Relevant bibliographies by topics / Spatial metrics

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Spatial metrics'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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Journal articles on the topic "Spatial metrics"

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Koch, Julian, Mehmet Cüneyd Demirel, and Simon Stisen. "The SPAtial EFficiency metric (SPAEF): multiple-component evaluation of spatial patterns for optimization of hydrological models." Geoscientific Model Development 11, no. 5 (2018): 1873–86. http://dx.doi.org/10.5194/gmd-11-1873-2018.

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Abstract. The process of model evaluation is not only an integral part of model development and calibration but also of paramount importance when communicating modelling results to the scientific community and stakeholders. The modelling community has a large and well-tested toolbox of metrics to evaluate temporal model performance. In contrast, spatial performance evaluation does not correspond to the grand availability of spatial observations readily available and to the sophisticate model codes simulating the spatial variability of complex hydrological processes. This study makes a contribu
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Parisien, Marc-André, Vernon S. Peters, Yonghe Wang, John M. Little, Erin M. Bosch, and Brian J. Stocks. "Spatial patterns of forest fires in Canada, 1980 - 1999." International Journal of Wildland Fire 15, no. 3 (2006): 361. http://dx.doi.org/10.1071/wf06009.

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The present study characterized the spatial patterns of forest fires in 10 fire-dominated ecozones of Canada by using a database of mapped fires ≥200 ha from 1980 to 1999 (n = 5533 fires). Spatial metrics were used individually to compare measures of fire size, shape (eccentricity and complexity), clustering, and geographic orientation among ecozones and were used concurrently in a multivariate analysis. In addition, a set of factors that influence the fire regime at the ecozone level – topography, climate, fuels, and anthropogenic factors – was compared with the metric outputs. We found signi
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Crowder, David W., and Panayiotis Diplas. "Evaluating spatially explicit metrics of stream energy gradients using hydrodynamic model simulations." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 7 (2000): 1497–507. http://dx.doi.org/10.1139/f00-074.

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Localized energy gradients and velocity shelters created by boulders, bars, and channel banks are often essential components of aquatic habitat. Two-dimensional hydraulic models have the potential to predict the amounts and locations of such spatially varying flow patterns. However, little effort has been devoted to reproducing these flow features and developing spatial habitat metrics to describe and differentiate between various types of flow patterns. Two-dimensional numerical simulations, based on actual channel geometry, are used here to model a variety of flow patterns encountered in nat
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Fry, Edward W. S., Sophie Triantaphillidou, Robin B. Jenkin, Ralph E. Jacobson, and John R. Jarvis. "Scene-and-Process-Dependent Spatial Image Quality Metrics." Journal of Imaging Science and Technology 63, no. 6 (2019): 60407–1. http://dx.doi.org/10.2352/j.imagingsci.technol.2019.63.6.060407.

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Abstract Spatial image quality metrics designed for camera systems generally employ the Modulation Transfer Function (MTF), the Noise Power Spectrum (NPS) and a visual contrast detection model. Prior art indicates that scene-dependent characteristics of non-linear, content-aware image processing are unaccounted for by MTFs and NPSs measured by traditional methods. The authors present two novel metrics: the log Noise Equivalent Quanta (log NEQ) and Visual log NEQ. They both employ Scene-and-Process-Dependent MTF (SPD-MTF) and NPS (SPD-NPS) measures, which account for signal transfer and noise s
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Niedzielski, Michał. "Grocery store accessibility: Different metrics – Different modal disparity results and spatial patterns." Journal of Transport Geography 96, no. 103160 (2021): 11. https://doi.org/10.1016/j.jtrangeo.2021.103160.

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Most accessibility studies focus on within transport mode travel performance variations. However, modal accessibility disparity analysis adds value to the single-mode analysis by assessing the interaction between different transport modes and land use. A review of modal disparity studies shows that different accessibility metrics lead to different results, and so it is unclear how this impacts modal accessibility disparity variation. Moreover, the correspondence of the disparity spatial pattern between the different metrics is unclear. This research examines how three typical accessibility met
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Ikiriko, Tamunoikuronibo Dawaye, and Simeipiri Wenike Johnbull. "Quantifying Urban Sprawl: An Examination of Spatial Measurement and Metrics." International Journal of Research Publication and Reviews 5, no. 1 (2024): 2097–110. http://dx.doi.org/10.55248/gengpi.5.0124.0240.

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Crowder, David W., and Panayiotis Diplas. "Vorticity and circulation: spatial metrics for evaluating flow complexity in stream habitats." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 4 (2002): 633–45. http://dx.doi.org/10.1139/f02-037.

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Channel topography, formed by boulders, submerged bars, and meanders, creates complex flow patterns. These flow patterns exist over a variety of spatial scales and provide habitat for many aquatic organisms. Spatial flow features cannot be adequately characterized with qualitative descriptions or hydraulic metrics such as depth and velocity. Two-dimensional hydraulic model simulations, based on detailed channel geometry, are used to develop and test vorticity (a point metric) and a circulation-based metric (an area metric) as means of quantifying spatial flows occurring within micro-, meso-, a
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Fu, Gang, Wei Wang, Junsheng Li, Nengwen Xiao, and Yue Qi. "Prediction and Selection of Appropriate Landscape Metrics and Optimal Scale Ranges Based on Multi-Scale Interaction Analysis." Land 10, no. 11 (2021): 1192. http://dx.doi.org/10.3390/land10111192.

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Landscape metrics are widely used in landscape planning and land use management. Understanding how landscape metrics respond with scales can provide more accurate prediction information; however, ignoring the interference of multi-scale interaction may lead to a severe systemic bias. In this study, we quantitatively analyzed the scaling sensitivity of metrics based on multi-scale interaction and predict their optimal scale ranges. Using a big data method, the multivariate adaptive regression splines model (MARS), and the partial dependence model (PHP), we studied the scaling relationships of m
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Biraghi, C. A., and E. Lenzi. "SPATIAL PATTERN ANALYSIS THROUGH DISTRIBUTION METRICS." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B4-2022 (June 1, 2022): 69–77. http://dx.doi.org/10.5194/isprs-archives-xliii-b4-2022-69-2022.

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Abstract. Moving from the controversial results on the link between urban structure and performance aspect, this article wants to encourage the development of the independent research on urban structure, and more generally on spatial patterns, at different scales to enable future further correlations with a wider set of performance aspects (environmental, social, economic, medical). The work also exploits the potential of several unsupervised learning algorithms, whose performance and power are increasingly promising and whose use is becoming more widespread in different fields; but for which
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Rinck, Mike, Andrea Hähnel, Gordon H. Bower, and Ulrich Glowalla. "The metrics of spatial situation models." Journal of Experimental Psychology: Learning, Memory, and Cognition 23, no. 3 (1997): 622–37. http://dx.doi.org/10.1037/0278-7393.23.3.622.

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Dissertations / Theses on the topic "Spatial metrics"

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Mirkarimi, Hamed, and hamed mirkarimi@student rmit edu au. "Landscape ecological planning for protected areas using spatial and temporal metrics." RMIT University. Mathematical and Geospatial Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080507.122506.

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The natural characteristics of protected areas have changed for a variety of reasons through time. Changes in protected area landscapes can occur because of natural and/or cultural processes. Natural processes such as geomorphological disturbance and climatic condition can permanently and/or temporarily change the characteristics of the environment. In addition, changes in human needs, knowledge and activities are the cultural driving forces behind changing characteristics of landscape through time. These changes can be studied both spatially and temporally. Spatially, protected area landsc
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Vilmi, A. (Annika). "Assessing freshwater biodiversity:insights from different spatial contexts, taxonomic groups and response metrics." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526216669.

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Abstract Freshwater ecosystems are severely threatened by a variety of anthropogenic stressors. In order to keep track with at least part of the changes, it is important to efficiently assess and monitor freshwater biological diversity. Biological assessment programs are developed to detect human-induced changes in the ecological state of aquatic systems. These programs typically rely on the assumption that environmental conditions are the sole drivers of biological communities occupying a site and, thus, these local communities would correctly inform about environmental conditions. Recently,
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Myrberg, Anton. "Spatial complexity metrics: : What is available and how they assess novice projects." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-21907.

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McKenzie, Samuel John Paul. "Spatial metrics of land cover change in an agricultural landscape in Northern Ireland." Thesis, University of Ulster, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529577.

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Krenz, Kimon. "Network centralities in polycentric urban regions : methods for the measurement of spatial metrics." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10052165/.

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The primary aim of this thesis is to explain the complex spatial organisations of polycentric urban regions (PURs). PURs are a form of regional morphology that often evolves from post-industrial structures and describe a subnational area featuring a plurality of urban centres. As of today, the analysis of the spatial organisation of PURs constitutes a hitherto uncharted territory. This is due to PURs’ inherent complexity that poses challenges for their conceptualisation. In this context, this thesis reviews theories on the spatial organisation of regions and cities and seeks to make a foundati
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Ramotubei, Pheello. "Understanding landscape dynamics using spatial metrics: A case of Maseru City Council (MCC), Lesotho." Master's thesis, Faculty of Engineering and the Built Environment, 2018. http://hdl.handle.net/11427/30018.

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Remote sensing provides accurate and timely data for earth’s change detections for better decision making. Both land use and land covers (LULC) are important dynamics in understanding the dynamics interaction between human activities and the environment and the changes within the environment due to these interactions. Rapid population growth together with an irreversible process of urbanisation results in productive agricultural land which serves as the main source of livelihood under pressure for residential purposes. The reason being rapid urbanisation led to rapid increase of informal settl
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Sousa, F. Raquel R. F. de. "Exploratory spatial analysis of topographic surface metrics for the prediction of water table occurrence." Master's thesis, Universidade de Évora, 2014. http://hdl.handle.net/10174/12215.

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Starting from the premise that water table in aquifers follows topographic surface as well as underground flow direction tends to be consistent with the surface streams flow directions, the present work presents the essays of the research to define a model that predicts, through a piecewise multiple regression, groundwater level in the Estremoz-Cano Aquifer System and in the surrounding igneous and metamorphic rocks of the OMZ as a function of topography, namely a set of terrain metrics like curvature and structural curvature to be related with the static water level (SWL) measured on dug well
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Hai, Pham Minh, and Yasushi Yamaguchi. "CHARACTERIZING THE URBAN GROWTH OF HANOI, NAGOYA, AND SHANGHAI CITY USING REMOTE SENSING AND SPATIAL METRICS." IEEE, 2008. http://hdl.handle.net/2237/12105.

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Näkne, Henrik. "Video Quality Metric improvement using motion and spatial masking." Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275114.

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Objective video quality assessment is of great importance in video compression and other video processing applications. In today's encoders Peak Signal to Noise Ratio or Sum of Absolute Differences are often used, though these metrics have limited correlation to perceived quality. In this paper other block-based quality measures are evaluated with superior performance on compression distortion when evaluating correlation with Mean Opinion Scores. The major results are that Block-based Visual Information Fidelity with optical flow and intra-frame Gaussian weighting outperforms PSRN, VIF, and SS
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Loraamm, Rebecca Whitehead. "Road-based Landscape Metrics for Quantifying Habitat Fragmentation." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3214.

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Landscape metrics measure the composition and configuration of habitats within landscapes; often the goal is to measure fragmentation. While a variety of existing metrics characterize the connectivity and contiguity of habitat patches, most do not explicitly consider the fragmenting effects of roads in their formulations. This research develops a set of new landscape metrics that explicitly quantify how roads disconnect and break apart habitat patches. This research introduces the following four metrics to consider the fragmenting effects of transportation networks: (1) Number of Connected Pat
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Books on the topic "Spatial metrics"

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Sudra, Paweł. Rozpraszanie i koncentracja zabudowy na przykładzie aglomeracji warszawskiej po 1989 roku = Dispersion and concentration of built-up areas on the example of the Warsaw agglomeration after 1989. Instytut Geografii i Przestrzennego Zagospodarowania im. Stanisława Leszczyckiego, Polska Akademia Nauk, 2020. http://dx.doi.org/10.7163/9788361590057.

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The research problem undertaken in the study is the occurrence of dispersed and concentrated built-up (in particular residential) area patterns caused by suburbanisation processes in a large urban agglomeration, on the example of the Warsaw metropolitan area. The research concerned the period after 1989, when the political and economic transformation in Poland began. The historical and contemporary socio-economic conditions of suburbanization and urban sprawl are described, which have the features of a spontaneous, chaotic dispersion, quite different than in Western countries. It is partly to
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Mercati, Flavio. York’s Solution to the Initial-Value Problem. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789475.003.0008.

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In this chapter I briefly review York’s method (or the conformal method) for solving the initial value problem of (GR). This method, developed initially by Lichnerowicz and then generalized by Choquet-Bruhat and York, allows to find solutions of the constraints of (GR) (in particular the Hamiltonian, or refoliation constraint) by scanning the conformal equivalence class of spatial metrics for a solution of the Hamiltonian constraint, exploiting the fact that, in a particular foliation (CMC), the transverse nature of the momentum field is preserved under conformal transformations. This method a
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Rao, Prasada. Welfare Comparisons with Heterogeneous Prices, Consumption, and Preferences. Edited by Matthew D. Adler and Marc Fleurbaey. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199325818.013.25.

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The chapter provides an overview of the methods and techniques employed by economic statisticians in compiling measures of real expenditure for use in making temporal and spatial comparisons of economic welfare. The role of money-metric utility in making price and welfare comparisons is explored. Temporal measures of price change based on the Konus cost-of-living index and the associated measures of welfare change for individuals and groups of individuals are discussed. Links between the commonly used Laspeyres, Paasche, Fisher, and Tornqvist index numbers and the Konus index-based measures of
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Schreiner, Christopher S. Processing and representing categorical and metric spatial relations in large-scale environments. 1997.

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Lefroy, Ted, Allan Curtis, Anthony Jakeman, and James McKee, eds. Landscape Logic. CSIRO Publishing, 2012. http://dx.doi.org/10.1071/9780643103559.

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In 2005, researchers from four Australian universities and CSIRO joined forces with environmental managers from three state agencies and six regional catchment management authorities to answer the question: 'Can we detect the influence of public environmental programs on the condition of our natural resources?' This was prompted by a series of national audits of Australia's environmental programs that could find no evidence of public investment improving the condition of waterways, soils and native vegetation, despite major public programs investing more than $4.2 billion in environmental repa
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Wittman, David M. Spacetime Geometry. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199658633.003.0011.

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This chapter shows that the counterintuitive aspects of special relativity are due to the geometry of spacetime. We begin by showing, in the familiar context of plane geometry, how a metric equation separates frame‐dependent quantities from invariant ones. The components of a displacement vector depend on the coordinate system you choose, but its magnitude (the distance between two points, which is more physically meaningful) is invariant. Similarly, space and time components of a spacetime displacement are frame‐dependent, but the magnitude (proper time) is invariant and more physically meani
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Malawey, Victoria. A Blaze of Light in Every Word. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190052201.001.0001.

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A Blaze of Light in Every Word presents a conceptual model for analyzing vocal delivery in popular song recordings focused on three overlapping areas of inquiry: pitch, prosody, and quality. The domain of pitch, which refers to listeners’ perceptions of frequency, considers range, tessitura, intonation, and registration. Prosody, the pacing and flow of delivery, comprises phrasing, metric placement, motility, embellishment, and consonantal articulation. Qualitative elements include timbre, phonation, onset, resonance, clarity, paralinguistic effects, and loudness. Intersecting all three domain
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Book chapters on the topic "Spatial metrics"

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Grasl, Thomas, and Athanassios Economou. "Spatial Similarity Metrics." In Computer-Aided Architectural Design Futures (CAADFutures) 2007. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6528-6_19.

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Guan, Chenghe. "Spatial metrics of urban form." In Vertical Urbanism. Routledge, 2018. http://dx.doi.org/10.4324/9781351206839-14.

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García-Álvarez, David, and Martin Paegelow. "Spatial Metrics to Validate Land Use Cover Maps." In Land Use Cover Datasets and Validation Tools. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-90998-7_11.

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AbstractWhen validating Land Use Cover (LUC) products, pattern analysis can be used to assess the agreement between the patterns of two maps. It therefore complements other methods and techniques that focus exclusively on the quantity (proportions) and allocation agreement between the categories. Spatial metrics are the first step for any analysis of the patterns of categorical maps. With the wide range of spatial metrics available, it is possible to fully characterize the pattern of any map. It can also be characterized in greater detail using other more complex techniques, as explained in th
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Gazzelloni, Federica. "Spatial Data Modelling and Visualisation." In Health Metrics and the Spread of Infectious Diseases. Chapman and Hall/CRC, 2025. https://doi.org/10.1201/9781032625935-12.

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Zhao, Yaolong, and Yuji Murayama. "Urban Dynamics Analysis Using Spatial Metrics Geosimulation." In Spatial Analysis and Modeling in Geographical Transformation Process. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0671-2_10.

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Rockcastle, Siobhan, and Marilyne Andersen. "Application of New Metrics to Abstract Spatial Models." In Annual Dynamics of Daylight Variability and Contrast. Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5233-0_5.

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Iop, Alessandro, Olga Viberg, Adrian Elmi-Terander, Erik Edström, and Mario Romero. "On Extended Reality Objective Performance Metrics for Neurosurgical Training." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-42682-7_44.

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AbstractThe adoption of Extended Reality (XR) technologies for supporting learning processes is an increasingly popular research topic for a wide variety of domains, including medical education. Currently, within this community, the metrics applied to quantify the potential impact these technologies have on procedural knowledge acquisition are inconsistent. This paper proposes a practical definition of standard metrics for the learning goals in the application of XR to surgical training. Their value in the context of previous research in neurosurgical training is also discussed. Objective metr
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Sharmiladevi, S., and S. Siva Sathya. "Evaluation Metrics of Spatial and Spatiotemporal Data Mining Techniques." In Emerging Technologies in Data Mining and Information Security. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9774-9_42.

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Mancini, Gianluca, Daniele Ventura, Edoardo Casoli, Andrea Belluscio, and Giandomenico Ardizzone. "Colonization of transplanted Posidonia Oceanica: understanding the spatial dynamics through high-spatial resolution underwater photomosaics." In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”. Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.68.

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Following the restoration of a P. oceanica meadow impacted by the Concordia shipwreck, we investigated the spatial dynamic of the most important and protected Mediterranean endemic seagrass over a two-year period applying three spatial metrics: number of patches, mean patch size and total cover. By means of underwater photomosaics, we noticed a diminution in the number of patches in favour of the mean size and total cover. The outcomes showed that, under suitable environmental conditions, P. oceanica colonizes rapidly the dead matte substrate.
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Biancardi, Alberto M., and Jim M. Wild. "New Disagreement Metrics Incorporating Spatial Detail – Applications to Lung Imaging." In Communications in Computer and Information Science. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60964-5_70.

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Conference papers on the topic "Spatial metrics"

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Biyyala, Varun, Bharat Chanderprakash Kathuria, Jialu Li, and Youshan Zhang. "SST-EM: Advanced Metrics for Evaluating Semantic, Spatial and Temporal Aspects in Video Editing." In 2025 IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW). IEEE, 2025. https://doi.org/10.1109/wacvw65960.2025.00032.

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Brown, Daniel, and Roberto Celi. "Effects of Contrast and Spatial Frequency on Idealized Compensatory Tasks." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9511.

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The paper describes a series of experiments to quantify the effects of loss of contrast on highly-idealized, compensatory piloting tasks. The effects of spatial frequency are simultaneously studied via the Modulation Transfer Function (MTF). The MTF can quantify the contrast and spatial frequency (relative size) of the objects that provide visual cues necessary for closing pilot control loops. A brief analysis is also performed on different input devices and their effects on task performance. The results show compensatory task performance can be modeled with multiple MTFs, each representing a
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Prasanth, S. Ravi, T. K. Senthamizh, K. Arun Prasad, and Sulochana Shekhar. "Analyzing the Spatio-Temporal Dynamics and Micro-Level Spatial Metrics of Coastal Aquaculture in the Cauvery Delta Using Sentinel-1 Time Series Data." In 2024 IEEE India Geoscience and Remote Sensing Symposium (InGARSS). IEEE, 2024. https://doi.org/10.1109/ingarss61818.2024.10984003.

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Yang, Chunting, Lian Zhao, and Zaiyi Liao. "Spatial-Temporal Distortion Metrics for Video." In 2009 WRI World Congress on Computer Science and Information Engineering. IEEE, 2009. http://dx.doi.org/10.1109/csie.2009.606.

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Baxter, Donald, Frédéric Cao, Henrik Eliasson, and Jonathan Phillips. "Development of the I3A CPIQ spatial metrics." In IS&T/SPIE Electronic Imaging, edited by Frans Gaykema and Peter D. Burns. SPIE, 2012. http://dx.doi.org/10.1117/12.905752.

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Lima, Antonio, and Mirco Musolesi. "Spatial dissemination metrics for location-based social networks." In the 2012 ACM Conference. ACM Press, 2012. http://dx.doi.org/10.1145/2370216.2370429.

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Nancel, Mathieu, Daniel Vogel, Bruno De Araujo, Ricardo Jota, and Géry Casiez. "Next-Point Prediction Metrics for Perceived Spatial Errors." In UIST '16: The 29th Annual ACM Symposium on User Interface Software and Technology. ACM, 2016. http://dx.doi.org/10.1145/2984511.2984590.

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Zhang, Qianghui, Junjie Wu, Zhongyu Li, Yulin Huang, Jianyu Yang, and Haiguang Yang. "On the spatial resolution metrics of bistatic SAR." In 2016 CIE International Conference on Radar (RADAR). IEEE, 2016. http://dx.doi.org/10.1109/radar.2016.8059319.

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Žefran, Miloš, Vijay Kumar, and Christopher Croke. "Choice of Riemannian Metrics for Rigid Body Kinematics." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1148.

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Abstract The set of spatial rigid body motions forms a Lie group known as the special Euclidean group in three dimensions, SE(3). Chasles’s theorem states that there exists a screw motion between two arbitrary elements of SE(3). In this paper we investigate whether there exist a Riemannian metric whose geodesics are screw motions. We prove that no Riemannian metric with such geodesics exists and we show that the metrics whose geodesics are screw motions form a two-parameter family of semi-Riemannian metrics.
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Swenson, Nigel, Garrett Scott, Peter Bloch, et al. "Improving Grasp Classification through Spatial Metrics Available from Sensors." In 2021 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2021. http://dx.doi.org/10.1109/icra48506.2021.9561750.

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Reports on the topic "Spatial metrics"

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Morton, A., and E. Stephan. Spatial Composition of Metrics. RFC Editor, 2011. http://dx.doi.org/10.17487/rfc6049.

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Stephan, E., L. Liang, and A. Morton. IP Performance Metrics (IPPM): Spatial and Multicast. RFC Editor, 2009. http://dx.doi.org/10.17487/rfc5644.

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Runion, Kyle, Safra Altman, and Elizabeth Murray. Analytic methods for establishing restoration trajectories. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45562.

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This special report identifies metrics (standard and novel) and analytic approaches to developing trajectories and then describes the conceptual process of using those metrics and approaches to develop restoration trajectories to inform adaptive management in salt-marsh systems. We identify the composite time series trajectory (CTST) approach, in which metrics are measured from restoration sites of different ages within a small spatial range, and the retrospective single-site trajectory (RSST) approach, in which the same restoration metrics are measured over time at one restoration site. In al
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Newmark, Gregory L. Assessing GTFS Accuracy. Mineta Transportation Institute, 2024. http://dx.doi.org/10.31979/mti.2024.2017.

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The promised benefits of the General Transit Feed Specification (GTFS) Schedule and Realtime standards are dependent on the underlying quality of the data. Despite this fundamental reliance, there has been relatively little research on techniques and strategies to assess GTFS accuracy. The need for such assessment is growing as federal and state governments increasingly require transit agencies to make these data available to the public. This research fills this gap by presenting a suite of methods and metrics to assess the temporal accuracy of GTFS Realtime and the spatial accuracy of GTFS Sc
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Go, Eugenia, Kentaro Nakajima, Yasuyuki Sawada, and Kiyoshi Taniguchi. On the Use of Satellite-Based Vehicle Flows Data to Assess Local Economic Activity: The Case of Philippine Cities. Asian Development Bank, 2022. http://dx.doi.org/10.22617/wps220079-2.

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Satellite image-derived vehicle counts were used to measure local economic activity following the opening of the new terminal at the Mactan-Cebu International Airport in the Philippines. Results reveal that the terminal’s opening has had positive impacts on Cebu’s local economy. A comparison of the vehicle count measure with luminosity-derived metrics suggests that the former is better at capturing seasonal and spatial variations in treatment effects, especially for beach tourism activities in Cebu.
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Mathew, Jijo K., Haydn Malackowski, Yerassyl Koshan, et al. Development of Latitude/Longitude (and Route/Milepost) Model for Positioning Traffic Management Cameras. Purdue University, 2024. http://dx.doi.org/10.5703/1288284317720.

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Traffic Incident Management (TIM) is a FHWA Every Day Counts initiative with the objective of reducing secondary crashes, improving travel reliability, and ensuring the safety of responders. Agency roadside cameras play a critical role in TIM by helping dispatchers quickly identify the precise location of incidents when receiving reports from motorists with varying levels of spatial accuracy. Reconciling position reports that are often mile-marker based with cameras that operate in a Pan-Tilt-Zoom (PTZ) coordinate system relies on dispatchers having detailed knowledge of hundreds of cameras an
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Theel, Heather, Molly Reif, Jo Ellen Hinck, et al. Restoration monitoring metric framework: integrating innovative remote-sensing technologies : comparisons between field and remotely sensed vegetation surveys of restored forested and grassland sites in Ohio. Engineer Research and Development Center (U.S.), 2024. https://doi.org/10.21079/11681/49490.

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Restoration monitoring is generally perceived as costly and time-consuming, yet the concept of universal restoration monitoring metrics is trending for evaluation of restoration performance across spatial scales, project boundaries, and jurisdictions. Natural Resource Damage Assessment and Restoration (NRDAR) practitioners seek to restore natural resources injured by oil spills or hazardous substance releases into the environment. Therefore, a multiagency team [US Army Engineer Research and Development Center (ERDC), US Department of the Interior (DOI), and US Department of Energy (DOE)] devel
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Harris, Aubrey, Jonathan AuBuchon, and Michael Porter. Comparing ecological models for assessing Rio Grande silvery minnow response to environmental flows. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48593.

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The proliferation of continuous streamflow monitoring and spatial data suitable for hydraulic modeling is increasing opportunities to use hydraulic habitat analysis to inform ecological models. However, species population and streamflow data exhibit high variability, making it challenging to identify hydrologic and hydraulic metrics that effectively correlate with ecological outcomes. Metric selection presents a challenge for informing environmental flow decisions and adaptive management of water infrastructure. This study applies models to characterize environmental flows with in-creasing mod
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Fassnacht, Steven, Kazuyoshi Suzuki, Jessica Sanow, et al. Snow surface roughness across spatio-temporal scales. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49199.

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The snow surface is at the interface between the atmosphere and Earth. The surface of the snowpack changes due to its interaction with precipitation, wind, humidity, short- and long-wave radiation, underlying terrain characteristics, and land cover. These connections create a dynamic snow surface that impacts the energy and mass balance of the snowpack, blowing snow potential, and other snowpack processes. Despite this, the snow surface is generally considered a constant parameter in many Earth system models. Data from the National Aeronautics and Space Administration (NASA) Cold Land Processe
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Saltus, Christina, Richard Johansen, Molly Reif, Weston Nowlin, Benjamin Schwartz, and Joshuah Perkins. Next Generation Ecological Models - Central Texas Watersheds: Geospatial Layers and Related Tables. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47608.

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Relevant geospatial data layers are required for developing next generation ecological response models for specific reaches of 5 rivers in Central Texas: Colorado, Concho, San Saba, Llano, and Pedernales Rivers. Therefore, a collaborative effort between Engineer Research and Development Center (ERDC), Texas State University, and Texas A&M University was undertaken to acquire and curate a collection of biological and physical datasets to be utilized as inputs for next generation ecological response models at various spatial scales (watershed, river buffer, and point). The objective was to a
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