Industry Speaker Series June 4, 2003 Texas Instruments: E&PS Supply Chain Apr. 10, 2003 Retail Demand and Supply Chain Management – continued Apr. 17, 2003 Softgoods Demand and Supply Chain Management Apr. 7, 2003 Consumer Electronics Supply Chain Management and Case Study – continued Mar. 24, 2003 Consumer Electronics Supply Chain Management and Case Study – continued Feb. 28, 2003 Wireless Data Management and the Supply Chai n Feb. 20, 2003 Retail Demand and Supply Chain Management Feb. 17, 2003 Consumer Electronics Supply Chain Management and Case Study – continued Jan. 31, 2003 Air Cargo Supply Chain Management and Challe nges Unlock the Value in Your Supply Chain Jan. 28, 2003 Lean Design: Using Blitz QFD to Deliver Maximu m for Minimum Contract Manufacturing in China Jan. 27, 2003 Consumer Electronics Supply Chain Management and Case Study June 23, 2004 Supply Chain Management at BlockBuster June 17, 2004 CEO Forum & Agile Seminar Feb. 16, 2004 Inventory Management Nov. 3, 2003 Logistics Planning with i2 Oct. 3, 2003 Trends in Wholesale Inventory Management Sept. 26, 2003 The Art and Science of Consulting Sept. 12, 2003 The Outsourced Supply Chain July 28, 2003 Supply Chain Management with Oracle July 21, 2003 Supply Chain Management with SAP APO July 21, 2003 Filling a Niche in the Consumer Goods Demand Chain July 18, 2003 Dell Site Visit, Austin Texas July 14, 2003 June 23, 2003 Slide 14
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Hayashi et al. (2003) 飯飯飯 Hongjie Dai
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• Path of protostars from the Hayashi Track to Main Sequence (MS): Figure II-56 Hayashi Track To understand how a protostar moves from the Hayashi Track to the main sequence, it is convenient to use the Stefan-Boltzman Law: L = 4  R2  T4. Eqn(16) High mass star (e.g., 9M☉ star) ~ horizontal toward left – R decreases while Ts (surface temperature) increases in such a way as to keep L ~ constant (see Eqn(16)). Fig. II 56: Evolution of Protostars 20
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• Since all protostars of all mass range are born at roughly ~ 3000 K, with different luminosities, they all lie along the Hayashi Track on the HR Diagram. See Fig. II-56. (See class notes for the details.) • As the protostar keeps contracting and heats up, it moves on the H-R Diagram from the Hayashi Track to the main sequence. By the time it reaches the main sequence the central temperature gets to > ~ 107 K, high enough for the H burning to start. Then, the nuclear energy can supply the source of energy lost by photons from the stellar surface, and hence, the contraction stops  Birth of a Star! 13
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Plan Development History • Baseline – Project Plan, Feb 2003 • JAO appointed leaders – May 2003: Guilloteau, Sramek – August 2003: Emerson • Development cycle – – – – Release draft to OG Discuss via telecon Repeat Special: C’ville, Jan 2004 • Computing & Ops Date Draft 2003-10-15 Draft A First draft 2003-11-10 Draft B Minor changes throughout; major changes in Sec 4, 5, 7, 10, 11.4, and 13 2003-11-25 Draft C Re-organized, many changes everywhere: internal release to Emerson 2003-12-01 Draft D Semi-Stable: 2, 4, 5, 6, 7, 9, 10, 11, 12 Unstable: 1, 3, 5.5, 7.2, 7.3, 7.4, 8, 9.5, 10.1, 10.2, 11.1, 11.2, 11.5, 13, 14 2003-12-15 Draft E Revised & re-structured per feedback to Draft D. Significant new material: 8, 11, 13 Draft F Revised per feedback to Draft E: all Significant new material: 6, 10, 12 First official release to JAO 2003-12-31 2004-02-21 Draft G3 Reason/Initiation/Remarks Revised based on OG telecon + written comments. Relative to Draft F, major changes in Sections 5, 7, 8, 9, 10.4, 10.5, 13 (new), 14.3, 14.5 (new), 14.6 (new). ALMA Week, 2004 March 3-5, in Garmisch, Germany 4
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