نتایج جستجو برای: 2007 crop years
تعداد نتایج: 1158511 فیلتر نتایج به سال:
This paper describes a system for detecting and estimating the properties of multiple travel lanes in an urban road network from calibrated video imagery and laser range data acquired by a moving vehicle. The system operates in several stages on multiple processors, fusing detected road markings, obstacles, and curbs into a stable non-parametric estimate of nearby travel lanes. The system incor...
This article presents the architecture of Junior, a robotic vehicle capable of navigating urban environments autonomously. In doing so, the vehicle is able to select its own routes, perceive and interact with other traffic, and execute various urban driving skills including lane changes, U-turns, parking, and merging into moving traffic. The vehicle successfully finished and won second place in...
Recent years have seen much of Australia suffer from severe meteorological drought and a series of climatic extremes (e.g. Bureau of Meteorology 2008a, 2008b). As a result, water resources have widely fallen to record lows, and agricultural production in southern and eastern parts of Australia has been poor with a series of crop failures (e.g. Murray-Darling Basin Commission 2007; Australian Bu...
Geoengineering via solar radiation management could affect agricultural productivity due to changes in temperature, precipitation, and solar radiation. To study rice and maize production changes in China, we used results from 10 climate models participating in the Geoengineering Model Intercomparison Project (GeoMIP) G2 scenario to force the Decision Support System for Agrotechnology Transfer (...
Crop productivity has often been affected by undesirable climatic events such as heat stress, flood, unseasonal rainfall, drought, etc. Historical crop yield estimation and mapping shall provide a pivotal input for food security measures planning purposes. The present study deployed various satellite (i.e., normalized difference vegetation index) gridded precipitation, temperature, evapotranspi...
potato (solanum tuberosum l.) cultivation in two different climates causes difference in its growth process.the most frequently used indicators of growth for plants are the tuber growth rate (tgr), crop growth rate (cgr) and leaf area index (lai). shoot dry weight is the easiest, quickest and least costly component to measure the competitive features of plants.the results of some studies showed...
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