Results 21 to 30 of about 12,186 (151)

饲养东北虎野化训练的探讨

open access: yes野生动物学报, 2010
对饲养东北虎的野化训练,是东北虎日常饲养管理的重要环节,更是实现日后放虎归山的基础性工作之一。本文是在东北虎繁育中心为期1个月的调查研究基础上,研究了人工模拟条件下对饲养东北虎野化训练的现况,指出管理方式、饲喂模式等制度上原因对饲养东北虎野性和行为恢复的影响是东北虎野化训练存在的主要问题。同时为今后东北虎野化训练提出了改进设想。阐明人工模拟野生生境困难和食物链模拟困难是饲养东北虎野化训练难以展开的主要原因。
朱蕴杉, 张庆, 许鲁
doaj   +2 more sources

猎犬训练原理和方法

open access: yes野生动物学报, 1986
用犬进行狩猎是大家所熟悉的。把一般的犬变成猎犬,须加以严格训练。不经训练的犬,就不可能准确的听从指挥成功的进行狩猎。对猎人不但无用反而有害。比如:有的犬遇到大型猛兽它就胆怯,向回逃跑,将兽引向猎人,酿成杀身之祸。经过训练的犬,能保护主人,捕、咬猛兽,或是将猛兽引走,在关键时刻可使主人化险为夷,同时还可将猎物捕获。一、训练猎犬的主要原理犬有灵敏的嗅觉、视觉、和听觉。外界环境的变化,对犬的各种刺激都将引起相应的反映 ...
刘国义
doaj   +2 more sources

圈养赤大袋鼠(Macropus rufus)的行为训练

open access: yes野生动物学报, 2015
对赤大袋鼠进行行为训练有利于建立赤大袋鼠与饲养员的互信关系,减少赤大袋鼠在饲养管理工作中的应激反应。选取4只成年雌性赤大袋鼠进行了为期1个月的行为训练工作。训练目标为:赤大袋鼠能够跟随目标棒移动,并主动上秤进行体重称量。在行为训练过程中经历了脱敏、建立响片条件反射、引入目标棒、跟随目标棒移动、奖励延迟、行为保持等几个阶段。克服了赤大袋鼠白天活跃度低,可视能力弱的训练难点,大大减少了健康体检时赤大袋鼠体重的称量时间。
赵玲玲 王国栋 梁作敏 付兆水 胡 俊 蒋 迟
doaj   +1 more source

基于改进TD3算法的机械臂智能规划方法研究

open access: yes智能科学与技术学报, 2022
针对某卫星搭载的4自由度机械臂轨迹规划问题,提出了一种基于改进的双延迟深度确定性策略梯度(TD3)算法的智能规划方法。该方法采用分阶段训练策略,在预训练阶段,采用了目标位置引导联合TD3算法进行轨迹优化的混合规划策略,训练结束后规划算法能够在机械臂关节空间对任意起点、终点进行速度轨迹的自主规划。这种目标引导机制减少了训练时不必要的探索,在一定程度上解决了高维动作空间中学习效率低下的问题。在二次训练阶段,首先通过示教获得一条无碰撞的安全参考轨迹,然后在训练过程中不断对这条轨迹进行模仿 ...
张强   +4 more
doaj   +1 more source

表象训练在校园足球教学训练中运用效果探究 [PDF]

open access: yes, 2018
表象训练是体育教学活动中最为常见、有效的教学形式。通过表象\"视觉化\"训练,通过情景再现的方式,将当时的场景在学生大脑中进行重现,有助于学生掌握正确的技术,提高了学生的技能和水平。同时也有效保证了教学质量和教学效果。本论文以表象训练与校园足球教学为研究出发点 ...
陈志辉
core   +1 more source

Emerging applications of large language models in ecology and conservation science

open access: yesConservation Biology, EarlyView.
Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides   +5 more
wiley   +1 more source

Integrating fossil data in ecological niche models to improve predictions of future habitat of Caribbean corals

open access: yesConservation Biology, EarlyView.
Abstract Ecological niche models (ENMs) are used to assess the abiotic preferences of species by linking their occurrences to the environmental conditions in which they live. We developed a fossil‐informed ENM framework that integrates mid‐Holocene and modern occurrences to test niche stability and reconstruct abiotic niche characteristics for four ...
Claire. M. Williams   +3 more
wiley   +1 more source

Dual‐Metal Co‐Doping Strategy Enhances the Hydrogen Dissociation and Hydrogen Release Performance of LiBH4 Assisted by Ensemble Learning

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT LiBH4 has drawn significant attention due to its high theoretical hydrogen storage capacity of 18.5 wt%, yet its practical application is hindered by the harsh dehydrogenation conditions. This paper proposes a strategy integrating ensemble learning with density functional theory (EL–DFT) for rapidly screening modified LiBH4 systems that ...
Zishan Luo   +11 more
wiley   +1 more source

Multi‐barcoding‐based species identification using a hierarchical attention network with staged curriculum learning

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 4, Page 1143-1160, April 2026.
Abstract DNA barcode‐based species identification has become pivotal in biodiversity research. Current barcoding‐based deep learning methods have advantages in species identification but exhibit significant limitations. By using COI barcoding alone, previous studies were unable to fully capture species identification features. Prior methods showed that
Bin Ye   +4 more
wiley   +1 more source

ROV模拟训练器

open access: yes, 2021
本实用新型属于潜水器模拟训练领域,具体说是ROV模拟训练器。包括:操作面板、显示器支架、液晶显示屏、控制系统以及控制柜;其中,所述操作面板安装在控制柜的顶面上,且操作面板与控制柜为一体结构;所述控制系统设于控制柜内,且所述控制柜正面开设有对开柜门,控制柜背面与显示器支架连接;所述显示器支架上设有液晶显示屏,所述液晶显示屏通过线缆与控制系统连接,且液晶显示屏设于操作面板以上的显示器支架上。本实用新型中模拟训练器操作面板与实际ROV操作面板相同,熟练掌握后可直接实际操控ROV ...
李彬   +5 more
core  

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