نتایج جستجو برای: مدل ceres

تعداد نتایج: 121102  

Journal: :Icarus 2022

The Dwarf Planet Ceres revealed the presence of ammonia and other unique properties compared to asteroids in main belt which suggests that it was not formed situ. We model early dynamical evolution outer Solar System study possible mechanisms implant a Ceres-sized planetesimal asteroid from trans-Saturnian region. calculate fraction population planetesimals are captured is range 2.8e-5 1.2e-3 d...

Journal: :Nature Astronomy 2023

Low-albedo asteroids preserve a record of the primordial solar system planetesimals and conditions in which nebula was active. However, origin evolution these are not well-constrained. Here we measured visible near-infrared (0.5 - 4.0 microns) spectra low-albedo mid-outer main belt. We show that numerous large (d > 100 km) dark (geometric albedo < 0.09) exterior to dwarf planet Ceres' orbit sha...

2007
ShinIchi Esumi

The CERES/NA45 experiment measures low mass electron pair production in Pb-Au collisions at 158AGeV at the CERN SPS. In this paper, we present the electron pair enhancement in the mass range 0:2 < mee < 0:7 GeV/c 2 , it increases more than linear with charged multiplicity and is most pronounced at low pair pT < 0:5 GeV/c. Transverse mass and rapidity distributions for charged hadrons h + ? h ? ...

Journal: :CoRR 2015
David Cerna Alexander Leitsch

The schematic CERES method [?] is a recently developed method of cut elimination for proof schemata, that is a sequence of proofs with a recursive construction. Proof schemata can be thought of as a way to circumvent adding an induction rule to the LK-calculus. In this work, we formalize a schematic version of the infinitary pigeonhole principle, which we call the Non-injectivity Assertion sche...

2017
Harry Y. MCSWEEN Joshua P. EMERY Andrew S. RIVKIN Michael J. TOPLIS Julie C. CASTILLO-ROGEZ Thomas H. PRETTYMAN M. Cristina DE SANCTIS Carle M. PIETERS Carol A. RAYMOND Christopher T. RUSSELL

The mineralogy and geochemistry of Ceres, as constrained by Dawn’s instruments, are broadly consistent with a carbonaceous chondrite (CM/CI) bulk composition. Differences explainable by Ceres’s more advanced alteration include the formation of Mgrich serpentine and ammoniated clay; a greater proportion of carbonate and lesser organic matter; amounts of magnetite, sulfide, and carbon that could ...

2014
S. J. Desch J. C. Castillo-Rogez

Introduction: The main-belt object Ceres (radius≈475 km, density≈2100 kg m-3 , semi-major axis 2.7 AU), is an exciting place to explore planetary hab-itability. Abundant volatiles could have shaped Ceres in a way analogous to that suspected on icy moons. Hydrothermalism: Ceres' surface seems blanketed by products of the interaction between silicate rock and liquid water, including carbonates [1...

Journal: : 2022

در این مقاله یک مدل ریاضی برای مسئله سیستم تولیدی همکارانه ساخت بر اساس سفارش با رعایت انصاف تخصیص بار‌های تولید طراحی شده است. اهداف اصلی مدل، کمینه‌سازی هزینه‌‌های کل و حداکثر استفاده از منابع به‌منظور عادلانه شرایط عدم­قطعیت کنترل پارامتر‌های غیرقطعی روش برنامه‌ریزی فازی ‌شده نتایج نشان می‌دهد افزایش نرخ عدم‌قطعیت، می­یابد. ازآنجاکه ظرفیت کارخانه‌ها ثابت است، مقدار تقاضا، هر کارخانه نیز می­ی...

2003
Urban Bilstrup Magnus Jonsson Bertil Svensson

In the major reorganisation that took place at Halmstad University during 1999-2000, the new School of Information Science, Computer and Electrical Engineering (IDE) was formed. The School of IDE is divided into five laboratories; Computing and Communication (CC), Electronics and Physics (EF), Intelligent Systems (IS), Mathematics (MA), and Man and Information technology (MI). The division into...

Journal: :Elementa 2022

Accurate multidecadal radiative flux records are vital to understand Arctic amplification and constrain climate model uncertainties. Uncertainty in the NASA Clouds Earth’s Radiant Energy System (CERES)-derived irradiances is larger over sea ice than any other surface type comes from several sources. The year-long Multidisciplinary drifting Observatory for Study of Climate (MOSAiC) expedition ce...

Journal: :Atmospheric Research 2021

Atmospheric downward longwave radiation (DLR) is a key component of the surface energy budget in Earth system. Satellite retrievals and atmospheric reanalysis estimates are two typical approaches to obtaining spatio-temporally continuous DLR product. In this study, we evaluated product from latest ERA5 well-known Clouds Earth's Radiant Energy System (CERES) satellite retrievals, against high-qu...

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