Entity

Time filter

Source Type

Beijing, China

Van Giai N.,University Paris - Sud | Khan E.,University Paris - Sud | Ma Z.,CIAE
EPJ Web of Conferences | Year: 2012

The microscopic structure of the inner crust of neutron stars is generally studied in the framework of local energy density functionals (EDF). Here, we discuss other possible frameworks, either based on non-relativistic EDF which are fully non-local, or covariant EDF of the relativistic mean field (RMF) type. These other approaches must be more widely used in the context of neutron stars in order to gain confidence in predicting general trends. © Owned by the authors 2012. Source


Bi Y.J.,Tsinghua University | Adelmann A.,PSI | Dolling R.,PSI | Humbel M.,PSI | And 4 more authors.
HB 2010 - 46th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams | Year: 2010

The 1.3 MW of beam power delivered by the PSI 590 MeV Ring Cyclotron together with stringent requirements regarding the controlled and uncontrolled beam losses poses great challenges with respect to predictive simulations. We describe a large scale simulation effort, which leads to a better quantitative understanding of the existing PSI high power proton cyclotron facility. Initial conditions for the PSI Ring simulations are obtained from a new time structure measurements and 18 profile monitors available in the 72 MeV injection line. The radial beam profile measurement which is just located in front of the extraction septum is compared with simulations. We show that OPAL (Object Oriented Parallel Accelerator Library) can precise predict the radial beam pattern at extraction with a large dynamic range of 4 orders of magnitude. A large turn separation and a narrow beam size at the Ring extraction is obtained by adjusting parameters such as the injection position and angle, the flattop phase and the trim coils. A large turn separation and a narrow beam size are the key elements for reducing the beam losses to acceptable levels. The described simulation capabilities are mandatory in the design and operation of the next generation high power proton drivers. Source


Veenadhari S.,MGCGV | Misra B.,MGCGV | Singh C.D.,CIAE
2014 International Conference on Computer Communication and Informatics: Ushering in Technologies of Tomorrow, Today, ICCCI 2014 | Year: 2014

With the impact of climate change in India, majority of the agricultural crops are being badly affected interms of their performance over a period of last two decades. Predicting the crop yield well ahead of its harvest would help the policy makers and farmers for taking appropriate measures for marketing and storage. Such predictions will also help the associated industries for planning the logistics of their business. Several methods of predicting and modeling crop yields have been developed in the past with varying rateof success, as these don't take into account characteristics of the weather, and aremostly empirical. In the present study a software tool named 'Crop Advisor' has been developed as an user friendly web page for predicting the influence of climatic parameters on the crop yields. C4.5 algorithm is used to find out the most influencing climatic parameter on the crop yields of selected crops in selected districts of Madhya Pradesh. This software provides an indication of relative influence of different climatic parameters on the crop yield, other agro-input parameters responsible for crop yield are not considered in this tool, since, application of these input parameters varies with individual fields in space and time. © 2014 IEEE. Source


Singh A.,Indian Institute of Technology Kharagpur | Panda S.N.,Indian Institute of Technology Kharagpur | Saxena C.K.,CIAE | Verma C.L.,CSSRI Regional Research Station | And 3 more authors.
Journal of Irrigation and Drainage Engineering | Year: 2016

The continuous increase in global population and simultaneous decrease in good-quality water resources emphasize the need of conjunctive use of groundwater and surface-water resources for irrigation. The optimal allocation of water resources can be achieved by employing an appropriate optimization technique. This paper presents an overview of the different programming techniques used for the conjunctive use planning and management of irrigated agriculture. Past papers on the applications of different programming techniques for the conjunctive use of different water sources are grouped into four categories: linear programming, nonlinear programming, dynamic programming, and genetic algorithms. Conclusions are provided based on this review, which could be useful for all stakeholders. © 2015 American Society of Civil Engineers. Source


Wang X.,CIAE | Hu Y.,CIAE
IPAC 2011 - 2nd International Particle Accelerator Conference | Year: 2011

After more than 20 year's operation, the radiation protection system of HI-13 Tandem Accelerator laboratory needs to be upgraded in order to provide for higher personnel protection reliability, more convenience of worker's operations and farther display integrity of the working states. This new radiation protection system compose of seven protective doors control units and seven emergency door-open buttons , 23 groups of states indicators, 17 groups of alarms, 17 groups of workshopempty units , L.E Faraday cup and IMAG Faraday cup, as well as computer control and display system based on PLC. Pre-empty section is prerequisite before close the protective doors to ensure nobody be exposed irradiation environment otherwise the door-open would be disabled. Even thought somebody left, pushing nearby alarm button and inner emergency door-open button will induce glittery signal and simultaneous door-opening. L.E Faraday cup and IMAG Faraday cup execute immediate beam interruption once accidence occurred. The enough distributed indicators indicate the real time states of all the work fields. All the above devices and units are interlocked follow some complex but logical protective rules. In addition, computer workstation is built supported by radiation protective programs. Accordingly, after full information and operation action signals are collected and transferred to it, this computer workstation can complete full-sides status monitoring and provide convenient control and display interfaces as well as pop adequate prompt frames. Copyright © 2011 by IPAC'11/EPS-AG. Source

Discover hidden collaborations