Regional Equity and Influencing Factor of Social Assistance in China

Social assistance is the last safety net in the social security system and plays a vital role in poverty alleviation in countries around the world. Promoting the equal financial assistance is meaningful to achieve equalization of social assistance. Based on the provincial panel data from 2002 to 2017, this paper analyzes the dynamic characteristics and main influencing factors of the equity of social assistance in China, using the Theil index and geographically weighted regression(GWR) model. Th...     

Inversion of sonic waveforms with unknown source and receiver functions

A seismogram that is several times the length of the source-receiver wavelet is windowed into two parts—these may overlap—to obtain two seismograms with approximately the same source function but different Green's functions. A similarly windowed synthetic seismogram gives two corresponding synthetic seismograms. The spectral product of the window 1 data with the window 2 synthetic is equal to the spectral product of the window 1 synthetic with the window 2 data only if the correct earth model is used to compute the synthetic. This partition principle is applied to well-log sonic waveform data from Ocean Drilling Project hole 806B, a slow formation, and used there to estimate Poisson's ratio from a single seismogram whose transmitter and receiver functions are unknown. A multichannel extension of the algorithm gives even better results. The effective borehole radius R _b, was included in the inversion procedure, because of waveform sensitivity to R _b. Inversion results for R _b agreed with the sonic caliper, but not the mechanical caliper; thus if R _b is not included in the inversion its value should be taken from the sonic caliper.     

东海早第三纪玄武岩的发现及其区域地幔地球化学成因意义

本文首次报道东海陆架拗陷带早第三纪玄武岩的发现及邻区有关玄武岩同位素体系分析结果。初步研究表明东海玄武岩为晚渐新世喷发产物,源自与岩石圈有亲缘关系的富集地幔,EMI-LOMU端元在其源区中起主导作用,其深部很可能具古老大陆基底,这一推论为研究华南地区构造演化提供了新的制约。     

木板梳条机的研制

报导自制的用于制作细木制品坯料的自动化专用设备。其特点是生产效率高，加工面质量好。文中给出了该设备的主要结构和应用实例，并对主轴工作时的稳定性进行了分析．     

The circularly propagating pattern of the low-frequencyfluctuations of monthly MSL in the tropical PacificOcean and its correlation with El Nino

The long-term time series analysis of the SST (sea surface temperature) in the Eastern Equatorial Pacific Ocean and the monthly MSL (mean sea level) in the tropical Pacific Ocean is conducted. Their quasiperiodic and low-frequency oscillation features are revealed. The significant periods of low-frequency fluctuations for monthly MSL in the area of 20°N-20° S are between 43. 5 months and 50. 0 months, approximating closely to 47. 6 months which is the significant period of SST in the Eastern Equatorial Pacific Ocean. From the results of space-spectral analysis, the low-frequency fluctations of monthly MSL in the tropical Pacific Ocean appear to have a anticlockwise circularly-propagating pattern, which is, the Eastern Pacific Ocean (off-shore of Mexico) →the area of NEC (North Equatorial Current) →the Western Equatorial Pacific Ocean→the area of NECC (North Equatorial Counter-Current)→the Eastern Equatorial Pacific Ocean. The phases of the pattern correspond to those of El Nino cycle. On the basis     

十万大山北坡气候及开发利用初探

结合防城港市十万大山的地形地貌、植被、动植物资源,通过对十万大山进行气候考察,综合分析了十万大山的气候特点和气候资源,立足于保护气候、环境的长期可循环综合发展理念,提出了甘蔗种植及发展旅游等开发利用十万大山的思路,以供十万大山气候资源开发利用提供参考。     

西宁市地下水环境现状与水源地保护建议

目前西宁市城市供水全部取自湟水流域,近年来,湟水流域受到了多家化工厂和造纸厂的污染。本文依据动态监测资料,在阐述西宁地区地下水环境现状的同时,提出了5条保护水源地建议。     

航磁、重力异常及数据处理成果在清原地区金矿地质研究中的应用

通过航磁、重力异常及数据处理成果的分析和研究，阐述了清原地区深部构造、区域构造、花岗岩体及太古宙变质杂岩的展布特征与金矿成矿之间的关系，指出了该区金矿成矿的远景地段。