Over a relatively short period of time, usually about four to twelve weeks, the worker must be able to shift the focus, back and forth, between immediate external stressful exigencies ( `` precipitating stress '' ) and the key, emotionally relevant issues ( `` underlying problem '' ) which are, often in a dramatic preconscious breakthrough, reactivated by the crisis situation, and hence once again amenable to resolution.

I submit that this is the key problem of international relations, that it always has been, that it always will be.

A key problem in the design of good algorithms for this problem is that formulas for the variance may involve sums of squares, which can lead to numerical instability as well as to arithmetic overflow when dealing with large values.

Symmetric-key ciphers are suitable for bulk encryption using shared keys, and public-key encryption using digital certificates can provide a practical solution for the problem of securely communicating when no key is shared in advance.

A key distinction between analysis of algorithms and computational complexity theory is that the former is devoted to analyzing the amount of resources needed by a particular algorithm to solve a problem, whereas the latter asks a more general question about all possible algorithms that could be used to solve the same problem.

" Here again, the problem of induction plays a key role in arguments.

This effort is supported by the Top Gun Program enabling HP Enterprise Services technical personnel to dedicate 3 months of their time on joint projects with the Agility Alliance partner on a key technology problem, to create an innovative customer solution.

The key problem for Watson and Crick, which could not be resolved by the data from King's College, was to guess how the nucleotide bases pack into the core of the DNA double helix.

If the open string is in tune, but sharp or flat when frets are pressed, the bridge saddle position can be adjusted with a screwdriver or hex key to remedy the problem.

He was co-editor ( with Marshall Swain ) of Essays on Knowledge and Justification ( 1978 ), regarded as a key anthology of essays relating to the Gettier problem and used as a core text in undergraduate epistemology courses.

The government faced the problem that a key piece of evidence – Lindh's confession – might be excluded from evidence as having been forced under duress ( i. e. torture ).

This inability to distinguish distributions with a comb-like shape from continuous distributions is a key problem with all statistics based on a variant of the K-S test.

John Harrison, a self-educated English clockmaker then invented the marine chronometer, a key piece in solving the problem of accurately establishing longitude at sea, thus revolutionising and extending the possibility of safe long distance sea travel.

The inability to pin an idea or cultural feature to quantifiable key units is widely acknowledged as a problem for memetics.

The problem with this system, is that it provides only a crude binary on / off signal for each key.

The problem of correctly identifying a public key as belonging to a particular user is not unique to PGP.

All public key / private key cryptosystems have the same problem, if in slightly different guise, and no fully satisfactory solution is known.

The Diffie – Hellman key exchange relies on the fact that there are efficient algorithms for modular exponentiation, while the reverse operation the discrete logarithm is thought to be a hard problem.

A central problem with the use of public-key cryptography is confidence ( ideally, proof ) that a particular public key is correct, and belongs to the person or entity claimed ( i. e. is " authentic "), and has not been tampered with, or replaced by, a malicious third party ( a " man-in-the-middle ").

The usual approach to this problem is to use a public-key infrastructure ( PKI ), in which one or more third parties-known as certificate authorities-certify ownership of key pairs.

To date, no fully satisfactory solution to this " public key authentication problem " has been found.

However, revoking a key now requires both Alice and Bob to be available, and this creates a problem of reliability.

Inheritance and a sense of social value fixed for life, two key requirements of any caste system according to Haviland, was a pervasive principle of almost everyone's life.

Distributism therefore advocates a society marked by widespread property ownership and, according to co-operative economist Race Mathews, maintains that such a system is key to bringing about a just social order.

A fugue begins with the exposition and is written according to certain predefined rules ; in later portions the composer has more freedom, though a logical key structure is usually followed.

Essentially the same process is used to insert a document into the network: the data is routed according to the key until it runs out of hops, and if no existing document is found with the same key, it is stored on each node.

It carries all the routing information needed to get a payment from one bank to another wherever it may be ; it contains all the key bank account details such as Bank Identifier Codes, branch codes ( known as sort codes in the UK and Ireland ) and account numbers and it contains check digits which can be validated at source according to a single standard procedure.

The key date, according to Andrew Crisell, is 1959:

However, according to Louis Marie DeCormenin, Stephen was the key person responsible for issuing the orders, and took great delight in destroying his rival and his supporters.

Characteristics of self-actualizers according to Maslow include the four key dimensions:

Looking to another key rhetorical theorist, Plato defined the scope of rhetoric according to his negative opinions of the art.

Such key schemes do not affect the distribution of messages through the container and do not use a message preprocessing according to the defined key ( see figure The Second Protection Level Scheme ).

Transformers can be further classified according to such key parameters as follow:

The UCSF School of Pharmacy was also ranked as the top program in the US, according to a 2002 survey published in The Annals of Pharmacotherapy, which weighed key criteria, including funding for research and the frequency of scientific publications by faculty, that are not considered in other rankings.

; Scales: While, as mentioned under Fingering, a player will usually play a given instrument only in its tonic key and possibly in the key beginning on the fourth ( e. g. G on a D whistle ), nearly any key is possible, becoming progressively more difficult to keep in tune as the player moves away from the whistle's tonic, according to the circle of fifths.

* Cryptographic key types classification according to their usage

The keys mechanically activate levers and wires that connect to metal clappers that strike the inside of the bells, allowing the performer on the bells, or carillonneur, to vary the intensity of the note according to the force applied to the key.

The keys activate levers and wires that connect directly to the bells ' clappers ; thus, as with a piano, the carillonneur can vary the intensity of the note according to the force applied to the key.

The closure of these valves was a violation of a key NRC rule, according to which the reactor must be shut down if all auxiliary feed pumps are closed for maintenance.

Prime minister Benazir Bhutto of Pakistan, allegedly, through Pakistan's former top scientist, Dr. Abdul Qadeer Khan, supplied key data, stored in CDs, on uranium enrichment and information to North Korea in exchange for missile technology around 1990 – 1996, according to U. S. intelligence officials.

The five key principles of food hygiene, according to WHO, are:

The Sea of Light album ( 1995 ) produced by the band along with Kalle Trapp was well received and in retrospect is seen as the band's return to form, the key to success being ( according to critic Donald A. Guarisco ) the way it " forsook the ill-judged pop metal stylings of albums like Equator for a return to the gothic-tinged old-school metal style that highlighted classic Uriah Heep albums like Look at Yourself ".

One of the key differences between the two documents is that some rights in the Canadian Charter can be overridden by governments if they explicitly do so according to Section 33 of the Charter.