Certain high church services and other musical events in liturgical churches ( such as the Roman Catholic Mass and the Lutheran Divine Service ) may be a cappella, a practice remaining from apostolic times.

Certain scholarship holds that the practices, emblems and architecture now commonly associated with the Hindu pantheon and Jainism may go back as far as Late Harappan times to the period 2000 – 1500 BCE.

Certain times were set for the gathering of the people to celebrate the gifts of Yahweh and the deity ’ s acts of deliverance and redemption.

Certain books are popular at times but later forgotten ; he argued that it would be beneficial to a library if there were multiple copies of these books to accommodate the popular tastes of the times.

Certain precedents paved the way for this institution: representatives of principal towns had several times been convoked by the king, and under Philip III there had been assemblies of nobles and ecclesiastics in which the two orders deliberated separately.

It suggested that “ Certain individuals can at certain times and under certain circumstances be influenced to act abnormally without awareness of the influence ”.

Certain Semitic-speaking peoples, notably the Habesha, built the Kingdom of Aksum around two millennia ago, and this expanded to contain what is now Eritrea and northern Ethiopia, and at times, portions of Yemen and Sudan.

Certain rare styles can command several times their retail value in online marketplaces such as EBay and Craigslist.

Certain fishes and / or designated areas were forbidden ( or kapu ) at the times when overfishing could damage the environment.

Certain incidences hint towards the fact that Jochi was of a kinder disposition than Genghis Khan, though the adjective “ kind ” must be interpreted by the standards of his times and milieu because Jochi had had his share of indulgence in massacres of civilians.

Certain routes, such as routes that travel to Boeing's Everett facility, operate only in a peak direction and / or only at certain times ( to Boeing in the morning, away from Boeing in the afternoon ), while other routes can have variations depending on the time of day.

Certain simulators have added functionality of capturing this type of data directly from a functioning production environment, at various times of the day, week, or month, in order to reflect average, worst-case, and best-case conditions.

Certain types of non-conventional trademarks have become more widely accepted in recent times as a result of legislative changes expanding the definition of " trademark ".

Certain events only happen during certain times of day, such as a nighttime-only black market selling particularly rare items.

Certain curial departments have been organized by the Holy See at various times to assist it in the transaction of those affairs which canonical discipline and the individual interests of the faithful bring to Rome.

Certain schemes, such as Cocks Identity Based Encryption, or the Goldwasser-Micali cryptosystem result in ciphertexts hundreds or thousands of times longer than the plaintext.

Certain symptoms of her having OCD are that she locks the door up so many times, and cleans often.

Certain Eastercon host venues have fallen in and out of fashion at various times.

Harry Nyquist's 1924 paper, Certain Factors Affecting Telegraph Speed, contains a theoretical section quantifying " intelligence " and the " line speed " at which it can be transmitted by a communication system, giving the relation, where W is the speed of transmission of intelligence, m is the number of different voltage levels to choose from at each time step, and K is a constant.

Certain concepts recur throughout different fields of security:

Certain signs indicate different wordplay.

* Certain civil actions between citizens of different states ;

** Un Certain Regard – Twenty films selected from cultures near and far ; original and different works.

Certain types of very small artificial vesicle will automatically make themselves slightly asymmetric, although the mechanism by which this asymmetry is generated is very different from that in cells.

Certain phrases produce a different phrase when their phonemes are reversed — a process known as phonetic reversal.

Certain selected episodes are available on DVD in three different box sets.

Certain perceptions are often described ( or even " measured ") as if they are intensive or extensive physical properties, but in fact perceptions are fundamentally different from physical properties.

Certain countries, such as Israel, only allow couples to register on the condition that they have first been married in a religious ceremony recognised by the state, or were married in a different country.

Certain polyurethane products are " hybrids " and combine different aspects of their parent components.

Certain presentation programs also offer an interactive integrated hardware element designed to engage an audience ( e. g. audience response systems ) or facilitate presentations across different geographical locations ( e. g. web conferencing ).

Certain Dale Brown novels place cyberweapons in different roles.

Certain modern archaeologists now believe that the conquest of Canaan by the Israelites under Joshua simply didn't happen, and that the Israelites actually originated as a subculture in Canaanite society ; some biblical scholars believe that the accounts in the Book of Joshua are cobbled together from folk memory of disconnected battles, with numerous different aggressors, which occurred over a time period of over 200 years.

Certain receptors are sensitive to certain types of stimuli ( for example, different mechanoreceptors respond best to different kinds of touch stimuli, like sharp or blunt objects ).

Certain types of the AS / 400 object ( database file, storage areas and executable program objects ) can be compiled, copied, and stored into / from many different libraries concurrently, with the Library List hierarchy determining which instance of the object to use during execution of any application that utilizes that object name.

Certain steps of the algorithms are " choice points ", points at which a variable can be given either of two different truth values, and later steps in the algorithm may cause it to backtrack to one of these choice points.

Certain routes ( particularly Xpresso, see below ) use a different fare system.

Certain lines of dialogue are often repeated by different characters during the course of a single show ( e. g., " I was on the eighteenth hole!

Certain experts are still arguing whether or not the two types of memory are from distinct systems or whether the neural imaging makes it appear that way as a result of the activation of different mental processes during retrieval.

Certain heads are created for specific roles, others can be employed for several different performances by changing the clothing and the paint.

Certain variants may be due to ' authorial ' additions to different early copies, but most probably reflect early attempts to alter, add to or edit the text.

Certain planned cross-breeding between purebred dogs of different breeds can produce puppies worth more than their purebred parents, due to a high demand.