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  1. Sep 11, 2021 · Image courtesy of Ricky Flores at The Journal News, taken 11 September 2001. The events of September 11, 2001 are as fresh in this author’s mind as they were twenty years ago, watching in real time with high school classmates as United Airlines Flight 175 slammed into the World Trade Center’s South Tower.

  2. Sep 08, 2021 · Geomorphology is the study of the nature and history of landforms and the processes which create them. Initially, the subject was committed to unravelling the history of landform development, but to this evolutionary approach has been added a drive to understand the way in which geomorphological processes operate.

    • Lucinda M. Hall
    • 2011
  3. Sep 02, 2021 · The U.S. government’s analysis of non-state armed actors’ capabilities should become more holistic: Policymakers and officials should recognize that such actors often develop military and political institutions that leverage the physical and human terrain in countries where complicated civil wars are being fought.

  4. Aug 26, 2021 · Our Human Terrain Team (HTT AF07) conducted socio-cultural research by directly interacting with Afghans to understand their perceptions, motivations, interests and grievances. HTT AF07’s research provided analysis for the U.S. Marine Corps’ combatant commanders to make better operational and strategic decisions to stabilize and improve the ...

  5. › wiki › Spatial_data_analysisSpatial analysis - Wikipedia

    • History
    • Fundamental Issues
    • Types
    • Geospatial Analysis
    • See Also
    • Further Reading
    • External Links

    Spatial analysis began with early attempts at cartography and surveying. Land surveying goes back to at least 1,400 B.C in Egypt: the dimensions of taxable land plots were measured with measuring ropes and plumb bobs. b. Many fields have contributed to its rise in modern form. Biology contributed through botanical studies of global plant distributions and local plant locations, ethological studies of animal movement, landscape ecological studies of vegetation blocks, ecological studies of spatial population dynamics, and the study of biogeography. Epidemiology contributed with early work on disease mapping, notably John Snow's work of mapping an outbreak of cholera, with research on mapping the spread of disease and with location studies for health care delivery. Statistics has contributed greatly through work in spatial statistics. Economics has contributed notably through spatial econometrics. Geographic information system is currently a major contributor due to the importance of...

    Spatial analysis confronts many fundamental issues in the definition of its objects of study, in the construction of the analytic operations to be used, in the use of computers for analysis, in the limitations and particularities of the analyses which are known, and in the presentation of analytic results. Many of these issues are active subjects of modern research. Common errors often arise in spatial analysis, some due to the mathematics of space, some due to the particular ways data are presented spatially, some due to the tools which are available. Census data, because it protects individual privacy by aggregating data into local units, raises a number of statistical issues. The fractal nature of coastline makes precise measurements of its length difficult if not impossible. A computer software fitting straight lines to the curve of a coastline, can easily calculate the lengths of the lines which it defines. However these straight lines may have no inherent meaning in the real w...

    Spatial data analysis

    Urban and Regional Studies deal with large tables of spatial data obtained from censuses and surveys. It is necessary to simplify the huge amount of detailed information in order to extract the main trends. Multivariable analysis (or Factor analysis, FA) allows a change of variables, transforming the many variables of the census, usually correlated between themselves, into fewer independent "Factors" or "Principal Components" which are, actually, the eigenvectorsof the data correlation matrix...

    Spatial autocorrelation

    Spatial autocorrelation statistics measure and analyze the degree of dependency among observations in a geographic space. Classic spatial autocorrelation statistics include Moran's I {\\displaystyle I} , Geary's C {\\displaystyle C} , Getis's G {\\displaystyle G} and the standard deviational ellipse. These statistics require measuring a spatial weights matrix that reflects the intensity of the geographic relationship between observations in a neighborhood, e.g., the distances between neighbors,...

    Spatial stratified heterogeneity

    Spatial stratified heterogeneity, referring to the within-strata variance less than the between strata-variance, is ubiquitous in ecological phenomena, such as ecological zones and many ecological variables. Spatial stratified heterogeneity of an attribute can be measured by geographical detector q-statistic: where a population is partitioned into h = 1, ..., L strata; N stands for the size of the population, σ2 stands for variance of the attribute. The value of q is within [0, 1], 0 indicate...

    Geospatial analysis, or just spatial analysis, is an approach to applying statistical analysis and other analytic techniques to data which has a geographical or spatial aspect. Such analysis would typically employ software capable of rendering maps processing spatial data, and applying analytical methods to terrestrial or geographic datasets, including the use of geographic information systems and geomatics.

    General topics
    Specific applications
    Abler, R., J. Adams, and P. Gould (1971) Spatial Organization–The Geographer's View of the World, Englewood Cliffs, NJ: Prentice-Hall.
    Anselin, L. (1995) "Local indicators of spatial association – LISA". Geographical Analysis, 27, 93–115.
    Awange, Joseph; Paláncz, Béla (2016). Geospatial Algebraic Computations, Theory and Applications, Third Edition. New York: Springer. ISBN 978-3319254630.
    Banerjee, Sudipto; Carlin, Bradley P.; Gelfand, Alan E. (2014), Hierarchical Modeling and Analysis for Spatial Data, Second Edition, Monographs on Statistics and Applied Probability (2nd ed.), Chap...
  6. Aug 24, 2021 · In this special Newlines Institute Contours podcast, Iraq experts Rasha Al-Aqeedi, Caroline Rose, and Contours host Nicholas Heras discuss Iraqi Prime Minister Mustafa al-Kadhimi’s visit to Washington to meet President Joe Biden and what al-Kadhimi’s trip means for the dynamics inside Iraq and for U.S policy on Iraq. July 28, 2021. by ...

  7. Sep 07, 2021 · New and Retired Training Options. The Training catalog houses the most authoritative collection of ArcGIS learning resources available. To ensure the quality of this collection, we add new content regularly and remove out-of-date content. The information below is provided to help you make the most of your learning time. The training options ...

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