The tan delta test checks insulation quality in medium and high voltage cables. It measures the resistance in the cable as current flows through it to determine the level of phase shift and insulation condition. It can uncover water tree problems, but does not provide information about the location of a problem. Technicians must take […]
Delta Modulation is a method of converting analog signals to digital for data processing, primarily used for voice communications. It is error-prone and degrades with distance. Pulse code modulation is the original process, while adaptive delta modulation produces better signal-to-noise ratio output rates. Alec Reeves invented PCM in 1937, making the digital age possible. Delta […]
Delta Modulation (DM) is a fast but error-prone method of converting analog signals to digital signals for short-range transmission. Pulse code modulation (PCM) and adaptive delta modulation (ADM) are variations of DM that produce better signal-to-noise ratio output rates. PCM is still used to encode audio signals on various forms of electronic media. Alec Reeves […]
Delta waves are high amplitude, low frequency brain waves that occur during stage three sleep. They are important for physiological function and can be identified on an EEG. Delta waves are not seen in an awake brain, but can occur in intoxicated or delirious individuals and those with certain mental illnesses or dementia. A sleep […]
The Kronecker delta function is a binary function that equals 1 if i and j are equal, otherwise 0. It simplifies writing equations involving sigma notation and is used in linear algebra, tensor analysis, and digital signal processing. It can also be used to simplify complex mathematical statements about the real numbers. The Kronecker delta […]
The delta model is a strategic management method focused on customer needs. It emphasizes customer focus over competitor focus and encourages using existing resources to accommodate customer needs. The model involves five main principles and four basic elements for execution. A delta model is a method by which an organization engages in strategic management focused […]
