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Topics related to "random digit dialling"

noise
noise any signal that does not convey useful information. Electrical noise consists of electrical currents or voltages that interfere with the operation of electronic systems. Electrical noise limits the sensitivity of radio receiving systems and, when present at high enough levels, may cause false... Read more
analog-to-digital conversion
analog-to-digital conversion the process of changing continuously varying data, such as voltage, current, or shaft rotation, into discrete digital quantities that represent the magnitude of the data compared to a standard or reference at the moment the conversion is made. There are two types of con... Read more
computer
computer device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator , by being able to store a computer program (so that it can repeat its operations and make logical decisions), by the numbe... Read more
digital circuit
digital circuit electronic circuit that can take on only a finite number of states. That is contrasted with analog circuits , whose voltages or other quantities vary in a continuous manner. Binary (two-state) digital circuits are the most common. The two possible states of a binary circuit are rep... Read more
analog circuit
analog circuit electronic circuit that operates with currents and voltages that vary continuously with time and have no abrupt transitions between levels. Generally speaking, analog circuits are contrasted with digital circuits , which function as though currents or voltages exist only at one of a... Read more
information theory
information theory or communication theory, mathematical theory formulated principally by the American scientist Claude E. Shannon to explain aspects and problems of information and communication. While the theory is not specific in all respects, it proves the existence of optimum coding sche... Read more
hoof
hoof horny epidermal casing at the end of the digits of an ungulate (hoofed) mammal . In the even-toed ungulates, such as swine, deer, and cattle, the hoof is cloven; in the odd-toed ungulates, such as the horse and the rhinoceros, it is solid. ... Read more
binary system
binary system numeration system based on powers of 2, in contrast to the familiar decimal system , which is based on powers of 10. In the binary system, only the digits 0 and 1 are used. Thus, the first ten numbers in binary notation, corresponding to the numbers 0, 1, 2, 3,... Read more
modem
modem [ mo dulator/ dem odulator], an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analog signals. A modem attached to a computer converts digital data to an analog signal that it uses to modulate a carrier... Read more
algorithm
algorithm or algorism [for Al-Khowarizmi ], a clearly defined procedure for obtaining the solution to a general type of problem, often numerical. Much of ordinary arithmetic as traditionally taught consists of algorithms involving the fundamental operations of addition, subtraction, multiplica... Read more

Dictionary entries related to "random digit dialling"

random-digit dialling
Book article from: A Dictionary of Business and Management random-digit dialling A method of identifying the households...telephone interview. Either all the digits of the telephone number are randomly...a directory and the last one or two digits are replaced by random numbers.

Related newspaper, magazine, and trade journal articles from HighBeam Research

Polls: press one for IVR, two for RDD ...(campaignland)(interactive voice response, random digit dialling)
Magazine article from: Campaigns & Elections; 2/1/2007; ; 700+ words ; ...So for in-depth survey data to inform campaign strategy, the old way remains the champion: hired personnel using Random Digit Dialing of a carefully drawn sample. RDD has its own flaws, including the dwindling number of people willing to stay...
Patel, D., Gillespie, B. & Foxman, B. (2003). Sexual behavior of older women: Results of a random-digit-dialing survey of 2000 women in the United States. Sexually Transmitted Diseases, 30, 216-220.(Sex Research Update)
Magazine article from: The Canadian Journal of Human Sexuality; 9/22/2002; ; 700+ words ; ...studies of erectile dysfunction have yielded some data on the sexual behaviour of older men.) As part of a random-digit-dialling telephone survey of female sexual behaviour in the United States, conducted in 1996, Patel, Gillespie, and...
Needle and syringe use & sharps disposal by a rural population.
Magazine article from: Journal of Environmental Health; 7/1/1995; ; 700+ words ; ...efficiency of random digit dialling, was also chosen because...frame for studies using random digit dialling, are not available for...prefix using a table of random numbers. The prefix and the first three digits of the suffix of the...
Early Sex and Its Behavioral Consequences in New Zealand.
Magazine article from: The Journal of Sex Research; 5/1/1999; ; 700+ words ; ...identification of household by random-digit dialling (RDD) of all available telephone...numbers in the country stratified by dialling zones, followed by selection...number as the start point for the random generation of two further numbers...
Descriptive epidemiology of a depressive syndrome in a western Canadian community population
Magazine article from: Canadian Journal of Public Health; 9/1/2001; ; 700+ words ; ...biopsychosocial determinants in Calgary, Canada. Methods: Random digit dialling (RDD) was used to select a sample consisting...and July 1, 1999. The sample was selected by random digit dialling (RDD), using the MitofskyWaksberg method 7 with...
Alcohol consumption and the use of antidepressants
Magazine article from: Canadian Medical Association. Journal; 2/27/2007; ; 700+ words ; ...depressed and nondepressed men and women. Methods: Random-digit dialling and computer-assisted telephone interviewing...differences in alcohol use and related problems. Random-digit dialling was used with computer-assisted telephone interviewing...
Knowledge about tobacco and attitudes toward tobacco control: How different are smokers and nonsmokers?
Magazine article from: Canadian Journal of Public Health; 9/1/2000; ; 700+ words ; ABSTRACT Using data from a 1996 random-digit-- dialling computer-assisted telephone survey of Ontario...older. First, households were selected using random digit dialling. A respondent within each household was then...
A case-control study of the association between socio-demographic, lifestyle and medical history factors and multiple sclerosis
Magazine article from: Canadian Journal of Public Health; 7/1/2001; ; 700+ words ; ...Control ascertainment Controls were drawn at random from the general population, and frequency...residential phone number. They were identified by random digit dialling method, using the first 3 digits of the phone number of the cases. They were...
Concurrent consultations with physicians and providers of alternative care: Results from a population-based study
Magazine article from: Canadian Journal of Public Health; 11/1/2000; ; 700+ words ; ...physicians only. Methods: A telephone survey (random-digit dialling) collected information from 818 adults living in...May 30, 1998. The sample was selected through random-digit dialling12 and was stratified by age and rural...
Comparing the health of low income and less well educated groups in the United States and Canada.(Research)(Report)
Magazine article from: Population Health Metrics; 10/16/2007; ; 700+ words ; ...population sizes where households were selected based on a Random Digit Dialling (RDD) process. Measures The HUI3 is a preference...estimates [18]. Bootstraps involve the selection of random samples or replicates and calculate the variation from...