翻訳と辞書 Words near each other ・ Secular Order of Discalced Carmelites ・ Secular Organizations for Sobriety ・ Secular paganism ・ Secular Party of Australia ・ Secular Pro-Life ・ Secular religion ・ Secular resonance ・ Secular Review ・ Secular saint ・ Secular Solstice ・ Secular spirituality ・ Secular state ・ Secular Student Alliance ・ Secular theology ・ Secular Thought ・ Secular variation ・ Secular Works ・ Secularism ・ Secularism in Bangladesh ・ Secularism in Egypt ・ Secularism in India ・ Secularism in Iran ・ Secularism in Israel ・ Secularism in Lebanon ・ Secularism in Pakistan ・ Secularism in Syria ・ Secularism in Tunisia ・ Secularism in Turkey ・ Secularist of the Year ・ Secularity Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Secular variation ： ウィキペディア英語版 Secular variation The secular variation of a time series is its long-term non-periodic variation (see Decomposition of time series). Whether something is perceived as a secular variation or not depends on the available timescale: a secular variation over a time scale of centuries may be part of a periodic variation over a time scale of millions of years. Natural quantities often have both periodic and secular variations. Secular variation is sometimes called secular trend or secular drift when the emphasis is on a linear long-term trend. The term secular variation is used wherever time series are applicable in economics, operations research, biological anthropology, astronomy (particularly celestial mechanics) such as VSOP (planets) etc. ==Astronomy== In astronomy, secular variations are contrasted with periodic phenomena. In particular, astronomical ephemerides use ''secular'' to label the longest-lasting or non-oscillatory perturbations in the motion of planets, as opposed to ''periodic'' perturbations which exhibit repetition over the course of a time frame of interest. Solar System ephemerides are essential for the navigation of spacecraft and for all kinds of space observations of the planets, their natural satellites, stars and galaxies. Most of the known perturbations to motion in stable, regular, and well-determined dynamical systems tend to be periodic at some level, but in many-body systems, chaotic dynamics result in some effects which are one-way (for example, planetary migration). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Secular variation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.