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Investigating temporal relationships between rainfall, soil moisture and MODIS-derived NDVI and EVI for six sites in Africa

This study investigates temporal relationships between vegetation growth, rainfall, and soil moisture for six sites located in sub-Saharan and southern Africa for the period 2005-2009. Specifically, seasonal components of time series of Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) composites from the Moderate Resolution Imaging Spectroradiometer (MODIS) and hal

Pathloss Estimation Techniques for Incomplete Channel Measurement Data

The pathloss exponent and the variance of the large-scale fading are two parameters that are of great importance when modeling or characterizing wireless propagation channels. The pathloss is typically modeled using a single-slope log-distance power law model, whereas the large-scale fading is modeled using a log-normal distribution. In practice, the received signal is affected by noise and it mig

In-Service Information Required in a Redesign Task: An Analysis of Documents from the Aerospace Industry

This research was undertaken in an aerospace company, which manufactures aero engines and also offers contracts, under which it remains responsible for the maintenance of engines. These contracts allow the company to collect far more data about the in-service performance of their engines than was previously available. This paper aims at understanding what parts of this in-service information are a

Web-based Interactive VR-CAD System for Conceptual design and Analysis

To overcome the bottleneck of the one-way translation from VR (virtual reality) to CAD in VR-based CAD system, this paper proposes a Web-based VR-CAD system WVCD (Web-based virtual conceptual designer) to support both customers’ and design team members' involvement in the conceptual design and analysis activity over the Internet. It provides users with both parametric and freehand methods to creat

The Evolution of Benchmarking through Municipal Benchmarking Networks - An Evaluation of a National Benchmarking project in Swedish Municipalities?

In order to stimulate benchmarking and comparisons between different municipal activities, the Swedish Association of Local Authorities and Regions (SALAR) and the Ministry of Finance in the year of 2007 initiated a voluntary nationwide Swedish benchmarking project (NBP) in order to develop new measures that capture the relationship between cost and quality. The ambition is that the new measures s

A Generalized Software System for Accurate and Efficient Management of Application Performance Goals

A number of techniques have been proposed to provide run- time performance guarantees while minimizing power consumption. One drawback of existing approaches is that they work only on a fixed set of components (or actuators) that must be specified at design time. If new components become available, these management systems must be redesigned and reimplemented. In this paper, we propose PTRADE, a n