نتایج جستجو برای: mars modeling

تعداد نتایج: 402551  

Journal: :Journal of Advances in Modeling Earth Systems 2012

Journal: :Space Science Reviews 2011

Journal: :Expert Syst. Appl. 2005
Tian-Shyug Lee I-Fei Chen

The objective of the proposed study is to explore the performance of credit scoring using a two-stage hybrid modeling procedure with artificial neural networks and multivariate adaptive regression splines (MARS). The rationale under the analyses is firstly to use MARS in building the credit scoring model, the obtained significant variables are then served as the input nodes of the neural networ...

Journal: :Geophysical research letters 1999
B M Cheng E P Chew C P Liu M Bahou Y P Lee Y L Yung M F Gerstell

The history and size of the water reservoirs on early Mars can be constrained using isotopic ratios of deuterium to hydrogen. We present new laboratory measurements of the ultraviolet cross-sections of H2O and its isotopomers, and modeling calculations in support of a photo-induced fractionation effect (PHIFE), that reconciles a discrepancy between past theoretical modeling and recent observati...

2012
Kelly Jean Kolb Jon D. Pelletier Alfred S. McEwen

Our study investigates possible formation mechanisms of the very recent bright gully deposits (BGDs) observed on Mars in order to assess if liquid water was required. We use two models in our assessment: a one-dimensional (1D) kinematic model to model dry granular flows and a two-dimensional (2D) fluiddynamic model, FLO-2D (O’Brien et al., 1993, FLO Engineering), to model water-rich and wet sed...

Journal: :Journal Of Geophysical Research: Planets 2022

HDO and the D/H ratio are essential to understand Mars past present climate, in particular with regard evolution through ages of Martian water cycle. We here new modeling developments cycle LMD GCM. The study aims at exploring behaviour its sensitivity ice clouds formulation fractionation by condensation. Our GCM simulations compared observations provided Atmospheric Chemistry Suite (ACS) on bo...

2013
Chuntao Leng

In order to provide the research foundation for future exploration of the unknown world, a mars rover prototype is developed for studying the related technologies. In this study the development of a mars rover prototype with mapping and localization system is presented. At first, the architecture of the mars rover is designed to meet the motion requirement on rough terrains. The sensory system ...

Journal: :Journal of Geophysical Research 2004

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