Open Data Network

Food Insecurity by Supervisorial Districts

2014 Top 10 Indicators by Supervisorial District (Data Yr 2012)

Libraries ACT - Announcements

Announcements from the ACT Library Service. This data is provided as an RSS feed.

Maturing the TRL of a Complete CDEX Dating Instrument

Science goals We have developed an instrument to assess and revise the history of the inner solar system, search for organics, and reveal the history of habitability called “the Chemistry and Dating EXperiment" (CDEX) instrument. The CDEX instrument is uniquely able to map microscopic chemical and organic context of a sample, while simultaneously determining age. The instrument measures rubidium-strontium (Rb-Sr) isotopes using laser ablation resonance ionization mass spectrometry (LA-RI-MS) for isobar free elemental separation. The RI lasers can be turned off to assess chemistry in LA-MS mode, or organics in two-step laser MS mode. This instrument was the basis for Discovery and Mars 2020 proposals, and planning is underway for future Discovery and New Frontiers opportunities. This proposal specifically addresses instrument TRL deficiencies identified under these earlier flight proposals, and will improve the TRL of the integrated instrument from 4 to 5-6. Methodology This proposal focuses on 1) development of a Rb fiber laser, 2) development of a sample gripper and grinder subsystems, and 3) integration and validation of a complete TRL 5-6 CDEX instrument. Specifically, based on our successful development of Sr and ablation lasers under a 2014 NASA MatISSE, we will produce a Rb RI fiber laser subsystem, raising the laser subsystem TRL from 4 to 5-6. The fiber laser design, built in partnership with Aerospace Corporation, improves on the solid-state laser system we built earlier by reducing input power by 50%, increasing output power by 4X, reducing mass by 3X, and reducing optical interfaces by 10X. Reducing the number of optical interfaces is crucial to reducing alignment and contamination requirements. The Rb laser will then be tested and integrated with the existing Sr and ablation lasers subsystems, along with a contributed TRL 6-9 flight spare mass spectrometer from the University of Bern. The integrated CDEX will be lifetime tested in relevant environments at SwRI, and validated by repeating existing benchtop measurements. Sample handling for the instrument will be demonstrated, including development and testing of a sample gripper and grinder, followed by verification measurement on CDEX. The gripper and grinder development adapts existing high TRL technologies from MDA and HoneyBee Robotics to the CDEX instrument. Finally, we will continue our ongoing sample benchtop measurement campaign, expanding the suite of successful demonstration measurements, thereby raising the maturity of the LARIMS dating method. Proposal objectives 1) Define flight requirements, environments, and interfaces; 2) Develop, build, environmentally test, and validate a Rb fiber-laser subsystem; 3) Integrate all three lasers (Rb, Sr, and ablation) with a miniature mass spectrometer; 4) Verify and validate instrument performance; 5) Perform lifetime and lunar environmental testing; 6) Validate sample handling, including a gripper, grinder, and docking interface; 7) Build scientific support through ongoing bench-top dating measurements. Relevance These measurements are relevant for missions to the Moon, and Mars, as well as other inner solar system targets like Vesta. Specifically, the instrument is relevant to multiple NASA goals, such as: A) For Mars, the NRC Decadal Survey specifically supports: “development of instruments [including] ... in situ geochronology experiments”; B) MEPAG Goals III.A.3-10, but especially 3, specifically call for “Constrain[ing] the absolute ages of major Martian crustal geologic processes... and the cratering rate. ... with both in situ and returned sample analysis...”; C) For the Moon, the NRC DS has a primary goal of: “Determin[ing] the chronology of basin-forming impacts and constrain[ing] the period of late heavy bombardment in the inner solar system, and thus address[ing] fundamental questions of inner solar system impact processes and chronology”.

Third Grader Math Proficiency by School District 2014-2015

School District Revenue by Category

Standard financial reports are highly technical and complex, making it difficult to determine the real condition of government's financial health. The information provided in this dashboard provides measurements that are easy to understand, providing a clear picture of the financial health of government in Michigan. With measurements ranging from how government is doing in addressing pension obligations to information on total revenue and expenditures, this dashboard provides key metrics for financial health.

PropertyTax Rates

Property Tax Rates by Tax Year, TaxRateArea. Loaded with current year data about October 15th.

Increase in CFS Program Participants - Department KPI

CFS provides unrestricted general operating and project support to nonprofit and tax-exempt organizations, arts & culture organizations, cultural institutions, colleges and universities, as well as units of government that produce or present ongoing arts programming open to the public. CFS contractors present programs that reflect the cultural diversity of the County, captures the imagination of adults, families and youth, invigorate neighborhood growth, support economic development and provides jobs. This performance measure tracks the percentage growth in Contracts for Services (CFS) program participation. The measure captures the CFS programs ability to attract new applications from non-profits arts organizations and individual artists. (2019)

2015 San Diego Demographics - School Enrollment and Educational Attainment

School enrollment refers to those 4-18 enrolled in school. The population ages 4-18 refers to those who would be eligible for Kindergarten to 12th grade. This estimate is based on the assumption that there is an equal distribution among specific age groups. Educational Attainment refers to the highest level of education completed in terms of the highest degree or the highest level of schooling completed. Source: U.S. Census Bureau; 2011-2015 American Community Survey 5-Year Estimates, Table B14002, S1401, and DP02.

tavgM_2d_rad_Nx: MERRA 2D IAU Diagnostic, Radiation Surface and TOA, Monthly Mean 0.667 x 0.5 degree V5.2.0 (MATMNXRAD) at GES DISC

The MATMNXRAD or tavgM_2d_rad_Nx data product is the MERRA Data Assimilation System 2-Dimensional surface and TOA radiation flux that is time averaged single-level at the native resolution. It is a history file that is produced from the GCM during the corrector segment of the IAU cycle. All collections from this group are at reduced horizontal resolution. MERRA, or the Modern Era Retrospective-analysis for Research and Application, is a NASA reanalysis for the satellite era (30 years 1979-current) using the Goddard Earth Observing System Data Assimilation System Version 5 (GEOS-5 DAS). This data product contains 2-dimensional fields that do not vary during the reanalysis. The data are on the GEOS-5 native 540 x 361 grid with 0.667 degree longitude x 0.5 degree latitude resolution. Data are archived in the HDF-EOS2 (Grid) format, based on HDF4. Sign Up for the MERRA-2 Mailing List Sign up for the MERRA-2 listserv to receive announcements on the latest data information, tools and services that become available, data announcements from GMAO and more! Contact the GES DISC User Services (gsfc-help-disc@lists.nasa.gov) to be added to the list. MERRA-2 Science Data and Data Processing Questions Do you have a question about MERRA/MERRA-2? Take a look at the File Specification Document and if that doesn't answer your question, users can contact staff with questions on the data, data processing and science. Send questions to merra-questions@lists.nasa.gov.

Near Shannon Limit Low Peak Mean To Envelope Power Ratio (PMEPR) Turbo Block Coded OFDM for Space Communications Project

It is proposed to study and develop an innovative Turbo-block coded modulation scheme suitable for Orthogonal Frequency Division Modulation (OFDM) system. The new approach not only is capable of reaching the Shannon limit capacity, but it can also reduce the peak to envelope power ratio (PMEPR) of the OFDM symbols. This approach is unique since the design of high performance capacity achieving codes where all the OFDM signals produced by the codewords with low peak to average power ratio remains an extremely important, albeit a very difficult problem to solve, because a physical layer based on such codes can significantly reduce the cost of base stations. Typically, about 45% of the total cost of OFDM base stations corresponds to that of power amplifiers. This is due to the large linear region requirement of power amplifiers in these systems. OFDM transmission requires a large power amplifier linear region because of its relatively high peak to average power ratio signals. Thus OFDM power amplifiers are particularly expensive. Furthermore, reduction of PMEPR will reduce cost and power consumption for mobile units, enabling wider deployments and longer battery life.