Grammar Reminders and a Little Technical Writing
"comprise": The whole comprises the parts.
"which": Introduces extra information that may be omitted（制限、非制限用法の区別は言及していない。制限用法のwhichは堅いのだろう）
"by means of": by, with, in
TOP TEN WAYS TO IMPROVE TECHNICAL WRITING, John C. Friedly, MIT
"For modern technical writing, it is probably best to avoid such use（＊制限用法の"which"）and to go which hunting as White advises"
code (v): write in code, program
encode (v): encrypt
Code, Wikipedia
"In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form or representation, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is the invention of language, which enabled a person, through speech, to communicate what he or she saw, heard, felt, or thought to others. But speech limits the range of communication to the distance a voice can carry, and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time.
The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands, such as English or Spanish.
One reason for coding is to enable communication in places where ordinary plain language, spoken or written, is difficult or impossible. For example, semaphore, where the configuration of flags held by a signaler or the arms of a semaphore tower encodes parts of the message, typically individual letters and numbers. Another person standing a great distance away can interpret the flags and reproduce the words sent."
"Codes that encode each source (clear text) character by a code word from some dictionary, and concatenation of such code words give us an encoded string. Variable-length codes are especially useful when clear text characters have different probabilities; see also entropy encoding.
A prefix code is a code with the "prefix property": there is no valid code word in the system that is a prefix (start) of any other valid code word in the set. Huffman coding is the most known algorithm for deriving prefix codes. Prefix codes are widely referred to as "Huffman codes" even when the code was not produced by a Huffman algorithm. Other examples of prefix codes are country calling codes, the country and publisher parts of ISBNs, and the Secondary Synchronization Codes used in the UMTS WCDMA 3G Wireless Standard.
Kraft's inequality characterizes the sets of codeword lengths that are possible in a prefix code. Virtually any uniquely decodable one-to-many code, not necessary a prefix one, must satisfy Kraft's inequality."
Differences between Dyes and Pigments in Flooring
Dyes: finer, absorbed into material
Pigments: forms a paint film
THE DIFFERENCES BETWEEN PIGMENTS AND DYES
(textile)
Dyes: dissolved, chemically bind, become part of material
Pigments: suspended, physically bind, forms a coating
Surround or Enclose, WordReference.com
Surround: extend around (Merriam Webster), easily breakable, get out/in
Enclose: fence off (Merriam Webster), barrier, in/out clearly defined, tough to break, get in/out, top/bottom/right/left
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