Author Archives: curiouscat

Growing Lettuce in My Backyard

photo of lettuce in my garden

I planted lettuce in my backyard for the first time this year. I have enjoyed growing food in my backyard for the last several years. First it is very convenient. I want something to eat I can just go grab it out of the garden. Also it is healthier that many of the other things I might snack on. In addition, you can save money by growing your own food. And it is good for the environment (granted individuals don’t have much of an impact, but millions of people growing some of their own food does – reducing the amount of food transportation on the environment).

Also, I just find it cool to grow food in my yard to feed myself.

I don’t use anything to fertilize the soil or pesticides or anything. I just plant and let it grow (sometimes I water the garden). I just have a compost pile that is mainly leaves that I stir into the garden soil. It has worked fine for years now. I will grow tomatoes, berries, peppers, beans, peas and cucumbers again this year.

Google Social Circle Results

I haven’t paid much attention to this before: Google showing results based on your social network. In genera,l I think Google is doing great stuff. Their approach to profiles, buzz, search wiki, and social stuff in general however, I find poor (extremely poorly when I see how well they do so much else). They are too borg-like in their insistence you do things exactly as proscribed by them. They opt you in far to often, in the way they want – completely and with few, if any, options. They don’t provide good tools to let you manage your profile and connections. The Google profile itself is extremely lame.

It is very silly that they don’t let you create personas you want to use and let you use them as you want. They force you to use the Google account you are logged in as to access Google services as the profile used in Google searches. I don’t want or need the 2 tied together. And I would much prefer a way to switch between my personas by search (or buzz [though I dropped it because it was so inflexible] or whatever). I know which persona I want for a specific search. This seems like a very obvious thing lots of people would want to do. Google’s whole monolithic, one-very-rigid-size-fits-all social solutions don’t allow this. It is a fundamental flaw. Without fixing the flexibility of social services from Google I see them having trouble succeeding in that area. On the other hand much else of what they do is fantastic.

The way their search wiki stuff works is very similar: inflexible. They seem focused on do it how we want which is not, I think, the way most people want. Their social solutions are very all or nothing. They want people to behave how Google wants. For that reason after short attempts to try Google’s social efforts I give up. I keep hoping they will become more flexible and user friendly but keep being disappointed.

This is the network of connections Google uses to identify relevant social search results. It is based on a combination of the following:

Direct connections from your Google chat buddies and contacts (5)
Direct connections from links listed on your Google profile (0) such as Twitter and FriendFeed
Secondary connections (252) that are publicly associated with your direct connections
In addition to web pages from your social circle, posts from your Google Reader subscriptions may also appear in your social search results.

Google Social Search is a feature designed to help you discover relevant publicly-accessible content from your social circle, a set of online friends and contacts. The idea is that content from your friends and social contacts is often more relevant to you than content from strangers. For example, a movie review from an expert is useful, but a movie review from your best friend can be even better.

See video on Google social search:
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Critter Cam: Sea Lion versus Octopus

Octopus vs. Sea Lion – First Ever Video

Sea lions fitted with GPS trackers and a National Geographic Crittercam are taking scientists on amazing journeys to previously unknown marine ‘hot spots.’ These areas are important not only for providing the sea lions’ food, but also for maintaining fish populations.

The Crittercams were deployed at Dangerous Reef in Spencer Gulf, a rocky island the size of a football field, and home to the biggest Australian sea lion colony.
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Dr. Page says, “One important discovery is that the sea lions always feed on the sea floor” and they don’t eat open ocean fish, known as pelagic. “This is critical information because the marine parks are being set up to protect sea floor habitats,” a move that the scientists can now confirm will protect critical sea lion resources.

In one of the more spectacular pieces of Crittercam video so far, we can see this female working hard to handle a challenging prey item – a large octopus. Too big to swallow in one gulp, she drags it to the surface where she can breathe while she works at breaking it down into bite-size pieces.

Solar-Powered Desalination

Saudi Arabia meets much of its drinking water needs by removing salt and other minerals from seawater. Now the country plans to use one of its most abundant resources to counter its fresh-water shortage: sunshine.
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KACST’s main goal is to reduce the cost of desalinating water. Half of the operating cost of a desalination plant currently comes from energy use, and most current plants run on fossil fuels.
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Reducing cost isn’t the only reason that people have dreamed of coupling renewable energy with desalination for decades, says Lisa Henthorne, a director at the International Desalination Association. “Anything we can do to lower this cost over time or reduce the greenhouse gas emissions associated with that power is a good thing,” Henthorne says. “This is truly a demonstration in order to work out the bugs, to see if the technologies can work well together.”
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Saudi Arabia, the top desalinated water producer in the world, uses 1.5 million barrels of oil per day at its plants, according to Arab News.
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In a concentrated PV system, lenses or mirrors focus sunlight on ultra-efficient solar cells that convert the light into electricity. The idea is to cut costs by using fewer semiconductor solar cell materials. But multiplying the sun’s power by hundreds of times creates a lot of heat. “If you don’t cool [the device], you end up overheating the circuits and killing them,” says Sharon Nunes, vice president of IBM Big Green Innovations. IBM’s solution is to use a highly conducting liquid metal–an indium gallium alloy–on the underside of silicon computer chips to ferry heat away. Using this liquid metal, the researchers have been able to concentrate 2,300 times the sun’s power onto a one-square-centimeter solar device. That is three times higher than what’s possible with current concentrator systems, says Nunes.

Finding good desalination solution could help many other locations (including southern California). But there is still a long way to go.

Cat Fun: Rocky the Standing Cat

This cat can stand straight up for a long time. And it is a real cat not a Meerkat 🙂

VidÃ©o du chat qui se tient debout: “Il s’appelle Rocky et il sait aussi s’asseoir” (as translated by Google):

“His name is Rocky, he is 2 years old,” said Daisy.
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“He started doing this about a year,” says Daisy. “Now it does more too because I rearranged the furniture, but when I made the video last fall, he could not see out the window if it did not make sense . But the window overlooking the rooftops, where there are often birds. So he gets up. ”

[why does Rocky move his arms in the middle of the video]?
“Maybe he wanted to rest, but waived them, or perhaps there was a bird “, launched Daisy. “Sometimes when he sees a dog growls, so perhaps there was one.”

Poor Results on Evolution and Big Bang Questions Omitted From NSF Report

Evolution, Big Bang Polls Omitted From NSF Report by Yudhijit Bhattacharjee

The section, which was part of the unedited chapter on public attitudes toward science and technology, notes that 45% of Americans in 2008 answered true to the statement, “Human beings, as we know them today, developed from earlier species of animals.” The figure is similar to previous years and much lower than in Japan (78%), Europe (70%), China (69%), and South Korea (64%). The same gap exists for the response to a second statement, “The universe began with a big explosion,” with which only 33% of Americans agreed.

The USA continues to lag far behind the rest of the world in this basic science understanding. Similar to how we lag in other science and mathematical education. Nearly Half of Adults in the USA Don’t Know How Long it Takes the Earth to Circle the Sun.

Jon Miller, a science literacy researcher at Michigan State University in East Lansing who authored the survey 3 decades ago and conducted it for NSF until 2001. “Evolution and the big bang are not a matter of opinion. If a person says that the earth really is at the center of the universe, even if scientists think it is not, how in the world would you call that person scientifically literate? Part of being literate is to both understand and accept scientific constructs.”

I completely agree. People have the right to their opinions. But those opinions which are related to scientific knowledge (whether it is about evolution, the origin of the universe, cancer, the speed of light, polio vaccinations, multi-factorial designed experiments, magnetic fields, chemical catalysts, the effectiveness of antibiotics against viral infections, electricity, optics, bioaccumulation, etc.) are part of their scientific literacy. You can certainly believe antibiotics are affective against viral infections but that is an indication you are scientifically illiterate on that topic.

2006 NSF chapter that included the results
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HP Makes Progress on Revolutionary Memristors

H.P. Sees a Revolution in Memory Chip

Memristor-based systems also hold out the prospect of fashioning analog computing systems that function more like biological brains, Dr. Chua said.

“Our brains are made of memristors,” he said, referring to the function of biological synapses. “We have the right stuff now to build real brains.”

In an interview at the H.P. research lab, Stan Williams, a company physicist, said that in the two years since announcing working devices, his team had increased their switching speed to match today’s conventional silicon transistors. The researchers had tested them in the laboratory, he added, proving they could reliably make hundreds of thousands of reads and writes.

That is a significant hurdle to overcome, indicating that it is now possible to consider memristor-based chips as an alternative to today’s transistor-based flash computer memories, which are widely used in consumer devices like MP3 players, portable computers and digital cameras.

“Not only do we think that in three years we can be better than the competitors,” Dr. Williams said. “The memristor technology really has the capacity to continue scaling for a very long time, and that’s really a big deal.”

South African Fossils Could be New Hominid Species

South African fossils could be new hominid species

The fossils of a female adult and a juvenile male – perhaps mother and son – are just under two million years old. They were uncovered in cave deposits at Malapa not far from Johannesburg.

Researchers tell the journal Science that the creatures fill an important gap between older hominids and the group of more modern species known as Homo, which includes our own kind. The team has assigned the name Australopithecus sediba to their finds.

“It’s at the point where we transition from an ape that walks on two legs to, effectively, us,” lead scientist Professor Lee Berger of the University of the Witwatersrand told BBC News.

“I think that probably everyone is aware that this period of time – that period between 1.8 and just over two million years [ago] – is one of the most poorly represented in the entire early hominid fossil record. You’re talking about a very small, very fragmentary record,” he explained.
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Their bones were laid down with the remains of other dead animals, including a sabre-toothed cat, antelope, mice and rabbits. The fact that none of the bodies appear to have been scavenged indicates that all died suddenly and were entombed rapidly.

“We think that there must have been some sort of calamity taking place at the time that caused all of these fossils to come down together into the cave where they got trapped and ultimately buried,” said team-member Professor Paul Dirks from James Cook University in Queensland, Australia.

All were preserved in the hard calcified clastic sediment that formed at the bottom of a pool of water.

Spring Tulips

photo of red and yellow tulips by John Hunter

Photo of red and yellow tulips in my yard. This is by far the most tulips that have flowered. The last several years I think there were 3-5 flowers. This year there are 20 in the front yard.

University of Wisconsin-Stout Wins 2010 Rube Goldberg Contest

University of Wisconsin-Stout wins 2010 Rube Goldberg contest

The team’s machine was called “Valley of the Kings” and had an Egyptian theme, telling a tale of events following the death of King Tut.

The task for the Rube Goldberg machines this year was to dispense sanitizer into a hand. Wisconsin-Stout’s machine dispensed the sanitizer into a mummy’s hand. The Rube Goldberg competition, sponsored by Phi Chapter of Theta Tau fraternity, rewards machines that most effectively combine creativity with inefficiency and complexity.

Machines must use at least 20 steps to complete the task in no more than two minutes. Teams have three tries to complete two runs. Points are deducted if students have to assist the machine once it has started. The Wisconsin-Stout machine has 120 steps. The team completed two perfect runs with no interventions in about a minute and a half each.
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St. Olaf’ College of Northfield, Minn., last year’s national winner, took second place with a medieval-themed machine. Pennsylvania State University placed third with an “Indiana Jones” theme.