130 research outputs found

    Remote Sensing Applications in Monitoring of Protected Areas:A Bibliometric Analysis

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    The development of remote sensing platforms and sensors and improvement in science and technology provide crucial support for the monitoring and management of protected areas. This paper presents an analysis of research publications, from a bibliometric perspective, on the remote sensing of protected areas. This analysis is focused on the period from 1991 to 2018. For data, a total of 4546 academic publications were retrieved from the Web of Science database. The VOSviewer software was adopted to evaluate the co-authorships among countries and institutions, as well as the co-occurrences of author keywords. The results indicate an increasing trend of annual publications in the remote sensing of protected areas. This analysis reveals the major topical subjects, leading countries, and most influential institutions around the world that have conducted relevant research in scientific publications; this study also reveals the journals that include the most publications, and the collaborative patterns related to the remote sensing of protected areas. Landsat, MODIS, and LiDAR are among the most commonly used satellites and sensors. Research topics related to protected area monitoring are mainly concentrated on change detection, biodiversity conservation, and climate change impact. This analysis can help researchers and scholars better understand the intellectual structure of the field and identify the future research directions

    Geocaching: tracing geotagged social media research using mixed methods

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    This thesis explores the development of academic research with geotagged social media data (geosocial research) - an emerging computational, digital social research field - using 19 semi-structured interviews with scholars from diverse disciplines, participant observation at a geosocial research summer school and scientometrics. It asks: 'how can we study the development of geosocial research approaches through combining STS and scientometrics?' for five main reasons: to explore the diversity of computational social research; reflect on the ESRC's (2013) call to 'close the gap' between quantitative and qualitative human geography; contribute to methodological discussions in academic literature which call for combining STS and scientometrics; co-compose knowledge with distinct ways of knowing through mixing methods; and inform research methods curriculum development in the social sciences. Using new forms of digital data (like social media posts) is core to contemporary social science. Scholars from diverse disciplines conduct geosocial research. It thus provides rich opportunities to study how diverse approaches to computational social research develop. I combine STS and diverse scientometric methods as part of a single case study iteratively to explore how they can co-compose knowledge. The thesis contributes to literature which explores the STS - scientometrics interface. Most existing studies either reflect on diverse mixed methods approaches from theoretical or methodological perspectives, or provide worked examples using specific mixed methods designs. Conceptually, this thesis contributes by highlighting the need to develop and evaluate the affordances of computational methods for STS in light of the interpretative context - including research questions, characteristics of the studied research practice, theories and prior findings. I developed computational methods iteratively, in light of my theoretical and empirical knowledge about geosocial research. Empirically, the thesis first contributes by showing how diverse combinations of STS and scientometrics – including statistical and visual network analyses as well as descriptive statistics - can inform a single case study. Second, it offers three ways STS and scientometrics can co-compose knowledge by aligning their units of analyses, reflecting on how calculation acts inform qualitative analysis even when analytical units are not aligned, and using each method inductively. I combined STS and scientometrics to study practices through which geosocial research approaches develop - including collaboration, developing (sub)-disciplinary communities and methods' mediation of geosocial research. I also identified geosocial research approaches and compared them using mixed methods. Finally, I combined insights from STS and scientometrics to highlight the construction of my own analyses. Using mixed methods, the thesis argues that geosocial research is a collection of approaches rather than a coordinated community. I highlight fourteen practices that enable scholars to develop their approaches, including interdisciplinary collaboration; setting up distinct geosocial laboratories to experiment with geosocial data; reflecting on the data analysis process; and using local knowledge about spaces. I differentiate `social', `technical' and 'geographic' approaches, which differ in terms of the methods they use and spatial units they study. Finally, I illustrate approaches' heterogeneity - including their diverse computational approaches - and similarities, such as their urban studies focus

    Enabling the Development and Implementation of Digital Twins : Proceedings of the 20th International Conference on Construction Applications of Virtual Reality

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    Welcome to the 20th International Conference on Construction Applications of Virtual Reality (CONVR 2020). This year we are meeting on-line due to the current Coronavirus pandemic. The overarching theme for CONVR2020 is "Enabling the development and implementation of Digital Twins". CONVR is one of the world-leading conferences in the areas of virtual reality, augmented reality and building information modelling. Each year, more than 100 participants from all around the globe meet to discuss and exchange the latest developments and applications of virtual technologies in the architectural, engineering, construction and operation industry (AECO). The conference is also known for having a unique blend of participants from both academia and industry. This year, with all the difficulties of replicating a real face to face meetings, we are carefully planning the conference to ensure that all participants have a perfect experience. We have a group of leading keynote speakers from industry and academia who are covering up to date hot topics and are enthusiastic and keen to share their knowledge with you. CONVR participants are very loyal to the conference and have attended most of the editions over the last eighteen editions. This year we are welcoming numerous first timers and we aim to help them make the most of the conference by introducing them to other participants

    Development of Geospatial Models for Multi-Criteria Decision Making in Traffic Environmental Impacts of Heavy Vehicle Freight Transportation

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    Heavy vehicle freight transportation is one of the primary contributors to the socio-economic development, but it has great influence on traffic environment. To comprehensively and more accurately quantify the impacts of heavy vehicles on road infrastructure performance, a series of geospatial models are developed for both geographically global and local assessment of the impacts. The outcomes are applied in flexible multi-criteria decision making for the industrial practice of road maintenance and management

    Research trends in pavement management during the first years of the 21st century: a bibliometric analysis during the 2000-2013 period

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    A bibliometric analysis based on Scopus database was carried out to identify the global research trends related to pavement management area from 2000 to 2013, and to improve the understanding of the research topics in that period. The results reveal two stable periods of annual publications, from 2000 to 2002 with an average rate of 27, and from 2003 to 2010 with a value of 51; and a period with an increasing production rate of 20 publications per year after 2010. According to the document-type distribution, articles and conference papers have almost the same contribution. The most productive country was the United States, followed by Canada and China. The research trend in the field of pavement management could be grouped into three main areas. The first one is related to pavement management systems, which attracted the greatest attention, especially optimization processes with various objectives and lifecycle cost analysis. The second group is about pavement performance modeling, where calibration of mechanical empirical models was largely developed. Lastly, data collection had also occupied several papers, mainly about cracking classification. Sustainability aspects in pavement management became an emergent issue. The trending issues in that period, in these categories, were summarized in the paper.This research was funded by Erasmus Mundus Action 2 ACTIVE “Atlantic Caucasus Technical universities Initiative for Valuable Education” programme grant number 2013-2523/001-001 EMA2; by Education Council of the Castille and Leon Government of Spain (Junta de Castilla y León) grant number BU0009A06 and UB 07/03, by Spanish Ministry of Economy and Competitiveness (MINECO) grant number CTQ2014-56820-JIN Project, co-financed by FEDER funds from European Union and by Basque Government grant number IT781-13

    Geocaching: tracing geotagged social media research using mixed methods

    Get PDF
    This thesis explores the development of academic research with geotagged social media data (geosocial research) - an emerging computational, digital social research field - using 19 semi-structured interviews with scholars from diverse disciplines, participant observation at a geosocial research summer school and scientometrics. It asks: 'how can we study the development of geosocial research approaches through combining STS and scientometrics?' for five main reasons: to explore the diversity of computational social research; reflect on the ESRC's (2013) call to 'close the gap' between quantitative and qualitative human geography; contribute to methodological discussions in academic literature which call for combining STS and scientometrics; co-compose knowledge with distinct ways of knowing through mixing methods; and inform research methods curriculum development in the social sciences. Using new forms of digital data (like social media posts) is core to contemporary social science. Scholars from diverse disciplines conduct geosocial research. It thus provides rich opportunities to study how diverse approaches to computational social research develop. I combine STS and diverse scientometric methods as part of a single case study iteratively to explore how they can co-compose knowledge. The thesis contributes to literature which explores the STS - scientometrics interface. Most existing studies either reflect on diverse mixed methods approaches from theoretical or methodological perspectives, or provide worked examples using specific mixed methods designs. Conceptually, this thesis contributes by highlighting the need to develop and evaluate the affordances of computational methods for STS in light of the interpretative context - including research questions, characteristics of the studied research practice, theories and prior findings. I developed computational methods iteratively, in light of my theoretical and empirical knowledge about geosocial research. Empirically, the thesis first contributes by showing how diverse combinations of STS and scientometrics – including statistical and visual network analyses as well as descriptive statistics - can inform a single case study. Second, it offers three ways STS and scientometrics can co-compose knowledge by aligning their units of analyses, reflecting on how calculation acts inform qualitative analysis even when analytical units are not aligned, and using each method inductively. I combined STS and scientometrics to study practices through which geosocial research approaches develop - including collaboration, developing (sub)-disciplinary communities and methods' mediation of geosocial research. I also identified geosocial research approaches and compared them using mixed methods. Finally, I combined insights from STS and scientometrics to highlight the construction of my own analyses. Using mixed methods, the thesis argues that geosocial research is a collection of approaches rather than a coordinated community. I highlight fourteen practices that enable scholars to develop their approaches, including interdisciplinary collaboration; setting up distinct geosocial laboratories to experiment with geosocial data; reflecting on the data analysis process; and using local knowledge about spaces. I differentiate `social', `technical' and 'geographic' approaches, which differ in terms of the methods they use and spatial units they study. Finally, I illustrate approaches' heterogeneity - including their diverse computational approaches - and similarities, such as their urban studies focus

    Remote sensing of night lights: a review and an outlook for the future

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    This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recordRemote sensing of night light emissions in the visible band offers a unique opportunity to directly observe human activity from space. This has allowed a host of applications including mapping urban areas, estimating population and GDP, monitoring disasters and conflicts. More recently, remotely sensed night lights data have found use in understanding the environmental impacts of light emissions (light pollution), including their impacts on human health. In this review, we outline the historical development of night-time optical sensors up to the current state of the art sensors, highlight various applications of night light data, discuss the special challenges associated with remote sensing of night lights with a focus on the limitations of current sensors, and provide an outlook for the future of remote sensing of night lights. While the paper mainly focuses on space borne remote sensing, ground based sensing of night-time brightness for studies on astronomical and ecological light pollution, as well as for calibration and validation of space borne data, are also discussed. Although the development of night light sensors lags behind day-time sensors, we demonstrate that the field is in a stage of rapid development. The worldwide transition to LED lights poses a particular challenge for remote sensing of night lights, and strongly highlights the need for a new generation of space borne night lights instruments. This work shows that future sensors are needed to monitor temporal changes during the night (for example from a geostationary platform or constellation of satellites), and to better understand the angular patterns of light emission (roughly analogous to the BRDF in daylight sensing). Perhaps most importantly, we make the case that higher spatial resolution and multispectral sensors covering the range from blue to NIR are needed to more effectively identify lighting technologies, map urban functions, and monitor energy use.European Union Horizon 2020Helmholtz AssociationNatural Environment Research Council (NERC)Chinese Academy of ScienceLeibniz AssociationIGB Leibniz Institut

    Proceedings of the SUPTM 2022 conference

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    This book includes the proceedings of the 1st international Conference on Future Challenges in Sustainable Urban Planning & Territorial Management celebrated on January 17-19, 2022. Urban planning is an essential tool in our global society's journey towards sustainability. This tool is as important as the territorial management to execute the plans. Both, planning and management, must be efficient to achieve the goal of sustainability inside the general framework of Sustainable Development Goals of United Nations. It does not exist any B planet so, identify urban & territorial challenges in our territories such reaching sustainable mobility, diagnose natural hazards and control land resource consumption is mandatory for our XXI century generation. Planning land uses compatibles with the ecosystem services of territory and manage them by public-private cooperation systems is a greatly challenge for our global society. Human activities do not have very frequently among their objectives to maintain ecosystem services of territory. Therefore, this field of research must help to guarantee the maintenance of natural resources, also called Natural Capital, necessary for social and economic activities of our global society. This conference aims to be a space to share research works, ideas, experiences, projects, etc. in this field of knowledge. We want to put in value that planning and management are subjects that include technological and social matters and their own methodologies. Laws, rules and cultures of different countries around the world are or can be very diverse. But the planet is only one. Technologies are shared, methodologies to analyze territories are also communal to share experiences about the global goal of sustainability, so these events are a necessary way to build our joint future. We trust that the success of this first edition of the SUPTM conference (which has been attended by more than 200 researchers from the five continents) will be an opening step towards international collaboration and the dissemination of knowledge that is so important in this field of urban planning and territorial management
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