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近年来，城市洪涝灾害的频繁发生已引起专家学者的广泛关注。基于灾害系统理论，综合考虑致灾因子、孕灾环境、承灾体、防灾减灾能力等因素，从危险性和易损性两大风险要素出发，利用ArcGIS技术和模糊综合评价法，对洪涝频发的深圳市进行城市暴雨洪涝灾害风险评估区划，最终生成以100m×100m为基本评价单元的暴雨洪涝灾害风险分布图。结果表明：深圳市洪涝灾害高风险区主要分布在宝安区西部、福田区、罗湖区西部、龙岗...
Online Energy Management Strategy for Hybrid Electric Vehicle
Online Energy Management Strategy Hybrid Electric Vehicle
2016/1/22
In this paper, we present an online energy management strategy for parallel hybrid electric vehicle equipped with two power sources. The strategy orchestrates a fuel-based internal combustion engine a...
The Objectives for Implementing an Internal Carbon Charge at a Major Research University
Internal Carbon Charge Major Research University
2015/7/31
Goal of University Carbon Charge
• The goal of climate policy is a “credible and predictable price of ca
rbon into the distant
future”
• Given the magnitude of investments needed to a...
Design And Evaluation Of Th Umass WF-1 Kilowat Hour Meter
Design Evaluation OF-1 Kilowatt Hour Meter
2014/10/21
Design And Evaluation Of Th Umass WF-1 Kilowat Hour Meter.
Wind Turbine Blade Stress Analysis And Natural Frequencies
Wind Turbine Blade Stress Analysis Natural Frequencies
2014/10/21
Wind Turbine Blade Stress Analysis And Natural Frequencies.
针对湿气的在线不分离测量，提出了一种新型内外管差压式流量计，并且进行了湿气的实验测试。对本装置湿气测量模型的研究，首先选用几种经典测量模型对其虚高值进行了预测，预测结果显示“比松模型”预测效果最佳。鉴于经典模型-半经验公式的局限性，内外管差压流量计的湿气新测量模型拟合，参照数据融合法的原则，建立湿气虚高值与其特性参数之间的非线性关系式。误差分析验证表明，新测量模型平均误差在1.6%以内，且误差波动...
座底式水平轴潮流能电站载体设计及性能分析
水平轴水轮机 载体 座底式 发电装置
2014/3/14
潮流能是一种可再生清洁能源,它的有效开发利用对于改善中国的能源架构具有重要意义。潮流能电站在技术开发和工程示范两个方面都在快速发展,但关于潮流能电站载体设计及其性能分析方面的研究较少,远远不能满足当今技术应用快速发展的需求。本文以导流增强型潮流能电站为研究对象,基于座底式水平轴潮流能转换技术,开展潮流能发电装置的总体设计,提出了3种载体方案,并对其进行流体动力载荷计算及支撑结构强度分析。通过对不同...
重油含水率测量系统中的信息融合方法
含水率 射频传感器 信息融合
2010/12/28
在重油含水率测量系统中,根据水的介电常数远远大于重油的介电常数,因而两者所呈现的射频阻抗特性不同的原理,可使用射频电容传感器.但在测试过程中发现传感器的输出除受水分这1个参量的影响外,还受温度的影响,从而影响系统性能和测量精度.为此,探讨了对传感器输入、输出信息进行融合处理的方法,以提高目标参量的测量精度和测量系统的温度稳定性.2个传感器所输出的信息融合方法有多种,作者采用了曲面拟合法.实验结果表...
在最新一期的国际地学顶级期刊《地球科学评论》（Earth-Science Reviews）上，中科院地球化学研究所刘再华研究员等的关于碳酸盐风化碳汇的研究成果引人关注，这篇题为“大气CO2源汇估算的新方向：综合考虑碳酸盐溶解、全球水循环和水生生物光合作用的共同影响”的文章，是继他们“发现全球水循环中的溶解无机碳可能是一个重要的碳汇”研究成果（该成果获2007年度中国基础研究十大新闻）的基础上，再次...
Influence of Catalyst Type and Regeneration on Upgrading of Crude Bio-oil through Catalytical Thermal Cracking
catalytic cracking biomass catalyst
2009/11/16
Catalysts, such as HZSM-5(Si/Al=50), HZSM-5(25), zeolite 5A, CaHZSM-5(50), ZnHZSM-5(50), and Kaolin were used in upgrading of crude biomass oil from pyrolysis in a fixed-bed reactor under atmospheric ...
EVALUATION OF DISTRIBUTIONAL SOLAR RADIATION PARAMETERS OF čAčAK USING LONG-TERM MEASURED GLOBAL SOLAR RADIATION DATA
renewable energy solar radiation optimal tilt angle
2009/10/14
Serbia is becoming more dependet on imported primary energy to meet its increasing energy demand. The ratio of indigenous primary energy production to primary energy consumption is decreasing. Therefo...
ENERGY SAVINGS FOR RESIDENTIAL HEATING IN TWO PAIRS OF BUILDINGS IN NEW BELGRADE ACHIEVED BY MEASURING ACTUALLY CONSUMED ENERGY
district heating system heating consumption measurement allocators
2009/10/13
The paper presents results of heating energy consumption measurements in two pairs of buildings in New Belgrade for two heating seasons. Influence of these measurements on energy savings is also prese...
Stable Isotope Mass Balance Method to Find the Water Budget of a Lake
Stable Isotope Water Budget Isotope Mass Balance Mogan Lake
2009/10/13
Determination of a lake water budget is essential for water resources engineers. Some of these elements,such as surface inflow, precipitation, evaporation, surface outflow, and variation of lake level...
BIOMASS GASIFICATION IN SMALL-SCALE UNITS FOR THE USE IN AGRICULTURE AND FORESTRY IN FR YUGOSLAVIA
BIOMASS GASIFICATION SMALL-SCALE UNITS AGRICULTURE FORESTRY FR YUGOSLAVIA
2009/10/13
This paper is the survey of the state-of-the art and prospects of biomass gasification in FR Yugoslavia. Combustion in small-scale units is the most common at present. Potentials of available biomass ...