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Global Gridded Crop Model Evaluation Tool

AbstractThe GGCMI Evaluation Tool allows users to evaluate their own model simulation results against different reference data sets at global, national and grid cell level for the four major crops maize, wheat, rice and soybean as well as against an ensemble of 14 global gridded crop models (GGCMs) … Launch Tool
  • Resource Tools

Cyberinfrastructure for the collaborative development of U2U decision support tools

This paper describes the use of cyberinfrastructure to create interactive applications as part of the Useful to Usable (U2U) project. These applications transform historical climate data, knowledge, and models into decision support tools for end users such as crop farmers, uni- versity Extension edu…
  • Resource Publications

Economic impacts of climate change on agriculture: A comparison of process-based and statistical yield models

A large number of studies have been published examining the implications of climate change for agricultural productivity that, broadly speaking, can be divided into process-based modeling and statistical approaches. Despite a general perception that results from these methods differ substantially, t…
  • Resource Publications

Flow Extent Viewer

This is a viewer to visualize stream flow extent output from the SWATFlow application. Flow Extent Viewer … Launch Tool
  • Resource Tools

PyMapLib Tutorial Tool

As a part of the NSF funded Geospatial Data Analysis Building Blocks (GABBs) project, PyMapLib is designed as a generic framework for geospatial data visualization to support scientific computation and data tools. Based on a diverse set of use cases, the primary goal of PyMapLib is to lower the barr… Launch Tool
  • Resource Tools

Start Your Own GABBs Hub in AWS

This video illustrates the use of an AWS CloudFormation template to deploy a GABBs-enabled HUBzero instance in Amazon Web Services (AWS).Using this approach, any user can be up and running with a fully featured, functional hub instance with geospatial data management, and processing and visualizatio…
  • Resource Online Presentations

PyMapLib for Rapid Development of Geospatial Data Analysis Tools

This is the presentation at CyberGIS 2016 conference introducing pyMapLib, a generic Python mapping library developed as part of the NSF funded GABBS project. This is the presentation at CyberGIS 2016 conference introducing pyMapLib, a generic Python mapping library developed as part of the NSF fund…
  • Resource Publications

2016 GABBs Project Highlights

This is a document that highlights the new development and engagement activities of the GABBs project in 2016. This DIBBs implementation project develops geospatial data analysis building blocks in the HUBzero Scientific Collaboration Platform to enable researchers and educators to create and share …
  • Resource Downloads


This is the web version of the RStudio graphical user interface. Write code, build applications, perform analysis, and visualize results just like in the desktop version. RStudio, in your browser … Launch Tool
  • Resource Tools
  • Resource Publications
  • Resource Downloads

Roller Compactor

The impact of material properties and process parameters are determined using a continuum model. Normal stresses for roller compaction are calculated from Johanson's rolling theory. The boundary between the slip and nip regions is calculated using Johanson's criterion, i.e. gradients of stress in sl… Launch Tool
  • Resource Tools

Dynamic Roller Compactor

…it becomes possible to design, optimize, and control the process based on the model.The simulator was built using Matlab. The user can vary three input variables: roll pressure, feed speed and roll speed. They can be specified as a function of time. For example, if the roll pressure is assigned as 1*step(t-3), the simulator increases the roll pressure from 1MPa to 2MPa at t = 3 min. All Matlab functions are supported for specifying the patterns of the input variables. Dynamic simulation of roller compaction for dry granulation Launch Tool
  • Resource Tools

Rotating Drum

Rotating drums have been studied in the pharmaceutical industry for a long time. Flows in rotating drums are divided into distinct regimes:Rolling regime: Powder on the surface cascades down the incline and powder at the bottom rotates with the drum.Slumping regime: Back and forth rocking motion of … Launch Tool
  • Resource Tools

Particle Adhesion

The Particle Adhesion Model simulates the van der Waals adhesion force between a particle and a substrate in a given medium for a user-specified number of interactions. The force constant is based on the composition of the particle, the substrate and the medium in which the interactions occur. The p… Launch Tool
  • Resource Tools

High Shear Mixer

Granular mixing remains an art rather than a science and is a hot research topic in adademia as well as in industry. Granular materials display wide range of behaviour ranging from poor mixing to segregation based on mixer characteristics and operating regimes. Understanding how the materials in the… Launch Tool
  • Resource Tools

Discrete Element Method (DEM) Course Module

The DEM course module was created by Carl Wassgren of the Particulate Systems Laboratory (PSL) at Purdue University. The series consists of slides and videos that will familiarize you with the basics of DEM. Discrete Element Method has been applied to analyze and predict flow behaviour in a wide var…
  • Resource Courses

Roughness models for particle adhesion

The effects of different surface roughness models on a previously developed van der Waals adhesion model were examined. The van der Waals adhesion model represented surface roughness with a distribution of hemispherical asperities. It was found that the constraints used to define the asperity distri…
  • Resource Publications

Marker Set

This tool allows the user to create marker set definition files (.ims files). These files can be viewed in iData -enabled projects. Create iData Marker Set definition files (.ims) … Launch Tool
  • Resource Tools

Using spatially explicit data to improve our understanding of land supply responses: An application to the cropland effects of global sustainable irrigation in the Americas

Land supply elasticities determine the rates of land conversion in global policy models. However, they are only available for few countries in the world. Therefore, analysts seeking to improve the spatial resolution of their models are forced to impose regionally homogeneous parameters over highly h…
  • Resource Publications

Debug Console

Close8 MBRequestSessionTimelineDatabase38Events15
Array( section => content, type => 33, terms => *, limit => 20, start => 80 ) Array(
section => content,
type => 33,
terms => *,
limit => 20,
start => 80
Array( ) Array(

Array( ) Array(

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NOMAD_ALLOC_NAME => hubzero-cms.hubzero-cms[0],
NOMAD_IP_hubzero_cms_nginx_hubzero_cms_ssl =>,
HOSTNAME => c606ebc907e4,
SHLVL => 1,
HOME => /home/www-data,
NOMAD_ALLOC_ID => 65cbe3e7-d18e-41a6-2660-5905c6cc38a8,
NOMAD_ADDR_hubzero_cms_nginx_hubzero_cms =>,
NOMAD_JOB_NAME => hubzero-cms,
NOMAD_ALLOC_DIR => /alloc,
NOMAD_PORT_hubzero_cms_nginx_hubzero_cms => 22375,
NOMAD_DC => aws-us-east-1,
NOMAD_ADDR_hubzero_cms_nginx_hubzero_cms_ssl =>,
NOMAD_PORT_hubzero_cms_nginx_hubzero_cms_ssl => 23919,
NOMAD_REGION => global,
PATH => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin,
NOMAD_TASK_NAME => hubzero-cms-php,
NOMAD_SECRETS_DIR => /secrets,
PWD => /var/www/html,
NOMAD_GROUP_NAME => hubzero-cms,
NOMAD_TASK_DIR => /local,
NOMAD_IP_hubzero_cms_nginx_hubzero_cms =>,
USER => www-data,
HTTP_FORWARDED => for=; proto=https; by=; httpproto=http/1.1; tlsver=tls12; tlscipher=0xc02f,
HTTP_ACCEPT => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,
REMOTE_PORT => 34650,
SERVER_SOFTWARE => nginx/1.15.7,
HTTPS => on,
DOCUMENT_ROOT => /srv/http/_default,
DOCUMENT_URI => /search/,
REQUEST_URI => /search/?section=content&type=33&terms=*&limit=20&start=80,
SCRIPT_NAME => /search/,
QUERY_STRING => section=content&type=33&terms=*&limit=20&start=80,
SERVER_NAME => ~(?<spoke>^[^\.]*)(\.|)(,
SCRIPT_FILENAME => /srv/http/_default/core/index.php,
PHP_SELF => /search/,
REQUEST_TIME_FLOAT => 1594502823.4488,
REQUEST_TIME => 1594502823,
argv => Array(
0 => section=content&type=33&terms=*&limit=20&start=80
argc => 1
separator .
orderBy id
orderDir asc
1 registerIP
2 access
tracker.sid 9b8580ce868cbbe018127e4f00e4a473
tracker.ssid 9b8580ce868cbbe018127e4f00e4a473
tracker.rsid 9b8580ce868cbbe018127e4f00e4a473
session.token 7c4057e46e18cbbe44474a87803db176
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  • site 0.952 seconds (+0.002); 8.00 MB (0.000) - sessionStore
8 MB

38 Queries Logged: 0.019793510437012 seconds

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      LEFT JOIN `jos_categories` AS cat
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  • onAfterInitialise Method plgSystemP3p::onAfterInitialise /core/plugins/system/p3p/p3p.php:45
  • onAfterInitialise Method plgSystemRemember::onAfterInitialise /core/plugins/system/remember/remember.php:44
  • onAfterInitialise Method plgSystemHubzero::onAfterInitialise /core/plugins/system/hubzero/hubzero.php:46
  • onAfterInitialise Method plgSystemXFeed::onAfterInitialise /core/plugins/system/xfeed/xfeed.php:46
  • onAfterInitialise Method plgSystemReferrerpolicy::onAfterInitialise /core/plugins/system/referrerpolicy/referrerpolicy.php:21
  • onAfterRoute Method plgSystemJquery::onAfterRoute /core/plugins/system/jquery/jquery.php:46
  • onAfterRoute Method plgSystemSpamjail::onAfterRoute /core/plugins/system/spamjail/spamjail.php:46
  • onAfterRoute Method plgSystemIncomplete::onAfterRoute /core/plugins/system/incomplete/incomplete.php:46
  • onAfterRoute Method plgSystemUnapproved::onAfterRoute /core/plugins/system/unapproved/unapproved.php:46
  • onAfterRoute Method plgSystemPassword::onAfterRoute /core/plugins/system/password/password.php:46
  • onGetMultiEntry Method plgHubzeroAutocompleter::onGetMultiEntry /core/plugins/hubzero/autocompleter/autocompleter.php:164
  • onAfterDispatch Method plgSystemMobile::onAfterDispatch /core/plugins/system/mobile/mobile.php:47
  • onAfterDispatch Method plgSystemDebug::onAfterDispatch /core/plugins/system/debug/debug.php:85
  • onDisplay Method plgCaptchaRecaptcha::onDisplay /core/plugins/captcha/recaptcha/recaptcha.php:98
  • onAfterRender Method plgSystemSef::onAfterRender /core/plugins/system/sef/sef.php:45