Friday April 26, 2019
Home U.S.A. Using compute...

Using computer algorithm to catch the sound of endangered frogs

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Red legged frog. Image Source - Wikipedia
  • Red-legged frogs are listed as threatened under the Endangered Species Act.
  • Gary Kittleson a biologist is trying determine whether the conservation efforts are helping or not.
  • Many steps have been taken to find  the frogs and conserve them.

In the east of swamp in Santa cruz , Califorina,  Gary Kittleson a biologist and young explorer is trying find the rare red legged frogs. A local trust has hired him, to determine whether their number is growing or decreasing.

The Area called Watsonville Slough is a important habitat for the red legged frogs.

These frogs lost their habitat due to over hunting for frog legs and development, and now it is listed as threatened under the Endangered Species Act.

Kittleson says it is not a job to spot frog in thick brush and pick out their sound and differentiate from other frogs. The people who have untrained ears wouldn’t able to do it. But Gary is an expert and is capable listing to them even while talking.

But this method is an old way of counting animals and it requires lot of time and man power too. With just Kittleson one could get only a small size of data because he can’t be there the whole time.

Hence the local trust of Santa Cruz has also partnered with Conservation Metrics a company which specialises in protecting and conserving biological matters. The company and Kittleson have setup song meters – little green boxes with microphones that record all night and capture everything.

Data recorded in the song meter is then uploaded in computer and the company employees little green boxes with microphones that record all night and capture everything.  What would normally take a whole team of field biologists can now be done by one person and a computer says Matthew Mckown CEO of Conservation Metrics.

“Our whole point is to make conservation better, so we are trying to make it as cheap as possible,” he says.

Conservation Metrics was found three years ago. Mckown believes big data is the hot tool in conservation to study endangered animals and threatened habitats.

“What you’re going to start having is cameras, acoustic sensors, satellites trained on these important parts of the world,” he says.

Kittleson stays in the Watsonville Slough where night has fallen and he finally spots one and says “Beautiful. Adult red-legged frog,”

He is not too optimistic about the future of the red legged frogs. But he says good data is the only way to know if conservation efforts are helping.

by Bhaskar Raghavendran

Bhaskar is a graduate in Journalism and mass communication and a reporter at NewsGram. Twitter handle: bhaskar_ragha

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Architecture of US Homes Tell Story of America

From colonials to Victorians to ranch-style houses and McMansions, the story of American residential architecture is that it tends to be eclectic

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america, architecture, US homes
A home built in the colonial style in New Castle, New Hampshire. (Photo by Carol Highsmith) VOA

The architecture of American homes is a lot like America itself, a hodgepodge of different styles from different countries often melded together into one whole.

From colonials to Victorians to ranch-style houses and McMansions, the story of American residential architecture is that it tends to be eclectic.

“The history of American residential architecture has always been kind of like an all-you-can-eat buffet,” says architect Susan Piedmont-Palladino, director of Virginia Tech’s Washington Alexandria Architecture Center. “We can borrow anybody’s style of architecture and I’m not sure that’s the attitude in other countries around the world. I also think we’re dominated by the single family house in a way that other places aren’t.”

US homes, america, architecture
Castle Rock, completed in 1950 in Quasqueton, Iowa, is one of famed architect Frank Lloyd Wright’s most complete “Usonian” homes. (Photo by Carol Highsmith) Photo: Library of Congress. VOA

What that single family home looks like can vary.

“Most houses built today do not reflect any one style, but integrate ideas from many cultures,” Jackie Craven, a journalist who specializes in architecture and fine arts, told VOA via email. “A single house can have a French-inspired mansard roof, Grecian columns, and English Tudor-inspired timbering. Our homes, like our people, draw from many sources.”

architecture, america, US Homes
Built in 1930, this neoclassical Georgian home in Dallas, Texas, is a near-replica of George Washington’s Mount Vernon home in Virginia. (Photo by Carol Highsmith). VOA

After the American Revolution, the architecture of public buildings often borrowed from Greece and Rome to express democratic ideals of order and symmetry. This neoclassic style also extended to private homes, notably Thomas Jefferson’s Monticello and George Washington’s Mount Vernon.

The long reign of Britain’s Queen Victoria, from 1837 until 1901, occurred during a time of American prosperity. Mass-production of building parts allowed for the construction of elaborate, affordable Victorian-style houses throughout the country.

US homes, architecture, america
The Pollock-Capps House is a Victorian mansion built in 1898 in Fort Worth, Texas. (Photo by Carol Highsmith). VOA

The style of American homes has often reflected what the country itself is experiencing.

“During the Industrial Revolution, steel transformed the American landscape. The strength of this new metal made skyscrapers possible, rebuilding Chicago after the Great Fire of 1871,” says Craven. “The lavish Gilded Age mansions of the late 1800s and modern-day McMansions both reflect the conspicuous consumption of a powerful wealthy class. Minimalist post-Victorian architecture rebelled against excess, and the 20th century brought new solutions for affordable housing. Catalogue companies like Sears sold mail order house kits, making home ownership achievable even during the Depression.”

US home, architecture, america
The Rosenbaum House, built in Florence, Alabama, in 1939, is the only structure designed by Frank Lloyd Wright in the state. (Photo by Carol Highsmith). VOA

The architect who most defined American residential architecture might well be Frank Lloyd Wright, who eschewed the idea of borrowing architecture from Europe or anywhere else.

In the first half of the 20th century, up until the 1950s, Wright’s designs and philosophy brought a new American modernity to the single family home. He pioneered housing features — such as low horizontal lines and open floor plans — that can still be found in suburban America today.
us home , america, architecture
A Cape Cod-style home, a simple, rectangular structure, in Cape Cod, Massachusetts. (Photo by Carol Highsmith) VOA

“He was very interested in a relationship with the land…this idea of relating terraces and the gardens and the landscape into the house…the roof would extend out, blurring the boundaries between inside and out,” Piedmont-Palladino says. “Wright really pioneered the unique architecture, and little bits of it do still show up. There’s a little Frank Lloyd Wright DNA in split-level houses and ranch houses still.”

The simple Cape Cod, a derivative of American colonial houses, and the ranch house, more reflective of America’s modernism, both dominate all of the other residential architectural styles in the United States, according to Craven.

US home, architecture, america
A ranch-house-style home in Sun City, a historic suburb of Phoenix, Arizona. (Photo by Carol Highsmith) VOA

Wright would probably be horrified by today’s oversized neo-colonials. Derisively dubbed ‘McMansions,’ these homes borrow loosely from classic architectural styles of the past.

What will the next dominant style of American house be? Piedmont-Palladino is concerned that the home-building industry doesn’t appear prepared to take on the challenge of building better-performing houses.

america, us homes, architecture
Today’s eclectic oversized houses, built in traditional styles, seen here in St. Louis, Missouri, have been referred to as “McMansions.” (Photo by Flickr user Paul Sableman via Creative Commons.) VOA

“I would like to be optimistic and think that, in a generation, the dominant language of American house construction is sustainable and that we would start to look at building environmentally responsibly, so that houses perform better. This is one of the big issues that is confronting us,” she says. “Houses are getting bigger and bigger and less efficient, even as our families are getting smaller.”

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In addition to eco-friendly designs, Craven also envisions more avant-garde architecture with unusual shapes. New digital software can easily manipulate classic shapes, giving them a curvy or lopsided twist that could hit home in a modern way. (VOA)