Grounded theory is a systematic methodology in the social sciences involving the construction of theory through methodic gathering and analysis of data. Grounded theory is a research methodology which operates inductively, in contrast to the hypothetico-deductive approach. A study using grounded theory is likely to begin with a question, or even just with the collection of qualitative data. As researchers review the data collected, repeated ideas, concepts or elements become apparent, and are ta
Definition - What does Pulse Code Modulation (PCM) mean? Pulse code modulation (PCM) is a digital representation of an analog signal that takes samples of the amplitude of the analog signal at regular intervals. The sampled analog data is changed to, and then represented by, binary data. PCM requires a very accurate clock.
1.1 DES in CBC Mode (DES-CBC). Message text and, if required, message signatures are encrypted using the Data Encryption Standard (DES) algorithm in the Cipher Block Chaining (CBC) mode of operation.The DES algorithm is defined in FIPS PUB 46-1 [1], and is equivalent to the Data Encryption Algorithm (DEA) provided in ANSI X3.92-1981 [2]..1 DES in CBC Mode (DES-CBC). Message text and, if required, message signatures are encrypted using the Data Encryption Standard (DES) algorithm in the Cipher Block Chaining (CBC) mode of operation.