American Journal of Remote Sensing最新文献

Infrared–Resin Crack Measurement and Preventive Work Technology for Maintenance 红外线树脂裂纹测量和预防性维护工作技术

American Journal of Remote Sensing Pub Date : 2024-06-03 DOI: 10.11648/j.ajrs.20241201.14

N. Shimoi, Yu Yamauchi, Kazuhisa Nakasho

{"title":"Infrared–Resin Crack Measurement and Preventive Work Technology for Maintenance","authors":"N. Shimoi, Yu Yamauchi, Kazuhisa Nakasho","doi":"10.11648/j.ajrs.20241201.14","DOIUrl":"https://doi.org/10.11648/j.ajrs.20241201.14","url":null,"abstract":"The use of thermography as a nondestructive evaluation technique is increasingly popular for maintaining concrete structures. Most inspections merely evaluate the locations and shapes of defects on surfaces. To address this shortcoming, it proposes an inspection method and preventive work using a coating-type resin sensor combined with an infrared camera. No method has been developed to assess the depth of defects. In this approach, infrared-reactive resin is applied. Thermographic images of the target area are captured sequentially. Temperature curves obtained at each pixel during the cooling process are analyzed using Fourier transform to differentiate defect states in various parts of the temperature distribution. The temperature change is found to be correlated with the defect size. Approximately 5% aluminum powder is mixed into the applied gel resin. Because of its specific gravity, it tends to concentrate in areas damaged by compression failure or to float. This report discusses technologies related to identification of defects and measuring their size in infrared-reactive resin, with examination of the effectiveness of measures to prevent scattering and collapse of defects caused by structural degradation. A concentric loading test on reinforced concrete columns confined by gel resin ties is described herein. Test variables include concrete compressive strength of 232–244 N/mm<sup>2</sup>, both below and above the equipment hole that caused the defect, and to measure the relation, a comparison with test specimens that are free of defects.\u0000","PeriodicalId":417484,"journal":{"name":"American Journal of Remote Sensing","volume":"129 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141388671","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: 0

Effect of Anthropogenic Activities on the Presence of Nitrogen Dioxide (NO₂) Through Remote Sensing and Ground Based Observations over Emirate of Fujairah, UAE 通过对阿联酋富查伊拉酋长国上空的遥感和地面观测分析人为活动对二氧化氮（NO2）含量的影响

American Journal of Remote Sensing Pub Date : 2023-11-29 DOI: 10.11648/j.ajrs.20231102.13

Reem Yaqoub Yousif Ahmed Abdalla, Aseela Al Moalla, Mohamed Ateeg, Marwa Hossny, Shaher Bano Mirza, F. Ridouane

引用次数: 0

Mangrove Information Extraction and Precision Analysis Based on Multi-Feature Combination 基于多特征组合的红树林信息提取与精度分析

American Journal of Remote Sensing Pub Date : 2023-08-28 DOI: 10.11648/j.ajrs.20231102.12

Mingli Zhou, Angying Xu, Chengming Yang, Lifeng Liang

引用次数: 0

Assessment and Classification of Cloud Coverage Using K-Means Clustering Algorithm for the Sentinel-3 LST Data: A Case Study in the Fujairah Region 基于K-Means聚类算法的Sentinel-3 LST数据云覆盖评估与分类——以富查伊拉地区为例

American Journal of Remote Sensing Pub Date : 2023-07-17 DOI: 10.11648/j.ajrs.20231102.11

Manar Ahmed Mohammed Alblooshi, Sirajul Huda Kalathingal, Shaher Bano Mirza, Fouad Lamghari Ridouane

引用次数: 0

A Pedagogical Approach Using Digitalization and Heritage Building Information Modelling (HBIM) for a New Practice in Architecture and Archaeology 利用数字化和遗产建筑信息模型(HBIM)的教学方法在建筑和考古学中的新实践

American Journal of Remote Sensing Pub Date : 2023-03-09 DOI: 10.11648/j.ajrs.20231101.12

Meriem Zammel, Najla Allani

引用次数: 0

Modeling Land Use Land Cover Using Cellular Automata - Markov Chain: A Case of Belete Gera Regional Forest Priority Area, South Western Ethiopia 基于元胞自动机-马尔可夫链的土地利用-土地覆盖建模——以埃塞俄比亚西南部Belete Gera区域森林优先区为例

American Journal of Remote Sensing Pub Date : 2023-02-24 DOI: 10.11648/j.ajrs.20231101.11

Wendafiraw Abdisa Gemmechis, Abiyot Legesse Tura

引用次数: 1

Remote Sensing for Land Resources: A Review on Satellites, Data Availability and Applications 土地资源遥感:卫星、数据可用性和应用综述

American Journal of Remote Sensing Pub Date : 2023-01-10 DOI: 10.11648/j.ajrs.20221002.12

Winfred Mbinya Manetu, John Momanyi Mironga, Jackob Haywood Ondiko

引用次数: 0

Google Earth Engine Based Approach for Assessment and Management of Flood in Ganga Sub Basin – Ghaghra Confluence to Gomti Confluence 基于谷歌Earth Engine的恒河次流域—加格拉至戈提汇合处洪水评价与管理方法

American Journal of Remote Sensing Pub Date : 2021-08-05 DOI: 10.11648/J.AJRS.20210902.11

Gayatri Dwivedi, Pragati Singh, A. Singh, R. Upadhyay

{"title":"Google Earth Engine Based Approach for Assessment and Management of Flood in Ganga Sub Basin – Ghaghra Confluence to Gomti Confluence","authors":"Gayatri Dwivedi, Pragati Singh, A. Singh, R. Upadhyay","doi":"10.11648/J.AJRS.20210902.11","DOIUrl":"https://doi.org/10.11648/J.AJRS.20210902.11","url":null,"abstract":"Floods are an intense and frequent disaster happening in numerous portions of the world. Flood is a excess of water that submerges surroundings that is normally dry. It is the sever problem in Ganga Sub Basin - Ghaghra Confluence to Gomti Confluence of Uttar Pradesh. Near real time mapping of inundated areas is very important for figuring out the flood extent, deployment of emergency reaction teams, and evaluation of damages and casualties. In this thesis work, a real time flood mapping and monitoring online WEB based application using Sentinel-1 time-series data has been developed on Google Earth Engine (GEE) platform. The SAR Data has Capability to see through the cloud and during the flood the major problem with optical data is, it can not see through the cloud. In this thesis work the SAR data has been used to identify the inundated pixels before and during flood to identify the extent and calamities due to flood. Flood is a hazardous natural phenomenon which severely affect lives, goods and services. Monitoring of flood affected area becomes compulsory for emergency responses but due to damage of network and risk for lives in going such areas it becomes a very typical task. Google Earth Engine (GEE) is an open-source cloud based online platform which reduces this problem. In this thesis work the GEE platform has been used for Near-Real time flood mapping in the study area. The GEE based app “FLOOD MONITORING SYSTEM: GANGA SUB BASIN – GHAGHRA CONFLUENCE TO GOMTI CONFLUENCE” has been developed for Near-Real time flood Mapping.","PeriodicalId":417484,"journal":{"name":"American Journal of Remote Sensing","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125269697","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: 0

Land Use / Land Cover Change in the Western Highlands of Cameroon: Case of the Sabga-Bamunka Area (1980-2020) 喀麦隆西部高地土地利用/覆被变化:以Sabga-Bamunka地区为例(1980-2020)

American Journal of Remote Sensing Pub Date : 2021-05-08 DOI: 10.11648/J.AJRS.20210901.17

Tankie Quinta Shegwe, Wirsiy Destain Yungsi, Sirri Erika Suh, Tchana Christian Brice, Aloysious Kohtem Lebga, Takem Mbi Bienvenu Magloire, C. Ngouanet

{"title":"Land Use / Land Cover Change in the Western Highlands of Cameroon: Case of the Sabga-Bamunka Area (1980-2020)","authors":"Tankie Quinta Shegwe, Wirsiy Destain Yungsi, Sirri Erika Suh, Tchana Christian Brice, Aloysious Kohtem Lebga, Takem Mbi Bienvenu Magloire, C. Ngouanet","doi":"10.11648/J.AJRS.20210901.17","DOIUrl":"https://doi.org/10.11648/J.AJRS.20210901.17","url":null,"abstract":"Man has greatly influenced the environment through his different activities, technology and dynamism. These modifications are land use/land cover changes. This research describes and analyses the implication of land use dynamics on resources in the Sabga-Bamunka area over time and space from 1980 to 2020. Remote sensing techniques and Geographic Information System were used in describing and analysing land use/cover changes in the Sabga-Bamunka area. Primary data was obtained through field observation in order to confirm observation on satellite imageries. Land use maps were produced using GIS software. Maps were generated to show changes in land use/land cover which were transposed into table and bar graphs to show the magnitude of changes. The analysis of static land use maps of 1980, 2010 and 2020 all showed that there are significant changes observed on forest cover, farmland, grazing land and settlement area. The findings revealed that the study area has experienced a drastic change in land use/land cover during the last forty years. The study area is characterised with decrease in grassland areas, forest and increase in settlement and farmland due to the increasing population which are the main triggering force of land use/land cover changes that has led to the reduction in vegetal cover. Forest decreased from 6 568 hectares (26%) in 1980 to 2 842 hectares (10%) in 2020 indicating a magnitude change of -3726 (-29%) and grass land decreased from 16 434 hectares (64%) in 1980 to 14 585 hectares (53%) in 2020 that is a magnitude change of -1849 (-14%). These decreases gave way to settlements and farmland. Therefore, a reduction in the excessive consumption of fuel wood, the practice of eco-forestry, raising of awareness and a dialogue plate-form are amongst the measures recommended to reduce land use/land cover change in the study area.","PeriodicalId":417484,"journal":{"name":"American Journal of Remote Sensing","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134274651","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: 0

Household Solid Waste, a Challenge of Urban Sanitation: Case of Ngor Municipality (Dakar, Senegal) 生活固体废物是城市卫生的挑战:以塞内加尔达喀尔恩戈尔市为例

American Journal of Remote Sensing Pub Date : 2021-04-26 DOI: 10.11648/J.AJRS.20210901.16

R. Ndiaye, Bouna Ndiaye, V. Traoré, A. Diaw

{"title":"Household Solid Waste, a Challenge of Urban Sanitation: Case of Ngor Municipality (Dakar, Senegal)","authors":"R. Ndiaye, Bouna Ndiaye, V. Traoré, A. Diaw","doi":"10.11648/J.AJRS.20210901.16","DOIUrl":"https://doi.org/10.11648/J.AJRS.20210901.16","url":null,"abstract":"This study aims to understand factors that are causing the malfunction of the garbage collection system in the municipality of Ngor. To achieve this goal, we have adopted a methodological approach that focuses essentially on three components: (i) the investigation of 1/4 of Ngor's concessions through observation, interviews, questionnaires and documentation for collect socio-economic data; (ii) GPS surveys and mapping of the study area using GIS techniques and tools based on satellite images; (iii) analysis of collected information based on descriptive statistics. The results obtained reveal a bad garbage collection, which is at the origin of the insalubrities, the development of flies, mosquitoes and rodents having repercussions on the frame of life of the populations. It is also at the origin of the narrow streets, thus making access to neighborhoods difficult; this leads people to dispose of garbage in the open air or on the beach and in the evacuation channels, to the detriment of environmental concerns. This study has clearly highlighted deficiencies of human nature in the system of collection of household garbage in the municipality of Ngor. These results should provide the municipal authorities with a basis for thinking about the reformulation of their system of governance of such garbage and their political will to definitively solve the problem.","PeriodicalId":417484,"journal":{"name":"American Journal of Remote Sensing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130043416","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: 0