Friday, May 14, 2010

Traditional Farmer Knowledge Leads Cuba to Organic Revolution | Worldwatch Institute

Traditional Farmer Knowledge Leads Cuba to Organic Revolution | Worldwatch Institute

Traditional Farmer Knowledge Leads Cuba to Organic Revolution

by Ben Block on May 11, 2010
Humberto RiosPhoto courtesy Goldman Environment Prize

Humberto Ríos Labrada organized seed fairs across Cuba that exchanged knowledge and best practices with rural farmers to promote seed diversity and organic farming." class="caption" align="" height="188" width="250">

Photo courtesy Goldman Environment Prize

Humberto Ríos Labrada organized seed fairs across Cuba that exchanged knowledge and best practices with rural farmers to promote seed diversity and organic farming.
At the peak of Cuba's "Special Period," the time after the Soviet Union's collapse brought the import-reliant island's economy to a halt, President Fidel Castro realized that domestic ingenuity was the only hope for a timely turnaround. As food producers struggled to feed an increasingly famished and angry nation, Castro made a phone call to Humberto Ríos Labrada, a young researcher who was searching for more efficient crop seeds.

Ríos, then a Ph.D. student studying pumpkins, was told, "We need to improve the vitamin A content to feed people." He answered Castro's call by collecting experiences from rural farmers who for several years had already been forced to raise nutritious crops without expensive, fossil fuel-dependent farm inputs. "I did it, but not through the scientific way," he said during an interview hours before accepting a 2010 Goldman Environment Prize in Washington, D.C. last month. "It was through the farmers."

The Goldman award, considered the Nobel Prize for grassroots environmentalists, recognized Ríos for his role in Cuba's rapidly spreading organic farming movement. In the face of economic crisis, thousands of Cuban farmers have boosted their yields in recent years without adding pesticides or synthetic fertilizers. The breakthrough has been due in large part to the use of new seed varieties provided by Ríos through his network of experimental farmers.

"We started with two to three crops and 25 farmers, and now we are working together with more than 20 crops at the same time with 50,000 farmers," Ríos said. "Varieties of seeds are multiplying all over the place and farmers are incorporating them in the process."

When the Soviet Union collapsed in 1991, Cuba lost some 80 percent of its imported resources, including food, machinery, and petrochemical fertilizers. The UN Food and Agriculture Organization estimated that calorie intake across Cuba was cut in half-from an average of 2,600 calories per person in the late 1980s to 1,000-1,500 per person by 1993. Across Havana, small-scale organic gardens sprouted on rooftops and backyards; farmers opened kiosks to provide city residents with locally grown crops. In the countryside, livestock and manual labor replaced tractors and organic farming replaced conventional agriculture.

At the time, Ríos was studying ways to boost vitamin A in squash using industrial agricultural models at the Higher Education Institute for Technological Education in Havana. But the institute's director turned down all his budget requests; they no longer had funding for the pesticides, fertilizers, and irrigation systems that were needed to support Ríos' work.

Despondent, Rios traveled to the countryside during his vacation to visit his wife's farming family. While wealthy farmers in Havana fretted about the economic collapse's effect on their business, Ríos found that his in-laws were thriving. "They never dealt with industrial model as such, and they knew how to deal with diversity," he recalls. As he visited several rural farms, Ríos witnessed pre-industrial practices of crop rotation and seed diversification, selecting seeds that would thrive naturally in the crop's particular environment. He soon gathered his students to study the farmers' traditional approach.

After Castro's call, Ríos was brought to the well-regarded National Institute for Agricultural Sciences, where he finished his doctoral studies. Meanwhile, he began exchanging knowledge and best practices with rural farmers to promote seed diversity. In 2000, the International Development Research Center supported Ríos in organizing seed fairs where he collected genetic materials for 92 varieties of maize and 63 types of beans, including commercial and local kinds. Farmers began organizing similar fairs on their own, expanding the reach of Ríos' work from two municipalities to 54 municipalities across nine provinces.

After realizing that farmers could boost yields without applying additional synthetic pesticides, using pest-resistant crops and seeds with natural defenses instead, Ríos turned his attention to boosting local organic farmers' access to city markets. As coordinator of his institute's Program for Local Agricultural Innovation, he is currently developing locally appropriate certification systems.

Many in Cuba do not consider organic farming a realistic large-scale agriculture strategy, however. Rather than a longterm approach, several government ministries and academic researchers consider the organic farming popularized during the Special Period as a temporary substitute in a time of crisis. Ríos disagrees.

"Sometimes we are thinking that to grow organic food is like an escape from the crisis, not a development alternative. We are fighting to give evidence. This is our battle," Ríos said. "I involve people and they make their own conclusions, but we have so much evidence to show."

Ben Block is a staff writer with the Worldwatch Institute. He can be reached at bblock@worldwatch.org.

For permission to republish this article, please contact Juli Diamond at jdiamond@worldwatch.org.

Wednesday, May 5, 2010

WiFi Transceiver Sensor System Module - Voda, LLC

WiFi Transceiver Sensor System Module - Voda, LLC:
To improve observations of the water sensors must be small and respond on short time scales. Many sensors can be deployed for extensive spatial and temporal coverage previously unavailable. The systems enable a low-cost, high-bandwidth, heterogeneous (physical-chemical-biological) coastal sensor network. In addition to the sensor advances, we've developed a compact 3D system-in-package wireless module based on the 802.11b protocol.
Currently we use a commercially available 802.11 package from Lantronix, Inc., and then control that system with our proprietary power controller management system. The folded flex package above may be added depending on certain applications that can use a small embedded system with integrated sensory system that Lantronix currently cannot provide. The goal on this technology would be to combine sensors and especially camera systems with water quality sensor stack (e.g. pH, salinity, chlorophyll, pollutants, etc.) to create sensor nodes.

Other patents

United States Patent: 7386289

United States Patent: 7386289: "The present invention is a sensor and sensor system comprising radio frequency integrated circuit means adapted as an environmental microsystem for the sensing of environmental stimulus and communication thereof. The system includes a sensor element integrally coupled to the radio frequency integrated circuit to provide functional means to the radio frequency integrated circuit. The sensed data is transmitted through the output port, which is integrally formed as part of the radio frequency integrated circuit. The overall system combines sensor and communication functions as a single integrated function to provide data for the surrounding environment in which the system is employed.

An inherent advantage of providing a system in which sensor and communication functions are integrated as a single function is that circuit manufacturers would be able to integrate sensor elements as part of the communication circuitry, thereby eliminating the need for separate manufacture processes to achieve the same purpose.

This environmentally sensitive telemetry circuit can be applied to wireless sensors in the radio frequency atmosphere and acoustics-underwater spheres. Furthermore, the scaling of the device can be miniaturized to permit access to new environmental phenomena at the micro and nano scale.

The use of a more compact integrated wireless environmental sensor has many applications: as a wireless mechanical sensor, a wireless microphone, a wireless temperature sensor, a wireless pressure sensor, a wireless chemical sensor, and modified with the proper recognition chemistry, a wireless biochemical sensor.

The fundamental operating principle for the microwireless integrated environmental sensor and transmitter system described herein, is that components of a radio frequency circuit can be interfaced to environmental signals resulting in predetermined changes in the transmission characteristics or transmission of data from the radio frequency transmitter circuit. This integration of environmentally sensitive elements within a wireless transceiver circuit permits the fusion of both sensor and communication functions into a single function.

The sensor element may comprise a mechanical means interactively coupled with the surrounding environment and adapted such that changes in the environmental surroundings of the sensor element results in changes in the mechanical parameters or position of the mechanical means. In addition, the mechanical means may be electromagnetically coupled to at least one of the elements the radio frequency integrated circuit, whereby the electromagnetic coupling would substantially modify at least one electrical property of the element for tuning of said radio frequency integrated circuit. The resulting radio frequency integrated circuit may be operable as a communications system, or a building block therefore, which provides a radio frequency output comprising data indicative of a sensed condition.

Additional flexibility may be achieved by modifying the sensor element, or mechanical means thereof, to be operable as a biochemical sensor for sensing environmental data comprised of biochemical stimuli.

The sensor element, or mechanical means thereof, may also be equipped with the required material to permit operation of the sensor element as a probe device to interact with a surface for probe measurements of a surface by the radio frequency integrated circuit.

The sensor element can be scaled to attain a higher or lower frequency of operation, but can also be configured so that the output of the circuit is modulated on top of a higher frequency carrier permitting more flexibility in overall circuit size and construction.

The environmentally sensitive elements can be mixed within a transmitter circuit and can be multiplexed into arrays for expanded sensing and phased array sensing strategies.

In a preferred embodiment of the invention, a sensor element is integrally coupled to a radio frequency integrated circuit, thereby combining both telemetry function and communications function into one integrated function for providing an output signal indicative of a sensed condition. The output signal is provided by an output port integrally formed to the radio frequency integrated circuit for the wireless communication of sensed data. The sensor system is adapted as an environmental sensor for sensing at least one physical, biological, or biochemical parameter.

The sensing function is facilitated by the sensor element, which comprises a mechanical means interactively coupled to the surrounding environment in which the sensor system is employed. This mechanical means is electromagnetically coupled to at least one element of the radio frequency integrated circuit in such a way as to modify at least one electrical property of at least one element of the radio frequency integrated circuit. The interaction between the mechanical means and the integrated circuit is such that the output signal is indicative of the environmental condition sensed by the sensor element, wherein the output signal of the radio frequency integrated signal was generated by the interaction between the sensor element with the surrounding environment.

In an alternative embodiment of the invention, the sensor element, or mechanical means thereof, can be equipped with the required material to permit a part of the mechanical means to physically interact with a surface in a probe configuration, the interaction of which results in changes in the electromagnetic interaction between the mechanical means and the radio frequency integrated circuit. As in the preferred embodiment, the mechanical means is electromagnetically coupled to at least one element of the radio frequency integrated circuit in such a way as to modify at least one electrical property of at least one element of said radio frequency integrated circuit."

Odyssey of the Mind -- Home Page

Odyssey of the Mind -- Home Page: "Odyssey of the Mind
is an international educational program that provides creative problem-solving opportunities for students from kindergarten through college. Team members apply their creativity to solve problems that range from building mechanical devices to presenting their own interpretation of literary classics. They then bring their solutions to competition on the local, state, and World level. Thousands of teams from throughout the U.S. and from about 25 other countries participate in the program."

Saturday, May 1, 2010

Assistive Technology

Assistive Technology: "Organizations Related to Assistive Technology

Organizations Related to Assistive Technology

http://assist-tech.ednet.ns.ca/
Site of the Assistive Technology Centre at Nova Scotia Community College. Excellent links, especially for teachers with one computer classrooms.

http://www.nyise.org/blind.htm
Site of the New York Institute for Special Education. Excellent resources for individuals with blindness/visual impairments.

http://www.resna.org/
Site of the Rehabilitation Engineering and Assistive Technology Society of North America. Contains guidance on purchasing decisions and assessment.

http://cat.buffalo.edu/
Center for Assistive Technology of the State University of New York - Buffalo.

http://www.nichcy.org/
The National Dissemination Center for Children with Disabilities (NICHCY). Includes information on disabilities in children, IDEA, NCLB, and effective education practices.

http://www.ataccess.org
The Alliance for Technology Access is devoted to connecting children and adults to the assistive technology they need.


Information Related to Assistive Technology

http://www.ldonline.org/ld_indepth/technology/at-iep.html
LD online site containing facts on Assistive Technology and the Individualized Education Program (IEP).

http://www.pluk.org/
The site of "Parents, Let's Unite for Kids." Links to an excellent page which contains a Family Guide to Assistive Technology.

http://www.baddesigns.com/index.shtml
Bad human factors design scrapbook: illustrated examples of items that are hard to use due to their poor design.

http://www.scipilot.com/
Contains AT experiences of individuals with quadriplegia.

http://www.nichcy.org/pubs/outprint/nd13txt.htm
NICHCY publication on assistive technology.

http://www.abledata.com
Sponsored by the National Institute on Disability and Rehabilitation Research, this site offers a wealth of information on assistive technology.

http://www.abilityhub.com
Frequently Asked Questions and information on computer access for people with disabilities.

http://www.pluk.org/AT1.html
A site for parents of students in need of assistive technology.

http://www.ldonline.org/ld_indepth/technology/technology.html
LD Online site with a wide variety of reviews, articles, guides, and resources on assistive technology.

http://atto.buffalo.edu/registered/ATBasics.php
The basics of AT in curriculum and assessment, as well as legal issues surrounding technology.

http://www.assistivetech.net/
A searchable database that provides information and links to vendors.

Companies Selling Assistive Technology

http://www.neilsquire.ca
Site of the Neil Squire Foundation. A foundation specializing in research and development of AT for individuals with physical disabilities. Designer of the first puff switch activated sailboat (http://www.martin16.com/sloop/).

http://www.rehabtool.com
Product searches, news, events and resources for those looking to buy assistive technology.

http://www.talkingtapes.org/
A company that sells textbooks, novels and other reading materials in cassette format for students with difficulty reading due to physical, cognitive, and visual impairments.

http://www.assistivetech.com/
A company that sells a wide variety of assistive technology products.

http://www.freedomofspeech.com/
This company specializes in assistive technology for learning disabilities, blindness/low vision, Braille, accessible door openers and environmental control systems.

http://www.accessingenuity.com/
Access Ingenuity offers assistive technology solutions organized categorically for a variety of environments.

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