Goals and Key Technology of Fertilizer-pesticide "Double Reduction" and Synergism for Greenhouse Strawberry

In order to develop green good, reduce the use of chemical fertilizer and pesticide, realize ＂double reduction＂ and synergism, improve safety and quality of products, protect the ecological environment and promote the healthy and steady development of strawberry industry, the goals and key technology of fertilizer-pesticide ＂double reduction＂ and synergism for greenhouse strawberry are summed up in this paper targeting at the current situation of strawberry production and combined with the new technology achievements at home and abroad. The key technology includes six items： healthy seedling cultivating technique, soil improvement and continuous cropping obstacle treatment technique, agricultural ecological prevention tech- nique, physicochemical trap of pest control technique, biological control technique and low residual risk chemical control technique.

Application of Improved Z-Buffer Technique to RCS Computation

This paper presents a new method for computation of the monostatic radar cross section (RCS) of electrically large conducting objects. Compared with the traditional Z-buffer technique, the improved one can record not only the illuminated surface of the body, but also the information about the shadowed part. So multi-scattering and RCS of cavity can be calculated. The second advantage of it is using dual representation, of the target's facet surface, in which the illuminated part is treated as bicubic patches for RCS calculation, and is simplified to flat facet when ray tracing is done. Excellent agreement with the experiment has been obtained.

Assessing Air Traffic Management Performance Interdependencies through Bayesian Networks： Preliminary Applications and Results

The performance model proposed by this study represents an innovative approach to deal with performance assessment in ATM （air traffic management）. It is based on Bayesian networks methodology, which presents several advantages but also some drawbacks as highlighted along the paper. We illustrate the main steps required for building the model and present a number of interesting results. The contribution of the paper is two-fold： （1） It presents a new methodological approach to deal with a problem which is of strategic importance for ANSPs （air navigation service providers）; （2） It provides insights on the interdependencies between factors influencing performance. Both results are considered particularly important nowadays, due to the SES （Single European Sky） performance scheme and its related target setting process.

Algorithm of the Real-Time Extraction Image for Vehicle

An algorithm applied to a real-time extraction image of vehicle is introduced. The algorithm include an image processing with a binarzation method, image grab for a vehicle with high speed, character isolator one by one, and neural network algorithm. The techniques include vehicles sensing, image garb control, vehicle license location, lighting and optic character recognition. The system is much more robust and faster than the traditional thresholding method.

Minimum Inductance Optimal Design for the Gradient Coil

In MRI (Magnetic Resonance Imaging), a crucial role of gradient coils is to image organism, meanwhile the inductance of the coils determines the speed of imaging. So it is of great importance to optimize designs of the gradient coils. The target field approach is an effective method to design the gradient coils. Having applied this method and performing many numerical tests, we achieved the designs of thex ?,y ?,z ? in which the inductance and resistance of the coils also meet the requirements.

Discussions of Exploring"41635"Potential of Food for More than 400 Million People through Developing"Fenlong Agriculture"

This paper discussed exploring"41635"potential of food for more than 400 million people through developing"Fenlong Agriculture"in China.It clarified that"5.0 Fenlong Technology"is composed of"drill type Fenlong tillage tools+Fenlong farming technology+Fenlong crop cultivation technology standards",and has coupling and interaction"common key technologies in agricultural production,resource utilization and ecological improvement,and"Great Science"connotation and characteristics,the yield increase rate for 40 kinds of crops in 26 provinces in China reached 10%-150%.China uses"5.0"Fenlong Technology"to develop"Fenlong agriculture"to implement the optimization and transformation of 67 million ha of cultivated land,13 million ha of saline-alkali land,and 67 million ha of degraded grassland and related farming systems,excavating its new round of multiple activations and increasing the huge concentration of"gifted resources"such as soil,water,gas,temperature and light,develop"five systems","big pattern","rainfed and environment-friendly"and other types of Fenlong agriculture,so as to increase food,meat,fish and other food sources to feed 400 million people every year,increase natural soil storage by 100 billion m3,reduce groundwater collection by 60 billion m3,reduce the use of chemical fertilizers and pesticides by more than 30%,the comprehensive benefits including yield increase,quality improvement,water saving,chemical fertilizer reduction,ecological protection,and disaster reduction can increase by more than 50%(these are 41635 potential),to realize the objective that a place can feed its people by its own resources.