soil compaction can occur as a result of a number of factors. one of the most important factors is soil response to pressures imposed by wheels and soil engaging tools. this research investigated the effect of tyre load and inflation pressure on soil compaction-related factors. these factors include rut width, rut depth, cone index and horizontal force in different layers of soil profile. in th...

In order to improve accuracy and convergence speed for flight trajectory optimization program in flight management computer and enhance its maintainability, an improved particle swarm optimization (PSO) algorithm with object-oriented performance database is proposed. Firstly, an object-oriented performance database is built by Microsoft Visual C++ and MATLAB/SIMULINK mixed software development ...

A physically based retrieval algorithm was developed to estimate snowfall over land. The retrieval algorithm relies on the MM5 model that generates the vertical structure of a snow cloud, including snow mass, snow particle effective diameter, and water vapor. The MM5 cloud simulation was used to provide statistics for generating the cloud characteristics. The snow cloud profile and surface emis...

This paper presents a new LPV/H∞ semi-active suspension control strategy for a commercial vehicle equipped with 4 Magneto-Rheological dampers. The proposed approach concerns road adaptation using on-line road profile identification based on a non linear algebraic observer with unknown input. Then, the suspensions forces distribution in each corner of vehicle is performed considering roll dynami...

What does reflection from cloud sides tell us about vertical distribution of cloud droplet sizes? A. Marshak, J. V. Martins, V. Zubko, and Y. J. Kaufman NASA – Goddard Space Flight Center, Climate and Radiation Branch, Greenbelt, MD, USA Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, USA Nortel Government Solutions, Inc., Lanham, MD, USA Recei...

Thermal infrared (IR) radiances measured near 8 microns contain information about the vertical distribution of water vapor (H2O), the water isotopologue HDO, and methane (CH4), key gases in the water and carbon cycles. Previous versions (Version 4 or less) of the TES profile retrieval algorithm used a “spectral-window” approach to minimize uncertainty from interfering species at the expense of ...

This paper examines the information-sharing behavior of firms in a distribution channel context. While information sharing among firms can occur in a horizontal (among competitors) or vertical (channel members) context, previous attempts at modeling information sharing has primarily been restricted to the horizontal context. For marketers, channel alliances are interesting in view of their grow...

Vertical distribution of aerosols in Mexico City during MILAGRO-2006 campaign P. A. Lewandowski, W. E. Eichinger, H. Holder, and J. Prueger IIHR-Hydroscience & Engineering, University of Iowa, Iowa City, Iowa 52242, USA Duke University, Rayleigh, NC, USA National Soil Tilth Laboratory, Ames, IA, USA Received: 8 February 2009 – Accepted: 18 February 2009 – Published: 11 March 2009 Correspondence...

Glaucoma is a leading cause of permanent blindness. Retinal fundus image examination is useful for early detection of glaucoma. In order to evaluate the presence of glaucoma, the ophthalmologists determine the cup and disc areas and they diagnose glaucoma using a vertical cup-to-disc ratio. However, determination of the cup area is very difficult, thus we propose a method to measure the cup-to-...