Inside the Federal Courts
One of the Federal Judicial Center's duties is to teach federal court employees about how the courts work, how they are organized, and how they fit into the U.S. system of government. We developed this site as an easy reference to help court employees understand aspects of the federal courts outside of their specific responsibilities. We put it on our public website because it may also help students, the media, and the public learn more about the federal courts.
But What Does It Mean? Symbolism in Artwork
In this elementary-level lesson, students will learn about the importance of symbolism and prior knowledge in the interpretation of artwork. After defining symbolism and seeing a simple example, students will analyze and identify symbols in The Artist in His Museum, 1822, a self-portrait created by Charles Willson Peale in 1822. They will then be given additional factual information about Peale's life and be asked to revisit their initial perceptions and confirm or revise their thoughts. Finally
Lets us look over the shoulders of scientists and glimpse the often-unseen moments of investigation. Take virtual field trips to eight observatories -- Arecibo, where astrobiologists search for signs of life beyond the solar system; Las Cuevas, a research station in Central America's largest remaining rainforest; and others. See interviews, photos, and broadcasts that explore the origins of matter, the universe, and life itself.
This is a project to develop a document for teaching graduate econometrics that is "open source", specifically, licensed as GNU GPL. That is, anyone can access the document in editable form, and can modify it, as long as they make their modifications available. This allows for personalization, as well as a simple way to make contributions and error corrections. The hope is that people preparing to teach econometrics for the first time might find it useful, and eventually be motivated to contribu
Earth Exploration Toolbook Chapter: Visualizing Carbon Pathways
This EET Chapter will introduce you to visualization capabilities available through NASA's Earth Observatory. You'll build several animations of satellite data that illustrate carbon pathways through the Earth system. For instance, you'll build animations of fire images that indicate carbon is being released into the atmosphere. You'll also make animations of plant productivity images that indicate carbon is being removed from the atmosphere and locked into the biosphere. After you've built anim
Earth Exploration Toolbook Chapter: Looking into Earth with GIS
Step-by-step instructions walk users through working with data from a seismic wave model in a freely available GIS (geographic information system) program, ESRI's ArcVoyager SE. Users generate and examine maps and produce graphs to explore variations in seismic wave velocities at depths of 28 and 100 km below Earth's surface. By examining and analyzing GIS-ready data, users visualize density changes and earthquake distributions near a spreading center and two subduction zones. Finally, users wil
Earth Exploration Toolbook Chapter: Creating Custom Map Images of Earth and Other Worlds
This chapter familiarizes users with Jules Verne Voyager, a freely available online map tool that includes data for Earth as well as 19 other planets and moons. Users create a variety of map images then save and import the images into a presentation or a word-processing document. In the activity, users explore the range of data that are available to create map images: 100 different types of data are available to characterize portions of Earth. In addition, Voyager has at least one type of data f
Earth Exploration Toolbook Chapter: Using GLOBE Data to Study the Earth System
This Earth Exploration Toolbook chapter guides users through the process of locating and graphing data that has been collected by students who participate in the GLOBE Program. Users access the online GLOBE graphing tool and produce a graph comparing four Earth system variables over two complete years. Data include Maximum Air Temperature, Soil Moisture (at depths of both 10 cm and 90 cm), and Rainfall recorded in Greenville, Pennsylvania. As they investigate this specific case study, users disc
Earth Exploration Toolbook Chapter: Investigating Earthquakes: GIS Mapping and Analysis
This activity describes the technique of preparing latitude-longitude based data so it can be imported into a geographic information system (GIS). The chapter describes the steps to create a map to display data and guides users through some basic geographic analyses. The focus of the chapter's case study is earthquake prediction. Users download and format near real-time and historical earthquake data from the USGS. They import the data into ArcVoyager Special Edition GIS software, and analyze pa
Mitochondrial Control Region
Every human cell has a "second" genome, found in the cell's energy-generating organelle, the mitochondrion. In fact, each mitochondrion has several copies of its own genome, and there are several hundred to several thousand mitochondria per cell. This means that the mitochondrial (mt) genome is highly amplified. While each cell contains only two copies of a given nuclear gene (one on each of the paired chromosomes), there are thousands of copies of a given mt gene per cell. Because of this high
Detecting Genetically Modified Food by PCR
Genetic engineering is responsible for the so-called "second green revolution." Genes that encode herbicide resistance, insect resistance, drought tolerance, frost tolerance, and other traits have been added to many plants of commercial importance. In 2003, 167 million acres of farmland worldwide were planted in genetically modified (GM) crops equal to one fourth of total land under cultivation. The most widely planted GM crops are soybeans, corn, cotton, canola, and papaya. Two important tr
The goal of the Genetic Origins Program is to allow students to use their own DNA variations (polymorphisms) as a means to explore our shared genetic heritage and its implications for human health and society. Genetic Origins focuses on two types of DNA variations: an Alu insertion polymorphism on chromosome 16 (PV92) and single nucleotide polymorphisms (SNPs) in the control region of the mitochondrial (mt) chromosome. With two alleles and three genotypes, PV92 is a simple genetic system that il
The Geologic Time Scale
This resource presents a table of the Geologic Time Scale. The time scale begins with a brief description of the Precambrian Era, and proceeds through the Cambrian Period starting 544 million years ago and concluding with the Holocene Epoch of today. The time periods are explained and include the dates, scientific names, historical descriptions, and common names. The table is organized by Era, Period or System, and Epoch or Series.
Gulf Coast Geology Online Interactive Mapping System
This interactive mapping system is one component of the U. S. Geological Survey's Framework Studies and Assessment of the Gulf Coast Project. This project provides the geologic, geophysical, and geochemical framework for the region. The mapping system displays different aspects of the energy resources which reside in the Gulf of Mexico Basin, one of the major hydrocarbon producing areas of the world.
Columbia River Basalt Group, Washington, Oregon, and Idaho
This resource describes the Columbia River Basalt Group. The site features brief discussions of the stratigraphy and age of the group, as well as the group's vent system, volumes and eruption rates, and magma supply rates. This CRBG description is an excerpt from the ICG Field Trip T106: Cenozoic Volcanism in the Cascade Range and Columbia Plateau, Southern Washington and Northernmost Oregon: American Geophysical Union Field Trip Guidebook T106, p.21-24.
TOXMAP is a Geographic Information System (GIS) from the National Library of Medicine that uses maps of the United States to help users visually explore data from the EPA's Toxics Release Inventory. TOXMAP maps show where reported chemicals are released on-site into the air, water, and ground. The maps also identify the releasing facilities, single year releases, and chemical release trends over time.
Systems Design and Administration I, Fall 2007
Course for students in Computer Information Systems or in Computer and Information Technologies programs. This course will instruct students in system administration topics, including computer hardware selection, user account management, file system optimization, and security. Basic system services such as FTP, WWW, email, printer, and DBMS will also be covered. Students will be required to install, configure, and test the services in a server environment. Three lecture hours per week.
The American Jury: Bulwark of Democracy
"The American Jury: Bulwark of Democracy" is a project of the Constitutional Rights Foundation Chicago and is the national expansion of "The American Jury: Past and Present," conducted in Illinois during 1998-1999. Beginning with a two-week institute in July 1999, "The American Jury" focused on the jury system in the United States. its role in American legal, social, and political life; its origins and history; its adaptations to changes in law and American society; its strengths and limitations
Mars 2003: Closest Approach lithograph and associated classroom activity
The two images of Mars, taken 11 hours apart with NASA's Hubble Space Telescope, reveal two nearly opposite sides of Mars. Hubble snapped these photos as the red planet was making its closest approach to Earth in nearly 60,000 years. Prominent features visible on the images are labeled on a separate illustration. In Search of - Planet Mars is the educational activity that accompanies this lithograph.
Highlight how symbolic operations on a system of linear equations do (or do not) change the graphic or tabular representations of the system. Note that the System Solver is a tool intended to illustrate the rationale behind the symbolic operations used to solve systems of linear equations, and not a way to learn what procedures to follow.