Simulation and Optimization of the Flow in ERP System for MMI

Abstract

Enterprise Resource Planning system(ERP) provide a comprehensive integrated solution for enterpriseinformative construction , the practical worker used to think that kind of comprehensive integrated solution already was the optimizes method of the enterprise flow. Therefore, until so far there is no one studying that issue from the perspective of optimized model. For mechanical manufacturing industry ( MMI ) characteristics and being combined with practical issues of an enterprise, the paper has proposed the optimized process flow model based on fuzzy nearness from the perspective of optimization for the first time. Performing simulation and optimization to the flow of enterprise's ERP system which uses that model can significantly optimize the logistics relations between different departments of enterprise, increase profitability and also provides methods to decisionmaking and optimization for flow of logistics, meanwhile, it lay the foundation for deep research and design of ERP system.

A hybrid origin of the Martian crustal dichotomy: Degree-1 convection antipodal to a giant impact

“…The short timescale in which additional crust is produced (within 100s of Myr of Mars' formation) can explain the formation of strong remanent crustal magnetic signatures in the southern hemisphere before the end of the Martian dynamo. Depending on the extent of crust production, extraction of melt to the surface could leave sufficient highly viscous melt residue under the southern crust to induce plume migration (Zhong, 2009;Šrámek and Zhong, 2010), resulting in the formation of Tharsis on the dichotomy boundary. The hybrid model for dichotomy formation can therefore bridge the gap between an early Borealis impact 4.5 Ga (Bottke and Andrews-Hanna, 2017) and a late Noachian formation of Tharsis >3.7 Ga (e.g., Bouley et al, 2016), with broad implications for the geophysical evolution of Mars.…”

“…While we do not include the production or effects of melt-residue in our model, lateral variations in lithosphere thickness and highly viscous melt residue have been shown to drive differential rotation of the Martian lithosphere, resulting in the migration of the Tharsis plume to the dichotomy boundary (Zhong, 2009;Šrámek and Zhong, 2010). Differential rotation of the lithosphere with respect to the plume occurs even if the lithosphere remains stationary (Zhong, 2009;Šrámek and Zhong, 2010). We expect the plume to migrate and the lithosphere to remain stationary, because the equatorial bulge should stabilize the planet against large scale true polar wander (Daradich et al, 2008).…”

“…If degree-1 convection sufficiently thickens the southern crust, it would create a layer of highly viscous melt residue under the thickened crust. This lateral variation in viscosity could cause differential rotation of the lithosphere or migration of the degree-1 upwelling, until the plume reaches the dichotomy boundary and creates Tharsis (Zhong, 2009;Zhong, 2010, Šrámek and. Plume migration from the south pole to Tharsis' location is supported by observations of volcanic resurfacing, demagnetization, and increased crustal thickness along that path (Hynek et al, 2011;Cheung and King, 2014), and is consistent with the creation of Tharsis within a few hundred Myrs of dichotomy formation (e.g., Nimmo and Tanaka, 2005, and references therein).…”

“…New crust production in the southern hemisphere could explain the formation of the remanent crustal magnetic signatures (provided that the crust is produced before the end of the dynamo), and could also result in a layer of highly viscous melt residue. The melt residue under the southern crust could induce plume migration and/or differential lithosphere rotation resulting in the formation of Tharsis on the dichotomy boundary (Zhong, 2009;Šrámek and Zhong, 2010). While a new northern crust would form relatively rapidly, it would form from an already depleted mantle(depleted from forming the original crust) and thus be depleted in radiogenic-heat producing elements relative to the older, more enriched southern crust (Ruedas and Breuer, 2017).…”

“…bThe insulating effect of the thicker, enriched southern crust results in degree-1 convection with a large upwelling in the southern hemisphere. (c) Melt generation from the upwelling(s) further thickens the crust in the hemisphere opposite the impact, and resulting melt residue could explain subsequent migration of the plume/lithosphere and the formation of Tharsis at the dichotomy boundary (Zhong, 2009).…”