Determining the number of films he made during the early part of his career is difficult because the ad copy rarely named him.

Determining exactly the various influences is, after more than two thousand years of internal and external influences and developments, impossible but the result has been a large number of unique musical traditions.

Determining the number of categories of initials and finals actually represented thus took a good deal of careful work on the part of Chinese linguists.

Determining the prime factors of a number is an example of a problem frequently used to ensure cryptographic security in encryption systems ; this problem is believed to require super-polynomial time in the number of digits-it is relatively easy to construct a problem that would take longer than the known age of the Universe to solve on current computers using current algorithms.

Determining the achromatic number is NP-hard ; determining if it is greater than a given number is NP-complete, as shown by Yannakakis and Gavril in 1978 by transformation from the minimum maximal matching problem.

Determining a clear winner ( and, incidentally, a clear loser ) usually requires the same number of rounds as a knockout tournament, that is the binary logarithm of the number of players rounded up.

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 epoch of a Fifth Age is important for those who apply the Tolkien calendar to present dates.

Determining who coined the term magical realism ( as opposed to magic realism ) is controversial among literary critics.

Determining ownership in law involves determining who has certain rights and duties over the property.

( Determining who the stakeholders are and how to incorporate them are other questions entirely.

Determining who owed what feudal incidences filled the court dockets for generations.

Determining a site to be NSFW is invariably subjective, and poses challenges for academics who study sexuality.

Determining the extent to which the changes that have occurred would have happened in the absence of the Mackinac Center is not possible.

Determining which goods have been sold, and the cost of those goods, requires either identifying the goods or using a convention to assume which goods were sold.

The color, consistency, acidity, and other characteristics of the discharge may be predictive of the causative agent. Determining the agent is especially important because women may have more than one infection, or have symptoms that overlap those of another infection, which dictates different treatment processes to cure the infection.

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 what records have enduring value can be challenging.

Determining the appropriate treatment for noncyclical breast pain is more difficult, not only because it is hard to pinpoint where the pain is coming from, but also because the pain may not have hormonal causes and very often does not respond to hormonal treatment.

Determining the exact cause of CNH has proven to be difficult, specifically because only 21 additional cases have been reported since Plum and Swanson ’ s initial report of the condition in 1959.

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

Determining the precise end of the Republic is a task of dispute by modern historians ; Roman citizens of the time did not recognize that the Republic had ceased to exist.

Determining what rank each pilot would assume in the USAAF had to be negotiated, with most being given a rank equivalent to their RAF rank.

* Determining sex ;

Determining the age and sex of birds in brown plumage can be very difficult.

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 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.

* Determining and prioritizing security needs and aligning them with the perceived threats and the available budget.

Determining a precise distance to the LMC, as with any other galaxy, was challenging due to the use of standard candles for calculating distances, with the primary problem being that many of the standard candles are not as ' standard ' as one would like ; in many cases, the age and / or metallicity of the standard candle plays a role in determining the intrinsic luminosity of the object.

In 1811, he published an article with the title Essai d ' une manière de déterminer les masses relatives des molécules élémentaires des corps, et les proportions selon lesquelles elles entrent dans ces combinaisons (" Essay on Determining the Relative Masses of the Elementary Molecules of Bodies and the Proportions by Which They Enter These Combinations "), which contains Avogadro's hypothesis.

Determining latitude was relatively easy in that it could be found from the altitude of the sun at noon with the aid of a table giving the sun's declination for the day.

* Task Allocation and Scheduling: Determining the optimal distribution of tasks amongst a group of agents, with time and equipment constraints

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 Y-chromosomal Adam's DNA sequence, and the time when he lived, involves identifying the human Y-chromosome lineages that are most divergent from each other — the lineages that share the least unique mutations with each other when compared to a non-human primate sequence in a phylogenetic tree.

Determining the new territory too large to administer as one unit, Britain divided its new southeastern acquisitions into two new colonies separated by the Apalachicola River: East Florida, with its capital in the old Spanish city of St. Augustine, and West Florida, with its capital at Pensacola.

Determining overhead costs often involves making assumptions about what costs should be associated with production activities and what costs should be associated with other activities.

This new system integrates with the various LTA's traffic management existing systems, such as the Green Link Determining System ( GLIDE ), TrafficScan, Expressway Monitoring Advisory System ( EMAS ), Junction Electronic Eyes ( J-Eyes ), and the Electronic Road Pricing system.

Determining an orthogonal transformation to tridiagonal form can be done with the Lanczos algorithm.

* 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 which contact to communicate with through direct marketing may be difficult.

Determining the head of navigation can be subjective on many streams, as this point may vary greatly with the size of the ship being contemplated for navigation.

He, along with J. Richard Fisher, proposed the now-famous Tully-Fisher relation in a paper, A New Method of Determining Distances to Galaxies, published in Astronomy and Astrophysics, Vol.

Fisher, along with R. Brent Tully, proposed the now-famous Tully-Fisher relation in the paper, A New Method of Determining Distances to Galaxies ( published in Astronomy and Astrophysics, Vol.

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 the point at which a compound is capable of detonating under confinement with thermal stress is useful.