首页 > 最新文献

Annals of GIS最新文献

英文 中文
Introduction to advancements of GIS in the new IT era 介绍地理信息系统在新资讯科技时代的发展
IF 5 Q1 GEOGRAPHY Pub Date : 2021-01-02 DOI: 10.1080/19475683.2021.1890920
Weiwei Song, Changshan Wu
{"title":"Introduction to advancements of GIS in the new IT era","authors":"Weiwei Song, Changshan Wu","doi":"10.1080/19475683.2021.1890920","DOIUrl":"https://doi.org/10.1080/19475683.2021.1890920","url":null,"abstract":"","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"122 1","pages":"1 - 4"},"PeriodicalIF":5.0,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87971396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Geospatial analysis of malaria mortality in the kintampo health and demographic surveillance area of central Ghana 加纳中部金坦波卫生和人口监测地区疟疾死亡率的地理空间分析
IF 5 Q1 GEOGRAPHY Pub Date : 2020-12-21 DOI: 10.1080/19475683.2020.1853231
K. Wiru, Felix Boakye Oppong, Stephaney Gyaase, Oscar Agyei, S. Abubakari, S. Amenga‐Etego, Charles Zandoh, Kwaku Poku Asante
ABSTRACT Malaria remains a menace to the existence of humanity in most contexts. Geospatial analysis of malaria mortality is crucial to identifying clusters of high disease burden and areas with limited access to malaria care for targeted control and remedial interventions. This study identified spatial and space-time clusters of malaria mortality in the Kintampo area of central Ghana. We used 1301 malaria deaths archived from 2005 to 2017 and Global Positioning System (GPS) point locations of the sub-districts in which these deaths occurred for our analysis. Mortality risks were smoothed and mapped using the Spatial Empirical Bayesian smoothing technique in Geoda (version 1.12.1.161) whereas spatial and spatio-temporal clustering analysis was done using SaTScan (version 9.6). Malaria mortality risks ranged between 1.2 and 2.4 deaths per 1000 population for persons of all ages and between 3.3 and 6.0 deaths per 1000 population for children under five years of age by sub-district. Two spatial clusters were detected for all-age malaria mortality with only the primary cluster (RR = 1.42, p = 0.001) being statistically significant. Also, two statistically significant space-time clusters were detected for all-age malaria mortality in the study area. The most likely cluster occurred between 2006 and 2011 in five sub-districts with a relative risk of 2.12 (p < 0.001) whilst the secondary cluster which had a relative risk of 2.47 (p < 0.001) occurred between 2005 and 2010 in four sub-districts. Similarly, only the most likely spatial cluster of under-five malaria mortality was statistically significant (RR = 1.36, p = 0.024). Furthermore, three spatio-temporal clusters of under-five malaria mortality were detected in the study area. The primary and second secondary clusters were statistically significant whilst the first secondary cluster had borderline significance. The primary cluster (RR = 4.49, p = 0.002) occurred in two sub-districts between 2006 and 2007. The first secondary cluster (RR = 2.21, P = 0.005) covered four sub-districts and was detected between 2006 and 2011 whereas the second secondary cluster (RR = 2.51, p = 0.003) covered two sub-districts between 2008 and 2013. Ultimately, our analysis identified a number of substantial spatial and apace-time clusters of malaria mortality in the study context, which could aid in the strategic planning, implementation and monitoring of targeted malaria control interventions.
在大多数情况下,疟疾仍然威胁着人类的生存。疟疾死亡率的地理空间分析对于确定疾病负担高的群集和获得疟疾护理机会有限的地区,以便进行有针对性的控制和补救措施至关重要。本研究确定了加纳中部金坦波地区疟疾死亡率的空间和时空集群。我们使用了2005年至2017年存档的1301例疟疾死亡病例,以及这些死亡病例所在分区的全球定位系统(GPS)点位置进行分析。死亡率风险使用Geoda(版本1.12.1.161)的空间经验贝叶斯平滑技术进行平滑和映射,而空间和时空聚类分析使用SaTScan(版本9.6)进行。按分区划分,所有年龄段人口的疟疾死亡率风险为每1000人中1.2至2.4人死亡,五岁以下儿童的死亡率为每1000人中3.3至6.0人死亡。所有年龄段疟疾死亡率存在两个空间聚类,其中只有主要聚类(RR = 1.42, p = 0.001)具有统计学意义。此外,在研究地区的所有年龄段疟疾死亡率中发现了两个具有统计学意义的时空聚类。2006 - 2011年间,5个街道发生了最可能的聚类,相对危险度为2.12 (p < 0.001); 2005 - 2010年间,4个街道发生了第二可能的聚类,相对危险度为2.47 (p < 0.001)。同样,只有最可能的5岁以下儿童疟疾死亡率空间聚类具有统计学意义(RR = 1.36, p = 0.024)。此外,研究区还发现了3个5岁以下儿童疟疾死亡率时空聚类。第一级和第二级聚类具有统计学显著性,而第一级聚类具有临界显著性。2006 - 2007年主要聚集区(RR = 4.49, p = 0.002)分布在2个分区。第一次要聚集性病例(RR = 2.21, P = 0.005)覆盖4个分区,于2006 - 2011年发现;第二次要聚集性病例(RR = 2.51, P = 0.003)覆盖2个分区,于2008 - 2013年发现。最终,我们的分析确定了研究背景下大量的空间和时间上的疟疾死亡率集群,这有助于有针对性的疟疾控制干预措施的战略规划、实施和监测。
{"title":"Geospatial analysis of malaria mortality in the kintampo health and demographic surveillance area of central Ghana","authors":"K. Wiru, Felix Boakye Oppong, Stephaney Gyaase, Oscar Agyei, S. Abubakari, S. Amenga‐Etego, Charles Zandoh, Kwaku Poku Asante","doi":"10.1080/19475683.2020.1853231","DOIUrl":"https://doi.org/10.1080/19475683.2020.1853231","url":null,"abstract":"ABSTRACT Malaria remains a menace to the existence of humanity in most contexts. Geospatial analysis of malaria mortality is crucial to identifying clusters of high disease burden and areas with limited access to malaria care for targeted control and remedial interventions. This study identified spatial and space-time clusters of malaria mortality in the Kintampo area of central Ghana. We used 1301 malaria deaths archived from 2005 to 2017 and Global Positioning System (GPS) point locations of the sub-districts in which these deaths occurred for our analysis. Mortality risks were smoothed and mapped using the Spatial Empirical Bayesian smoothing technique in Geoda (version 1.12.1.161) whereas spatial and spatio-temporal clustering analysis was done using SaTScan (version 9.6). Malaria mortality risks ranged between 1.2 and 2.4 deaths per 1000 population for persons of all ages and between 3.3 and 6.0 deaths per 1000 population for children under five years of age by sub-district. Two spatial clusters were detected for all-age malaria mortality with only the primary cluster (RR = 1.42, p = 0.001) being statistically significant. Also, two statistically significant space-time clusters were detected for all-age malaria mortality in the study area. The most likely cluster occurred between 2006 and 2011 in five sub-districts with a relative risk of 2.12 (p < 0.001) whilst the secondary cluster which had a relative risk of 2.47 (p < 0.001) occurred between 2005 and 2010 in four sub-districts. Similarly, only the most likely spatial cluster of under-five malaria mortality was statistically significant (RR = 1.36, p = 0.024). Furthermore, three spatio-temporal clusters of under-five malaria mortality were detected in the study area. The primary and second secondary clusters were statistically significant whilst the first secondary cluster had borderline significance. The primary cluster (RR = 4.49, p = 0.002) occurred in two sub-districts between 2006 and 2007. The first secondary cluster (RR = 2.21, P = 0.005) covered four sub-districts and was detected between 2006 and 2011 whereas the second secondary cluster (RR = 2.51, p = 0.003) covered two sub-districts between 2008 and 2013. Ultimately, our analysis identified a number of substantial spatial and apace-time clusters of malaria mortality in the study context, which could aid in the strategic planning, implementation and monitoring of targeted malaria control interventions.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"3 1","pages":"139 - 149"},"PeriodicalIF":5.0,"publicationDate":"2020-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84216484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
GIS-BASED MULTI-CRITERIA ANALYSIS OF THE SUITABILITY OF WESTERN SIBERIAN FOREST-STEPPE LANDS 基于gis的西伯利亚西部森林草原土地适宜性多准则分析
IF 5 Q1 GEOGRAPHY Pub Date : 2020-12-08 DOI: 10.1080/19475683.2020.1848920
V. Kalichkin, A. I. Pavlova, O. Logachova
ABSTRACT The main purpose of this work is to assess the suitability of land for cultivation of the main agricultural crop of Western Siberia, namely spring wheat. The algorithm of land suitability assessment was developed on the territory of the test plot of land-use of CJSC Mirny, Kochenevsky District, Novosibirsk Region. For assessment of land suitability on the basis of expert knowledge, criteria related to relief and soil, not only known but also specific, inherent in the area under consideration, have been identified. In the absence of information on the topography and relief of the territory under consideration, the spatial database of geodata was created based on the results of high-resolution digital aerial photography from an unmanned aerial vehicle (UAV). Elementary surfaces (ESs) at the micro-relief level have been determined with the help of GIS tools. Two most popular methods of obtaining criterion weights have been analysed: Analytic Hierarchy Process and the direct ranking method, and under certain conditions, a connection between these methods have been established. To assess the land suitability, the land suitability indices of selected ESs were calculated using GIS-MCDA (Multiple-Criteria Decision Analysis) method Weighted linear combination. Based on the value of land suitability index for all ESs, belonging to a certain suitability class according to FAO classification has been established. A map of land suitability with an assessment of spring wheat sowing expediency was obtained.
摘要本研究的主要目的是评价西伯利亚西部主要农作物春小麦的土地适宜性。在新西伯利亚州科切涅夫斯基区CJSC Mirny土地利用试验田范围内开发了土地适宜性评价算法。为了根据专家知识评价土地的适宜性,已经确定了与地形和土壤有关的标准,这些标准不仅是已知的,而且是所审议地区固有的具体标准。在缺乏有关所审议领土的地形和地形信息的情况下,根据无人驾驶飞行器(UAV)的高分辨率数字航空摄影结果创建了地理数据空间数据库。在GIS工具的帮助下,确定了微地形水平上的基本面。分析了最常用的两种获取指标权重的方法:层次分析法和直接排序法,并在一定条件下,建立了这两种方法之间的联系。采用GIS-MCDA (Multiple-Criteria Decision Analysis,多准则决策分析)加权线性组合方法,对选取的生态系统进行土地适宜性评价。根据所有ESs的土地适宜性指数值,建立了按照FAO分类属于一定适宜性等级的土地适宜性指数。得到了土地适宜性图和春小麦播种适宜性评价图。
{"title":"GIS-BASED MULTI-CRITERIA ANALYSIS OF THE SUITABILITY OF WESTERN SIBERIAN FOREST-STEPPE LANDS","authors":"V. Kalichkin, A. I. Pavlova, O. Logachova","doi":"10.1080/19475683.2020.1848920","DOIUrl":"https://doi.org/10.1080/19475683.2020.1848920","url":null,"abstract":"ABSTRACT The main purpose of this work is to assess the suitability of land for cultivation of the main agricultural crop of Western Siberia, namely spring wheat. The algorithm of land suitability assessment was developed on the territory of the test plot of land-use of CJSC Mirny, Kochenevsky District, Novosibirsk Region. For assessment of land suitability on the basis of expert knowledge, criteria related to relief and soil, not only known but also specific, inherent in the area under consideration, have been identified. In the absence of information on the topography and relief of the territory under consideration, the spatial database of geodata was created based on the results of high-resolution digital aerial photography from an unmanned aerial vehicle (UAV). Elementary surfaces (ESs) at the micro-relief level have been determined with the help of GIS tools. Two most popular methods of obtaining criterion weights have been analysed: Analytic Hierarchy Process and the direct ranking method, and under certain conditions, a connection between these methods have been established. To assess the land suitability, the land suitability indices of selected ESs were calculated using GIS-MCDA (Multiple-Criteria Decision Analysis) method Weighted linear combination. Based on the value of land suitability index for all ESs, belonging to a certain suitability class according to FAO classification has been established. A map of land suitability with an assessment of spring wheat sowing expediency was obtained.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"158 1","pages":"225 - 237"},"PeriodicalIF":5.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86729441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Identifying locations for new bike-sharing stations in Glasgow: an analysis of spatial equity and demand factors 确定格拉斯哥新自行车共享站的位置:空间公平和需求因素分析
IF 5 Q1 GEOGRAPHY Pub Date : 2020-11-24 DOI: 10.1080/19475683.2021.1936172
J. Beairsto, Yufan Tian, Linyu Zheng, Qunshan Zhao, Jinhyun Hong
ABSTRACT Worldwide bike-sharing systems are growing in popularity as an alternative, environmentally friendly mode of transportation. As cities seek to further develop bike-sharing programmes, it is important to consider how systems should expand to simultaneously address existing inequalities in accessibility, and best serve demand. In this paper, we determine ideal locations for future bike-sharing stations in Glasgow, Scotland, by integrating demand modelling with accessibility considerations. We began by analysing the spatio-temporal trends of bike-sharing usage, and assessed the spatial equity of access to stations in Glasgow. To identify important determinants of bike-sharing demand, we ran an ordinary least squares regression model using bike sharing trip data from Nextbike Glasgow. We then quantifiably measured the level of spatial accessibility to stations by applying the two-step floating catchment area (2SFCA) methodology and ran a GIS weighted overlay analysis using the significant determinants of station demand. Lastly, we combined the demand and accessibility results to determine where new stations should be located using a maximum covering location problem (MCLP) that maximized the population served. Our results show that distance from transit stations, distance from downtown, employment rates, and nearby cycling lanes are significant factors affecting station-level demand. Furthermore, levels of spatial access were found to be highest primarily in the centre and eastern neighbourhood of Glasgow. These findings aided in determining areas to prioritize for future station locations, and our methodology can easily be applied to other bike-share programmes with adjustments according to varying aims for system expansion.
作为一种可替代的环保交通方式,全球范围内的共享单车系统越来越受欢迎。随着城市寻求进一步发展自行车共享计划,重要的是要考虑系统应该如何扩展,以同时解决现有的可达性不平等问题,并最好地满足需求。在本文中,我们通过将需求模型与可达性考虑相结合,确定了苏格兰格拉斯哥未来共享单车站的理想位置。我们首先分析了共享单车使用的时空趋势,并评估了格拉斯哥车站的空间公平性。为了确定共享单车需求的重要决定因素,我们使用Nextbike Glasgow的共享单车出行数据运行了一个普通最小二乘回归模型。然后,我们采用两步浮动集水区(2SFCA)方法定量测量了车站的空间可达性水平,并使用车站需求的重要决定因素进行了GIS加权叠加分析。最后,我们将需求和可达性结果结合起来,使用最大覆盖位置问题(MCLP)来确定新车站的位置,从而最大化服务的人口。研究结果表明,与公交车站的距离、与市中心的距离、就业率和附近的自行车道是影响车站级需求的显著因素。此外,格拉斯哥的中部和东部地区的空间通道水平最高。这些发现有助于确定未来车站位置的优先区域,我们的方法可以很容易地应用于其他自行车共享计划,并根据系统扩展的不同目标进行调整。
{"title":"Identifying locations for new bike-sharing stations in Glasgow: an analysis of spatial equity and demand factors","authors":"J. Beairsto, Yufan Tian, Linyu Zheng, Qunshan Zhao, Jinhyun Hong","doi":"10.1080/19475683.2021.1936172","DOIUrl":"https://doi.org/10.1080/19475683.2021.1936172","url":null,"abstract":"ABSTRACT Worldwide bike-sharing systems are growing in popularity as an alternative, environmentally friendly mode of transportation. As cities seek to further develop bike-sharing programmes, it is important to consider how systems should expand to simultaneously address existing inequalities in accessibility, and best serve demand. In this paper, we determine ideal locations for future bike-sharing stations in Glasgow, Scotland, by integrating demand modelling with accessibility considerations. We began by analysing the spatio-temporal trends of bike-sharing usage, and assessed the spatial equity of access to stations in Glasgow. To identify important determinants of bike-sharing demand, we ran an ordinary least squares regression model using bike sharing trip data from Nextbike Glasgow. We then quantifiably measured the level of spatial accessibility to stations by applying the two-step floating catchment area (2SFCA) methodology and ran a GIS weighted overlay analysis using the significant determinants of station demand. Lastly, we combined the demand and accessibility results to determine where new stations should be located using a maximum covering location problem (MCLP) that maximized the population served. Our results show that distance from transit stations, distance from downtown, employment rates, and nearby cycling lanes are significant factors affecting station-level demand. Furthermore, levels of spatial access were found to be highest primarily in the centre and eastern neighbourhood of Glasgow. These findings aided in determining areas to prioritize for future station locations, and our methodology can easily be applied to other bike-share programmes with adjustments according to varying aims for system expansion.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"35 1","pages":"111 - 126"},"PeriodicalIF":5.0,"publicationDate":"2020-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90851994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Drivers’ range anxiety and cost of new EV chargers in Amsterdam: a scenario-based optimization approach 驾驶者里程焦虑和阿姆斯特丹新电动汽车充电器成本:基于场景的优化方法
IF 5 Q1 GEOGRAPHY Pub Date : 2020-11-18 DOI: 10.1080/19475683.2020.1848921
B. Mashhoodi, N. H. V. D. Blij
ABSTRACT Due to the sharp growth in the adaptation of electric vehicles (EV) in the Netherlands and the objectives of the Dutch Climate Accord is to encourage electric mobility, in the coming decades a substantial number of new EV charging facilities needs to be provided. Efficient planning of EV charging infrastructure is coupled with the notion of range anxiety, which is likely to be severely high in case of soon-to-be EV drivers. This study aims to estimate the cost of developing a new charging infrastructure under five scenarios of range anxiety in Amsterdam East. Employing a Linear Integer Programming optimization model, on the basis of geographic data on car registration, existing EV chargers, and electricity substations, it is obtained that if drivers use 90% of their battery before using a charging facility, the existing charging infrastructure needs to be expanded by only 31% to accommodate almost seven times larger number of EVs – the threshold set by the European Union (EU) legislation on the deployment of alternative fuel infrastructure. If drivers use only 30% of the batteries; however, an increase of 167% in infrastructure is inevitable (accounting for almost five million euro of cost). Second, at any point along the range anxiety spectrum, if the interval between charging session increases for 1 day, the overall cost decreases by more than 30%. These findings are discussed, and two policy approaches are proposed: (1) information technology approach; (2) demand-response approach, on the basis of EU legislation on energy efficiency and deployment of alternative fuel infrastructure.
由于荷兰电动汽车(EV)适应的急剧增长以及荷兰气候协议的目标是鼓励电动交通,在未来几十年需要提供大量新的电动汽车充电设施。电动汽车充电基础设施的有效规划与里程焦虑的概念相结合,对于即将成为电动汽车司机的人来说,里程焦虑可能会非常高。本研究旨在估计在阿姆斯特丹东部五种里程焦虑情况下开发新充电基础设施的成本。采用线性整数规划优化模型,基于汽车登记、现有电动汽车充电器和变电站的地理数据,得出如果司机在使用充电设施之前使用了90%的电池,现有的充电基础设施只需要扩大31%,以容纳近7倍的电动汽车数量——这是欧盟(EU)立法对替代燃料基础设施部署设定的门槛。如果司机只使用30%的电池;然而,基础设施增加167%是不可避免的(占近500万欧元的成本)。其次,在里程焦虑谱上的任何一点,如果充电间隔增加1天,则总成本降低30%以上。本文对这些发现进行了讨论,并提出了两种政策途径:(1)信息技术途径;(2)需求响应方法,以欧盟关于能源效率和替代燃料基础设施部署的立法为基础。
{"title":"Drivers’ range anxiety and cost of new EV chargers in Amsterdam: a scenario-based optimization approach","authors":"B. Mashhoodi, N. H. V. D. Blij","doi":"10.1080/19475683.2020.1848921","DOIUrl":"https://doi.org/10.1080/19475683.2020.1848921","url":null,"abstract":"ABSTRACT Due to the sharp growth in the adaptation of electric vehicles (EV) in the Netherlands and the objectives of the Dutch Climate Accord is to encourage electric mobility, in the coming decades a substantial number of new EV charging facilities needs to be provided. Efficient planning of EV charging infrastructure is coupled with the notion of range anxiety, which is likely to be severely high in case of soon-to-be EV drivers. This study aims to estimate the cost of developing a new charging infrastructure under five scenarios of range anxiety in Amsterdam East. Employing a Linear Integer Programming optimization model, on the basis of geographic data on car registration, existing EV chargers, and electricity substations, it is obtained that if drivers use 90% of their battery before using a charging facility, the existing charging infrastructure needs to be expanded by only 31% to accommodate almost seven times larger number of EVs – the threshold set by the European Union (EU) legislation on the deployment of alternative fuel infrastructure. If drivers use only 30% of the batteries; however, an increase of 167% in infrastructure is inevitable (accounting for almost five million euro of cost). Second, at any point along the range anxiety spectrum, if the interval between charging session increases for 1 day, the overall cost decreases by more than 30%. These findings are discussed, and two policy approaches are proposed: (1) information technology approach; (2) demand-response approach, on the basis of EU legislation on energy efficiency and deployment of alternative fuel infrastructure.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"124 1","pages":"87 - 98"},"PeriodicalIF":5.0,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87857497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Geographic pattern of human mobility and COVID-19 before and after Hubei lockdown 湖北封城前后人员流动与COVID-19的地理格局
IF 5 Q1 GEOGRAPHY Pub Date : 2020-11-11 DOI: 10.1080/19475683.2020.1841828
T. E. Chow, Yusik Choi, Mei Yang, D. Mills, R. Yue
ABSTRACT This research investigates how travel restrictions affect the spatiotemporal pattern of human mobility and COVID-19 confirmed cases. Based on recorded movement and Baidu mobility index, in- and out-migration were estimated to examine the geographic pattern of human mobility across many Chinese cities from Jan 1 – Feb 11 of 2020. In addition to the baseline model of city lockdown , this study also explored the time lag effect of COVID-19 incubation period before/after Jan 28 (i.e. 5 days) and Feb 6 (i.e. 2 weeks) as well. Full factorial Analysis of Variance (ANOVA) tests reviewed significant differences of migration pattern by lockdown and origin/destination, which are also significantly associated with the confirmed cases of COVID-19 as well. Specifically, human mobility dropped proportionally after the lockdown regardless of origin location, but Hubei destination was significantly lower than non-Hubei destination. The model assuming an incubation period of 5 days differentiated the differences of COVID-19 cases better than the baseline and 14 days model. Spatiotemporal cluster analysis identified multiple space-time windows that were related to migration trajectory assuming a 5–14 days incubation period. The pre-lockdown clusters due to traveler’s outflow from Wuhan to those megacities were the pathways for international transmission of COVID-19, whereas the post-lockdown clusters were partially related to the migration pattern especially within the eastern part of Hubei around Wuhan. The geographic pattern revealed from this study confirmed the presence of super spreaders that were responsible for regional spreading at the early stage and caused local outbreaks in the latter stage.
本研究旨在探讨旅行限制对人类流动时空格局和新冠肺炎确诊病例的影响。根据记录的人口流动和百度流动性指数,研究人员估计了2020年1月1日至2月11日期间中国许多城市人口流动的地理格局。除了城市封锁的基线模型外,本研究还探讨了1月28日(即5天)和2月6日(即2周)前后新冠肺炎潜伏期的时滞效应。全因子方差分析(ANOVA)测试发现,封锁和出发地/目的地的迁移模式存在显著差异,这也与COVID-19确诊病例显著相关。具体而言,封锁后,无论出发地如何,人员流动性都呈比例下降,但湖北目的地明显低于非湖北目的地。假设潜伏期为5天的模型比基线和14天模型更好地区分了COVID-19病例的差异。时空聚类分析确定了与迁移轨迹相关的多个时空窗口,假设潜伏期为5-14天。封城前武汉人员外流导致的聚集性疫情是新冠肺炎国际传播的途径,封城后的聚集性疫情与武汉周边地区特别是鄂东地区的人员流动模式有一定关系。本研究揭示的地理格局证实了超级传播者的存在,超级传播者在早期负责区域传播,在后期引起局部暴发。
{"title":"Geographic pattern of human mobility and COVID-19 before and after Hubei lockdown","authors":"T. E. Chow, Yusik Choi, Mei Yang, D. Mills, R. Yue","doi":"10.1080/19475683.2020.1841828","DOIUrl":"https://doi.org/10.1080/19475683.2020.1841828","url":null,"abstract":"ABSTRACT This research investigates how travel restrictions affect the spatiotemporal pattern of human mobility and COVID-19 confirmed cases. Based on recorded movement and Baidu mobility index, in- and out-migration were estimated to examine the geographic pattern of human mobility across many Chinese cities from Jan 1 – Feb 11 of 2020. In addition to the baseline model of city lockdown , this study also explored the time lag effect of COVID-19 incubation period before/after Jan 28 (i.e. 5 days) and Feb 6 (i.e. 2 weeks) as well. Full factorial Analysis of Variance (ANOVA) tests reviewed significant differences of migration pattern by lockdown and origin/destination, which are also significantly associated with the confirmed cases of COVID-19 as well. Specifically, human mobility dropped proportionally after the lockdown regardless of origin location, but Hubei destination was significantly lower than non-Hubei destination. The model assuming an incubation period of 5 days differentiated the differences of COVID-19 cases better than the baseline and 14 days model. Spatiotemporal cluster analysis identified multiple space-time windows that were related to migration trajectory assuming a 5–14 days incubation period. The pre-lockdown clusters due to traveler’s outflow from Wuhan to those megacities were the pathways for international transmission of COVID-19, whereas the post-lockdown clusters were partially related to the migration pattern especially within the eastern part of Hubei around Wuhan. The geographic pattern revealed from this study confirmed the presence of super spreaders that were responsible for regional spreading at the early stage and caused local outbreaks in the latter stage.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"47 1","pages":"127 - 138"},"PeriodicalIF":5.0,"publicationDate":"2020-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90906089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Prediction of vessels locations and maritime traffic using similarity measurement of trajectory 利用轨迹相似性测量预测船舶位置和海上交通
IF 5 Q1 GEOGRAPHY Pub Date : 2020-11-04 DOI: 10.1080/19475683.2020.1840434
Danial Alizadeh, A. Alesheikh, M. Sharif
ABSTRACT Maritime traffic prediction is a crucial task for increasing the efficiency of port operations and safety, especially in congested regions. A huge amount of automatic identification system (AIS) data is constantly transmitting from vessels to receivers that contain information about vessels’ movements and characteristics. These historical AIS data can be utilized in movement analyses of vessels. This paper proposes a novel point-based model for location and traffic prediction using vessels’ trajectories adapted from AIS measures. The location prediction procedure is setup based on similarity analysis of historical AIS data. The model is applied to a real dataset of hundreds of vessels’ trajectories in the Strait of Georgia, USA. The correlation results of 0.9976, 0.9887, and 0.9794 for the next 10, 20, and 30 minutes, respectively, imply sufficient correspondence between predicted and actual coordinates. The traffic prediction procedure considers the probability of the appearance of new vessels inside an area of interest (AoI) at different time intervals. The Sorenson similarity index (SSI) is used to measure the accuracy of the traffic prediction model. The SSIs for time intervals of 10, 20, and 30 minutes are 70%, 66%, and 59%, respectively, which show the robustness of the model to predict hot spots inside the AoI.
海上交通预测是提高港口运营效率和安全的关键任务,特别是在拥挤的地区。大量的自动识别系统(AIS)数据不断地从船舶传输到接收器,其中包含有关船舶运动和特征的信息。这些历史AIS数据可用于船舶运动分析。本文提出了一种新的基于点的船舶位置和交通预测模型,该模型采用了自适应AIS测量的船舶轨迹。建立了基于历史AIS数据相似性分析的位置预测程序。该模型应用于美国乔治亚海峡数百艘船只轨迹的真实数据集。接下来的10分钟、20分钟和30分钟的相关结果分别为0.9976、0.9887和0.9794,这意味着预测坐标与实际坐标之间有足够的对应关系。交通预测程序考虑在不同时间间隔的兴趣区域(AoI)内出现新船只的概率。使用Sorenson相似度指数(SSI)来衡量流量预测模型的准确性。10分钟、20分钟和30分钟的ssi分别为70%、66%和59%,表明模型对AoI内部热点的鲁棒性。
{"title":"Prediction of vessels locations and maritime traffic using similarity measurement of trajectory","authors":"Danial Alizadeh, A. Alesheikh, M. Sharif","doi":"10.1080/19475683.2020.1840434","DOIUrl":"https://doi.org/10.1080/19475683.2020.1840434","url":null,"abstract":"ABSTRACT Maritime traffic prediction is a crucial task for increasing the efficiency of port operations and safety, especially in congested regions. A huge amount of automatic identification system (AIS) data is constantly transmitting from vessels to receivers that contain information about vessels’ movements and characteristics. These historical AIS data can be utilized in movement analyses of vessels. This paper proposes a novel point-based model for location and traffic prediction using vessels’ trajectories adapted from AIS measures. The location prediction procedure is setup based on similarity analysis of historical AIS data. The model is applied to a real dataset of hundreds of vessels’ trajectories in the Strait of Georgia, USA. The correlation results of 0.9976, 0.9887, and 0.9794 for the next 10, 20, and 30 minutes, respectively, imply sufficient correspondence between predicted and actual coordinates. The traffic prediction procedure considers the probability of the appearance of new vessels inside an area of interest (AoI) at different time intervals. The Sorenson similarity index (SSI) is used to measure the accuracy of the traffic prediction model. The SSIs for time intervals of 10, 20, and 30 minutes are 70%, 66%, and 59%, respectively, which show the robustness of the model to predict hot spots inside the AoI.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"61 1","pages":"151 - 162"},"PeriodicalIF":5.0,"publicationDate":"2020-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84483556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Can We Forecast Presidential Election Using Twitter Data? An Integrative Modelling Approach 推特数据能预测总统大选吗?综合建模方法
IF 5 Q1 GEOGRAPHY Pub Date : 2020-10-22 DOI: 10.1080/19475683.2020.1829704
Ruowei Liu, X. Yao, Chenxiao Guo, Xuebin Wei
ABSTRACT Forecasting political elections has attracted a lot of attention. Traditional election forecasting models in political science generally take preference in poll surveys and economic growth at the national level as the predictive factors. However, spatially or temporally dense polling has always been expensive. In the recent decades, the exponential growth of social media has drawn enormous research interests from various disciplines. Existing studies suggest that social media data have the potential to reflect the political landscape. Particularly, Twitter data have been extensively used for sentiment analysis to predict election outcomes around the world. However, previous studies have typically been data-driven and the reasoning process was oversimplified without robust theoretical foundations. Most of the studies correlate twitter sentiment directly and solely with the election results which can hardly be regarded as predictions. To develop a more theoretically plausible approach this study draws on political science prediction models and modifies them in two aspects. First, our approach uses Twitter sentiment to replace polling data. Second, we transform traditional political science models from the national level to the county level, the finest spatial level of voting counts. The proposed model has independent variables of support rate based on Twitter sentiment and variables related to economic growth. The dependent variable is the actual voting result. The 2016 U.S. presidential election data in Georgia is used to train the model. Results show that the proposed modely is effective with the accuracy of 81% and the support rate based on Twitter sentiment ranks the second most important feature.
政治选举预测引起了人们的广泛关注。传统的政治学选举预测模型一般倾向于将民意调查和国家层面的经济增长作为预测因素。然而,空间上或时间上密集的轮询总是代价高昂。近几十年来,社交媒体的指数级增长吸引了各个学科的巨大研究兴趣。现有的研究表明,社交媒体数据有可能反映政治格局。特别是,Twitter数据已被广泛用于情绪分析,以预测世界各地的选举结果。然而,以前的研究通常是数据驱动的,推理过程过于简化,没有坚实的理论基础。大多数研究都将推特上的情绪与选举结果直接而单独地联系起来,而选举结果很难被视为预测。为了发展一种理论上更合理的方法,本研究借鉴了政治学预测模型,并在两个方面对它们进行了修改。首先,我们的方法使用Twitter情绪来代替民意调查数据。第二,将传统的政治科学模型从国家层面转变为最精细的投票数量空间层面——县层面。该模型具有基于Twitter情绪的支持率自变量和与经济增长相关的变量。因变量是实际的投票结果。使用2016年美国佐治亚州总统选举数据来训练模型。结果表明,所提出的模型是有效的,准确率为81%,基于Twitter情绪的支持度排名第二。
{"title":"Can We Forecast Presidential Election Using Twitter Data? An Integrative Modelling Approach","authors":"Ruowei Liu, X. Yao, Chenxiao Guo, Xuebin Wei","doi":"10.1080/19475683.2020.1829704","DOIUrl":"https://doi.org/10.1080/19475683.2020.1829704","url":null,"abstract":"ABSTRACT Forecasting political elections has attracted a lot of attention. Traditional election forecasting models in political science generally take preference in poll surveys and economic growth at the national level as the predictive factors. However, spatially or temporally dense polling has always been expensive. In the recent decades, the exponential growth of social media has drawn enormous research interests from various disciplines. Existing studies suggest that social media data have the potential to reflect the political landscape. Particularly, Twitter data have been extensively used for sentiment analysis to predict election outcomes around the world. However, previous studies have typically been data-driven and the reasoning process was oversimplified without robust theoretical foundations. Most of the studies correlate twitter sentiment directly and solely with the election results which can hardly be regarded as predictions. To develop a more theoretically plausible approach this study draws on political science prediction models and modifies them in two aspects. First, our approach uses Twitter sentiment to replace polling data. Second, we transform traditional political science models from the national level to the county level, the finest spatial level of voting counts. The proposed model has independent variables of support rate based on Twitter sentiment and variables related to economic growth. The dependent variable is the actual voting result. The 2016 U.S. presidential election data in Georgia is used to train the model. Results show that the proposed modely is effective with the accuracy of 81% and the support rate based on Twitter sentiment ranks the second most important feature.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"125 1","pages":"43 - 56"},"PeriodicalIF":5.0,"publicationDate":"2020-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76326472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
Airbnb and crime in Barcelona (Spain): testing the relationship using a geographically weighted regression Airbnb和巴塞罗那(西班牙)的犯罪:使用地理加权回归测试关系
IF 5 Q1 GEOGRAPHY Pub Date : 2020-10-20 DOI: 10.1080/19475683.2020.1831603
Diego J. Maldonado-Guzmán
ABSTRACT The existence of works proving the possible relationship empirically that Airbnb lodgings could have with crime in Spain is not known. This research analyzes the relationship between Airbnb lodgings and crimes against the properties and people in Barcelona’s neighbourhoods. To achieve this, we use an ordinary least squares regression model and a geographically weighted regression model. The results show a significant and positive relationship between the higher density of Airbnb lodgings and the higher crime rates in the neighbourhoods, especially of patrimonial nature. Divided by type of leased space, the Airbnb homes, in which the guest shares a room with other guests, show a higher relationship with crimes against property and people. The results of the local model show a spatial heterogeneity in all variables used, indicating the need to address non-stationary spatial processes that reveal hidden patterns. However, the only variable that shows statistically significant local variability is the total Airbnb lodgings variable. Finally, we discussed some unexpected results, proposing some future lines of research.
存在的作品证明可能的关系,经验,爱彼迎住宿可能与犯罪在西班牙是未知的。本研究分析了Airbnb住宿与针对巴塞罗那社区财产和人的犯罪之间的关系。为了实现这一点,我们使用了一个普通的最小二乘回归模型和一个地理加权回归模型。结果表明,Airbnb住宿的密度越高,社区犯罪率越高,尤其是世袭性质的社区犯罪率越高。从租赁空间的类型来看,房客与其他房客共用一个房间的Airbnb房屋,与财产和人身犯罪的关系更高。局部模型的结果显示了所有使用变量的空间异质性,表明需要解决揭示隐藏模式的非平稳空间过程。然而,唯一显示出统计上显著的地方差异的变量是Airbnb总住宿变量。最后,我们讨论了一些意想不到的结果,并提出了一些未来的研究方向。
{"title":"Airbnb and crime in Barcelona (Spain): testing the relationship using a geographically weighted regression","authors":"Diego J. Maldonado-Guzmán","doi":"10.1080/19475683.2020.1831603","DOIUrl":"https://doi.org/10.1080/19475683.2020.1831603","url":null,"abstract":"ABSTRACT The existence of works proving the possible relationship empirically that Airbnb lodgings could have with crime in Spain is not known. This research analyzes the relationship between Airbnb lodgings and crimes against the properties and people in Barcelona’s neighbourhoods. To achieve this, we use an ordinary least squares regression model and a geographically weighted regression model. The results show a significant and positive relationship between the higher density of Airbnb lodgings and the higher crime rates in the neighbourhoods, especially of patrimonial nature. Divided by type of leased space, the Airbnb homes, in which the guest shares a room with other guests, show a higher relationship with crimes against property and people. The results of the local model show a spatial heterogeneity in all variables used, indicating the need to address non-stationary spatial processes that reveal hidden patterns. However, the only variable that shows statistically significant local variability is the total Airbnb lodgings variable. Finally, we discussed some unexpected results, proposing some future lines of research.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"19 1","pages":"147 - 160"},"PeriodicalIF":5.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73543054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Situational awareness extraction: a comprehensive review of social media data classification during natural hazards 情景感知提取:自然灾害期间社会媒体数据分类的综合审查
IF 5 Q1 GEOGRAPHY Pub Date : 2020-10-09 DOI: 10.1080/19475683.2020.1817146
Jirapa Vongkusolkit, Qunying Huang
ABSTRACT Social media (e.g., Twitter and Facebook) can be regarded as vital sources of information during disasters to improve situational awareness (SA) and disaster management since they play a significant role in the rapid spread of information in the event of a disaster. Due to the volume of data is far beyond the capabilities of manual examination, existing works utilize natural language processing methods based on keywords, or classification models relying on features derived from text and other metadata (e.g., user profiles) to extract social media data contributing to SA and automatically categorize them into the relevant classes (e.g., damage and donation). However, the design of the classification schema and the associated information extraction methods are far less than straightforward and highly depend on: (1) the event type, (2) the study or analysis purpose, and (3) the social media platform used. To this end, this paper reviews the literature for extracting social media data and provides an overview of classification schemas that have been used to assess SA in events involving natural hazards from five different analytical perspectives (content, temporal, user, sentiment, and spatiotemporal) by discussing the prevalent topic categories, disaster event types, purpose of studies, and platforms utilized from each schema. Finally, this paper summarizes classification methods, and platforms that are most commonly used for each disaster event type, and outlines a research agenda with recommendations for future innovations.
社交媒体(如Twitter和Facebook)可以被视为灾害期间提高态势感知(SA)和灾害管理的重要信息来源,因为它们在灾害发生时信息的快速传播中发挥了重要作用。由于数据量远远超出了人工检查的能力,现有的作品采用基于关键词的自然语言处理方法,或者基于文本和其他元数据(如用户配置文件)衍生的特征的分类模型,提取有助于SA的社交媒体数据,并将其自动分类到相关的类中(如损坏和捐赠)。然而,分类模式的设计和相关的信息提取方法远不是那么简单,并且高度依赖于:(1)事件类型,(2)研究或分析目的,(3)使用的社交媒体平台。为此,本文回顾了提取社交媒体数据的文献,并从五个不同的分析角度(内容、时间、用户、情感和时空)概述了用于评估自然灾害事件中SA的分类模式,讨论了流行的主题类别、灾害事件类型、研究目的和每个模式使用的平台。最后,本文总结了每种灾害事件类型最常用的分类方法和平台,并概述了研究议程和未来创新的建议。
{"title":"Situational awareness extraction: a comprehensive review of social media data classification during natural hazards","authors":"Jirapa Vongkusolkit, Qunying Huang","doi":"10.1080/19475683.2020.1817146","DOIUrl":"https://doi.org/10.1080/19475683.2020.1817146","url":null,"abstract":"ABSTRACT Social media (e.g., Twitter and Facebook) can be regarded as vital sources of information during disasters to improve situational awareness (SA) and disaster management since they play a significant role in the rapid spread of information in the event of a disaster. Due to the volume of data is far beyond the capabilities of manual examination, existing works utilize natural language processing methods based on keywords, or classification models relying on features derived from text and other metadata (e.g., user profiles) to extract social media data contributing to SA and automatically categorize them into the relevant classes (e.g., damage and donation). However, the design of the classification schema and the associated information extraction methods are far less than straightforward and highly depend on: (1) the event type, (2) the study or analysis purpose, and (3) the social media platform used. To this end, this paper reviews the literature for extracting social media data and provides an overview of classification schemas that have been used to assess SA in events involving natural hazards from five different analytical perspectives (content, temporal, user, sentiment, and spatiotemporal) by discussing the prevalent topic categories, disaster event types, purpose of studies, and platforms utilized from each schema. Finally, this paper summarizes classification methods, and platforms that are most commonly used for each disaster event type, and outlines a research agenda with recommendations for future innovations.","PeriodicalId":46270,"journal":{"name":"Annals of GIS","volume":"1 1","pages":"5 - 28"},"PeriodicalIF":5.0,"publicationDate":"2020-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90682916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
期刊
Annals of GIS
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1