Such schemes have also been standardized for older designs as well, such as JPEG images with progressive encoding, and MPEG-2 and MPEG-4 Part 2 video, although those prior schemes had limited success in terms of adoption into real-world common usage.

Such schemes do not relieve user and administrators from choosing reasonable single passwords, nor system designers or administrators from ensuring that private access control information passed among systems enabling single sign-on is secure against attack.

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 ).

Such schemes may try to downplay their pyramid nature by referring to themselves as " gifting circles " with money being " gifted.

Such schemes are known as self-synchronizing stream ciphers, asynchronous stream ciphers or ciphertext autokey ( CTAK ).

Such an assessment is known as a cost-benefit analysis, and is usually a fundamental piece of information for decision-makers, as it places a value on the net benefits ( or disbenefits ) of schemes and generates a ratio of benefits to costs which may be used to prioritise projects when funding is constrained.

Such financial regulation is often enacted in response to a crisis as was the case with the Bubble Act 1720 which was passed by the British government at the height of the South Sea Bubble to try stop speculation in such schemes.

Such schemes are known as homomorphic encryption schemes.

Such schemes do not necessarily constitute rights of return, however, particularly where they target former citizenship-holders rather than members of an ethnic group who may never have held citizenship, or whose diaspora location even predates state formation.

Such schemes were being widely broken by the 16th century.

Such incentive schemes, however, are reactive in the sense that they provide no mechanism for preventing mistakes or opportunistic behavior, and can elicit myopic behavior.

Such objects are usually not considered varieties, and are eliminated by requiring the schemes underlying a variety to be separated.

Such schemes were originally known as " workman's compensation ," but today, most jurisdictions have adopted the term " workers ' compensation " as a gender-neutral alternative.

Such failed schemes may include Penelope's attempts at outsmarting the fictional security guard of the studio in which episodes of the Amanda Show are filmed and at manipulating Amanda's cast-mates into helping her carry out her plans.

Such reactions usually involve an aqueous acidic workup, though this is rarely shown in reaction schemes.

Such non-sequential interleaving can have benefits in some error correction schemes.

Such a key exchange was impossible with any previously known cryptographic schemes based on symmetric ciphers, because with these schemes it is necessary that the two parties exchange a secret key at some prior time, hence they require a confidential channel at that time which is just what we are attempting to build.

Such schemes were used, and indeed still are used on some branches of rail networks, and on heritage railways.

Such development partners typically excel in the set-up of comprehensive investigation and supply schemes, to model a desired contacting pattern or spatial arrangement of matter.

Such stocks can be highly volatile and subject to manipulation by stock promoters and pump and dump schemes.

Such advanced schemes would also include train describer and train tracking technologies.

Such documents are mere evidence that a change of name has occurred, however, and they do not themselves operate to change a person's name.

Such groups often operate supportive organizations or institutions to help victims of shunning to recover from damaging effects, and sometimes to attack the organizations practicing shunning, as a part of their advocacy.

Such brothels often operate disguised as legitimate business, such as massage parlors, saunas or spas.

Such packet filters operate at the Network Layer ( layer 3 ) and function more efficiently because they only look at the header part of a packet.

Such systems usually required the user to listen to the signal though headphones, sometimes at very low volume, as the only energy available to operate the headphones was that picked up by the antenna.

Such organisms ( for example frogs ) rely on environmental heat sources, which permits them to operate at very economical metabolic rates.

Such stores have a much smaller size than Virgin Megastores and currently operate in 10 countries: Canada, China, Germany, Kuwait, Lebanon, Morocco, Poland, Spain, the United Kingdom and the United States.

Such cameras are designed to be small, easily hidden, and able to operate unattended ; those used in industrial or scientific settings are often meant for use in environments that are normally inaccessible or uncomfortable for humans, and are therefore hardened for such hostile environments ( e. g. radiation, high heat, or toxic chemical exposure ).

Such large radiotelephony stations employed large numbers of people and were expensive to operate.

Such consultants are often called contractors since they are usually providing technical services ( such as programming or systems analysis ) that could be performed in-house were it not easier for the employer to operate a flexible system of only hiring such technologists at times of peak workload rather than permanently.

Such engines need to operate at a relatively high rotational speed, which is inappropriate for starting, stopping, and slower travel.

Such neural ensembles are said to reduce the variability in output produced by single electrodes, which could make it difficult to operate a BCI.

Such stores, not directly owned by the BHS company itself, now operate over Europe and the Middle East.

Such temperatures are impractical ; proposed HTE systems operate between 100 ° C and 850 ° C.

Such lodges operate within a geographical area and provide training in the performance of the order's ritual for members of the order.

Such an interlocking may also be designed to operate without a human operator.

Such ferries operate faster and more effectively in rivers with strong currents.

Such devices are not necessary in an externally powered cannon, such as the electrically driven M61 Vulcan, where the external power source is used to operate the mechanism of the weapon.

Such devices had to combine engineering simplicity with a high degree of accuracy, and the ability to operate at speed of lengthy periods.

Such radars typically operate by bouncing their signal off layers in the atmosphere.

Such platforms are fitted with appropriate headlights, horns, and air brake appliances to operate in the leading position on a cut of cars ( i. e. coupled ahead of the locomotive ).

Such units are smaller in size, and trained by the main group, and all operate under the AFEUR name.

Such systems usually operate continuously.

CIPA requires K-12 schools and libraries using E-Rate discounts to operate " a technology protection measure with respect to any of its computers with Internet access that protects against access through such computers to visual depictions that are obscene, child pornography, or harmful to minors ..." Such a technology protection measure must be employed " during any use of such computers by minors.