نتایج جستجو برای: lawn
تعداد نتایج: 1445 فیلتر نتایج به سال:
Plantago virginica L. has invaded many lawn ecosystems in the Eastern part of China. The invasion has incurred an economic cost to remove them. In order to prevent the invasion, it is critical to understand the invasive mechanisms of this species. However, few studies have been conducted on the allelopathic mechanisms of its invasion. In this study, we examined allelopathic effects of P. virgin...
In recent years, there has been an increasing demand for elderly care in Japan due to the problems posed by a declining birthrate and an aging population. To deal with the problem, we aim to develop a multiple wheelchair robot system that moves with multiple companions collaboratively. In actual care, we noticed that for a group of four people, which included wheelchair users and their companio...
Working on new equipments to increase agricultural productivity and safety, reducing human action hardness , Cemagref and Lasmea have developed an help guidance system for agricultural vehicles. The aim of this system is to help the operator to guide the machine in order to give more attention to the order task. To reach this goal, we use a visual perception of the environment because this sens...
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