls and your son to Mr. Y's select academy for boys, and you can be as liberal as you please with strict impunity.

In scope and power it can only be compared to Tolstoy's War And Peace.

However, for convenience we will stick to the idea that information can be classified according to Table 1.

Since the hazards of poor communication are so great, p can be justified as a habitable site only on the basis of unusual productivity such as is made available by a waterfall for milling purposes, a mine, or a sugar maple camp.

In this case also the design of the thermometer can be modified to reduce the helium film flow.

There is one exception to the above statement as has been pointed out, and that is that fluids can relax by flowing into fields of lower rates of shear, so the statement should be modified by stating that the mechanics are similar.

In the third book, Dürer gives principles by which the proportions of the figures can be modified, including the mathematical simulation of convex and concave mirrors ; here Dürer also deals with human physiognomy.

Depending on how much the paint is diluted ( with water ) or modified with acrylic gels, media, or pastes, the finished acrylic painting can resemble a watercolor or an oil painting, or have its own unique characteristics not attainable with other media.

Proteins can also be modified to include non-peptide components, such as saccharide chains and lipids.

Also, using microbial methods, bacteria can be suitably modified to be effective in only a narrow environmental range, the range of the target that distinctly differs from the army on the offensive.

For example, oilseed can be modified to produce fatty acids for detergents, substitute fuels and petrochemicals.

This microprogram is sometimes rewritable so that it can be modified to change the way the CPU decodes instructions even after it has been manufactured.

Developer documentation may also exist, either with the code as comments and / or as separate files, detailing how the programs works and can be modified.

Church subsequently modified his methods to include use of Herbrand – Gödel recursion and then proved ( 1936 ) that the Entscheidungsproblem is unsolvable: There is no generalized " effective calculation " ( method, algorithm ) that can determine whether or not a formula in either the recursive-or λ-calculus is " valid " ( more precisely: no method to show that a well formed formula has a " normal form ").

Files on a computer can be created, moved, modified, grown, shrunk and deleted.

For instance, Microsoft Word files are normally created and modified by the Microsoft Word program in response to user commands, but the user can also move, rename, or delete these files directly by using a file manager program such as Windows Explorer ( on Windows computers ) or by command lines ( CLI ).

When this flag is turned on for a file ( which can be accomplished by a computer program or by a human user ), the file can be examined, but it cannot be modified.

The frequency of the air column's vibration can be modified by changing the lip aperture or " embouchure ".

This can serve to apply the correct conventions used for alphabetical ordering in the language in question, dealing properly with differently cased letters, modified letters, digraphs, particular abbreviations and so on, as mentioned above under Alphabetical order, and in detail in the Alphabetical order article.

A few English words can only be distinguished from others by a diacritic or modified letter, including animé, exposé, lamé, maté, öre, øre, pâté, piqué, rosé, and soufflé.

The double-slit apparatus can be modified by adding particle detectors positioned at the slits.

The recognizer can be easily modified to create a parse tree as it recognizes, and in that way can be turned into a parser.

Existing structures can be modified by seismic retrofitting to improve their resistance to earthquakes.

The following short examples illustrate some of the ways that standard English writing can be modified to use E-Prime.

Splicing can be experimentally modified so that targeted exons are excluded from mature mRNA transcripts by blocking the access of splice-directing small nuclear ribonucleoprotein particles ( snRNPs ) to pre-mRNA using Morpholino antisense oligos.

Some basic emotions can be modified to form complex emotions.