Results 21 to 30 of about 14,197 (189)

Comparative species distribution model framework for marine conservation and its application to loggerhead turtles in the Mediterranean

open access: yesConservation Biology, EarlyView.
Abstract Modeling species distributions in dynamic pelagic environments remains challenging, particularly for wide‐ranging and highly mobile species when there is limited guidance on model performance. This limitation constrains the effective use of species distribution models (SDMs) in marine conservation, where robust and transferable predictions are
E. Pasanisi   +32 more
wiley   +1 more source

Subspecies taxonomy reflects social and geographic patterns of taxonomic effort in tetrapods

open access: yesConservation Biology, EarlyView.
Abstract Subspecies have been used in conservation biology to account for intraspecific patterns in genetic diversity, which is crucial to long‐term population viability. Although over 3200 subspecies are currently assessed by the International Union for Conservation of Nature Red List, their biological relevance remains controversial.
Jhonny J. M. Guedes   +3 more
wiley   +1 more source

Genomics‐informed management of ex situ populations

open access: yesConservation Biology, EarlyView.
Abstract The European Association of Zoos and Aquariums (EAZA) manages insurance populations for hundreds of species through its EAZA ex situ programs (EEPs). EEPs help safeguard against extinction in the wild and provide source populations for genetic rescue programs.
Cock van Oosterhout   +8 more
wiley   +1 more source

A Review and Critique of Methods and Knowledge Gaps in Quantifying Spillover Effects from Protected Areas

open access: yesConservation Biology, EarlyView.
Abstract The sustainability of area‐based conservation initiatives depends on their value to society. Conservation often focuses inside protected areas, but the impacts of protected areas beyond their boundaries (spillovers) are critical for their social license.
Ilaria Gliottone   +5 more
wiley   +1 more source

基于改进载波移相SPWM的链式STATCOM电容电压平衡控制策略

open access: yesGaoya dianqi, 2012
介绍了传统载波移相SPWM及脉冲循环换位调制策略,指出了上述方法由于级联H逆变桥的电路参数及损耗差异等因素,无法真正实现链式STATCOM的电容电压平衡。笔者通过对传统载波移相SPWM调制策略进行改进,提出了一种新的链式STATCOM电容电压平衡控制策略,分析了该策略的基本原理与实现过程。通过PSCAD/EMTDC对该控制策略进行了仿真,结果说明,该策略可以很好地实现电容电压的平衡,而且对上层控制、装置的谐波特性不会产生影响。
刘正富, 徐政, 刘为群
doaj  

Synthesis of Pollinator‐Friendly Management in European Protected Areas

open access: yesConservation Biology, EarlyView.
Effectiveness of pollinator‐friendly management in European protected areas. Abstract Pollinators are important to humans and nature due to their role in ecosystem functioning and services. Research on the effects of pollinator management in protected areas is insufficient compared with that on farmlands and urban areas, potentially hindering ...
Gabriella Süle   +45 more
wiley   +1 more source

Methodology to identify ecologically matching areas and its applications in conservation planning

open access: yesConservation Biology, EarlyView.
Abstract Identifying ecologically matching areas is both challenging and critical for understanding spatial patterns of biodiversity and advancing conservation planning. However, existing approaches often lack spatial flexibility, overlook shape and size constraints, or rely on limited environmental parameters, reducing their effectiveness in real ...
Pietro Milanesi   +7 more
wiley   +1 more source

The obsolescence of protected area categories in a polycrisis world

open access: yesConservation Biology, EarlyView.
Abstract Current global conservation models face significant limitations in addressing the global polycrisis, and the constraints of the International Union for Conservation of Nature protected area (PA) classification system are part of the issue. The principles of the new conservation paradigm—governance, equity, and interculturality—are not viable ...
Pamela Esther Degele
wiley   +1 more source

Protected areas on international borders show uneven conservation outcomes

open access: yesConservation Biology, EarlyView.
Abstract Border protected areas (BPAs) are national protected areas that are immediately adjacent to a country's border or span two or more countries; they are characterized by distinctive opportunities and pressures. They play a critical role in protecting carbon‐rich ecosystems, conserving endangered biodiversity, reducing cross‐border environmental ...
Rachakonda Sreekar   +10 more
wiley   +1 more source

基于DQN的列车节能驾驶控制方法

open access: yes智能科学与技术学报, 2020
随着轨道交通网络规模的扩大和列车运营间隔的缩短,列车牵引能耗在快速增加。因此,通过优化列车的驾驶策略降低牵引能耗,对于轨道交通系统的节能减排具有重大意义。针对列车的驾驶策略优化问题,提出一种基于深度 Q 网络(DQN)的列车节能驾驶控制方法。首先介绍了传统的列车节能驾驶问题并构造其反问题,即通过分配最少的能耗达到规定运行时分。进一步将该问题转化为有限马尔可夫决策过程(MDP),通过设计状态动作值函数、定义动作策略选取方法等,构建基于 DQN 方法的列车节能驾驶控制方法。通过实际驾驶数据对DQN 进行训练,
宿帅   +4 more
doaj  

Home - About - Disclaimer - Privacy