Data analysis of blocked road information based on GIS

The objective of this study was to assess the distribution of Chlamydia trachomatis (C. trachomatis) genovars in male sexually transmitted disease (STD) clinic patients from 1 province in eastern China...

Analyzing GIS technologies` products for strengthening the tourist attractiveness of the destination and research of possibilities of GIS-technologies at the formation of a tourist product is the purpose of this work. The relevance of this study lies in the need to apply innovative approaches to GIS technologies` usages in the development of national tourism products. The research methodology is based on the application of the statistical method of data processing, the cartographic method of research with the use of GIS, and the method of spatial analysis. General scientific, systematic and informational approaches are also used. The results of the study are an analysis of existing products of GIS technologies and the state of their implementation in tourism, the study of interactive maps and geoportals as tools for the successful solution of problems in the modern tourism sector. It has been found that geoportals significantly help to form a national infrastructure of geospatial data. In the publication I consider two levels of GIS implementation: national and regional. I gave vivid examples of newly created national geoportals and tourist geoportals of the regions of Ukraine, interactive maps of amateur tourists. I considered in more detail the development of GIS technologies` products of such a tourist destination as the Chernihiv region. In particular, as an example, an overview of one of the most functional in Ukraine geoportals - The Geoportal of the urban cadastre of the Chernihiv region is given. A thematic tour of the Chernihiv region was projected with the help of GIS. The scientific novelty of this study is identifying the features of the use of cartographic research methods, especially GIS technologies to study the tourist resources of the territory, the creation of new regional tourism products. I propose to use the method of spatial analysis in the creation of the thematic tour. The practical significance lies in the use of GIS technology products to create cartographic products, such as maps, series of maps, atlases, 3D models, virtual tours. Its help to study in detail the tourist objects of the region contribute to management decisions, and further development and promotion of tourism. The database created during the study can be used to form other types of tourism products. The proposed method of using spatial analysis in the creating of the tour can be useful for expanding the GIS technologies` field of usage.

In July 2013, six H11N3 subtype avian influenza viruses (AIVs) were isolated from domestic ducks in Zhejiang Province in Eastern China. These strains were characterized by whole genome sequencing with subsequent phylogenetic analysis and genetic comparison. Phylogenetic analysis of all eight viral genes showed that these strains clustered in the AIV Eurasian lineage, and these strains received their genes from H11, H7, and H1 AIVs in Eastern China. These strains were found to be minimally pathogenic in mice, and were able to replicate in mice without prior adaptation. Continued surveillance is needed considering the important role of domestic ducks in AIV reassortment.

We aimed to identify multiple nutritional health problems and the relevant factors among children and adolescents aged 7–17 years. This study was part of the China Nutrition and Health Surveillance of Children and Lactating Mothers in 2016–2017, conducted in Jiangsu Province in eastern China. After sampling, 3025 school-age children and adolescents were enrolled into this study. Demographic information collections and anthropometric measurements were conducted by trained local Center for Disease Control and Prevention (CDC) staff. Venous blood in the amount of 6 mL was drawn from each participant in the morning and used for testing biochemical and nutritional indicators. Multivariate logistic regression analysis and Poisson regression analysis were used for overnutrition- and undernutrition-related disorders to test relevant personal, parental, and household factors. The prevalence of wasting, overweight, and obesity was 5.5%, 14.8%, and 12.7%, respectively. Metabolic syndrome (MetS) was prevalent among 5.1% of participants. Among the study participants, 29.5% had hyperuricemia. The overall prevalence of high low-density lipoprotein (LDL) and high total cholesterol (TC) of all participants was 4.8% and 7.4%, respectively. 0.9% of the participants had vitamin A deficiency (VAD) and 14.6% had marginal vitamin A deficiency; 25.1% had vitamin D deficiency (VDD) and 54.5% had inadequate vitamin D levels. Anemia was present in 4.0% of all participants. The prevalence of zinc deficiency was 4.8%. Demographic characteristics, behavioral characteristics, parents’ characteristics, and family characteristics were associated with these multiple malnutrition disorders. The double burdens of malnutrition, which includes overnutrition- and undernutrition-related diseases, were prevalent among the school-age children and adolescents in Jiangsu Province in eastern China. There were various factors related to different nutritional problems. Thus, health education focusing on behavior intervention and nutrition education are necessary in containing nutritional problems among children.

The East Asian monsoon (EAM) and the El Nino Southern Oscillation (ENSO) determine climate variability over much of East Asia, affecting vulnerable grain markets and food security in China. In this study, we investigated the variability of climate and of agricultural production in China in association with the East Asian summer monsoon (EASM) and ENSO. Data from China showed that a strong EASM decreased fall temperature in Gansu and Sichuan Provinces in western China, as well as winter temperature in Heilongjiang Province in NE China and in Shandong and Anhui Provinces in eastern China. Summer rainfall in Hunan Province in southern China increased in weak EASM years. Summer temperature increased in Heilongjiang in NE China and Gansu Province in NW China during the La Nina phase. Summer rainfall decreased in Gansu Province in NW China during the El Nino phase. Among staple crops in China (rice, wheat, maize), maize production was very vulnerable to a strong EASM and El Nino phase. In Henan Province in central China, seasonal climate variability associated with EASM and ENSO resulted in about 14.4 and 15.6%, respectively, of maize yield variability. Maize yield at the national scale decreased significantly by 5.2% during the El Nino phase. Cropland area affected and damaged by floods in Hunan Province in southern China increased significantly by 11.3 and 8.5%, respectively, in weak monsoon years. During the La Nina phase, total crop planting area increased significantly in Shandong, Henan and Anhui Provinces in central China, and in Heilongjiang Province in NE China; however, it decreased significantly in Sichuan Province in SW China. The large variability in seasonal climate and agricultural production in association with EASM and ENSO warrant applying EASM and ENSO information to agricultural and food market management.

Introduction: The manufacturing industry is an important component of urban economy, and its spatial configuration profoundly influences its urban planning, infrastructure development, resource allocation, and sustainable development. A scientific industrial layout can effectively promote the growth, transformation, and upgrading of regional economies. Objectives: Based on data for manufacturing enterprises in Fujian Province spanning 2009–2021, this study explores the spatial distribution patterns of general and innovative manufacturing enterprises at different scales and the factors affecting their spatial distribution. Methods: we conduct spatial statistical analysis using standard deviation ellipse, spatial autocorrelation, kernel density, and negative binomial regression. Results: 1) The spatial distribution of manufacturing enterprises is uneven, mainly distributed along coastal urban belt centered on Ningde, Fuzhou, Quanzhou, Xiamen, and Zhangzhou. General manufacturing has been centered on Quanzhou–Xiamen, while innovative manufacturing centers have shifted from Xiamen to Quanzhou. 2) There are significant spatial agglomeration characteristics, forming two core hotspot areas of Xiamen–Zhangzhou–Quanzhou and Fuzhou. However, innovative manufacturing enterprises exhibit stronger polarization and diffusion phenomena. 3) The spatial pattern evolves from a “point-axis” pattern to a “point-cluster belt” pattern, with stronger spillover effects observed for innovative manufacturing enterprises. 4) The factors affecting the spatial pattern of manufacturing enterprises in Fujian Province show significant changes. Among them, regional distance to ports, industrialization level, financial support strength, transportation accessibility, and population size have significant effects. But the coefficient of distance to ports decreases sharply, external development level changes from having a significant positive effect to not have an effect. Furthermore, patent R&D and the number of economic development zones have more significant effects on innovative manufacturing enterprises. Conclusions: Compared to other coastal provinces in eastern China, Fujian Province's manufacturing industry is more concentrated in coastal areas, and with the industrial transformation and upgrading, the demand for high-quality workers is increasingly strong. Fujian Province should further integrate into the global industrial chain, strengthen industrial clusters, accelerate the cultivation of high-quality talents, thereby promoting high-quality development of the manufacturing industry.

Environmental problems associated with the inappropriate use of fertilizers by rural smallholders are a growing concern in many countries. This paper contributes to the literature by examining whether risk preferences, time preferences, and personality traits are related to farmers’ use of synthetic and organic fertilizers. We rely on survey data collected from 815 farm households in three rice-producing provinces in eastern China in the empirical analyses. Results of OLS and rare events logistic regressions indicate that risk-seeking and patience are positively associated with the application of organic fertilizer in rice production but not with the intensity of synthetic fertilizer use. There is also no significant association between personality traits and (synthetic or organic) fertilizer use. In addition, personality traits do not mediate nor moderate the associations between economic preferences and fertilizer use. Robustness analysis using the two-stage probit least squares (2SPLS) model not only supports these findings, but also suggests that organic fertilizers complement the use of synthetic fertilizers and are only sporadically used in Chinese rice production. The insights gained in this study can provide important inputs for designing policies aimed at promoting sustainable agricultural intensification in China and elsewhere.

PDF HTML阅读 XML下载 导出引用 引用提醒 基于DNA宏条形码技术的蓝彩带蜂粉源植物多样性研究 DOI: 10.5846/stxb202108102204 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 科技部科技基础资源调查专项（2018FY100405）；国家自然科学基金（31970484）；重庆市科技兴林项目（渝林科研2020-5） Analysis of species and diversities in the pollen plants of Nomia chalybeata (Hymenoptera: Halictidae) using DNA metabarcoding technique Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:蓝彩带蜂（Nomia chalybeate Smith，1875）隶属隧蜂科彩带蜂属，是一种典型的广访花性野生蜜蜂，广泛分布于我国东部地区及日本、韩国、印度、缅甸等国家。本研究基于我国东部9个省份18个不同样地20份蓝彩带蜂蜂粮样本，包括安徽省（AHGZ、AHJZ）、重庆市（CQSMS、CQWS）、福建省（FJSM）、广西省（GXHP、GXLZ）、湖南省（HNHY、HNQY）、海南省（HNLS、HNWC）、江西省（JXGX、JXJG6、JXJG8、JXQY6、JXQY8、JXYZ）、山东省（SDLL）、浙江省（ZJCS）。利用DNA宏条形码研究该蜂粉源植物的多样性，为全面掌握该蜂的粉源植物及保护策略提供理论依据。结果表明该蜂粉源植物共涉及47科，99属，124种，其中黄荆（Vitex negundo）是最优势种、其次是罗伞树（Ardisia quinquegona）和山莓（Rubus corchorifolius）。Alpha多样性指数分析显示：SDLL样本的物种丰富度和多样性最高，FJSM样本的丰富度和多样性最低。不同样地的粉源植物多样性具有差异，但该蜂同一样地不同时期的粉源植物多样性及结构无显著差异，主要粉源植物无变化，表明在同一样地该蜂成虫活动期主要粉源植物的变化不大。 Abstract:Nomia chalybeata is a typical polylectic bee species, belonging to the genus Nomia of the family Halictidae. It is widely distributed in eastern China, Japan, South Korea, India, Myanmar, and other countries. In this study, 20 bee bread samples of N. chalybeata were collected from 18 different places in 9 provinces in eastern China, including Anhui Province (AHGZ, AHJZ), Chongqing City (CQSMS, CQWS), Fujian Province (FJSM), Guangxi Province(GXHP, GXLZ), Hunan Province (HNHY, HNQY), Hainan Province(HNLS, HNWC), Jiangxi Province (JXGX, JXJG6, JXJG8, JXQY6, JXQY8, JXYZ), Shandong Province (SDLL), Zhejiang Province (ZJCS). We studied the diversity in the pollen plants of N. chalybeata based on a DNA metabarcoding, so as to provided theoretical basis for comprehensive understanding the pollen plants and protection strategies. The results showed that there were 47 families, 99 genera and 124 species. Vitex negundo was the most dominant species, followed by Ardisia quinquegona and Rubus corchorifolius. According to the indices of alpha diversity, the species richness and diversity of the sample SDLL were the highest, the sample FJSM were the lowest. The diversity of different sample plot were different. In addition, there was no significant difference in the diversity and structure of pollen plants at different time periods in the same area, and there was no change in the main pollen plants, indicating that the main pollen plants during the adult active period did not change much in the same area. 参考文献 相似文献 引证文献

Analysis of an extremely dense regional fog event in Eastern China using a mesoscale model

Recently, the necessity of new methods of spatial data integration and analysis in CRM has been increased since it is acknowledged that about eighty percent of all data stored in corporate databases has a spatial component. But conventional CRM systems are either incapable of managing spatial data or are not user-friendly when doing so. This paper has designed and implemented spatially-enabled integration management system that can manage consistently both enterprise and spatial data through a legacy CRM system and object-oriented database and additionally support spatial analysis and map visualization for a gCRM. Through implementation, it is demonstrated that the proposed system can facilitate effectively spatial data management and analysis in a legacy CRM system.

Analysis of energy efficiency in China's transportation sector

From 2013 to 2015, 32 H1-subtype avian influenza viruses (AIVs), H1N2 (n=12), H1N3 (n=14), H1N4 (n=4) and H1N9 (n=2), were isolated from poultry in Zhejiang Province in eastern China. These strains were characterized by whole-genome sequencing with subsequent phylogenetic analysis and genetic comparison. Phylogenetic analysis of all eight viral genes showed that these strains clustered in the AIV Eurasian lineage. These strains were found to be minimally pathogenic in mice and were able to replicate in mice without prior adaptation. Continued surveillance is needed, considering the important role of poultry in AIV reassortment.

This paper uses correlation of business cycles to gauge the degree of economic integration of the Chinese provinces. The more integrated the provincial economies are, the stronger their correlations should be. Only the correlations between some provinces in eastern China are found to be consistently strong, suggesting that an integrated national economy is yet to be shaped Secondly, the results imply that treating China as a single entity could be misleading, even at the macro level, especially in understanding China's business cycles.

This study aimed to explore the phylogenetic and molecular characteristics of feline astrovirus. A total of 33 fecal samples of domestic cats with or without diarrhea were collected from the Anhui province, and two positive samples were detected. The complete genome and ORF2 of the two strains were sequenced and phylogenetically analyzed. AH-1-2020 and AH-2-2020 displayed 83.4% homology, and their homologies with other reference strains were 75.3%-83.4% and 83.4%-95.0%, respectively. Phylogenetic tree analysis revealed that all strains could be classified into three different clusters; therefore, the mean amino acid genetic distances (p-dist) among the three clusters were estimated. The results suggested that the two strains and other FeAstV strains were grouped into three genotypes, with AH-1-2020 belonging to a novel genotype. High similarity was observed (65.9%-66.5% nucleotide identity and 63.8%-64.8% amino acid identity) in ORF2 between porcine astrovirus type 1 and AH-1-2020. Furthermore, inter-specific recombination between porcine astrovirus type 1 and FeAstV was observed. We, therefore, inferred that inter-specific transmission may exist between pigs and cats; however, further studies are required to verify this. This is the first report on the genetic characterization and phylogenetic analysis of FeAstVs in the Anhui province and would further the current understanding of the genetic diversity and epidemiology of FeAstVs.

The ancestry composition and Sinicisation process of the descendants of the immigrants of Hu people living in ancient China are largely unknown due to the lack of genetic evidence. Tang Dynasty people in Fudamen cemetery (傅大门) excavated from Shandong province in eastern China are believed to be related to the descendants of Hu people, as some of the individuals with the surnames An (安). The genetic origin of the Fudamen population requires genetic clarification using ancient DNA data. Here we successfully obtain genome-wide SNP data for 17 Tang dynasty individuals from Fudamen cemetery. Based on autosomal data, although all Fudamen individuals show high levels of middle reaches of Yellow River-related ancestry as previously published historical period Shandong populations, 2 Fudamen individuals require ~5% Western Eurasian/Central Asian-related ancestry to describe their ancestry composition best. To the best of our knowledge, it is the first evidence of such ancestry in Shandong, the eastern part of today’s China. Moreover, the admixture pattern is also reflected by the presence of both west and east Eurasian-specific mtDNA and Y chromosomal haplogroups in Fudamen people. The estimated admixture time is also consistent with periods when Sogdians and other non-Han populations were active in ancient China. These genomic findings suggest that intermarriage with Han Chinese involved the Sinicization process of the Hu people.