THE BRIEF INTRODUCTION OF CHANGCHUN JINGYUETAN OPEN REMOTE SENSING STUDY AND TEST SITE OF THE CHINESE ACADEMY OF SCIENCES

In 1979, the Changchun Jingyuetan Remote Sensing Study and Test Site (RSSTS)began its work, and it was formally established in 1985. The RSSTS is subordinated the Changchun Branch of Chinese Academy of Sciences and is supported by the Changchun Institute of Geography and Changchun Institute of Optics and Fine Machnics, Chinese Academy of Sciences. It is under the management of the Resource & Environment Bureau of Chinese Academy of Sciences and it is the study base of remote sensing basis and application tests in China. The RSSTS is situated in the Jingyuetan scenic spot of the suburbs of Changchun City, Jilin Province. It is located at 43°40′—43°50′N and 125°18′-125°18′E.

Chair's Introduction to 2009 IEEE Circuits and Systems International Conference on Testing and Diagnosis

Based on the recommendation of ICTD＇09 TPC members, this Special Issue of the Journal of Electronic Science ＆ Technology of China （JESTC） contained 22 high quality papers selected from the Proceedings of 2009 IEEE Circuits and Systems International Conference on Testing and Diagnosis （ICTD ＇09） which is fully sponsored by the IEEE Circuits and Systems Society （CASS）, and is technically co-sponsored by the University of Electronic Science and Technology of China （UESTC）, the Chinese Institute of Electronics （CIE）, the China Instrument ＆ Control Society （CIS）, and organized by UESTC.

Research on the Adaptability of Foreign Introduced New Flue-cured Tobacco Varieties in Heilongjiang Tobacco-growing Area

[Objective] The aim was to select the new flue-cured tobacco varieties suitable for Heilongjiang flue-cured tobacco areas. [Method] A comparative trail of six new flue-cured tobacco varieties, which were introduced from America and Brazil, including PVH2248, PVH2291, PVH2310, PVH2269, NC196, and PVH2254, were identified, using NC89 as control. [Result] PVH2310 had good botanical char- acters and agronomic traits; the time from transplanting to budding was 56.00 d, and from budding to center flower blooming was 64.33 d, and the growth period in field is 119.00 d; TMV and PVY did not occur in the year of these two diseases occurring widely; its yield was 3 536.55 kg/hm2; its output value was 44 792.25 CNY/hm2; its average price was 12.68 CNY/kg; its proportion of the superior tobac- co was 19.61%; its appearance quality of raw tobacco was good and equal to NC89 in control group; its tobacco leaf＇s main chemical components content was suitable and internal chemical components were coordinated. [Conclusion] PVH2310 and PVH2269 both performed excellently in terms of comprehensive characteristics, which should be further demonstrated in Heilongjiang flue-cured tobacco areas.

Front-end readout electronics system of ProtoDUNE-SP LAr TPC

Purpose As a prototype of Deep Underground Neutrino Experiment far detector,ProtoDUNE single-phase Liquid Argon(LAr)Time Projection Chamber(TPC)sits in H4 beam line at CERN to characterize detector response.It consists of 6 full-size Anode Plane Assemblies(APAs)plus 18 Cathode Plane Assembly(CPA)modules to form two 3.6-m drift regions with a total of 15,360 readout channels.To achieve a good signal-to-noise ratio with this noble liquid detector(770ton LAr),cold electronics developed at BNL for extremely low temperature(77K–89K)operation is an optimal solution,which decouples the electrode and cryostat design from the readout design.Methods With CMOS front end ASICs integrated with the TPC electrodes,the electronic noise is independent of the fiducial volume and much lower than with readout electronics at room temperature.In addition,signal digitization and multiplexing to high-speed links inside the cryostat result in large reduction in the quantity of cables and the number of cryostat penetrations,giving the designers of both the TPC and the cryostat the freedom to choose the optimum configurations.Results and conclusions By April 2018,we have successfully instrumented 6 APAs with cold electronics,and the results of the integration test before the final installation in the cryostat look very promising.