Results 61 to 70 of about 14,295 (168)
Experimental methods for wind tunnel studies of seed dispersal by wind
Applications in Plant Sciences, Volume 14, Issue 1, January-February 2026.Abstract The complexity and variability of natural environments make quantitative studies of seed wind dispersal challenging. Wind tunnel experiments offer a controlled alternative to investigate the mechanisms of seed wind dispersal. This review focuses on wind tunnels and the associated technologies used for studying seed wind dispersal, including ...
Liang Tian +5 more
wiley +1 more source
Gaoya dianqi, 2015 文中研究了当今世界重点风电市场区域的风电场/风力发电机组接入电网技术规定,归纳并分析了风力发电机组设计所需要考虑的风电接入电网技术要求,如有功功率控制、无功功率控制、低电压穿越、高电压穿越、电网适应性、电能质量;同时以风电机组低电压穿越特性为案例,重点探讨了3种主流风电机组低电压穿越能力与电网之间的相互影响,以及各类风力发电机组低电压穿越特性的基本解决思路,对风电场运营部门和电网调度部门有一定的参考价值。
郑翔宇 +5 more
doaj
Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT Bangladesh's goal of achieving high‐income status by 2041 requires dependable, low‐emission, and affordable energy. With near‐universal grid coverage and increasing demand, nuclear energy is a strategic asset for long‐term baseload supply. However, the existing financing model, typified by the country's most expensive $12.65 billion Rooppur ...
Hafiz Ahmed
wiley +1 more source
Dianci bileiqi, 2020 通过建立风机叶片遭受雷击时下行先导发展的物理模型,研究雷击风机叶片背景电势。依据临界长度判据描述叶片上行先导起始过程,研究临界背景电势变化时静止叶片上行先导起始情况,并分析旋转叶片上行先导起始时刻背景电势。基于叶片静止、旋转两种状态与背景电势分布,对风机不同条件下的叶片引雷能力进行评估。研究表明,若雷电情况与大气条件恒定,临界背景电势不变,临界背景电势变化将影响静止叶片上行先导的起始;当叶片转速一定,旋转叶片上行先导起始时刻背景电势取决于临界背景电势;伴随叶片角度与接闪器半径的增大,叶片引雷能力减弱 ...
雷宇航, 蔡国伟, 潘超
doaj
Design and Implementation of Production Management System for Enterprise [PDF]
, 2015 在生产行业中，从接受订货到组织材料生产到最后的产品发货，由于行业本身的特点就是零部件分类繁多、生产流程复杂，因此在这一连串的生产流程、业务流程中常常存在各种各样的问题，在管理上有着非常多的改善需求。同时，生产量的指数型扩张给进一步细化管理带来新的难题，其根源可概括如下：企业的生产管理机制与其市场订货特性、商品特性、制造特性、管理特性不够吻合，企业生产管理机制的设计不够完善。运用信息化自动化平台来解决这一问题，生产管理系统便应运而生。 本文采用SQLServer数据库对我司的生产流程做出详细需求分析 ...
颜顺知
core
Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT The infiltration of counterfeit, fraudulent, and suspect items into civil nuclear supply chains, notably within power generation and medical isotope production, poses severe safety and security threats. The ever‐increasing growth in nuclear installations (70 power plants are under construction and another 100 are in the planning stage) and the
Hafiz Ahmed
wiley +1 more source
Thermal comfort and energy performance of chilled ceiling systems [PDF]
, 2012 Chilled ceiling systems are a relatively new approach to cooling and they have been applied in Europe and other countries for many years. The technology is based on ceiling-based radiant cooling panels coupled with chilled water pipes or coils.
Hui, SCM, Leung, JYC
core
Deep Reinforcement Learning-driven Cross-Community Energy Interaction Optimal Scheduling
, 2023 In order to coordinate energy interactions among various communities and energy conversions among multi-energy subsystems within the multi-community integrated energy system under uncertain conditions, and achieve overall optimization and scheduling of ...
Bu, Fanjin +5 more
core
Gaoya dianqi, 2016 针对风电场建立多机等值模型时等效风机数目不确定的问题,通过分析风电机组的运行机理,以风机的实际参数为聚类指标,引入轮廓系数计算不同等值数目时的轮廓值,选择最优的聚类数目,运用改进分裂H-K聚类算法进行聚类。在MATLAB平台上建立风电场详细模型和聚类模型,在两种风速模式下分析两种模型输出的有功功率和无功功率曲线,结果表明两种模型曲线在同时间点上相对误差率很小,提高了模型精度。文中提出的方法可以运用于风电场的多机等值建模,能够比较准确地反映风电场的动态响应特性。
朱成亮 +4 more
doaj
Gaoya dianqi, 2022 叶片是风电机组的重要组成部分，承担着捕获风能的重要功能，一旦损伤必然导致风机停机，对其进行状态监测十分必要。对风机叶片的监测主要采用无损检测技术，传统方法大都基于电子测量原理，具有抗电磁干扰能力差、无法实现分布式测量等缺点。文中在对比传统无损检测技术灵敏度、效率、抗干扰能力等指标的基础上，重点分析和研究了光纤传感技术用于风机叶片监测的现状。从测量原理、传感器结构、应用实施方法、监测效果等方面，分析了FBG、BOTDA、OFDR以及干涉型光纤传感技术的研究进展 ...
吕安强, 魏伦
doaj