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| 1 | 高纬地区电离层扩展F发生时间研究显示文摘利用高纬地区Zhigansk、Yakutsk两个台站的DPS-4电离层测高仪2006年观测到的扩展F(Spread-F,SF)数据统计分析了两台站不同类型SF出现的地方时分布及其季节变化.结果表明:Zhigansk和Yakutsk两个台站观测到的SF主要类型都是频率扩展(Frequency Spread-F,FSF)和混合扩展(Mixed Spread-F,MSF);两台站FSF出现的时间范围具有明显的季节变化,而MSF在各个季节都主要出现在18∶00—06∶00LT.通过分析可以认为这两个高纬度地区FSF的发生主要与电离槽有关,而MSF主要与夜侧磁层粒子沉降有关. | 陶伟 史建魁 王国军 ZHEREBTSOV G POTEKHIN A ROMANOVA E RATOVSKY K STEPANOV A | 2013 | 电波科学学报2013，28，3： | 3 |
| 2 | Function fitting for modeling seasonal normalized difference vegetation index time series and early forecasting of soybean yield显示文摘Forecasting crop yields based on remote sensing data is one of the most important tasks in agriculture.Soybean is the main crop in the Russian Far East.It is desirable to forecast soybean yield as early as possible while maintaining high accuracy.This study aimed to investigate seasonal time series of the normalized difference vegetation index(NDVI) to achieve early forecasting of soybean yield.This research used data from the Moderate Resolution Image Spectroradiometer(MODIS),an arable-land mask obtained from the VEGA-Science web service,and soybean yield data for 2008-2017 for the Jewish Autonomous Region(JAR) districts.Four approximating functions were fitted to model the NDVI time series:Gaussian,double logistic(DL),and quadratic and cubic polynomials.In the period from calendar weeks 22-42(end of May to mid-October),averaged over two districts,the model using the DL function showed the highest accuracy(mean absolute percentage error-4.0%,root mean square error(RMSE)-0.029,P <0.01).The yield forecast accuracy of prediction in the period of weeks 25-30 in JAR municipalities using the parameters of the Gaussian function was higher(P <0.05) than that using the other functions.The mean forecast error for the Gaussian function was 14.9% in week 25(RMSE was0.21 t ha) and 5.1%-12.9% in weeks 26-30(RMSE varied from 0.06 to 0.15 t ha) according to the2013-2017 data.In weeks 31-32,the error was 5.0%-5.4%(RMSE was 0.07 t ha) using the Gaussian parameters and 7.4%-7.7%(RMSE was 0.09-0.11 t ha) for the DL function.When the method was applied to municipal districts of other soy-producing regions of the Russian Far East.RMSE was0.14-0.32 t hain weeks 25-26 and did not exceed 0.20 t hain subsequent weeks. | Alexey Stepanov Konstantin Dubrovin Aleksei Sorokin | 2022 | The Crop Journal2022，10，5： | 2 |
| 3 | Perforator for skin transplants 显示文摘 | Stepanov Iu I | 1980 | Khirurgiia (Mosk)1980，7，： | 1 |
| 4 | Mobile source of high-energy single-cycle terahertz pulses显示文摘 | Stepanov A G Henin S Petit Y | 2010 | Applied Physics B2010，101，1： | 1 |
| 5 | Laser methods and facilities for monitoring the geometric dimensions of components显示文摘 | Demkin V N Stepanov V A | 2008 | Measure-ment Techniques2008，51，2： | 1 |
| 6 | Influence of the incubation temperature,atmosphere and dynamic condition biofilm formation by Salmonella spp显示文摘 | STEPANOVIC S CIRKOVIC I MUAC V | 2003 | Food Microbiol2003，20，3： | 1 |
| 7 | Dependence of the concentration of natural ice-forming nuclei of different size on the temperature and supersaturation显示文摘 | Berezinskiy N A Stepanov G V | 1986 | Izv Atmos Ocean Phy1986，22，4： | 1 |
| 8 | Measurement of surface roughness profile by a triangulation method显示文摘 | Demkin V N Stepanov V A | 2008 | Measurement Techniques2008，51，6： | 1 |
| 9 | Urinary tobacco smokeconstituent biomarkers for assessing risk of lung cancer显示文摘 | Yuan JM Butler LM Stepanov I | 2014 | Cancer Res2014，74，2： | 1 |
| 10 | Interrelationship between structural variants of the apolipoprotein B and ischemic heart disease and plasma lipid levels显示文摘 | Stepanov V A Puzyrev V P Lemza S V | 1995 | Genetika1995，31，3： | 1 |
| 11 | A modified microtiter-platetest for quantification of Staphylococcal biofilm formation显示文摘 | Stepanovic S Vukovic D Dakic I etal | 2000 | J Microbiol Methods2000，40，： | 1 |
| 12 | Magnesium Mechanical Alloys for Hydrogen Storage显示文摘 | IVANOV E KONSTANCHUK I STEPANOV A | 1987 | LessCommon Met1987，131，： | 1 |
| 13 | Electrochemical carboxylation of beta-Cyc|odextr in/1 -( 3-Phenoxyphenyl ) -1-Chlo- roethane inclusion complex on a glassy-carbon cathode in anhydrous dimethylformamide 显示文摘 | Stepanov A A Grachev M K Kurochkina G I | 2008 | Russion Journal of Electrochemistry2008，44，12： | 1 |
| 14 | Path-planning strategies for a point mobile automation moving amidst obstacles of arbitrary shape 显示文摘 | Lumel slky V J Stepanov A A | 1987 | Algorith- mica1987，2，4： | 1 |
| 15 | Innovative nuclear technology based on modular multi-purpose lead–bismuth cooled fast reactors显示文摘 | A.V. Zrodnikov G.I. Toshinsky O.G. Komlev Yu.G. Dragunov V.S. Stepanov N.N. Klimov V.N. Generalov I.I. Kopytov V.N. Krushelnitsky | 2007 | Progress in Nuclear Energy2007，，2： | 1 |
| 16 | Exact distribution and Fisher information of weak record values显示文摘 | Stepanov A V Balakrishnan N | 2003 | Statistics Probability Letters2003，64，： | 1 |
| 17 | Industri- al coking of coal batch without bituminous coal显示文摘 | Shtark P V Stepanov Y V Popova N K | 2008 | Coke & Chemistry2008，51，3： | 1 |
| 18 | Path -planning stralegles for a point mobile automation moving amidst unknown ob- stacles of arbitrary shape 显示文摘 | LUMDSKY V STEPANOV A | 1987 | Algorithmica1987，11，2： | 1 |
| 19 | Production of nanocrystalline RDX by rapid expansion of supercritical solutions显示文摘 | Stepanov V Krasnoperov L N Elkina I B | 2005 | Propellants Explosives Pyrotechnics2005，30，3： | 1 |
| 20 | Effect of crystallization on oxygen-barrier properties of copolyesters based on ethylene terephthalate显示文摘 | POLYAKOVA A STEPANOV E V | 2001 | J Polym Sci: Polym Phys2001，39，： | 1 |
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