Showing posts with label rats. Show all posts
Showing posts with label rats. Show all posts

Thursday, June 24, 2010

Kids 'Discover' fun at science camp

Correspondent
Thursday, June 24, 2010

Squeals erupt from the children as the black and white rat scurries through a maze of brightly colored foam puzzle pieces and cardboard boxes, searching for the elusive cheese.

Unable to locate the cheese, the rat is at a standstill, prompting Michelle McPherson, director of school programs at Port Discover, to encourage the Port Discover Sensational Science camp-goers to modify the layout of the maze.

Quickly the group of eight to 12-year-olds moves into action in an ultimate display of teamwork using their recently acquired knowledge of positive reinforcement and learned animal behaviors to construct a new maze.

The best way to learn is through hands-on activities, said McPherson, an Elizabeth City State University graduate and former high school biology teacher.

Port Discover is Elizabeth City’s hands-on science museum for children. This summer marks the first series of summer camps since the center moved into its expanded space on Main Street. Port Discover director LuAnne Pendergraft says the larger space is allowing the center to offer expanded activities for the children, such as this week’s science camp aimed at teaching kids a variety of scientific techniques.

Moses McDaniel, Port Discover educator and ECSU research associate, demonstrated “laboratory techniques” on Monday helping campers create their own bacteria slides.

“It is absolutely great to see

them excited about science,” said McDaniel.

Sensational Science Camp attendees were introduced to the themes of microbiology, animal science, space exploration, technology/design and water quality this week. Camper Chaz McDaniel, 11, was excited to design and launch a water bottle rocket during Wednesday’s space exploration day.

McPherson said the space exploration theme was a result of requests for space themed projects on surveys at the end of last year’s summer science camp at Port Discover. The surveys at the end of each camp provide valuable feedback for planning future events.

The success of Port Discover’s programs has been maintained since its creation five years ago through the collaborative efforts of the staff, local government, community sponsors and Elizabeth City State University, according to Pendergraft.

“We wouldn’t be able to do what we are doing without the guidance of the university,” said Pendergraft.

The university’s “expertise of faculty,” “shared resources,” and presence of faculty on the 2010 Port Discover Board of Directors has led to “true community collaboration.”

Pendergraft said Port Discover has also been able to thrive through the recently purchased property that previously contained the Pasquotank Arts Council.

After moving into the larger space in March, the program was able to increase the number of participants in programs, decrease off-site travel and provide children with a “freer space to learn in,” said Pendergraft.

The larger facility contains a computer area with two computers loaded with science software, science board games and an Interactive Gallery that is open to the public. Enticing games like the cell require users “to match organelles with their functions,” by pressing buttons as a large model of a cell lights up with each selection. Another game asks users to pull a lever as they watch two balloon like lungs fill with air in a torso.

Glass habitats provide the onlooker with a glimpse into the activities of fish, Madagascar Hissing Cockroaches, toads, frogs, tadpoles and snakes. There is also a toddler area with “very basic” activities that provide an introduction to science, said Pendergraft.

Wendy Pierce, Port Discover director of community programs and ECSU graduate, said one of the best aspects of working with the program is the “ability to be creative in an informal learning environment.”

Pierce said the scientific method and North Carolina Standard Course of Study are used in the implementation of lessons and programs.

It is vital that we “spark a continued interest” in the areas of science, math and technology, said Pierce.

Port Discover will provide a Discovery Days camp for five to seven-year-olds June 28 to June 30.

Pendergraft said the Port Discover camps provide “quality fun” in a scientific environment.


Maze of Monkey Illusion - 2009
Optical illusion maze caused by conflicting horizontal and vertical lines.

maze of monkey illusion medium InkBlotMazes Ink Blot Mazes, By Yonatan Frimer, your humble maze artist

Maze Illusion - Artwork by Yonatan Frimer

Friday, June 18, 2010

Maze proves that bigger bonus equals worse performance

BUSINESS BOOKS-Bigger bonus, worse performance


Click the title to view the original article.

* Author says bonus pressure leads to poorer performances
* Bankers still convinced their skills deserve big pay

By Kristina Cooke

NEW YORK, June 17 (Reuters) - Around the turn of every year, bankers can think of only one thing: the size of their bonuses.

Even beyond bonus season, they run different scenarios and assumptions, trying to calculate their number.

This distracts them so much that the bigger the bonus at stake, the worse the performance, according to behavioral economist Dan Ariely, who lays out his theory in his new book "The Upside of Irrationality" (HarperCollins, $27.99).

"For a long time we trained bankers to think they are the masters of the universe, have unique skills and deserve to be paid these amounts," said Ariely, who also wrote the New York Times bestseller "Predictably Irrational."

"It is going to be hard to convince them that they don't really have unique skills and that the amount they've been paid for the past years is too much."

Ariely's findings come as regulators try to rein in Wall Street's bonus culture after the 2008 financial collapse. The financial industry argues it needs to pay large bonuses to attract and motivate its top employees.

In an experiment in India, Ariely measured the impact of different bonuses on how participants did in a number of tasks that required creativity, concentration and problem-solving.

One of the tasks was Labyrinth, where the participants had to move a small steel ball through a maze avoiding holes. Ariely describes a man he identified as Anoopum, who stood to win the biggest bonus, staring at the steel ball as if it were prey.

"This is very, very important," Anoopum mumbled to himself. "I must succeed." But under the gun, Anoopum's hands trembled uncontrollably, and he failed time after time.

A large bonus was equal to five months of their regular pay, a medium-sized bonus was equivalent to about two weeks pay and a small bonus was a day's pay.

There was little difference in the performance of those receiving the small and medium-sized bonuses, while recipients of large bonuses performed worst.

SHOCK TREATMENT

More than a century ago, an experiment with rats in a maze rigged with electric shocks came to a similar conclusion. Every day, the rats had to learn how to navigate a new maze safely.

When the electric shocks were low, the rats had little incentive to avoid them. At medium intensity they learned their environment more quickly.

But when the shock intensity was very high, it seemed the rats could not focus on anything other than the fear of the shock.

This may provide lessons for regulators who want to change Wall Street's bonus culture, Ariely said. Paying no bonus or smaller bonuses could help fix skewed incentives without loss of talent.

"The reality is, a lot of places are able to attract great quality people without paying them what bankers are paid," Ariely said. "Do you think bankers are inherently smarter than other people? I don't." (Reporting by Kristina Cooke; Editing by Daniel Trotta)

Monday, June 14, 2010

Rodent of the Week: How habits are formed

Rodent of the Week: How habits are formed

June 11, 2010

Rodent_of_the_week When I was in high school, I had to drive a long distance on a freeway to get to school. After arriving, I often wondered how I got there. I didn't remember the drive or even thinking about driving.

This feeling is a common (and, yes, somewhat scary) experience that a group of neuroscientists think they can better explain. In an experiment with rats, researchers at MIT identified two distinct neural circuits in the brain that show distinct changes when the rats were learning to navigate a maze and, later, after they mastered the task.

The rats were placed in a maze that had chocolate sprinkles at the end. The activity in specific parts of their brains was analyzed as they learned the maze, which included a T-juncture where they had to stop and choose to turn right or left. The rats performed the maze repeatedly until they had learned it.

The study showed that one specific neural circuit became stronger with practice. A second neural circuit showed high activity occurring at times when the rats had to make a decision in the maze. But as they learned the maze, activity in this circuit declined. The task had become habitual.

So, arriving at school in one piece wasn't just a matter of luck. "It is good to know that we can train our brains to develop good habits and avoid bad ones," the lead author of the study, Ann Graybiel, said in a news release.

Understanding how specific regions of the brain change through learning could help in developing new treatments for brain-based diseases. The study was published Thursday in the journal Neuron.

-- Shari Roan

Photo credit: Advanced Cell Technology Inc.

Some cool mazes, maze art and maze cartoons
Mushroom maze
Maze A Delical
Maze of Mushrooms by Yonatan Frimer 2006
Maze Portrait of Albert Einstein.
Celebrity, artword, celebrities, portraits, famous,  Portait maze of albert einstein
"Genius Maze" - By Y. Frimer


Maze Cartoon of Erdogans comparison of Flotilla raid to September 11th.

Maze cartoon of erdogan on flotilla and armenian genocide

Maze cartoon of Turkish Prime Minister Erdogan comparing the Flotilla raid to September 11th. Someone from the crowd asks how it would "stack up against the Armenian Genocide." Created by Yonatan Frimer
Click here for a printable, hi-res version of this maze
Click here or on the image for the maze solution.