搜索结果: 31-45 共查到“工学 variability”相关记录60条 . 查询时间(0.089 秒)
Indoor and Outdoor Particle Number and Mass Concentrations in Athens. Sources, Sinks and Variability of Aerosol Parameters
PM10/PM2 Particle number size distribution Black carbon Residential microenvironment Indoor/outdoor sources
2016/3/28
The scope of this work was to characterize PM mass and number concentration at typical residential microenvironments
in the centre of Athens and to examine the relative contribution of the indoor and...
Understanding the Variability of Z-R Relationships Caused by Natural Variations in Raindrop Size Distributions (DSD): Implication of Drop Size and Number
Raindrop Size Distribution Radar Reflectivity Factor
2013/2/26
In the issue of rainfall estimation by radar through the necessary relationship between radar reflectivity Z and rain rate R (Z-R), the main limitation is attributed to the variability of this relatio...
UNDERSTANDING SPATIAL VARIABILITY OF CROPPING SYSTEM RESPONSE TO CLIMATE CHANGE IN PUNJAB STATE OF INDIA USING REMOTE SENSING DATA AND SIMULATION MODEL
CropSyst Spatial impact HadCM3 A2 B2 Agricultural system yield
2014/5/6
The present study investigated the impact of climate change, as projected by the Global Climate Model, HadCM3 for two different storyline (A2, B2), on the total crop production of Punjab state of Indi...
VARIABILITY OF ATMOSPHERIC CO2 OVER INDIA AND SURROUNDING OCEANS AND CONTROL BY SURFACE FLUXES
Carbon cycle Atmospheric InfraRed Sounder Net Primary Productivity flux exchanges terrestrial biosphere Indian Ocean
2014/5/6
In the present study, seasonal and inter-annual variability of atmospheric CO2 concentration over India and surrounding oceans during 2002–2010 derived from Atmospheric InfrarRed Sounder observation a...
INTER-ANNUAL VARIABILITY OF NET ECOSYSTEM PRODUCTIVITY OVER INDIA
CASA net primary productivity inter annual variability remote sensing carbon cycle India
2014/5/6
The net ecosystem productivity (NEP) is the estimates of net carbon exchanges between the vegetation-soil system and the atmosphere. Estimates of NEP could play important role in defining a terrestria...
Urban-scale Spatial-temporal Variability of Black Carbon and Winter Residential Wood Combustion Particles
Spatial-temporal variability Black carbon (BC) Delta-C Residential wood combustion (RWC)
2016/3/28
It has been suggested that certain organic aerosol components of wood smoke have enhanced ultraviolet absorption at
370 nm relative to 880 nm in two-wavelength aethalometer black carbon (BC) measurem...
Crude oil price variability and its impact on ethanol prices
biofuels crude oil gasoline, ethanol cointegration
2014/2/27
The world annual biofuel production has exceeded 100 billion litres in 2009. The development of the biofuel production is partly influenced by the government support programs and partly by the develop...
黄土区农草混合利用坡面土壤水分空间变异性（Spatial Variability of Soil Water Content on a Cropland-grassland Mixed Slope Land in the Loess Plateau, China）
土壤水分 农草混合结构 空间变异性
2010/12/29
通过对黄土区农草混合利用坡面的土壤水分分析，研究土地利用结构对土壤水分空间变异特性的影响。结果表明，研究区坡面土壤水分呈中等变异，且农草混合利用结构明显增加了土壤水分的空间变异强度，坡面土壤水分具有明显空间结构性。干湿条件下坡面0～60cm土层平均含水率的半方差最优理论模型分别为高斯模型和球状模型，且干旱条件较湿润条件下保持较高的基台值和变程，而块金值/基台值相对较低。Kriging插值结果显示...
Analysis of Monthly, Seasonal and Annual Air Temperature Variability and Trends in Taiz City - Republic of Yemen
Air Temperature Climate Change Republic of Yemen Taiz City Mann–Kendall Test Trends
2013/3/13
Climate change is one of the most important issues of today’s World. Climate scientists have concluded that the earth’s surface air temperature warmed by 0.6 ± 0.2℃ during the 20th century, accompanie...
Na/Ca variability in coral skeletons
coral skeleton Na/Ca ratio Mg/Ca ratio Sr/Ca ratio S/Ca ratio marine aragonite
2017/8/9
In aragonitic coral skeletons, the Na/Ca molar ratio is clearly higher than any other minor- or trace-element/Ca molar ratio (i.e., Na/Ca > Sr/Ca ≥ S/Ca ≥ F/Ca ≈ Mg/Ca). However, little attention has ...
Spectral Analysis of Solar Variability and their Possible Role on the Global Warming
Global Rurface Temperature Geomagnetic Indices Solar Variability
2013/3/13
Our understanding of the indirect effect of changes in solar output and feedbacks in the climate system is minimal. There is much need to refine our understanding of key natural forcing mechanisms of ...
Using MMSE to improve session variability estimation
speaker verification session variability MMSE model compensation
2013/6/28
In this paper, the Session Variability Subspace Projection (SVSP) method based on model compensation for speaker verification was improved using the Minimum Mean Square Error (MMSE) criterion. The iss...
Diurnal and Seasonal Air Ion Variability at Rural Station Ramanandnagar (17°2N, 74°E), India
Gerdien condenser Transpiration Vegetation Temperature inversion Radio-active aerosol
2016/3/29
High-energy radiations, such as alpha and beta particles or gamma radiation, ionize air molecules into pairs of positive
ions and free electrons. The diurnal and seasonal variations of these air ions...
Mapping spatial variability of soil properties and yield by using geostatic method
precision agriculture geostatistics maps spatial variability
2014/2/26
The Czech University of Agriculture in Prague (CUA) Farm at L醤y started with precision farming technology several years ago. In the first step the yield and nutrients content were monitored. For prec...
Main Patterns of Variability in Beech Tree-Ring Chronologies from Different Sites in Slovenia and Their Relation to Climate
beech Fagus sylvatica Slovenia dendrochronology tree-rings local chronologies climate
2009/11/27
Fourteen local tree-ring chronologies of beech (Fagus sylvatica L.) from different sites in Slovenia, elevations 300-1,415 m a.s.l., were constructed. Basic
statistics of the chronologies (raw, stand...