Open clusters and associations in the Gaia era
... an issue if the survey does not extend beyond the cluster tidal radius, especially if there is mass segregation as the incompleteness level will then depend on mass. Moreover, objects might be missed around bright stars due to contrast issue, in crowded regions or in area with high extinction. As fo ...
... an issue if the survey does not extend beyond the cluster tidal radius, especially if there is mass segregation as the incompleteness level will then depend on mass. Moreover, objects might be missed around bright stars due to contrast issue, in crowded regions or in area with high extinction. As fo ...
Clathrate gun hypothesis - Wikipedia, the free
... Research carried out in 2008 in the Siberian Arctic has shown millions of tons of methane being released, apparently through perforations in the seabed permafrost,[20] with concentrations in some regions reaching up to 100 times normal levels.[22][23] The excess methane has been detected in localize ...
... Research carried out in 2008 in the Siberian Arctic has shown millions of tons of methane being released, apparently through perforations in the seabed permafrost,[20] with concentrations in some regions reaching up to 100 times normal levels.[22][23] The excess methane has been detected in localize ...
GAIA A Stereoscopic Census of our Galaxy
... • Detection of 20,000- 30,000 giants to 150-200 pc e.g. 47 UMa: astrometric displacement 360 as ...
... • Detection of 20,000- 30,000 giants to 150-200 pc e.g. 47 UMa: astrometric displacement 360 as ...
Sequential Plan Recognition
... et al., 2015; Yaron et al., 2010]. There are many possible solution strategies that students can use to solve problems, and variations within each due to exploratory activities and mistakes carried out by the student. Given a set of actions performed by the student, one hypothesis may relate a given ...
... et al., 2015; Yaron et al., 2010]. There are many possible solution strategies that students can use to solve problems, and variations within each due to exploratory activities and mistakes carried out by the student. Given a set of actions performed by the student, one hypothesis may relate a given ...
The Hipparcos Star Globe Booklet - Cosmos
... reached. The challenge to overcome these limitations was met by Hipparcos. ...
... reached. The challenge to overcome these limitations was met by Hipparcos. ...
pdf of talks and poster abstracts
... degeneracy. We will end with a round table discussion that will lend well to a brainstorming session on new/novel ideas for how Gaia can contribute to the brown dwarf age problem. 14. Christiane Helling, St. Andrews University, UK ...
... degeneracy. We will end with a round table discussion that will lend well to a brainstorming session on new/novel ideas for how Gaia can contribute to the brown dwarf age problem. 14. Christiane Helling, St. Andrews University, UK ...
Lecture 25 Handout Format
... for a Mean: Example • A study was conducted of the effects of a special class designed to improve children’s verbal skills • Each child took a verbal skills test twice, before and after a three-week period in the class • X=2nd exam score – 1st exam score • If the population mean for X, E(X)=mu equal ...
... for a Mean: Example • A study was conducted of the effects of a special class designed to improve children’s verbal skills • Each child took a verbal skills test twice, before and after a three-week period in the class • X=2nd exam score – 1st exam score • If the population mean for X, E(X)=mu equal ...
STA 291
... are usually difficult ( sample size calculation ) • How to choose alpha? • If the consequences of a Type I error are very serious, then chose a smaller alpha, like 0.01. • For example, you want to find evidence that someone is guilty of a crime. • In exploratory research, often a larger probability ...
... are usually difficult ( sample size calculation ) • How to choose alpha? • If the consequences of a Type I error are very serious, then chose a smaller alpha, like 0.01. • For example, you want to find evidence that someone is guilty of a crime. • In exploratory research, often a larger probability ...
Nullifying the climate null hypothesis
... essentially that past climate variability is indistinguishable from a stochastic red-noise process, whose only regularities are those of periodic external forcing. Given such a null hypothesis, the official consensus of IPCC (1995) tilts towards a global warming effect of recent trace-gas emissions, ...
... essentially that past climate variability is indistinguishable from a stochastic red-noise process, whose only regularities are those of periodic external forcing. Given such a null hypothesis, the official consensus of IPCC (1995) tilts towards a global warming effect of recent trace-gas emissions, ...
Document
... • how do sea salt and organic particles emitted from the ocean complicate CLAW? • what about the role of increasing ocean stratification (reduction in nutrient availability and plankton growth)? • the potential for enhanced convection to loft DMS higher into the FT • the effect of ocean acidificatio ...
... • how do sea salt and organic particles emitted from the ocean complicate CLAW? • what about the role of increasing ocean stratification (reduction in nutrient availability and plankton growth)? • the potential for enhanced convection to loft DMS higher into the FT • the effect of ocean acidificatio ...
Doing Statistics for Business
... manufacturer is concerned that the bagging equipment may not be functioning properly when filling 10-oz bags. You have been asked to set up a hypothesis test that will help determine if there is a problem with the bagging equipment. What null and alternative hypothesis would you use? ...
... manufacturer is concerned that the bagging equipment may not be functioning properly when filling 10-oz bags. You have been asked to set up a hypothesis test that will help determine if there is a problem with the bagging equipment. What null and alternative hypothesis would you use? ...
Girardi
... NO. 6 Gyr old RC stars are ∼ 1.4 times more frequent than the 10-Gyr old, mainly because they leave the MS at a faster rate, and despite the IMF favouring old stars. Similar conclusions will apply to RGB stars. ...
... NO. 6 Gyr old RC stars are ∼ 1.4 times more frequent than the 10-Gyr old, mainly because they leave the MS at a faster rate, and despite the IMF favouring old stars. Similar conclusions will apply to RGB stars. ...
printer-friendly version
... atmosphere. Conversely, the residence time of carbon dioxide (CO2) is 4 years while that of methane (CH4) is 3.6 years. It does not take long to affect the atmospheric concentration of these two gases. The discussion on our evolving atmosphere is not complete without addressing the composition of Ea ...
... atmosphere. Conversely, the residence time of carbon dioxide (CO2) is 4 years while that of methane (CH4) is 3.6 years. It does not take long to affect the atmospheric concentration of these two gases. The discussion on our evolving atmosphere is not complete without addressing the composition of Ea ...
Performance Benchmark E
... atmosphere. Conversely, the residence time of carbon dioxide (CO2) is 4 years while that of methane (CH4) is 3.6 years. It does not take long to affect the atmospheric concentration of these two gases. The discussion on our evolving atmosphere is not complete without addressing the composition of Ea ...
... atmosphere. Conversely, the residence time of carbon dioxide (CO2) is 4 years while that of methane (CH4) is 3.6 years. It does not take long to affect the atmospheric concentration of these two gases. The discussion on our evolving atmosphere is not complete without addressing the composition of Ea ...
Astrometric Reference Frame Science
... astrometry because it is often difficult or impossible to find out their origin and predict their character. At the same time, these imperfections become the main concern for astrophysical research involving large sets of objects, for example, determination of the distance to the Large Magellanic Cl ...
... astrometry because it is often difficult or impossible to find out their origin and predict their character. At the same time, these imperfections become the main concern for astrophysical research involving large sets of objects, for example, determination of the distance to the Large Magellanic Cl ...
Scientific Requirements for Basic Angle Stability and Monitoring
... fraction of contaminating stars could upset this determination. For instance, it can be estimated that there are some 100 000 faint stars, mostly in the Galactic halo, that have parallaxes and proper motions below 1.5 standard errors. Their mean parallax is around 100 µas. Thus, if only 1% of these ...
... fraction of contaminating stars could upset this determination. For instance, it can be estimated that there are some 100 000 faint stars, mostly in the Galactic halo, that have parallaxes and proper motions below 1.5 standard errors. Their mean parallax is around 100 µas. Thus, if only 1% of these ...
STAT 244 MINITAB Commands for Generating Confidence Interval
... example, if α = 0.1, then you will replace 95.0 with 90.0. (b) Change the form of the alternative hypothesis by going to the Alternative: box. 6. Click OK to exit the Options window. Click OK. Performing a Test of Hypothesis for a Population Mean µ with Unknown σ 1. Click under Stat, then Basic Stat ...
... example, if α = 0.1, then you will replace 95.0 with 90.0. (b) Change the form of the alternative hypothesis by going to the Alternative: box. 6. Click OK to exit the Options window. Click OK. Performing a Test of Hypothesis for a Population Mean µ with Unknown σ 1. Click under Stat, then Basic Stat ...
Measuring Astronomical Distances
... observe a wider field of view This blind survey will get spectra for ~0.3 million galaxies in the SHELA field ...
... observe a wider field of view This blind survey will get spectra for ~0.3 million galaxies in the SHELA field ...
L #2 1 Recap from last week
... Remark 1.9. A very important point: Theorem 1.8 holds for any distribution D, even if it is degenerate. We give a brief example of the way Theorem 1.8 works: Example 1.10. Learning the class of conjunctions. Consider the problem of email spam-classification. Let H be the set of conjunctions over n b ...
... Remark 1.9. A very important point: Theorem 1.8 holds for any distribution D, even if it is degenerate. We give a brief example of the way Theorem 1.8 works: Example 1.10. Learning the class of conjunctions. Consider the problem of email spam-classification. Let H be the set of conjunctions over n b ...
SWA (Sliding Window Algorithm) V1.0 User·s Guide
... without aberration. The precision should be worth with the real PSF, but it depends on the correction used that has not been tested yet ; Magnitude precision is 0.15 mag. at 20 magnitude, and 0.3 mag. at 21. A bias can be observed from magnitude 20.5, just because it is under the detection limit : s ...
... without aberration. The precision should be worth with the real PSF, but it depends on the correction used that has not been tested yet ; Magnitude precision is 0.15 mag. at 20 magnitude, and 0.3 mag. at 21. A bias can be observed from magnitude 20.5, just because it is under the detection limit : s ...
Lecture 14: Introduction to hypothesis testing
... Estimation. What is our best guess for the process that generated the data? ...
... Estimation. What is our best guess for the process that generated the data? ...
Answering Scientific Questions
... hypothesis, this is whatever is in the second blank. • The independent variable is the experimental condition that the scientist manipulates in order to look for a response. In a standard format hypothesis, this is the thing in the second blank. • What are the variables in the Vitamin C example? ...
... hypothesis, this is whatever is in the second blank. • The independent variable is the experimental condition that the scientist manipulates in order to look for a response. In a standard format hypothesis, this is the thing in the second blank. • What are the variables in the Vitamin C example? ...
Philosophy 352: Philosophy of Science
... In the conditional, the antecedent is a sufficient condition for the consequent and the consequent is a necessary condition for the antecedent. Thus, if the consequent is false, then p, the antecedent must be false. However, need also to note that auxiliary hypotheses also affect disconfirmation. ...
... In the conditional, the antecedent is a sufficient condition for the consequent and the consequent is a necessary condition for the antecedent. Thus, if the consequent is false, then p, the antecedent must be false. However, need also to note that auxiliary hypotheses also affect disconfirmation. ...
The scientific method Developing hypotheses Literature
... observation and experimentation Observation is used in two ways: 1. Inductive reasoning ‐ discovering general principles by the careful examination of specific cases. Here the scientist organizes data (facts) into categories and asks what they have in common 2. Deductive reasoning starts with ...
... observation and experimentation Observation is used in two ways: 1. Inductive reasoning ‐ discovering general principles by the careful examination of specific cases. Here the scientist organizes data (facts) into categories and asks what they have in common 2. Deductive reasoning starts with ...
Organisms as Ecosystems/Ecosystems as Organisms
... sense (e.g., boreal forest, mangrove, wetland, etc.) is made of many kinds of species and abiotic elements, in which selection and physical dynamics take place at distinct levels and scales (Levin 1992). The extreme holistic or ...
... sense (e.g., boreal forest, mangrove, wetland, etc.) is made of many kinds of species and abiotic elements, in which selection and physical dynamics take place at distinct levels and scales (Levin 1992). The extreme holistic or ...
Gaia hypothesis
The Gaia hypothesis, also known as Gaia theory or Gaia principle, proposes that organisms interact with their inorganic surroundings on Earth to form a self-regulating, complex system that contributes to maintaining the conditions for life on the planet. Topics of interest include how the biosphere and the evolution of life forms affect the stability of global temperature, ocean salinity, oxygen in the atmosphere and other environmental variables that affect the habitability of Earth.The hypothesis was formulated by the chemist James Lovelock and co-developed by the microbiologist Lynn Margulis in the 1970s. The hypothesis was initially criticized for being teleological and contradicting principles of natural selection, but later refinements resulted in ideas framed by the Gaia hypothesis being used in fields such as Earth system science, biogeochemistry, systems ecology, and the emerging subject of geophysiology. Nevertheless, the Gaia hypothesis continues to attract criticism, and today many scientists consider it to be only weakly supported by, or at odds with, the available evidence. In 2006, the Geological Society of London awarded Lovelock the Wollaston Medal largely for his work on the Gaia hypothesis.