Showing posts with label technology. Show all posts
Showing posts with label technology. Show all posts

Friday, December 09, 2011

Accelerating Convergence of Hand-Held Technologies

Wired

We are accustomed to using our hand held devices for media play, reading, web search and email, telephoning, as still and video cameras, playing games, etc. But hand held electronics devices can provide a wide range of functions that are more serious. The oscilloscope device pictured above is a serious instrument useful for both hobbyists and researchers. Hand held iOS devices can also be used as scientific microscopes, EEG imaging devices, neurofeedback devices, and for a wide range of other instrumentation uses.
Let me start out by stating that this doesn’t actually compare to the high-end models as far as sampling and bandwidth. You won’t use the iMSO-104 for extremely high-speed, GHz-frequency signal applications. Honestly, for home maker use, I don’t see this being an issue for a long time. Oscium provided a scope for my review and before it even arrived I thought of my list of features to look for and try out. So what were some of the things that I was looking for in using the scope? First, being based on an iOS device, I was looking for a simple and navigable interface. Check. The scope plots zoom just as you would expect with the common iOS finger pinches and spreads. The traces are easy to drag up and down as you would expect as are the measurement cursors. Measurement cursors! That was another item! In the video linked above, Collin shows how you can make measurements on an old CRT scope using the time per division and volts per division selection and visual cues. On some of the digital scopes I have used, you could bring up a cursor that would give you the time or voltage between the points. This scope includes those cursors and if you know what I am talking about it is just as easy to use and intuitive as you think. If you don’t: trust me, it is very intuitive.

The Oscium scope can also do all of those things you would expect from any scope: triggering, running measurements, the ability to freeze the display, screen shot, data capture, e-mail, and configuration saving. The unit supports a single analog probe and four digital probes, all included in the kit. You can run all five inputs at one time or select any combination to show. _Wired
The imagination is the limiting factor, as for most human activities. What is the app for that?

Wednesday, October 26, 2011

Re-Booting Civilisation from the Ground Up

Global Village Construction Set - TED Talk from Open Source Ecology on Vimeo.

Have you ever considered how you would go about re-starting civilisation if the Earth were struck by a comet, or suffered some other widescale, civilisation-ending catastrophe? The people at Open Source Ecology have, and they are in the process of building the Global Village Construction Sett.

This construction set is a platform which will allow you to build 50 industrial machines that you can use to re-build civilisation from the ground up.

The complete Global Village Construction Set will include 50 different industrial machines, from tractors and sawmills to wind turbines and steam generators and CNC mills and 3D printers and laser cutters. Apparently, with all 50 of these machines, you can create "a small civilization with modern comforts." Yep, that's all it takes. So far, they've prototyped eight of these machines, and with help from Kickstarter, they're hoping to get to work on the other 42 to make them available to hopeful developing civilizations all over the world. _DVice


What Makes the Global Village Construction Set so special?

Open Source- we freely publish our 3d designs, schematics, instructional videos, budgets, and product manuals on our open source wiki and we harness open collaboration with contributors.
Low-Cost- The cost of making or buying our machines are, on average, 8x cheaper than buying from an Industrial Manufacturer, including an average labor cost of $15 hour for a GVCS fabricator and using mail-order parts.
Modular- Motors, parts, assemblies, and power units can interchange.
User-Serviceable - Design-for-disassembly allows the user to take apart, maintain, and fix tools readily without the need to rely on expensive repairmen.
DIY - The user gains control of designing, producing, and modifying the GVCS tool set.
Closed Loop Manufacturing - Metal is an essential component of advanced civilization, and our platform allows for recycling metal into virgin feedstock for producing further GVCS technologies - thereby allowing for cradle-to-cradle manufacturing cycles
High Performance - Performance standards must match or exceed those of industrial counterparts for the GVCS to be viable.
Flexible Fabrication - It has been demonstrated that the flexible use of generalized machinery in appropriate-scale production is a viable alternative to centralized production.
Open Business Models - We encourage the replication of enterprises that derive from the GVCS platform as a route to truly free enterprise - along the ideals of Jeffersonian democracy.
Industrial Efficiency - In order to provide a viable choice for a resilient lifestyle, the GVCS platform matches or exceeds productivity standards of industrial counterparts. _Global Village Construction Set

Tuesday, August 09, 2011

Mega-Super WiFi 802.22 Can Cover 12,000 Square Miles

To put it in a nutshell, 802.22 was designed to run on a totally new spectrum which was made available when analog TVs were outlawed some years back in the US. For those who prefer more solid scientific figures, the 802.22 spectrum will work in ranges from 54MHz to 698MHz, where such frequencies are the perfect vehicle for long distance transmissions.

Imagine sending out 22 Mbps of data within a 62 mile radius from a sole base station – that would certainly bring Wi-Fi connectivity to even the most rural areas around the country. _Ubergizmo
IEEE has created a new 802.22 WiFi standard to take advantage of the FCC "Super WiFi" classification.
IEEE, the world’s largest professional association advancing technology for humanity, today announced that it has published the IEEE 802.22TM standard. IEEE 802.22 systems will provide broadband access to wide regional areas around the world and bring reliable and secure high-speed communications to under-served and un-served communities.


This new standard for Wireless Regional Area Networks (WRANs) takes advantage of the favorable transmission characteristics of the VHF and UHF TV bands to provide broadband wireless access over a large area up to 100 km from the transmitter. Each WRAN will deliver up to 22 Mbps per channel without interfering with reception of existing TV broadcast stations, using the so-called white spaces between the occupied TV channels. This technology is especially useful for serving less densely populated areas, such as rural areas, and developing countries where most vacant TV channels can be found.

IEEE 802.22 incorporates advanced cognitive radio capabilities including dynamic spectrum access, incumbent database access, accurate geolocation techniques, spectrum sensing, regulatory domain dependent policies, spectrum etiquette, and coexistence for optimal use of the available spectrum.

The IEEE 802.22 Working Group started its work following the Notice of Inquiry issued by the United States Federal Communications Commission on unlicensed operation in the TV broadcast bands. _IEEE Press Release via Tekgoblin
More on Super WiFi:
Super Wi-Fi is inching closer to reality, and now the IEEE, the standards organization responsible for all things Wi-Fi, has published the IEEE 802.22standard.

This new wireless networking standard promises speeds up to 22Mbps to devices as far as 100-kilometers (roughly 62-miles) away from the nearest transmitter. This new band of Wi-Fi on steroids comes through the patch of "white space" frequencies that were previously used to analog television broadcasts.

There’s no word on when and which regions of the United States will be the first to get in on this super Wi-Fi. Houston is currently the only access point for a white space Wi-Fi, which comes courtesy of Rice University researchers. Super Wi-Fi has been slow in coming since the FCC originally approved it back in September 2010. _PCWorld
Similar technologies can create dynamic wide range data networks on the open seas, to improve safety and expand exchange for large fleets of working seasteads. New colonies built across the Arctic and Antarctic could likewise use this type of wide range networking, to coordinate activities, weather warnings, etc.


Thursday, July 14, 2011

Who Can Defend Planet Earth from the Real Threats?

Power Point Slide Presentation via Brian Wang

The US is dismantling its space program, piece by piece, and neither Europe nor Russia can afford their ambitious space goals. Only China appears to be in a position to pursue the vast opportunities, riches, and challenges of space travel, exploration, colonisation, and . . . . yes, militarisation. It is the high ground, after all.

Unless humans create space-based defenses against errant asteroids, comets, and other dangers from extraterrestrial space, the planet Earth and its precious biosphere will remain defenseless against the most serious threats it will likely face.

Brian Wang takes a look at the problem in a recent posting, Defending Planet Earth from Space Asteroids.
4 approaches depending on circumstances

* Civil defense (evacuation, sheltering, first aid, etc.
- Up to 50 meter in diameter?

* Slow Push-Pull (tug, solar heating, albedo change, gravity tractor, et al.)
- Needs decades to operate (plus time to build, etc.)
- Max size 300-600 m diameter
- Gravity tractor closest to ready and least dependent on properties of NEO

* Kinetic Impacts (Super Deep Impact)
- sensitive to porosity of top meters to tens of meters
- momentum transfer efficiency not known
- much wider range of applicability (max size 1 to 1.5 km, shorter warning for small ones)

*Nuclear blast
- standoff blast best
- works up to 10 km and relatively short warning



What Next

* Don Quixote-like mission
- a rendezvous spacecraft at a small NEO followed by a large impactor
- biggest gain in knowledge directly related to mitigation
- Guess $1.5G; Good for international collaboration

* Gravity tractor demonstration
- fewer unknowns other than engineering
- second priority

* Apophis a possible target but any small NEO will do
- Can’t predict which might need to be used first
- Small NEO is by far the most likely
- Warning time very uncertain but short warnings are likely at ~100m diameter or less _NBF

More at link above, and at Planetary Defense and NEO Exploration PPT

Only humans with advanced science and technology can defend their planet from space threats such as comet and asteroid collision. But while the advanced western world governments are dominated by faux environmentalists and beseiged by the twin destructors of debt and demographic decline, science and technology are skewed toward dysfunctional phantom fears such as carbon hysteria, overpopulation doom, etc.

Yet another extremely dangerous societal dysfunction in the west is the ongoing "war against boys" led by highly placed feminsts in academia, journalism, think tanks, and government. It is from among the boys -- including some with Aspergers, dyslexia, and ADD -- that the bulk of high achieving scientists and technologists will inevitably be found. The war against boys is a war against science and technology, and a war against the future of the planet and the human race.

Human societies in general are going the wrong direction, heading toward an Idiocracy. It may be up to isolated groups of humans, building alliances among themselves, to preserve and extend the art of human and planetary survival via the advancement of true science and beneficial / protective technologies.

Tuesday, October 13, 2009

Bridges of Black Plastic Manicotti

The [Neal] bridge is newer than most, as suggested by the still-black asphalt and the fresh galvanized gleam of the guardrails. But it’s what is underneath that really makes the bridge stand out.

Rather than steel or concrete beams, the structure consists of 23 graceful arches of carbon- and glass-fiber fabric. These are 12-inch-diameter tubes that have been inflated, bent to the proper shape and stiffened with a plastic resin, then installed side by side and stuffed with concrete, like giant manicotti. Covered with composite decking and compacted soil, the arches support a standard gravel-and-asphalt roadway.

The bridge is the first of what its designers, about 50 miles up the road at the University of Maine in Orono, hope will be many of its type, combining composite materials with more conventional ones like concrete. With an estimated 160,000 of the nation’s 600,000 road bridges in need of repair or replacement, if it or other hybrid designs catch on, they could mark a breakthrough in the use of fiber-reinforced plastics, known as F.R.P., on highways. __NYT_via_ImpactLab
These new plastic-fiber bridges are lighter for the same strength -- thus allowing for heavier live loads (traffic). How well they will age in different climates is a question that will have to be answered with more testing, and time.