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| 1 | A discrete model of stochastic friction system显示文摘 | Feng Qi | | 0,,20: | 1 |
| 2 | Contact dynamics of two floating cable-connected bodies显示文摘 | Qi Feng | 2009 | Ocean Engineering2009,36,: | 1 |
| 3 | Sustainable utilization of water researches in Gansu Province 显示文摘 | Feng Qi | 1999 | Chinese Journal of Arid Land Research1999,11,4: | 1 |
| 4 | A new calculation method for shape coefficient of residential building using Google Earth显示文摘 | Feng Qi Yixiang Wang | 2014 | Energy & Buildings2014,,: | 1 |
| 5 | The extended mean values: definition, properties, monotonicities, comparision, convexities, generalizations, and applications 显示文摘 | Qi Feng | 2003 | Cubo MathEduc2003,5,3: | 1 |
| 6 | Sustainable utilization of water researches in Gansu Province显示文摘 | Feng Qi | 1999 | Chinese Journal of Arid Land Research1999,11,4: | 1 |
| 7 | Sustainable Utilization of Water Researches in Gansu Province显示文摘 | Feng Qi | 1999 | Chinese Journal of Arid Land Research1999,11,4: | 1 |
| 8 | Integrating dynamic pricing and replenishment decision under supply capacity uncertainty 显示文摘 | Qi Feng | 2010 | Management Sci- ence2010,56,12: | 1 |
| 9 | Generalized weighted mean values with two parameters显示文摘 | FENG Qi | 1998 | Proc Royal Soc London Ser A1998,,454: | 1 |
| 10 | On a two-parameter family of nonhomogeneous mean values显示文摘 | FENG Qi | 1998 | Tamkang J of Math1998,29,2: | 1 |
| 11 | Inequalities for a weighted multiple integral显示文摘 | FENG Qi | 2001 | Math Anal Appl2001,,253: | 1 |
| 12 | Solvothermal soft chemical synthesis and characterization of plate-like particles constructed from oriented BaTiO3 nanocrystals 显示文摘 | Qi Feng | 2010 | Journal of the Ceramic Society of Japan2010,118,2: | 1 |
| 13 | Using a SVM to evaluate damage to vibration isolators in an elastic raft system显示文摘Predicting damage to vibration isolators in a raft experiencing heavy shock loadings from explosions is an important task when designing a raft system. It is also vital to be able to research the vulnerability of heavily shocked floating rafts. The conventional approach to prediction has been unreliable,especially when the allowable values or ultimate values of vibration isolators of supposedly uniform standard in a raft actually have differing and uncertain values due to defective workmanship. A new model for predicting damage to vibration isolators in a shocked floating raft system is presented in this paper. It is based on a support vector machine(SVM) ,which uses Artificial Intelligence to characterize complicated nonlinear mapping between the impacting environment and damage to the vibration isolators. The effectiveness of the new method for predicting damage was illustrated by numerical simulations,and shown to be effective when relevant parameters of the model were chosen reasonably. The effect determining parameters,including kernel function and penalty factors,has on prediction results is also discussed. It can be concluded that the SVM will probably become a valid tool to study damage or vulnerability in a shocked raft system. | JIANG Feng FENG Qi | 2007 | Journal of Marine Science and Application2007,6,4: | 0 |
| 14 | Soil water and salt distribution under furrow irrigation of saline water with plastic mulch on ridge显示文摘Furrow irrigation when combined with plastic mulch on ridge is one of the current uppermost water-saving irrigation technologies for arid regions.The present paper studies the dynamics of soil water-salt transportation and its spatial distribution characteristics under irrigation with saline water in a maize field experiment.The mathematical relationships for soil salinity,irrigation amount and water salinity are also established to evaluate the contribution of the irrigation amount and the salinity of saline water to soil salt accumulation.The result showed that irrigation with water of high salinity could effectively increase soil water content,but the increment is limited comparing with the influence from irrigation amount.The soil water content in furrows was higher than that in ridges at the same soil layers,with increments of 12.87% and 13.70% for MMF9(the treatment with the highest water salinity and the largest amount of irrigation water) and MMF1(the treatment with the lowest water salinity and the least amount of irrigation water) on 27 June,respectively.The increment for MMF9 was gradually reduced while that for MMF1 increased along with growth stages,the values for 17 August being 2.40% and 19.92%,respectively.Soil water content in the ridge for MMF9 reduced gradually from the surface layer to deeper layers while the surface soil water content for MMF1 was smaller than the contents below 20 cm at the early growing stage.Soil salinities for the treatments with the same amount of irrigation water but different water salinity increased with the water salinity.When water salinity was 6.04 dS/m,the less water resulted in more salt accumulation in topsoil and less in deep layers.When water salinity was 2.89 dS/m,however,the less water resulted in less salt accumulation in topsoil and salinity remained basically stable in deep layers.The salt accumulation in the ridge surface was much smaller than that in the furrow bottom under this technology,which was quite different from traditional furrow irrigation.The soil salinities for MMF7,MMF8 and MMF9 in the ridge surface were 0.191,0.355 and 0.427 dS/m,respectively,whereas those in the furrow bottom were 0.316,0.521 and 0.631 dS/m,respectively.The result of correlation analysis indicated that compared with irrigation amount,the irrigation water salinity was still the main factor influencing soil salinity in furrow irrigation with plastic mulch on ridge. | LiJuan CHEN Qi FENG | 2013 | Journal of Arid Land2013,5,1: | 7 |
| 15 | Research of niching genetic algorithm for optimization in electro-magnetics显示文摘 | YE Feng QI Weimin XIAO.Jie | | 0,,: | 1 |
| 16 | China-ASEAN Cooperation on Climate Change显示文摘China-ASEAN cooperation on climate change is an important component of the comprehensive strategic cooperation between the two.The cooperation has already made significant progress but the constraining factors still exist.It is in the interests of both sides to further enhance the cooperation in the climate | Zhu Xinguang Qi Feng | 2009 | China International Studies2009,29,3: | 1 |
| 17 | Cultural thoughts in trademark translation显示文摘 | WAN Hua FENG Qi | 2009 | US-China Foreign Language2009,7,12: | 0 |
| 18 | Glycogen synthase kinase-3β positively regulates the proliferation of human ovarian cancer cells显示文摘Although glycogen synthase kinase-3(GSK-3)might act as a tumor suppressor since its inhibition is expected tomimic the activation of Wnt-signaling pathway,GSK-3β may contribute to NF-κ3 activation in cancer cells leading toincreased cancer cell proliferation and survival.Here we report that GSK-3β activity was involved in the proliferationof human ovarian cancer cell both in vitro and in vivo.Inhibition of GSK-3 activity by pharmacological inhibitors sup-pressed proliferation of the ovarian cancer cells.Overexpressing constitutively active form of GSK-3β induced entryinto the S phase,increased cyclin D1 expression and facilitated the proliferation of ovarian cancer cells.Furthermore,GSK-3 inhibition prevented the formation of the tumor in nude mice generated by the inoculation of human ovariancancer cells.Our findings thus suggest that GSK-3β activity is important for the proliferation of ovarian cancer cells,implicating this kinase as a potential therapeutic target in ovarian cancer. | Qi Cao Xin Lu You-Ji Feng | 2006 | Cell Research2006,16,7: | 15 |
| 19 | Weak Poincaré Inequalities,Decay of Markov Semigroups and Concentration of Measures显示文摘For a reasonable class of weak Poincaré inequalities,the decay of the corresponding Markovsemigroups obtained earlier by R ckner and the first named author is improved by removing an extraL^2-norm.Next,a concentration estimate of the reference measure is presented for the weak Poincaréinequality,which is sharp as illustrated by some examples of one-dimensional diffusion processes. | Feng Yu WANG Qi Zhi ZHANG | 2005 | Acta Mathematica Sinica,English Series2005,21,4: | 3 |
| 20 | Modeling Cadmium Transport in Neutral and Alkaline Soil Columns at Various Depths显示文摘Human health has been potentially threatened by cadmium (Cd) contained in sewage irrigation water.Previous studies of Cd transport in soils were mainly conducted using small soil cores with pH values less than 6.The objectives of this study were to determine the parameters of the convection-dispersion equation (CDE) for Cd transport in relatively larger columns with neutral and alkaline soils,and to investigate the parameters' variability with depth.The soil columns were 50 cm in length and 12.5 cm in diameter.Ceramic suction lysimeters were buried at depths of 2.5,7.5,17.5,27.5,and 37.5 cm to abstract soil solution.Cd concentration in the soil solution samples were subsequently analyzed to obtain breakthrough curves (BTCs).Equilibrium and nonequilibrium models in CXTFIT program were used to estimate parameters of the CDE.The results suggested that both equilibrium and non-equilibrium models performed well in modeling Cd transport.The hydrodynamic dispersion coefficient (D) ranged from 0.18 to 10.70 cm 2 h 1,showing large differences among different depths.The retardation factor (R d) ranged from 25.4 to 54.7 and the standard deviation of R d value was lower than 30% of the mean value.Precipitation coefficient (R p) decreased consistently with increasing depth,varying from 1.000 × 10 10 to 0.661 h 1.Sensitivity tests showed that D was less sensitive than R d.These results would be helpful in understanding the transport and retention of Cd in non-acidic soils. | QI Zhi-Ming FENG Shao-Yuan M.J.HELMERS | 2012 | Pedosphere2012,22,3: | 2 |