Articles tagged with Data Sets
The new data set contains the brightness histories of two hundred million stars and other objects, incorporating over 20 billion independent measurements. This extensive dataset enables numerous studies by the astronomical community.
A new study by Columbia Business School researchers found that retailer characteristics, not individual stores, explain variation in price dynamics. The analysis used millions of price observations to document high-frequency price movements across stores and chains.
Researchers have developed a tool called Maximal Information Coefficient (MIC) that can uncover patterns in large data sets. MIC can tease out recurring events or sets of data hidden in health information, the changing bacterial landscape of the gut, and statistics from competitive sports.
Researchers developed a tool called MINE that can detect multiple patterns hidden in health information, baseball statistics, and more. It analyzes large data sets with great speed, identifying relationships and ranking them in an equitable way.
Researchers developed a tool called MINE that can detect multiple patterns in large data sets, including health information, baseball statistics, and bacterial landscapes. The tool identifies relationships in a way that no other software program can, offering tremendous exploratory potential.
Researchers analyzed five global temperature data sets and found that after removing short-term fluctuations, all five data sets showed excellent agreement, indicating that global warming is not slowing down. The study suggests that temperatures will continue to rise, emphasizing the urgency of addressing human influence on climate.
A new 'Data Paper' workflow has been pioneered by GBIF and Pensoft publishers to provide incentives for data compilers. The first-ever peer-reviewed paper derived directly from a biodiversity metadata document is published in the ZooKeys journal.
Researchers at Ruhr-University Bochum developed a new method to calculate the probability of extreme events in finance. The traditional approach ignores the bulk of the relevant data, which can lead to important information being lost. By using this new method, scientists can better predict such events and improve financial models.
Researchers have assembled a comprehensive data set to reconstruct the phylogeny of mollusks, revealing a close relationship between snails and mussels. The study confirms an old hypothesis that molluscs are divided into two subphyla, but with unexpected results, including the sister taxa status of snails and mussels.
Researchers create detection tool that spots flight glitches without prior knowledge of parameters to check. The technique uses cluster analysis to identify abnormal flights, allowing analysts to further inspect reports and prevent potential accidents.
Frequent visual field testing in patients with primary open-angle glaucoma may lead to earlier detection of the condition's progression, according to a study published in Archives of Ophthalmology. The researchers found that twice-yearly schedules resulted in earlier detection compared to yearly schedules.
A team of statisticians from Duke University received a $3 million grant to develop statistical methods for making US Census Bureau data available to researchers and the public. The Triangle Census Research Network will preserve anonymity while improving data quality and linking it to related sources.
A study in JAMA found that stress cardiomyopathy (SC) affects postmenopausal women primarily, but also younger patients, men, and those without an identifiable stressful trigger. CMR imaging identified specific criteria for diagnosis, which showed complete normalization of LV function after follow-up imaging.
The GigaScience journal and database launch provides a platform for the open release of large-scale biological datasets, including those from the deadly E. coli O104 outbreak and endangered species like polar bears. This initiative aims to accelerate scientific discovery by enabling rapid data sharing and reuse.
Researchers analyzed over 345,000 bird capture records to assess the risk of injury or mortality from mist netting. Frequently captured birds were found to be less at risk than those captured infrequently due to established adulthood and territory ownership.
A new themed issue of Geosphere delves into the geology and tectonic history of northern San Francisco Bay region, featuring studies on sedimentary and volcanic deposits cut by active strike-slip faults. The papers provide insights into groundwater hydrology, seismic hazard, and plate margin evolution.
A study published in Addiction journal finds that even low levels of blood-alcohol content are associated with severe injuries and death. The research suggests that buzzed drivers are more likely to speed, be improperly seat-belted, and drive at greater speeds, leading to increased accident severity.
The National Biomass and Carbon Dataset (NBCD) provides unprecedented spatial resolution of 30m, offering comprehensive assessment of forest structure and carbon stock within the lower 48 States. This dataset will advance understanding of US natural resources, biodiversity conservation, wildfire risk assessment, and timber production.
The LRO mission has released a comprehensive collection of data, including global maps with resolutions as low as 100 meters per pixel. The dataset includes more than 192 terabytes of raw information, equivalent to approximately 41,000 typical DVDs.
The CDC has partnered with IHME to make its reproductive health survey data available worldwide, covering topics such as pregnancies, births, and contraceptive use in over 30 countries. This move aims to improve population health by providing high-quality evidence for health policy decisions.
ChesapeakeView consolidates various datasets on land use, habitat changes, and biodiversity for research and planning purposes. The project makes these datasets available to the public via its website.
A new study reveals a shift in biomes in Alaska caused by a warming climate, with patterns supporting current hypotheses of increased evergreen forest growth at tundra margins and declining productivity at temperate forest edges. The findings provide a regional picture of forest productivity that did not previously exist.
The 20th Century Reanalysis Project has created a comprehensive reanalysis of global weather events from 1871 to the present day. The dataset provides key historical comparisons for our own changing climate, allowing researchers to understand the impact of extreme weather and climate events over time.
A CCNY-led interdisciplinary team recreated colonial hydrology by synthesizing historical records with present-day data. The study identifies broad hydrologic trends for the northeastern US between 1600 and 1800, highlighting the impact of human factors on waterways.
Researchers found a high rate of weight gain in animal populations, despite varying diets and activity levels. The study suggests that alternative causes, such as epigenetics, may contribute to the obesity epidemic.
Researchers have developed an improved tool for translating lizard body lengths to weights, enabling the evaluation of species health and ecosystem condition. The method, based on empirical evidence, can predict weights of lizards in a reliable and standardized manner.
A new study finds that climate change mitigation will not quickly return the hydrological cycle to its previous state. In contrast, data on tropical cyclone activity disagree, with some datasets showing an increase in storms and others not.
Research features standardized approaches to measure and compare tumor size in lung cancer. The use of precise quantitation tools may allow for more rapid evaluation of the success or failure of drug candidates in clinical trials.
The new Keck website demonstrates advances in digital mapping by providing a customizable interface for users to access various data sets. The site combines ArcGIS Server and Google maps, offering an intuitive way to access data, and is significantly faster than comparable searches, returning results five to six times faster.
The PARASOL satellite has been maneuvered to leave its position within the A-Train constellation, a group of five NASA satellites orbiting the Earth in close proximity. The move will enable data sharing with other satellites while leaving a temporary data gap that will be filled by Glory's launch in 2010.
The team's analysis reveals a unique hominid skeleton with well-preserved pelvic and foot bones, providing insights into Ardi's locomotion and brain size. The discovery sheds new light on human ancestry, challenging previous assumptions about early human relatives.
A large-scale analysis of 1.3 million US citizens revealed a close correlation between people's subjective life-satisfaction scores and objectively estimated quality of life, using data from the Behavioral Risk Factor Surveillance System and environmental indicators.
A new pan-tropical forest mapping initiative, launched at COP15, aims to provide accurate data on forest cover and carbon stocks. The project combines satellite and lidar data from NASA and JAXA, enabling countries to build robust national carbon accounting systems.
The Sea Education Association (SEA) is conducting an expedition to measure plastic marine debris in the North Atlantic Ocean. The trip will explore an area southeast of Bermuda, where large concentrations of plastic debris have been observed, similar to the Great Pacific Garbage Patch.
Researchers at Michigan Technological University have identified three genes linked to sporadic ALS, a type of neuromuscular disorder. The discovery provides valuable insights into the genetic basis of the disease and may lead to the development of new treatments or a potential cure.
Researchers developed computer models to classify injury reports based on specific words or phrases, identifying key causes of injuries. The models achieved high accuracy rates, comparable to human coders, and have the potential to lead to automated report coding programs.
The University of Kentucky Center for Public Health Systems and Services Research has received a $600,000 grant to create an integrated dataset that will provide researchers with access to critical information to inform translational practice decisions. The dataset will combine survey data from various organizations, enabling users to ...
The new short film 'Return to the Moon' showcases NASA's legacy of lunar exploration using data from the Apollo and LRO missions. The film features a six-foot sphere displaying stunning imagery, allowing viewers to witness the moon's surface and understand the rationale for returning to it.
A team led by Livermore scientists has reconciled the differences between simulated and observed temperature trends in the tropics. They applied a modified statistical test to account for uncertainty in observational data and found no fundamental discrepancy between modeled and observed trends. This reconciliation is thanks to the use ...
Scientists have released the first national biomass and carbon dataset, which provides high-resolution estimates of forest biomass and carbon stock. The dataset, known as NBCD2000, is being made available for download on a zone-by-zone basis and offers valuable information for quantifying the carbon stock in U.S. forests.
Research on online dating site HOTorNOT.com reveals that people tend to date those who match their level of physical attractiveness. More attractive individuals prioritize physical attraction in potential dates, while less attractive individuals place greater emphasis on other qualities.
Researchers use Google Sets to provide contextual information that improves the accuracy of automated image labeling systems. The system uses a three-step process, including image segmentation, ranked lists of probable labels, and post-processing context checks.
The AERA report helps researchers understand causal estimation methods and their applications in large-scale databases. It addresses key issues in selecting research designs for drawing valid causal inferences about treatment effects.
Scientists at the Woods Hole Research Center are expanding a two-year pilot phase to create a national biomass and carbon dataset for US forests. The dataset will improve current methods of determining carbon flux between vegetation and the atmosphere.
Men do not adopt a 'female model' of parenthood with part-time work and high levels of child care. Fathers prioritize flexible work arrangements to accommodate family life, rather than reducing their working hours. Current policies may not address fathers' needs for adaptability.
Researchers generate high-resolution dataset of vegetation canopy height, aboveground biomass, and carbon stocks for the US in 2000. The dataset will enable unprecedented quantification of biomass and carbon stocks, improving studies on climate interactions, forest fire mitigation, and wildlife habitat characterization.
Researchers successfully tested a new coast-to-coast, 10-Gigabit per second Ethernet cyber backplane connecting NASA's Goddard center to UCSD. The system enabled complex scientific analysis and visualization of large data sets remotely.
Researchers can analyze patient demographics, clinical data, and gene expression using the online toolbox. The platform enables integrated analysis of diverse data sets, potentially leading to better disease diagnosis and treatment outcomes.
The American Geosciences Institute (AGI) has partnered with the USGS to provide a Global GIS DVD-ROM, which offers datasets of historical seismicity, topography, and other geospatial information. This database is being distributed to disaster teams to aid in tsunami relief efforts.
A new project aims to produce software that can discover, visualize, and explore patterns in large collections of full-text humanities resources. The goal is to make these collections more useful for research and teaching.
A new statistical technique called wavelet bootstrapping enables researchers to extract meaningful information from a single data run by applying re-sampling methods in the wavelet domain. This technique has applications in geophysical sciences, bioinformatics, and medical imaging, among others.
A recent study by Ohio State University found that only about 40% of cohabiting couples eventually get married. The research also discovered that men with high economic prospects and similar couples were not more likely to tie the knot than others. In fact, consensus regarding marriage plans was a key predictor of whether cohabiting co...
The GRAM program combines data sets on gene regulatory pathways and messenger RNA levels to determine causal relationships between regulators and genes. By processing these data sets together, researchers can identify regulators that switch genes on or off across the entire genome.
A study by The Commonwealth Fund found that children in Medicaid managed care receive significantly lower rates for clinical quality indicators, including childhood immunizations and well-child visits. High-performing plans with both commercial and Medicaid enrollees were able to achieve high HEDIS performance measures.
A NASA study has found a significant increase in solar radiation over the past 24 years, which could contribute to global climate change. The trend is comparable to one previously reported by the Intergovernmental Panel on Climate Change and may have been present throughout the 20th century.
The Sandia hardware allows large data sets to be viewed and manipulated interactively without needing to send copies to separate locations. The technology, which leverages advances in 3D commercial rendering, enables users to experience sitting at a supercomputer from thousands of miles away.
The Georgia Tech/Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model accurately reproduces short-term and long-term variations in dust concentrations and distributions. The model provides five-day dust forecasts to warn people with respiratory problems and fisheries about potential red tides.
A new study by O.R. researchers found that the value of the dollar significantly impacts a company's decision on whether to export or invest in foreign production facilities. In depreciated currencies, strong exports favor the choice of ownership structure, while appreciated currencies favor investments in overseas production.
Satellite data confirms that plant life above 40 degrees north latitude has been growing more vigorously since 1981, with Eurasia showing more pronounced greening than North America. The existing vegetation has increased in density, but the area of vegetation has not extended.