Neglected and underutilized species of plants(NUS)have been identified by the Food and Agriculture Organization as valuable resources for fighting poverty,hunger and malnutrition as they can help make agricultural pro...Neglected and underutilized species of plants(NUS)have been identified by the Food and Agriculture Organization as valuable resources for fighting poverty,hunger and malnutrition as they can help make agricultural production systems more sustainable and resilient.Adaptation of NUS to changing environments over several millennia has rendered most of these plants resistant to pests and climate change.In this paper,we explore the potential values of some of the Mayan fruit trees justifying conservation efforts in their native habitats.Our research was primarily based on a scoping review using Google Scholar.We considered articles published in English,Spanish and Portuguese.Our review rendered two sets of articles including those focusing on the nutritional and medicinal properties of NUS and their products,and those focusing on their uses in traditional medicine.Both sets of papers strongly support arguments for conservation of NUS.Additionally,our scoping review expands and includes a case study on the conservation of NUS,highlighting the critical role of civil society on how it can spearhead rescue efforts of botanical resources through the creation of what is possibly the first arboretum of its kind in the Americas.Among the project's key selling points was not only the rescue of an important component of Yucatan's cultural heritage but its nutritional value as well as its potential medicinal properties.Our paper is not prescriptive on how to preserve or even commercially exploit NUS.It is intended as a thought-provoking piece on the potential of a One Health approach as a multi-sectoral platform to support conservation efforts,while stimulating greater interest in the subject and encouraging more action from the academic and pharmaceutical sectors as well as civil society.展开更多
由于果蔬采摘环境的不确定性和复杂性,机械臂在复杂环境中完成采摘,其路径规划需考虑实时避障。为实现采摘机械臂在不确定环境下安全采摘,提出一种改进RRT的动态避障算法,以提升机械臂在不确定采摘环境的适应性。针对基本快速扩展随机...由于果蔬采摘环境的不确定性和复杂性,机械臂在复杂环境中完成采摘,其路径规划需考虑实时避障。为实现采摘机械臂在不确定环境下安全采摘,提出一种改进RRT的动态避障算法,以提升机械臂在不确定采摘环境的适应性。针对基本快速扩展随机树算法(Rapidly-exploring Random Trees,RRT)在动态环境下迭代时间长、路径长、适应性差等问题,在RRT算法的基础上,引入目标导向策略,把终点以一定概率作为随机采样点的采样方向,提高算法的迭代效率;引入动态检测机制,对已完成规划的初始路径进行实时检测,使算法适应动态变化的环境。通过仿真分析改进RRT算法,结果表明:改进RRT算法的路径减少16%,迭代时间缩短86.5%;同时,动态检测机制使算法适应动态环境。展开更多
职业目标定位是大学生职业生涯规划的起点和落脚点。事实证明,如果将大学生职业目标视为需求动机、市场约束、职业特征以及个性特质的函数,那么传统意义上依靠经验分析方法获得的大学生的职业目标之定位过程和结果就不一定可靠。笔者在...职业目标定位是大学生职业生涯规划的起点和落脚点。事实证明,如果将大学生职业目标视为需求动机、市场约束、职业特征以及个性特质的函数,那么传统意义上依靠经验分析方法获得的大学生的职业目标之定位过程和结果就不一定可靠。笔者在对大学生的生涯规划指导实践基础上,从职业定位的需求性选择角度出发,提出综合利用头脑风暴法(Brain storming)、态势分析法(SWOT分析法)和决策树分析法(Decision Tree Analysis),简称BSD法,形成一套基于"识别—筛选—定位"模式的应用工具箱,帮助大学生实现职业目标的科学定位。展开更多
文摘Neglected and underutilized species of plants(NUS)have been identified by the Food and Agriculture Organization as valuable resources for fighting poverty,hunger and malnutrition as they can help make agricultural production systems more sustainable and resilient.Adaptation of NUS to changing environments over several millennia has rendered most of these plants resistant to pests and climate change.In this paper,we explore the potential values of some of the Mayan fruit trees justifying conservation efforts in their native habitats.Our research was primarily based on a scoping review using Google Scholar.We considered articles published in English,Spanish and Portuguese.Our review rendered two sets of articles including those focusing on the nutritional and medicinal properties of NUS and their products,and those focusing on their uses in traditional medicine.Both sets of papers strongly support arguments for conservation of NUS.Additionally,our scoping review expands and includes a case study on the conservation of NUS,highlighting the critical role of civil society on how it can spearhead rescue efforts of botanical resources through the creation of what is possibly the first arboretum of its kind in the Americas.Among the project's key selling points was not only the rescue of an important component of Yucatan's cultural heritage but its nutritional value as well as its potential medicinal properties.Our paper is not prescriptive on how to preserve or even commercially exploit NUS.It is intended as a thought-provoking piece on the potential of a One Health approach as a multi-sectoral platform to support conservation efforts,while stimulating greater interest in the subject and encouraging more action from the academic and pharmaceutical sectors as well as civil society.
文摘由于果蔬采摘环境的不确定性和复杂性,机械臂在复杂环境中完成采摘,其路径规划需考虑实时避障。为实现采摘机械臂在不确定环境下安全采摘,提出一种改进RRT的动态避障算法,以提升机械臂在不确定采摘环境的适应性。针对基本快速扩展随机树算法(Rapidly-exploring Random Trees,RRT)在动态环境下迭代时间长、路径长、适应性差等问题,在RRT算法的基础上,引入目标导向策略,把终点以一定概率作为随机采样点的采样方向,提高算法的迭代效率;引入动态检测机制,对已完成规划的初始路径进行实时检测,使算法适应动态变化的环境。通过仿真分析改进RRT算法,结果表明:改进RRT算法的路径减少16%,迭代时间缩短86.5%;同时,动态检测机制使算法适应动态环境。
文摘职业目标定位是大学生职业生涯规划的起点和落脚点。事实证明,如果将大学生职业目标视为需求动机、市场约束、职业特征以及个性特质的函数,那么传统意义上依靠经验分析方法获得的大学生的职业目标之定位过程和结果就不一定可靠。笔者在对大学生的生涯规划指导实践基础上,从职业定位的需求性选择角度出发,提出综合利用头脑风暴法(Brain storming)、态势分析法(SWOT分析法)和决策树分析法(Decision Tree Analysis),简称BSD法,形成一套基于"识别—筛选—定位"模式的应用工具箱,帮助大学生实现职业目标的科学定位。
