Functional Integration in CAD Systems
This paper examines the issue of integration in CAD systems and argues that for integration to be effective, it must address the functional aspects of a CAD system. It discusses the need for integrated systems and, within a structural engineering context, identifies several facets of integration that should be targeted. These include 2-D drafting and 3-D modelling, graphical and non-graphical design information, the CAD data structure and its user interface, as well as integration of the draftin
Places of Mind: Implications of Narrative Space for the Architecture of Information Environments
Virtual reality and cyberspace are extended spaces of the mind different from, yet related to, the spaces of fiction and ancient myth. These earlier spaces reveal how electronic media, too, may come to define our selves and our culture. Indeed, a better understanding of how we use space to think can lead to the design of better information environments. This paper will describe a range of traditional narrative spaces, revealing their varied relationships with the physical world. It will demonstr
Duke on Demand Highlights for the Week of October 17
This week on Duke on Demand, a Duke Athletics video report takes a look back at the victories and lessons from last year's championship season. "Enhancing My Medical Education Through Photography" is a talk at the Center for Documentary Studies by Duke pediatrician and photographer John Moses. And, Defense Secretary Robert Gates gives an address on campus about the make-up of the military.
Parametric modulations in Masonry
The focus of the research presented in this paper asks how a designer can create a flexible system of physical making which can accommodate multiple programmatic functions within a smooth whole, rather than creating an a priori singular formal object. This adaptable system of construction works through the development of an intelligent CAD model that can be mapped to a flexible manufacturing mechanism, i.e. a reconfigurable mold. This system of manufacturing can be used to cast totally unique
Al 88, Si 12 (wt%), eutectic alloy
This alloy is of the eutectic composition. From the melt a eutectic is formed between aluminium solid solution and virtually pure silicon. Slow solidification produces a very coarse microstructure. The eutectic comprises large plates of silicon in the aluminium matrix. This microstructure displays poor ductility due to the brittleness of large silicon plates. The microstructure is normally refined through either rapid solidification, which lets the silicon phase assume a fibrous form, or by a pr
Pupil voice: comfortable and uncomfortable learnings for teachers
This is a DfES Research Informed Practice (TRIPS) digest of research. The researchers interviewed Year 8 pupils about the teaching and learning in their lessons. They fed back the comments to their teachers. They then interviewed the teachers to find their reactions to the pupils’ comments and investigated the use the teachers made of the ideas with their current and subsequent classes.
Articulated Figure Positioning by Multiple Constraints
A problem that arises in positioning an articulated figures is the solution of 3D joint positions (kinematics), when joint angles are given. If more than one such goal is to be achieved, the problem is often solved interactively by positioning or solving one component of the linkage, then adjusting another, then redoing the first, and so on. This iterative process is slow and tedious. The authors present a method that automatically solves multiple simultaneous joint position goals. The user inte
H.I.P. Pocket Change
This explores the history of coins. Teachers can find lesson plans on charting history with pennies, or showing students 293 ways to make change for a dollar. Students can learn how to start their own coin collection, travel back through history using coins as their guide, or design a future coin.
Arteries and veins of the zebra fish
Arteries and veins are blood vessels and are part of the circulatory system. Arteries take oxygenated blood away from the heart and veins bring blood back to the heart after it has circulated through the body. The circulatory system distributes oxygen to the body and also moves around nutrients.
Animal Studies: Turtle
This turtle has a back full of green, mossy algae. When the turtle is stationary in the water, it can camouflage itself to look like a moss-covered rock.
Animal Defenses: Gecko
Animals such as some geckos, lizards, and salamanders can shed their tails to escape a predatory attack. This process is called autotomy. The missing tail eventually grows back.
Conflict resolution: "Back Home Action Planning"
This "Back Home Action Planning" unit offers an opportunity for individuals to plan how they will apply their new Cooperative Problem Solving skills in their back-home environment.
Seasonal Migrations: Whooping Cranes
Children follow the migrations of animals. They observe, research, and report their findings, and watch journeys progress on real-time maps. Through these interrelated investigations, students discover that sunlight drives all living systems and they learn about the dynamic ecosystem that surrounds and connects them. Fall: Students watch chicks grow and then "join" the migration as humans teach the birds a new route using an ultra-light plane to lead the way. Daily updates: September-December. S
Origin of the Elements of Life
Human beings are, by nature, curious about their beginnings. Often, such questions of "how we came to be" are confined to the origins of modern society, or the development of human beings as a species. In this lecture, Professor Timothy Beers will endeavour to take the discussion all the way back to the VERY beginning, to the origin of the primary elements required to construct life as we know it -- carbon (C), nitrogen (N), and oxygen (O).Over the past few decades, astronomers and physicists ha
Powering the Planet: The Challenge for Science in the 21st Century
The supply of secure, clean, sustainable energy is arguably the most important scientific and technical challenge facing humanity in the 21st century. Rising living standards of a growing world population will cause global energy consumption to increase dramatically over the next half century. Within our lifetimes, energy consumption will increase at least two-fold. This additional energy needed is not attainable from long discussed sources, the global appetite for energy is simply too much. Pet
Achieving and Maintaining Full Employment
In 1951, the year Sir Roland Wilson became Secretary to the Treasury, the terms of trade rose to their highest level on record. While the terms of trade fell back in the following year, they did not fully retrace their rise for a number of years. Around this time, Australia entered a long period of sustained economic growth, with the unemployment rate rarely rising above 3 per cent. Today the Australian economy is growing strongly, supported by the highest terms of trade since Sir Roland was Tre
Sentiments and Spectators: Adam Smith’s Moral Psychology
Adam Smith offers a wonderfully lucid argument for thinking that people can legitimately be praised or blamed only on the basis of the agent's "intention or affection of the heart" and not on the actual effects of the action, over which fortune, rather than the agent, has control. He then notes that our judgments of people do not respect the force of this argument. Our judgments of merit and demerit are regularly, and systematically, influenced by circumstances over which the agent h
The Australian Labour Market in Booms & Slumps
Professor Gregory will look back and analyse employment, skill imbalances, hours worked and welfare interactions in each of the economic booms and slumps over the last four decades and ask is Australia making progress in overcoming what appear to be entrenched structural problems in the labour market? He will also look forward to the next economic upswing and conjecture whether labour market outcomes will be very different from past experiences? He will comment on the changing labour market outc
The Next 100 Years - A Forecast for the 21st Century
In his book The Next 100 Years, George Friedman offers a lucid, highly readable forecast of the changes we can expect around the world during the twenty-first century. He explains where and why future wars will erupt (and how they will be fought), which nations will gain and lose economic and political power, and how new technologies and cultural trends will alter the way we live in the new century. Drawing on history and geopolitical patterns dating back hundreds of years, Friedman shows that w
A look back at WorldHouse