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A principle is a fundamental truth or proposition that serves as the foundation for a system of beliefs or behavior or a chain of reasoning. [2] That is a guide for behavior or evaluation. In law, it is a rule that has to be or usually is to be followed. It can be desirably followed, or it can be an inevitable consequence of something, such as ...
Principal investigator. In many countries, the term principal investigator ( PI) refers to the holder of an independent grant and the lead researcher for the grant project, usually in the sciences, such as a laboratory study or a clinical trial. The phrase is also often used as a synonym for "head of the laboratory" or "research group leader".
Proof of concept testing of oil cleanup equipment. Proof of concept ( POC or PoC ), also known as proof of principle, is a realization of a certain idea, method or principle in order to demonstrate its feasibility, [1] or viability, [2] or a demonstration in principle with the aim of verifying that some concept or theory has practical potential.
Originally, Freud used the word ego to mean the sense of self, but later expanded it to include psychic functions such as judgment, tolerance, reality testing, control, planning, defense, synthesis of information, intellectual functioning, and memory. The ego is the organizing principle upon which thoughts and interpretations of the world are ...
Philosophiæ Naturalis Principia Mathematica at Wikisource. Philosophiæ Naturalis Principia Mathematica (English: The Mathematical Principles of Natural Philosophy) [1] often referred to as simply the Principia ( / prɪnˈsɪpiə, prɪnˈkɪpiə / ), is a book by Isaac Newton that expounds Newton's laws of motion and his law of universal ...
First principle. In philosophy and science, a first principle is a basic proposition or assumption that cannot be deduced from any other proposition or assumption. First principles in philosophy are from first cause [1] attitudes and taught by Aristotelians, and nuanced versions of first principles are referred to as postulates by Kantians. [2 ...
Thesaurus. A thesaurus ( pl.: thesauri or thesauruses ), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where you can find different words with same meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms ...
Epistemology ( / ɪˌpɪstəˈmɒlədʒi / ⓘ ih-PISS-tə-MOL-ə-jee; from Ancient Greek ἐπιστήμη (epistḗmē) 'knowledge', and -logy) is the branch of philosophy concerned with knowledge. Epistemologists study the nature, origin, and scope of knowledge, epistemic justification, the rationality of belief, and various related issues.