Home Energy Analysis
This is the second part of a two-part exercise in which students perform an audit and analysis of energy consumption in their homes. In this part, students will estimate the amount of energy they use in their homes and investigate how their lifestyle impact the environment.
Tracing Genetic Ancestry Using DNA Microarrays
In this lesson students will read and discuss an article about genetic ancestry and genetic ancestry testing. 2. Apply knowledge of DNA and heredity to understand DNA microarrays, and concepts of genetic mutation and ancestry tracking. 3. Mimic the function of a DNA microarray used for genetic ancestry analysis by completing a paper-and-pencil activity. 4. Discuss the ethics of genetic testing in medical research.
HIV and AIDS Prevention Education
This is a collection of resource packages suggesting how education systems can change their analysis and conduct in relation to HIV and AIDS. The site also contains manuals and booklets offering basic facts and information needed for the acquisition of knowledge and development of attitudes, values, skills and practices (KAVSP) related to the prevention and control of HIV/AIDS.
Resistan
Resistan is a mechanistic simulation model of the process of selection of fungicide-resistant biotypes of a hypothetical fungal pathogen of a hypothetical crop.
The fungus is a polycyclic organism with many generations per season. There is no genetic component in this simulator. Reproduction is assumed to be asexual. A small proportion of the initial inoculum is designated as the fungicide-resistant biotype at the start of the season, and the response of that population to various fungicide spr
Phylogenetic Investigator
Phylogenetic Investigator (PI) is a software package designed to facilitate creative problem-solving in phylogenetic analysis for the purpose of teaching and learning phylogenetic inference. Users can identify characters and states, polarize characters, and engage in directed-search phylogenetic tree construction.
PI also allows the user to
* make inferences and represent them one step at a time
* vary representational features of their trees (such as angle of divergence and time betwee
Statistical Tools: Binomial Confidence Interval
This page calculates the confidence interval for a binomial probability.
Water-Resources Reconnaissance of St. George Island, Pribilof Islands, Alaska
This 15-page PDF was prepared by the USGS and provides information about sources of water and groundwater quality on St. George Island. Maps, tables, chemical analysis, cross sections and well logs are included in the report.
NASA CONNECT Tools of the Aeronautics Trade
In NASA CONNECT Tools of the Aeronautics Trade, students explore the U.S. Customary and Metric systems of measurement, understand how to convert units in both systems, and are introduced to the four forces of aerodynamics: lift, weight, drag and thrust. Students also investigate the tools and techniques used by NASA aeronautical engineers and scientists to measure lift and drag. Grades 4-8.
NASA CONNECT Data Analysis and Measurement: Dancing in the Night Sky
In NASA CONNECT Dancing in the Night Sky, students will learn about the Aurora Borealis or Northern Lights. They will learn the many legends and myths that have revolved around the aurora throughout the history of mankind. Students will also discover how NASA scientists and engineers use satellite technology to measure and analyze aurora data. They will see how Norwegian scientists apply the concepts of data analysis and measurement to study the Northern Lights by using ground-based instruments
Lecture on fieldwork in the Soviet Union, 1988-9
Public lecture given in October 1989 by Professor Ernest Gellner. He reflected on his year spent in the Soviet Union on the eve of the collapse of communism.,The lecture was given to a Cambridge Audience in the Rayleigh Lecture theatre in the Social and Political Sciences Faculty. Professor Gellner had flown in that morning from America. It was filmed, using a video 8 camera, by Humphrey Hinton. It was chaired by Dr. Alan Macfarlane. The video is unedited. The lecture lasts for about 65 minutes.
Behavior of steel members with trapezoidally corrugated webs and tubular flanges under static loadin
Engineers have long realized that corrugated webs enormously increase steel girdersâ stability against buckling and can result in very economical design. Recently, the new idea of combining the tubular flanges with corrugated webs brought new issues of research. The objective of the research presented in this thesis is to investigate the behavior of steel members with corrugated webs and tubular flanges subjected to shear, bending, and axial compression. Relative buckling modes are also disco
Synthesis and characterization of the properties of Ti3SiC2/SiC and Ti3SiC2/TiC composites
In 1996, the ternary compound titanium silicon carbide (Ti3SiC2) was for the first timesynthesized as a single-phase, fully dense compound. Its characterization revealed aunique combination of properties. For its high fracture toughness, low hardness toelastic modulus ratio and excellent damage tolerance, it was dubbed a soft ceramic. Italso displayed good thermal shock and oxidation resistance. In this work, thereinforcement of this material with silicon carbide and titanium carbide particles w
Implications of resource management in La Parguera, Puerto Rico (The)
A recent rezoning of La Parguera, southwest Puerto Rico, as a tourist zone has resulted in an imbalance between development and appropriate resource management. Development associated with tourism is destroying the sub-tropical dry forest and adding pressure on the marine resources through increased boat traffic and marine structures. Declining water quality and benthic community health are two of the impacts seen in La Parguera associated with these land use changes. This study is three-fold. F
Science In Focus: Energy
Interview with Stephen Connors about limited sources of energy and the importance of using renewable sources.,In this segment, the interviewee provides a brief overview of some sources of renewable energy that don't require "burning stuff", such as hydroelectric, solar, and wind power. He also mentions tidal and wave power. He indicates that wind and sun are diffuse so a lot of collection is required. This segment does not address the last sentence of this benchmark.
Science In Focus: Energy
Interview with Stephen Connors about limited sources of energy and the importance of using renewable sources.,In this segment, several renewable sources of energy are described as well as some of the advantages and disadvantages of each. The sources discussed in this segment are photovoltaics, wind power, biomass, geothermal, hydropower, nuclear power,tidal and wave power are mentioned but not discussed at length. He then makes the point of the necessity of acknowledging significant trade-offs
Case Studies in Science Education: Terez—Grade 4
Terez, a fourth-grade teacher, is developing an assessment strategy that is more student centered.,Terez is a teacher who is interested in using portfolios in her classroom. Different techniques are shown and discussed. Students are seen discussing and studying a few topics in Earth science, such as rocks and minerals, and weather and sky.
Science in Focus: Force in Motion: Workshop 6: "Force Against Force"
Magnets stick to other magnets and to metal objects made of iron or steel. How much force is required to break the attraction between two magnets? In this workshop, fourth-grade students explore ways to balance the force of magnetism against the force of gravity. A magnet placed in a cup on one side of a pan-balance is stuck to a stationary magnet beneath the cup. When enough washers are placed on the opposite side of the balance, the magnets will separate. Graphical analysis shows some unexpect
Science in Focus: Force in Motion: Workshop 6: "Force Against Force"
Magnets stick to other magnets and to metal objects made of iron or steel. How much force is required to break the attraction between two magnets? In this workshop, fourth-grade students explore ways to balance the force of magnetism against the force of gravity. A magnet placed in a cup on one side of a pan-balance is stuck to a stationary magnet beneath the cup. When enough washers are placed on the opposite side of the balance, the magnets will separate. Graphical analysis shows some unexpect
Applied Probability
Focuses on modeling, quantification, and analysis of uncertainty by teaching random variables, simple random processes and their probability distributions, Markov processes, limit theorems, elements of statistical inference, and decision making under uncertainty. This course extends the discrete probability learned in the discrete math class. It focuses on actual applications, and places little emphasis on proofs. A problem set based on identifying tumors using MRI (Magnetic Resonance Imaging) i
Science in Focus: Force in Motion: Workshop 6: "Force Against Force"
Magnets stick to other magnets and to metal objects made of iron or steel. How much force is required to break the attraction between two magnets? In this workshop, fourth-grade students explore ways to balance the force of magnetism against the force of gravity. A magnet placed in a cup on one side of a pan-balance is stuck to a stationary magnet beneath the cup. When enough washers are placed on the opposite side of the balance, the magnets will separate. Graphical analysis shows some unexpect
