Determining an instance of the membership problem ; i. e. given a string, determine whether where is the language generated by some grammar ; is also known as parsing.

Determining a precise value for a particular knot is difficult because many factors can affect a knot efficiency test: the type of fiber, the style of rope, the size of rope, whether it is wet or dry, how the knot is dressed before loading, how rapidly it is loaded, whether the knot is repeatedly loaded, and so on.

Determining whether a particular event or proceeding constitutes the commencement of adversarial criminal proceedings requires both an examination of the rules of criminal procedure for the jurisdiction in which the crime is charged and the Supreme Courts cases dealing with the issue of when formal prosecution begins.

Now we consider the set of all normal sets, R. Determining whether R is normal or abnormal is impossible: If R were a normal set, it would be contained in the set of normal sets ( itself ), and therefore be abnormal ; and if R were abnormal, it would not be contained in the set of all normal sets ( itself ), and therefore be normal.

Determining whether a given food should be classified as bread, cake, or pastry can be difficult.

Determining whether a captive should be classified as a prisoner of war is the sole purpose of a competent tribunal.

Determining whether an employee has custody or possession can be difficult.

Determining the appropriate discount rate is the key to properly valuing future cash flows, whether they be earnings or obligations.

Determining whether the principal is " disabled " enough to initiate this type of representation is a formal process.

Determining whether a player is in " active play " can be complex.

Determining whether a particular person had lawful possession or mere custody is sometimes extremely difficult.

Determining whether news is " good " or " bad " must be determined by the price action of the stock, because the market reaction may not match the tone of the news itself.

Determining whether the navel is displaced is done by the following procedure,

Determining whether such paths and cycles exist in graphs is the Hamiltonian path problem, which is NP-complete.

Determining whether the victim obtained title or possession can present problems.

Determining whether a reversal is the start of a new trend or a temporary movement in the current trend is not easy.

Determining whether a cutting fluid should be used, and, if so, choosing the proper cutting fluid, is usually included within the scope of cutting condition.

Determining whether any changes have been made to a message ( or a file ), for example, can be accomplished by comparing message digests calculated before, and after, transmission ( or any other event ).

Determining whether blood is in gastric contents, either vomited or aspirated specimens, is surprisingly difficult.

Determining whether there is an isomorphism between two graphs is also an important problem in computational complexity theory ; see graph isomorphism problem.

* Determining whether or not a knot is trivial is known to be in the complexity class NP

Determining whether a particular reaction is conrotatory or disrotatory can be accomplished by examining the molecular orbitals of each molecule.

Determining whether socioeconomic or political factors are more important in explaining government action is a familiar theme.

Determining the composition of the Memorial depends on the dates of Nehemiah's mission: It is commonly accepted that " Artaxerxes " was Artaxerxes I ( there were two later kings of the same name ), and that Nehemiah's first period in Jerusalem was therefore 445-433 BC ; allowing for his return to Susa and second journey to Jerusalem, the end of the 5th century BC is therefore the earliest possible date for the Memorial.

Determining styles in capoeira is a very tough task, since there was never a unity in the original capoeira, or a teaching method before the decade of 1920.

Determining that there was an artificial effect suppressing the crew's memories, Dr. Crusher works to quickly restore them to the crew.

Determining the Hadwiger number of a given graph is NP-complete but fixed-parameter tractable: there is an algorithm for finding the largest clique minor in an amount of time that depends only polynomially on the size of the graph, but exponentially in h ( G ).

Determining the satisfiability of a formula in conjunctive normal form where each clause is limited to at most three literals is NP-complete ; this problem is called " 3SAT ", " 3CNFSAT ", or " 3-satisfiability ".

Determining the satisfiability of a formula in which each clause is limited to at most two literals is NL-complete ; this problem is called " 2SAT ".

Determining the satisfiability of a formula in which each clause is a Horn clause ( i. e. it contains at most one positive literal ) is P-complete ; this problem is called Horn-satisfiability.

Determining a " country of origin " is thus much more difficult than determining other aspects of a gem ( such as cut, clarity etc.

Determining the presence of both parts of this definition is not always straightforward, as hypoglycemic symptoms and effects are vague and can be produced by other conditions ; people with recurrently low glucose levels can lose their threshold symptoms so that severe neuroglycopenic impairment can occur without much warning, and many measurement methods ( especially glucose meters ) are imprecise at low levels.

Determining how many people died in these massacres overall is difficult.

Determining the distances to astronomical objects is crucial to understanding them, but the vast majority of objects are too far away for their distances to be directly determined.

Determining if the customer is likely to return to reclaim an item is a subjective decision, and wily customers may attempt to persuade the pawnshop owner that the item in question is important to them (" that necklace belonged to my grandmother, so I will certainly return for it "), and they will claim that they will return to recover it.

Determining the differences between the advantages of followers and first-movers may be a conceptual issue, but empirical issues revolve around explicit strategies that first-movers employ to improve upon their advantage of being the first to offer a product.

Determining the grazing angle with respect to a planar surface is trivial, but the computation for almost any other surface is significantly more difficult.

Determining the type of rock being drilled at any one time is a matter of knowing the ' lag time ' between a chip being cut by the bit and the time it reaches the surface where it is then examined by the wellsite geologist ( or mudlogger as they are sometimes called ).

* Determining flatness — When working with wood the first step is to designate a reference surface on a board which is known as the face side.

Determining the velocities for the case of one ball striking four " touching " balls is found by modeling the balls as weights with non-traditional springs on their colliding surface.

* Determining that the Seifert-Weber 3-manifold contains no incompressible surface has been algorithmically implemented by Rubinstein, Tillmann and Burton and based on normal surface theory.