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| 1 | Multi-classification of pizza using computer vision and support vector machine显示文摘 | DU CHENGJIN SUN DAWEN | 2008 | Journal of Food Engineering2008，86，2： | 1 |
| 2 | The effects of fertilization on the trait-abundance relationships in a Tibetan alpine meadow community显示文摘Aims Comparisons of the trait-abundance relationships from various habitat types are critical for community ecology,which can offer us insights about the mechanisms underlying the local community assembly,such as the relative role of neutral vs.niche processes in shaping community structure.Here,we explored the responses of trait-abundance relationships to nitrogen(N),phosphorus(P)and potassium(K)fertilization in an alpine meadow.Methods Five fertilization treatments(an unfertilized control and additions of N,P,K and NPK respectively)were implemented using randomized block design in an alpine Tibetan meadow.Species relative abundance(SRA),plant above-ground biomass and species richness were measured in each plot.For 24 common species,we measured species functional traits:saturated height,specific leaf area(SLA)and leaf dry matter content(LDMC)in each treatment but seed size only in the unfertilized control.Standard major axis(SMA)regression and phylogenetically independent contrasts(PICs)analysis were used to analyse species trait-abundance relationships in response to different fertilization treatments.Important Findings Positive correlations between SRA and saturated height were raised following N,P and NPK fertilizations,which indicated an increase in light competition in these plots.In P fertilized plots,SRA was also positively correlated with LDMC because tall grasses with a nutrients conservation strategy often have a relative competitive advantage in capturing limited light and soil nutrients.In K fertilized plots,neither the trait-abundance relationships nor above-ground biomass or species richness significantly differed from that in the control,which suggests that K was not a limiting resource in our study site.These significant correlations between species traits and relative abundance in fertilized treatment suggest that trait-based selection plays an important role in determining species abundance within local communities in alpine meadows. | Xiaolong Zhou Youshi Wang Pengfei Zhang Zhi Guo Chengjin Chu Guozhen Du | 2016 | Journal of Plant Ecology2016，9，2： | 1 |
| 3 | Multi-classification of pizza using computer vision and support vector machine显示文摘 | DU Chengjin SUN Dawen | 2008 | Journal of Food Engineering2008，86，2： | 1 |
| 4 | Prediction of beef eating quality from colour, marbling and wavelet texture features显示文摘 | JACKMAN P SUN Dawen DU Chengjin | 2008 | Meat Science2008，80，7： | 1 |
| 5 | Predietion of beef eating quality from color, marbling and wavelet surface texture features using homogenous carcass treatment显示文摘 | Jackman P Sun Dawen Du Chengjin | 2009 | Pattern Recognition2009，42，5： | 1 |
| 6 | Predic tion of beef eating quality from eolour, marbling and wavelet texture features显示文摘 | Patrick Jackman SUN Dawen DU Chengjin | 2008 | Meat science2008，80，： | 1 |
| 7 | EFFECT OF FEED ARRAY CONFIGURATION ON THE FIELD-OF-VIEW OF RADIO TELESCOPE ANTENNA显示文摘Phased Array Feed (PAF) is a small two-dimensional phased array antenna, playing a role as the multi-beam feed for the reflector antenna. The prominent capability of large continuous Field-of-View (FoV) coverage and fast survey speed makes PAF the promising feed for radio telescopes. In this paper, the effect of feed array of PAF on the gain fluctuations over FoV is analyzed on a sim- plified model of the Five-hundred-meter Spherical Aperture radio Telescope (FAST), including illu- mination pattern edge taper, element spacing, element arrangement and element amount. And the differences between rectangular and hexagonal array arrangements are compared. The relationship between the FoV and array configuration are concluded at last. | Wu Yang Du Biao Liu Xiaomeng Jin Chengjin | 2013 | Journal of Electronics(China)2013，30，4： | 0 |
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