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条件植被温度指数（VTCI）综合了地表主要参数——归一化植被指数（NDVI）和地表温度（LST），能够较为准确地对干旱进行监测，可为抗旱救灾、作物估产等提供科学依据。为了提高VTCI的区域估产精度，以陕西省关中平原为研究区域，将遥感反演的VTCI与CERES-Wheat小麦生长模型模拟的土壤浅层含水率相结合，通过四维变分（4D-VAR）同化算法实现2008—2014年冬小麦主要生育期旬尺度VTCI...
本文针对金融资产收益展现出“有偏”及“厚尾”分布特征，引入有偏广义误差分布（SGED）来描述资产收益，继而提出SV-SGED模型对资产收益波动率建模，并以此来测度动态风险值（VaR），进而采用后验测试技术对风险测度模型的精确性进行检验。同时，为了估计SV模型的参数，提出基于有效重要性抽样（EIS）技巧的极大似然（ML）估计方法。最后，给出了基于上证综合指数的实证研究。结果表明，SV-SGED模型比...
VAR熔炼TiAl铸锭的成分分布及显微偏析
TiAl 偏析 VAR 凝固组织
2014/4/4
采用XRD、SEM和化学成分分析等方法,分析了VAR二次熔炼获得的Ti-46Al-2Cr-2Nb铸锭的成分分布、微观组织及显微偏析,研究了其形成的规律。结果表明,沿铸锭径向,Al元素在R/2处质量分数最高,边缘及中心质量分数较低,Cr元素由边缘向中心质量分数逐渐增多,Nb元素从铸锭边缘到中心质量分数逐渐减少；沿铸锭轴向,Al元素自底部到顶部质量分数逐渐降低,Cr元素分布遵循正偏析元素规律,Nb元素...
基于 ＷＲＦ－ＶＡＲ的卫星资料同化分析检验试验
同化 ＷＲＦ 模拟分析
2013/1/17
利用 ＹＨＧＳＭ０．２５°×０．２５°高分辨数值产品作为背景场资料，使用 ＷＲＦ模式与 ＷＲＦ－ＶＡＲ同化系统对中国区域进行连续一个月（２００９年 ７月 １～３１日）的模拟试验，试验分为 ３组：（１）不同化任何资料，（２）同化常规资料，（３）同化 ＡＴＯＶＳ卫星资料；对 ３组试验进行了形势场检验和 ＴＳ评分。结果表明，第（２）、（３）组试验与第（１）组试验相比，中高层位势高度场与温度场的平均误差随...
Control of Diamondback Moth (Plutella xylostella) on Cabbage (Brassica oleracea var capitata) using Intercropping with Non-Host Crops
Diamondback Moth Cabbage Intercropping Non-Host Crops
2010/11/8
This study was conducted to evaluate the effectiveness of intercropping cabbage with non-host crops in reducing the effect of the diamondback moth pest on cabbage. The experimental design used was a r...
Control of Diamondback Moth (Plutella xylostella) on Cabbage (Brassica oleracea var capitata) using Intercropping with Non-Host Crops
Diamondback Moth Cabbage
2016/5/31
This study was conducted to evaluate the effectiveness of intercropping cabbage with non-host crops in reducing the effect of the diamondback moth pest on cabbage. The experimental design used was a r...
Effect of Maturity and Geographical Region on Anthocyanin Content of Sour Cherries (Prunus cerasus var. marasca)
sour cherry Marasca variety anthocyanins colour ripening
2010/8/11
The influence of different stages of maturity on the anthocyanin content and colour parameters in three sour cherry Marasca ecotypes grown in two Dalmatian geographical regions has been studied. Antho...
Evaluation of Image Analysis to Determine the N-Fertilizer Demand of Broccoli Plants（Brassica oleracea convar. botrytis var. italica）
Image Analysis N-Fertilizer Broccoli Plants
2009/5/19
Numerous models have been developed for calculating optimum decision rules for nitrogen fertilization based on remote sensing techniques. New technologies related to digital image analysis may provide...
Effects of Head Density of Cabbages（Brassica oleracea var.Capitata）on Mechanical Properties
mechanical properties whole cabbage cabbage leaf head density
2010/2/3
The mechanical properties of cabbages (var. Yumebutai) with different head densities were evaluated by stress relaxation and a puncture test of whole cabbages, and also by a tensile test of strap-shap...
Genetic Variation in the Age of Transition from Juvenile to Mature Wood in Hybrid Larch（Larix gmelinii var. japonica × L. kaempferi）F1
hybrid larch age of transition juvenile wood genetic variation tracheid length
2009/3/6
The genetic variation of the age of transition from juvenile to mature wood, based on tracheid length, in hybrid larch (Larix gmelinii var. japonica × L. kaempferi) F1, and the influence of growth ra...
The Nutritive Value of Cucumis melo var. agrestis Scrad (Cucurbitaceae) Seeds and Oil in Nigeria
Seeds Oil in Nigeria
2008/11/26
This study investigated the biochemical properties of the Cucumis melo var. agrestis seed and its oil. Also the effect of fungi on the biochemical properties of artificially infected oil after 14 days...
Modified/Controlled Atmosphere Storage of Minimally Processed Mango Slices (Var. Arka anmol)
Mango Arka anmol modified atmosphere controlled atmosphere minimal processing pre-cut
2008/10/26
Stabilization of mango slices (var. Arka anmol) in pre-cut form was achieved by using additive based minimal processing and modified atmosphere storage. The pre-treatments included use of firming agen...
The Nutritive Value of Cucumis melo var. agrestis Scrad (Cucurbitaceae) Seeds and Oil in Nigeria
agrestis Scrad Seeds and Oil
2016/5/31
This study investigated the biochemical properties of the Cucumis melo var. agrestis seed and its oil. Also the effect of fungi on the biochemical properties of artificially infected oil after 14 days...
Characterization of Starches from Tuber of Pinellia ternata (Thunb.) Breitenbach, Rhizome of Alisma orientale Juzepczuk and Seed of Coix lacryma-jobi Linné var. ma-yuen Stapf
pinellia tuber starch alisma rhizome starch coix seed starch physicochemical property digestibility by amylase
2008/4/20
Various physicochemical properties were investigated to assess the potential of starches from the residual crude drugs after extraction. The powdered crude drugs (C) differed from each other in harves...
MODELLING AND SIMULATION OF STATIC VAR COMPENSATOR (SVC) IN POWER SYSTEM STUDIES BY MATLAB
FACTS SVC Var voltage control
2010/1/11
This paper presents the modelling and simulation of Static Var Compensator
(SVC) in power system studies by MATLAB. In the first step, we have modeled
mathematically with MathCAD how to analyze the ...