摘要：Learning a mapping between an input space and an *** from training data canbe viewed as a problem of function approximation,which means that different criteria result in learningapproaches of different *** them,projection criterion proposed by one of the authors aimsdirectly at optimal *** projection idea leads to three specific learning approaches,projection learning,partial projection learning,and averaged projection learning,and a framework of afamily of projection learning called S-L projection learning is established to discuss infinite kinds oflearning.S-L projection learning has a different form from the three methods,and it is not easy to analyzetheir *** paper focuses on an equivalent form of S-L projection learning,which shows thatit is a transformed version of partial projection learning.

摘要：The high-current superconducting proton linac is being studied for the accelerator-driven system （ADS） project undertaken by the Chinese Academy of sciences. The injector II will be operated at 162.5 MHz, and the proton out from the RFQ with an energy of 2.5 MeV will .be accelerated to 10 MeV by two cryo-modules, which are composed of eight superconducting half wave resonance cavities and nine solenoids. In this paper, the design and beam simulation of the superconducting section of the injector Ⅱ, the acceptance calculation and a stability analysis are presented.

摘要：Development of effective chromatographic or electrophoretic separation involves judicious deciding of selection of optimal experimental conditions that can provide an adequate resolution at a reasonable run time for the separation of interested components. Box-Behnken factorial design was effectively applied for the separation optimization of eight structurally related sulfonamides using capillary zone electrophorosis and reverse high performance liquid chromatography. Optimum values for volume ratio of THF to H2O in eluent, column temperature and flow rate of eluent are found as 12 to 88, 35℃ and 1.0 mL/min, respectively. Box-Behnken modified optimization model is extended to separation by capillary electrophoresis (CE). While using CE, a satisfactory separation is achieved with a minimum resolution larger than 1.0 for a separation time less than 10 min.

摘要：An efficient critical control system design is proposed in this paper. The key idea is to decompose the design problem into two simpler design steps by the technique used in the classical loop transfer recovery method （LTR）. The disturbance cancellation integral controller is used as a basic controller. Since the standard loop transfer recovery method cannot be applied to the disturbance cancellation controller, the nonstandard version recently found is used for the decomposition. Exogenous inputs with constraints both on the amplitude and rate of change are considered. The majorant approach is taken to obtain the analytical sufficient matching conditions. A numerical design example is presented to illustrate the effiectiveness of the proposed design.

摘要：There is a comm on sense view for atomic magnetometers that their spin-projection-noises(SPNs) are inversely proportional to (T_2)^(1/2), where (T_2)^(1/2) is the transverse relaxation time. We analyze the current atomic magnetometer types and give a counter-example of this common sense, which is the all-optical spin precession modulated threeaxis atomic magnetometer proposed by our group in 2015. Unlike the other atomic magnetometers, the SPN of this kind of atomic magnetometers is proportional to (T_2)^(1/2) due to the fact that the scale factor between P_x and B can be unrelated to the transverse relaxation time T_2. We demonstrate this irrelevance experimentally and analyze the SPN theoretically. Using short-pulse ultra-high power laser to fully polarize the atoms, the phenomenon that SPN decreases with T_2 may also be demonstrated experimentally and a new tool for researching SPN in atomic magnetometers may be realized.

摘要：A linear accelerator as a new injector for the SSC （Separated Sector Cyclotron） of the HIRFL （Heavy Ion Research Facility Lanzhou） is being designed. The DTL （Drift-Tube-Linac） has been designed to accelerate ^238U^34＋ from 0.140 MeV/u to 0.97 MeV/u. To the first accelerating tank which accelerates ^238U^34＋ to 0.54 MeV/u, the approach of Alternating-Phase-Focusing （APF） is applied. The phase array is obtained by coupling optimization software Dakota and beam optics code LINREV. With the hybrid of Multi- objective Genetic Algorithm （MOGA） and a pattern search method, an optimum array of asynchronous phases is determined. The final growth, both transversely and longitudinally, can meet the design requirements. In this paper, the deign optimization of the APF DTL is presented.

摘要：We design a novel X-ray image detector by lens coupling a Gd2O2S：Tb intensifying screen with a high performance low-light-level （L^3, which often means luminescence less than 10^-3 Lux） image intensifier. Different coupling effects on imaging performance between zoom lens and fix-focus lens are analyzed theoretically. In experiment, for designing a detector of 15-inch visual field, the system coupled by zoom lens is of 12.25-lp/cm resolution, while the one with fix-focus lens is 10 lp/cm. The superiority of zoom lens is validated. It is concluded that zoom lens preserves the image information better than fix-focus lens and improves the imaging system＇s performance in this design, which is referential to the design of other optical imaging systems.

摘要：在超低场磁共振成像设备中,铁磁材料(抗涡流板、铁轭等)会对成像目标区域梯度磁场产生影响,并且在梯度线圈,特别是Z方向线圈工作时,这些金属部件中感应的涡流会导致成像伪影。为解决上述问题,该文提出一种针对永磁型超低场磁共振设备的平面抗涡流Z梯度线圈设计方法。首先,对线圈外侧的铁磁材料进行等效简化,将高磁导率的复杂抗涡流板结构(硅钢片压叠而成)简化为均质磁性板结构以减少计算复杂度。然后,提出一种梯度线圈的参数化设计方法,通过对线圈结构进行参数化表达,直接对Z方向梯度线圈的最终绕线结构进行多目标快速优化,同时在线圈外侧设置反向电流绕线控制系统涡流效应。在保证线圈效率(200μT/(m·A))、最大非线性度(小于5%)的前提下,线圈外侧目标平面最大杂散磁场降低了52%。最后,通过有限元仿真与实验验证了模型简化的准确性与所设计Z梯度线圈的抗涡流性能。

摘要：Mini turbo-pumps having a diameter smaller than 100mm are employed in many fields;automobile radiator pump,ventricular assist pump,cooling pump for electric devices,washing machine pump and so ***,the needs for mini turbo-pumps would become larger with the increase of the application of it for electrical *** is desirable that the mini turbo-pump design is as simple as possible due to restriction to make precise *** the design method for the mini turbo-pump is not established because the internal flow condition for these small-sized fluid machineries is not clarified and conventional theory is not conductive for small-sized *** types of rotors with different outlet angles are prepared for an experiment and a numerical *** performance tests are conducted with these rotors in order to investigate the effect of the blade outlet angle on performance and internal flow condition of mini *** is clarified from the experimental results that head of the mini turbo-pump increases and maximum efficiency flow rate shifts to larger flow rate according to the increase of the blade outlet angle,however the maximum efficiency decreases with the increase of *** the present paper,the performance of the mini turbo-pump is shown and the internal flow conditions are clarified with the results of the experiment and the numerical flow ***,the effects of the blade outlet angle on the performance are investigated and high performance design with simple structure for the mini turbo-pump would be considered.

摘要：Concern about global warming calls for an advanced approach for designing an energy system to reduce carbon emissions as well as to secure energy security for each *** energy systems tend to introduce different technologies with high conversion efficiency,leading to a higher average *** energy systems can be achieved not by an aggregate form of conversion technologies but by an innovative system design *** concept of LCS(low carbon society) is a unique approach having multi-dimensional considerations such as social,economic and environmental *** LCS aims at an extensive restructuring of worldwide energy supply/demand network system by not only replacing the conventional parts with the new ones,but also integrating all the necessary components and designing absolutely different energy *** a core tool for the LCS design,energy-economic models are applied to show feasible solutions in future with alternatives such as renewable resources,combined heat and power,and smart grid *** can introduce changes in energy markets,technology learning in capacity,and penetration of innovative technologies,leading to an optimum system configuration under priority *** paper describes recent trials of energy models application related to waste-to-energy,clean coal,transportation and rural *** the modelling approach is still under investigation,the output clearly shows possible options having variety of technologies and linkages between supply and demand *** of the LCS means an energy systems design with the modelling approach,which gives solution for complex systems,choices among technologies,technology feasibility,R&D targets,and what we need to start.