Differentiated Paths of Regional Green Development Driven by Industrial Enterprise Innovation

A fundamental shift in the regional development pattern is crucial to achieving a comprehensive green transformation in China.Currently,innovation-driven green development is a significant strategic option for regional development.As the main body of innovation and the basic unit of regional composition,enterprises have a profound impact on the development of regional economy,society,ecology,and other aspects.However,considering China’s vast territory and significant regional differences in natural environment and industrial structure,it’s necessary to further explore the specific impact paths of regional green development driven by enterprise innovation.Therefore,taking industrial enterprises as an example,based on the panel data of 30 provinces in China from 2016 to 2020,this study verifies the impact of industrial enterprise innovation on the regional green development level by constructing a parallel multiple mediating effect model and dividing the economy into eastern,central,and western regions to discuss the specific impact paths.The results show that industrial enterprise innovation has a significant positive effect on regional green development level,via different influencing paths in each region:(1)The eastern region improves the regional green development level by narrowing the urban-rural income gap;(2)The central region improves the regional green development level by reducing resource dependence;and(3)The western region raises the regional green development level by improving the rationalization of industrial structure.

STATUS AND DYNAMIC CHANGE OF REGIONAL MAN- LAND SYSTEM IN VIEW OF MICRO-LEVEL QUANTITATIVE ASPECT -Case Study of Gongyi City of Henan Province

A micro-level analysis on man-land system is important in understanding the content of human geography in rural areas, particularly in the different regions. This paper is based on a survey undertaken in the three villages of Wugou Village, Hutuo Village, and Xiaonan Village of Gongyi City, Henan Province in April 2003. The survey covers three types of economic and social activities from 214 households. Data collected include 120 attributes for each household. By using theories from the relevant disciplines such as geography, mathematics, physics, ecology, and system sciences, this paper develops a framework employing the concept of system entropy in the status function of the man-land system. In this framework, the entropy change is used to show the evolution of the system, and the entropy flow to express the flow among the spatial parts of the system. Following the framework, and using a large set of household data from surveys, the paper makes a quantitative analysis of the village-level man-land system from a micro-perspective. After a theoretical investigation, the corresponding strategies in the paper are then put forward in order to adjust the unbalanced trend of the village man-land system from both perspectives of small-area and individual actors.

Image segmentation by level set evolution with region consistency constraint

Image segmentation is a key and fundamental problem in image processing,computer graphics,and computer vision.Level set based method for image segmentation is used widely for its topology flexibility and proper mathematical formulation.However,poor performance of existing level set models on noisy images and weak boundary limit its application in image segmentation.In this paper,we present a region consistency constraint term to measure the regional consistency on both sides of the boundary,this term defines the boundary of the image within a range,and hence increases the stability of the level set model.The term can make existing level set models significantly improve the efficiency of the algorithms on segmenting images with noise and weak boundary.Furthermore,this constraint term can make edge-based level set model overcome the defect of sensitivity to the initial contour.The experimental results show that our algorithm is efficient for image segmentation and outperform the existing state-of-art methods regarding images with noise and weak boundary.

Residual Levels and New Inputs of Chlorinated POPs in Agricultural Soils from Taihu Lake Region

Selected persistent organochlorine pesticides (OCPs), including 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) and its principal metabolites 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (DDE) and 1,1-dichloro-2,2-bis(p-chlorophenyl)e- thane (DDD), hexachlorocyclohexane (HCH) and its isomers (α-,β-, γ-, and δ-HCH), hexachlorobenzene (HCB), endo- sulfan, dieldrin, and endrin were quantified to determine current levels of organochlorine pesticides, to assess the eco- toxicological potential, and to distinguish previous and current inputs in agricultural soils from the Taihu Lake region. Gas chromatography equipped with a 63Ni electron-capture detector (GC-ECD) system was employed. Thirteen OCPs were detectable in all soil samples, with DDTs being the main residues, and HCHs had the second highest level of OCP residues. Although OCP residual levels were lower than those in 1990s, the residual levels for most of the DDTs and some of HCHs were still higher than the national environmental standards for agricultural soils. The ratios of DDT/DDE and γ-/α-HCH in twelve soils indicated that new inputs could be present in the soils. Thus, efforts should be made to completely ban the production of OCPs and their use in agriculture so as to reduce the threat of OCPs to food quality and human health.

Influence of the Pacific Decadal Oscillation on regional sea level rise in the Pacific Ocean from 1993 to 2012

The rate of regional sea level rise(SLR) provides important information about the impact of human activities on climate change.However,accurate estimation of regional SLR can be severely affected by sea surface height(SSH) change caused by the Pacific Decadal Oscillation(PDO-SSH).Here,the PDOSSH signal is extracted from satellite altimeter data by multi-variable linear regression,and regional SLR in the altimeter era is calculated,before and after removing that signal.The results show that PDO-SSH trends are rising in the western Pacific and falling in the eastern Pacific,with the strongest signal confined to the tropical and North Pacific.Over the past 20 years,the PDO-SSH accounts for about 30%-40%of altimeter-observed SLR in the regions 8°-15°N,130°-160°E and 30°-40°N,170°-220°E.Along the coast of North America,the PDO-SSH signal dramatically offsets the coastal SLR,as the sea level trends change sign from falling to rising.

MULTI-REGION SEGMENTATION OF SAR IMAGE BY A MULTIPHASE LEVEL SET APPROACH

In this letter,a multiphase level set approach unifying region and boundary-based infor-mation for multi-region segmentation of Synthetic Aperture Radar(SAR)image is presented.Anenergy functional that is applicable for SAR image segmentation is defined.It consists of two termsdescribing the local statistic characteristics and the gradient characteristics of SAR image respectively.A multiphase level set model that explicitly describes the different regions in one image is proposed.The purpose of such a multiphase model is not only to simplify the way of denoting multi-region by levelset but also to guarantee the accuracy of segmentation.According to the presented multiphase model,the curve evolution equations with respect to edge curves are deduced.The multi-region segmentationis implemented by the numeric solution of the partial differential equations.The performance of theapproach is verified by both simulation and real SAR images.The experiments show that the proposedalgorithm reduces the speckle effect on segmentation and increases the boundary alignment accuracy,thus correctly divides the multi-region SAR image into different homogenous regions.

Correlation between Geographical Regional Economy and Construction of County-level Vocational Education Centers

In the period of Eleventh Five-Year Plan,the construction of county-level vocational education centers in Shanxi Province made great contribution to local social and economic development. Due to influence of special geography,population environment and regional economic development situation,it forms the pattern of strong in southeast and weak in northwest. Thus,scientific making plan for construction of vocational education centers in northwestern counties( cities) and establishing long-term mechanism for construction of vocational education centers will be helpful for serving regional economic construction.

An Empirical Analysis of Regional Disparity of Financial Exclusion Based on Types and Levels of Financial Institution

We make an empirical analysis of regional characteristics of influence factors of financial exclusion by using the data of types and levels of financial institutions in China from 1998 to 2012. The study shows that the number of financial institutions continues to increase,but with uneven distribution; the density of financial institutions increases steadily and the gap between the eastern regions and the Midwest is huge; the commercial banks of the eastern regions account for the highest proportion but the rate of basic outlets of the commercial bank is low,the rate of basic outlets of the rural institution bank is relatively higher,and the proportion of the Midwest rural banks is high. Even though the financial exclusion eases,large differences still exist in different areas and the situation is rather critical in rural areas,especially the financial exclusion in western rural areas is the worst. The economic development level,area scale,government expenditure,personal savings level,per capita consumption and educational level have different effects on financial exclusion. Accordingly,this paper puts forward the recommendations for coordinating the financial resource from all regions and reducing the regional financial exclusion.

Estimation of the stress levels in the focal region before and after the 2001 M=8.1 Western Kunlun Mountain Pass earth-quake

A method estimating the stress level in the focal region of an earthquake is proposed here. Taking the 2001 M=8.1 Western Kunlun Mountain Pass earthquake as an example, we estimate its stress level in the focal region before and after it by this method. The results show that the stress level in the focal region just prior to the initiation of this event is approximately 6.3-8 MPa, and about 5-6.7 MPa remained in the focal region after its occurrence. The stress in the focal region decreased by roughly twenty percent after this event.

Comparative Study on the Comprehensive Level of Sustainable Development of Minority Regions in China

To keep faster growth and sustainability of economy is one of the arduous tasks for minority regions in China, so it is imperative to study the comprehensive sustainable development level of minority regions. We assessed the sustainable development capability of minority regions by constructing the evaluation index system and using grey comprehensive evaluating method. The results showed that the comprehensive sustainable development level of minority regions in China varies significantly, and countermeasures were put forward.

A Preliminary Study on Traditional Level-trench Method to Prevent Rill Initiation in the Three Gorges Region,China

The level-trench method is a traditional tillage operation to develop a drainage system on slope land in the Three Gorges region.Before crops are planted,farmers prepare the land with level trenches spaced 3-10 m apart,depending on the slope gradient:steeper slopes require shorter distances.Little scientific analysis has been done on the use of traditional level trenches for soil conservation.We conducted a field investigation and simulation experiments,and present a comparison between the spacing of level trenches and the slope length required for rill initiation.The results indicate that the spacing of level trenches in farmland is close to the slope length required for rill initiation in the experimental plots,and regression models of trench spacing with the gradient and the slope length required for rill initiation with the gradient have similar formats;the coefficients of determination (R2) for the two equations are 0.99 and 0.88,respectively.There were some differences between the field survey and experiments,but we conclude that the traditional level-trench method has an important role in preventing rill initiation.

Region Division and Stress Analysis for Plate Roller Leveling Process

The flatness of leveled plate is settled by residual stress. According to stress distribution simulated by FEM software ANSYS/LS-DYNA, the plate can be divided into non-steady region and steady region. The nonsteady region is composed of four zones, two of which are about half of leveling roller pitch at leading and end edges and other two are about 10% of the width at lateral edges. The steady region is the rest part enclosed by the non-steady regions. It is helpful to improve the leveling process by analyzing forming mechanism of each region and selecting suitable processes settings.

Tidal Response Characteristics of the Well Water Level in the Sichuan-Yunnan Region

In this paper,the long time series data of the well water-level data of 12 wells in the Sichuan and Yunnan area is analyzed by the Baytap-G tidal analysis software,and well water level tidal response characteristic parameters( amplitude ratio and phase change)are extracted. We analyzed the features of the shape and stage change,and characteristic parameters of the tidal response of well water level before and after the earthquakes,which can provide a new method and approach to analyzing the response relationships between well water level and earth tide and barometric pressure. The results show that Luguhu Well and 9 other wells are affected by earth tides,and their well water level amplitude ratios and phases are relatively stable; the Nanxi Well and Dayao Well water level changes are affected by the barometric pressure combined with tide force,and their well water level amplitude ratios and phases are more discrete. The water level amplitude ratios and phases of Jiangyou Well,Luguhu Well and Dongchuan Well are significant to large earthquakes,and the relationship between seismic energy density and water level amplitude ratios and phases of M_2 wave of the three wells are presented.

IMPACT OF FUTURE SEA LEVEL RISE ON FLOOD AND WATER LOGGING DISASTERS IN LIXIAHE REGION

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Assimilating the along-track sea level anomaly into the regional ocean modeling system using the ensemble optimal interpolation

The ensemble optimal interpolation （EnOI） is applied to the regional ocean modeling system （ROMS） with the ability to assimilate the along-track sea level anomaly （TSLA）. This system is tested with an eddy-resolving system of the South China Sea （SCS）. Background errors are derived from a running seasonal ensemble to account for the seasonal variability within the SCS. A fifth-order localization function with a 250 km localization radius is chosen to reduce the negative effects of sampling errors. The data assimilation system is tested from January 2004 to December 2006. The results show that the root mean square deviation （RMSD） of the sea level anomaly decreased from 10.57 to 6.70 cm, which represents a 36.6% reduction of error. The data assimilation reduces error for temperature within the upper 800 m and for salinity within the upper 200 m, although error degrades slightly at deeper depths. Surface currents are in better agreement with trajectories of surface drifters after data assimilation. The variance of sea level improves significantly in terms of both the amplitude and position of the strong and weak variance regions after assimilating TSLA. Results with AGE error （AGE） perform better than no AGE error （NoAGE） when considering the improvements of the temperature and the salinity. Furthermore, reasons for the extremely strong variability in the northern SCS in high resolution models are investigated. The results demonstrate that the strong variability of sea level in the high resolution model is caused by an extremely strong Kuroshio intrusion. Therefore, it is demonstrated that it is necessary to assimilate the TSLA in order to better simulate the SCS with high resolution models.

中国水资源综合利用水平的地区差异与动态演进

水资源日益成为制约中国经济高质量发展的重要瓶颈。基于水质水量耦合的视角,利用中国除中国香港、澳门、台湾外的31个省(自治区、直辖市)的省级面板数据对中国水资源综合利用水平进行测度,分析地区差异及来源,并探究其时空演化规律。从区域差异特征看,全国及四大区域水资源综合利用水平呈波动上升趋势,利用水平依次为:东部>中部>东北>西部,总体呈现“自西向东不断先上升后略有下降,自南向北先上升后下降”的分布趋势;从变动情况看,绝对差异呈缩小的趋势,差异主要由地区间差异贡献,贡献率为53.72%;部分西部省区市拉低了整体的水资源综合利用水平;“邻居”水平具有正向的空间溢出效应。研究对促进我国经济社会高质量发展、提升水资源综合利用水平具有重要意义。

地方保护政策对中国新能源汽车市场推广的影响分析

加快建设全国统一大市场对推动中国新能源汽车产业发展具有重要意义,而各地频发的地方保护现象却成为阻碍新能源汽车市场推广的主要因素。以2010—2021年中国28个省(市、区)新能源汽车推广数量的面板数据作为研究样本,分析了地方保护政策对新能源汽车市场规模和市场占比的影响,以及产品市场发育程度在其中的调节和门槛效应。研究结果表明,地方保护政策对新能源汽车市场规模扩大和市场占比提升均有显著的抑制作用,产品市场发育程度在该影响过程中具有调节性作用,地方保护政策对市场规模的作用受到产品市场发育程度单一门槛效应的影响,而对市场占比的作用则受双重门槛效应的影响,呈现出先促进后抑制的倒“U”型特征。进一步研究显示,地方保护政策通过加深能源市场分割阻碍了新能源汽车市场推广。区域异质性表明,东部地区的地方保护政策对新能源汽车市场推广有显著的抑制作用,而中西部地区的保护政策则有助于市场规模的扩大;在有新能源汽车上市企业母公司的地区,地方保护政策的抑制作用更为明显;而在没有此类企业的地区,其抑制作用相对较弱。研究结论为打破中国新能源汽车产业中的地方保护主义、推动产业可持续发展提供了决策参考。

数字金融发展提升“两山”转化水平了吗?——来自西部民族地区的经验证据

在数字经济的大背景下,利用数字金融打破“资源诅咒”效应,提升西部民族地区“两山”转化水平,将“生态高地”转变为“经济高地”,对于实现全体人民共同富裕至关重要。本文利用2011—2020年我国西部民族地区省际面板数据,实证考察了数字金融发展对“两山”转化水平的影响和作用机制。基准回归结果表明,数字金融发展显著提升了我国西部民族地区“两山”转化水平。从分项指标来看,数字金融发展对“金山银山”的提升作用显著大于其对“绿水青山”的影响。异质性分析结果表明,在市场一体化程度更深、人力资本水平更高和资源禀赋更好的地区,数字金融发展对“两山”转化水平的提升作用更明显。机制分析结果表明,数字金融发展可以通过提高技术创新能力和促进产业结构优化升级提升“两山”转化水平。本文的研究为进一步提升我国西部民族地区“两山”转化水平,实现全体人民共同富裕提供了决策参考。

贝叶斯优化模糊聚类地级行政区声环境

声环境功能区划是噪声污染管理的重要手段。当前声环境功能区划研究大多是基于某个特定的地级行政区来进行的,难以反映各地级行政区声环境的异同。该文基于134个地级行政区的人口、面积、各声环境功能区面积和及面积占比,进行地级行政区声环境表征和归一化处理。以轮廓系数作为聚类有效性评价指标,基于贝叶斯优化模糊聚类方法对地级行政区声环境表征进行聚类分析。通过与谱聚类、K-medoids聚类、高斯混合模型聚类的聚类性能对比,验证了该方法的有效性。结果表明,我国地级行政区声环境分为9类,城市规模和用地情况发生显著变化导致其声环境表征和归类发生变化后应重新评估当前噪声污染管理政策,并借鉴同类的地级行政区的噪声污染管理政策做出必要的调整。

基于三重螺旋的中国省域创新水平评价及区域差异性研究

鉴于地理位置、资源禀赋、政策环境等现实差异,中国一直存在区域发展不平衡的问题。文章以三重螺旋理论为基础,首先采用因子分析的方法对中国31个省级行政区(不含港澳台)的区域创新水平进行评价,提炼出对区域创新水平影响最大的三个因素分别为智力引导因子、企业能力因子、交互能力因子;其次再采用K-means聚类分析的方法对中国31个省级行政区(不含港澳台)2018-2022年的三个影响区域创新水平的因素进行分析,根据其发展特点将其分为四类,分别为创新主体交互型、政府引导高校型、企业带动创新型、未来待改进型;最后针对性地提出了相应区域发展的一些引领性建议和可能性举措。