Stability of response characteristics of a Delphi panel: application of bootstrap data expansion
Background Delphi surveys with panels of experts in a particular area of interest have been widely utilized in the fields of clinical medicine, nursing practice, medical education and health care services. Despite this wide applicability of the Delphi methodology, there is no clear identification of what constitutes a sufficient number of Delphi survey participants to ensure stability of results. Methods The study analyzed the response characteristics from the first round of a Delphi survey con
Learning to describe, classify, and differentiate similar animals
In nature, many animals look very similar. It is important to be able to describe animals and differentiate them from other animals. Consider several rodents.
Ferns, poison oak, and an unknown hairy plant on the forest floor
Poison oak and the unknown hairy plant are similar, not in appearance, but because they both have characteristics that deter predators. The three leaflets of poison oak distinguish the plant as poisonous. The hair on hairy plants, on the other hand, is unattractive to insects for food.
Do Materials Get Tired? Creep
This video explains that materials will deform slowly or “creep” under the right conditions, when constant force is applied. “Strain” is illustrated with rubber bands and we learn that engineers can calculate creep strain as a function of time.
Three Ways to Check a Fetus's Chromosomes
This figure from Human Genetics: Concepts and Applications by Ricki Lewis identifies techniques used to collect cells from fetuses for genetic testing.
Dab of DNA Helps Keep Counterfeiters at Bay
Find out in this USA Today article how DNA sequences can vouch for a souvenir's authenticity.
Seeing and Feeling Sound Vibrations
Students examine the existence of sound by listening to and seeing sound waves while conducting a set of simple activities as a class or in pairs at stations. Students describe sound in terms of its pitch, volume and frequency. They use this knowledge to discuss how engineers study sound waves to help people who cannot hear or talk.
Corn for Fuel?!
In this activity, students examine how to grow plants the most efficiently. They imagine that they are designing a biofuels production facility and need to know how to efficiently grow plants to use in this facility. As a means of solving this design problem, they plan a scientific experiment in which they investigate how a given variable (of their choice) affects plant growth. They then make predictions about the outcomes and record their observations after two weeks regarding the condition of
Survey of simple tests used by CSI
Program 6: Radix-2, DIT, One Butterfly FFT
This is a Fortran code for a simple Decimation-in-Time, Radix-2, one butterfly Cooley-Tukey FFT preceeded by a bit-reversing scrambler.
ART 319-01, Roman Art and Architecture, Spring 2006
This course will survey the main periods and works of Roman art and architecture, employing a variety of interpretative strategies to the works. The goal of this study is to gain a better understanding of what motivated Roman artistic production and how the ancient Romans interpreted and used those works.,This syllabus was submitted to the Rhodes College Office of Academic Affairs by the course instructor.
In this unit, you will be hearing and reading about the issues faced by people living in poverty in Britain in 2000. This is intended to give you an understanding of what poverty is like from the perspective of the people themselves, both in terms of the experience of living on a very low income, and some of the effects this has had on their lives. One of the biggest problems facing people living on a very low income is how to afford adequate heating.
La cristallerie du Val Saint-Lambert: beeldmateriaal mondeling beschrijven, begrijpend lezen, schrij
Op het einde van deze les kun je uitleggen hoe kristallen voorwerpen worden gemaakt, welke vakkennis er vereist is en waarom je al dan niet zou deelnemen aan een rondleiding in de kristalfabriek van Val Saint-Lambert.
McMaster Students Union President Matthew Dillon-Leitch on funding for liberal arts building
A $45.5-million investment by the Ontario government will allow McMaster to build a major new liberal arts building that will be used by more than half the entire student body and improve access to education for under-represented groups such as Aboriginal people, Crown wards and first-generation students. Read more: http://dailynews.mcmaster.ca/story.cfm?id=8082
Five Basic German Greetings
5 Basic German Greetings: Hello, Thank you, Goodbye, How are you?, and Please. The host says each German phrase twice. (47 seconds)
Five German Phrases When Visiting a Museum
This one-minute video clip focuses on 5 german phrases when visiting a museum: How much does a ticket cost? When do you close? When do you open? Can I have a map? Is there a cafe? The host says each German phrase twice.
Limpet showing foot
The intertidal zone is subject to intense wave forces and the muscular foot allows limpets to tightly grasp the rocks.
The skull helps protect the brain. The eyes are set into the orbital sockets. The nose would be located in the upside-down heart-shaped opening, but the nose is mostly cartilage.