The Bum as Con Artist: An Undercover Account of the Great Depression
Middle-class observers reacted to hoboes and tramps of the Great Depression with an array of responses, viewing them with suspicion, empathy, concern, fear, sometimes even a twinge of envy. For some, stolidly holding onto traditional values of work and success, the "bum" was suspect, potentially a con artist. Tom Kromer's "Pity the Poor Panhandler: $2 An Hour Is All He Gets" exemplified this stance, urging readers to resist the appeals of panhandlers and refer them to relief agencies, where prof
Slumming Among the Unemployed: William Wycoff Studies Joblessness in the 1890s
Even before the 1890s depression struck with devastating force in 1893, large numbers of jobless men and women competed in tight labor markets and faced homelessness. One of the best first-hand descriptions of "what it is to look for work and fail to find it" comes from political economist Walter Wycoff's two-volume study of The Workers: An Experiment in Reality, first published in 1899. Wycoff had abandoned his studies at Princeton to seek a more concrete appreciation of social problems. His re
This field exercise determines the susceptibility of different rocks to weathering, and, using the dates on the tombstones, estimates some weathering rates. Placing the field lab in context for use, this site describes the learning goals, teaching notes and materials, assessment recommendations, and provides links to other resources and references.
Determination of DNA Bases Chemistry: A Discovery-Based Experiment
The paper contains details of an electrochemistry lab where students are given the time to explore and design an experiment to identify the different DNA bases. The paper has a very useful compendium of literature relating to electrochemical techniques.
Flow Injection Analysis in the Undergraduate Laboratory
This paper titled, Flow Injection Analysis in the Undergraduate Laboratory, by Rocha and Nobrega was published in the Chemical Educator. It describes two basic experiments. One is the measurement of copper using PAR reagent as carrier in a single line FIA system. Increasing the reaction coil length results in double peaks. Refractive index effects are demonstrated in the two-line system by adding ethanol. The second experiment is the measurement of phosphate with the molybdenum blue reaction
Redes Inalámbricas en los Países en Desarrollo (Segunda edición en español)
The book is intended to be a comprehensive resource for technologists in the developing world, providing the information that they need to build real networks. By bringing this knowledge to the outer edges of the Internet, we hope to help jumpstart the construction of vital network infrastructure. Besides the topics included in the first edition, covering from basic radio physics and network design to equipment and troubleshooting, the second edition includes a new chapter dedicated to Voice ove
Bacteria in the Cafeteria
This activity from our family magazine series challenges kids to go on a microbe quest to solve a riddle. The online activity begins with a page of directions for how to find the missing letters of the riddle. As kids click their way around a virtual lunchroom, they are given 11 Yes/No questions asking whether the featured bacteria helps people. Along with the answer to the riddle, kids get a round of applause when they correctly answer all 11 questions.
Types of Antennae
This illustrated guide is designed to help students recognize and learn the different types of antennae found on arthropods. The single Web page, which can be easily printed for use at field sites or in the lab, shows plumose (featherlike) pectinate (comblike) serrate (sawlike) moniliform (beadlike) filiform (threadlike) aristrate (with bristles) elbowed (with a bend) clubbed (the segments towards the end are larger).
Parts of an Insect (Grasshopper)
This illustrated guide to a grasshopper is designed to help students recognize and learn the body parts of an insect. The single Web page, which can be easily printed for use at field sites or in the lab, also includes a short description for the following labeled parts: head thorax antenna abdomen spiracles coxa trochanter femur tibia tarsus genitalia wings.
This illustrated guide to leaf types is designed to help students understand the differences between compound and simple leaves. This single Web page can be easily printed for use at field sites. Along with an explanation of both types, the guide includes a short description of these related terms: petiole, leaf blade, leaflet, and axillary buds.
Parts of a Spider: Dorsal View of a Male Spider
This illustrated guide (dorsal view) to a male spider is designed to help students recognize and learn its common and unique body parts. The single Web page, which can be easily printed for use at field sites or in the lab, also includes a short description for the following labeled parts: chelicera pedipalp anterior eye row posterior eye row cephalothorax (or prosoma) pedicel abdomen (or opisthosoma) spinnerets coxa trochanter femur patella tibia metatarsus tarsus.
Some Clues to Describing and Understanding Organisms
This online guide helps students focus their biodiversity research in the classroom, field, and lab. It includes general and specific questions to consider, designed to help students see the clues they might otherwise miss and give them the vocabulary to discuss their findings. General questions include "What might this clue indicate?" and "Does the organism always occur in the same 'zone'? "Plant-specific questions range from "If it's woody, is there one main trunk (trees), or are there several
This OLogy activity serves as a kid-friendly how-to manual about searching for fossils. In Not Just Any Rock Will Do, kids learn that fossils "hide out" in sedimentary rock and see examples of shale and sandstone. Do's and Don'ts for Fossil Hunters gives kids practical tips and a list of fossil-hunting supplies. In Fossils You May Find, there are photos of common invertebrate, vertebrate, and plant fossils to guide kids. Paleontology Clubs and Web Sites lists resources to help kids determine whe
Life in the City
This fun Web site is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, they take a close-up look at biodiversity in a city park. The site opens by telling kids that, despite appearances, a great deal of biodiversity exists in cities. That from tiny mites to mighty trees, thousands of species thrive there. It then takes them to a slice of life from a thriving city park, where they are asked to find 10 hidden critters living alongside the trees, plant
What Makes You, You? What Makes Me, Me?
This interactive presentation is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, they travel along as a young boy goes in search of his genes. The presentation begins with the boy wondering where his genes are. With each click, kids zoom in from cells on the boy's arm all the way down to the base pairs of his DNA. With each zoom in, a memorable rhyme explains what students are seeing. The presentation ends with this thought: "We're all related in
Feed the Birds
This OLogy activity introduces kids to the concept of biodiversity by helping them discover the diversity of their local bird population. To begin, students create a simple bird feeder from a milk/juice carton or a plastic soda bottle. They then fill the feeder with black-oil sunflower seeds, popular with a range of birds. In addition, they are given a list of additional foods to experiment with, such as millet, raisins, and breakfast cereal. Students track the birds that visit their feeder in f
Applied Mathematics III
This is a short 1-level applied mathematics module with questions practicing addition, subtraction and occasionally multiplication and division. In about half the questions, use is made of Roman numerals. It is intended for revision purposes. The setting is the Roman Empire. Help a variety of citizens and even Caesar himself work out the necessary sums to manage their everyday lives. Technically the module is of interest because it shows the use of custom virtual keyboards. Instead of a modern n
Assessing the Biological Weapons and Bioterrorism Threat
BIOSECURITY FOR A NEW ERA Lecture Series Biological weapons (BW) have been a significant national security preoccupation for nearly 15 years. The events of September 11 and the anthrax attacks that followed have magnified these concerns by orders of magnitude while shifting the context almost entirely to "bioterrorism." Over the past four years, the federal government has spent nearly $30 billion to counter the anticipated threat. Strangely, these responses took place in the absence of virtuall
Biomimicry: Innovation Inspired by Nature
Janine Benyus Author of "Biomimicry: Innovation Inspired by Nature" - Biomimics related to Energy and other industries - Opportunities in the rapidly growing Biomimics field - Green Chemistry as part of Biomimicry Co-Sponsored by: - Clean Tech Venture Network - Greenbiz - The Helios Project at Lawrence Berkeley National Laboratories - The Berkeley Energy & Resource Collaborative (BERC) - The Horace M. Albright Lectureship in Conservation
Conversations with Berkeley Faculty: Manuel Castells (5/9/01)
Conversations with History Presents Faculty Research at the University of California, Berkeley A Conversation with Manuel Castells Professor of Sociology and Professor of City and Regional Planning "Identity and Change in the Network Society" This interview took place on May 9, 2001. Complete transcript is available. A social theorist, Professor Castells has won the C. Wright Mills Award, and he has received the Robert and Helen Lynd Award from the American Sociological Association for his li