Modeling the History of Astronomy: Ptolemy, Copernicus, and Tycho

Tycho Brahe's Critique of Copernicus and the Copernican System

romantic education:reading william wordsworths the prelude in the light of the history of ideas

عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...

Copernicus and the Asr Challenge | W Aiting for Kepler | 1. Thoughts on Asr Research 1.1. Asr and the History O F Astronomy When Copernicus

When Copernicus1 introduced a heliocentric model of the solar system, assuming circular trajectories of planets around the sun, his model yielded larger errors than the well-known and rather successful Ptolemaic model (for which the sun and stars were modeled as moving around the earth in a complicated orbit). Fortunately for Humanity, these large errors did not discourage Copernicus from using...

Systems Modeling in Ptolemy

Synchronous Dataflow (SDF) is useful in modeling communications and signal processing systems. We describe a communication actor library based on the SDF semantics in Ptolemy II and show how to use these actors to simulate communication systems. However, many communication and signal processing systems nowadays use adaptive algorithms and control protocols. These sometimes violate SDF principle...

Dynamic Dataflow Modeling in Ptolemy

Dataflow process networks are a special case of Kahn process networks (PN). In dataflow process networks, each process consists of repeated firings of a dataflow actor, which defines a quantum of computation. Using this quantum avoids the complexities and context switching overhead of process suspension and resumption incurred in most implementations of Kahn process networks. Instead of context...