Archive for ‘earthquakes’

02/10/2019

Commentary: New China turns 70, witnessing a golden age

BEIJING, Oct. 2 (Xinhua) — While turning 70 often signals the beginning of a person’s twilight years, for the People’s Republic of China (PRC) it marks a golden age full of hope and vigor.

The PRC celebrated its 70th birthday on Oct. 1. China’s transformation from an agricultural society isolated from the West into the world’s second-largest economy open wide is nothing short of a miracle.

More importantly, it has charted a new path for developing countries to modernize.

Seven decades ago, the war-ravaged country started from scratch. Observers are astonished at China’s large-scale modernization, its reduction of the number of people living in poverty and the sheer volume of its consumer market. Their heads have been turned not only because of the speed of the transition but also by the unique path taken to realize this great transformation.

Reflecting on its past and present, and through experimentation, China has identified and will continue down the right path — socialism with Chinese characteristics.

Reform is the engine of China’s miracle. There is no ready-made solution for the development issues facing China. From creating special economic zones to building free trade pilot zones, from carrying out family-based production contracts to revitalizing state-owned enterprises, China has been one of the most successful countries in piloting reforms over the past decades. Now the reform is more in-depth and more comprehensive in economic, political, cultural, social and ecological sectors.

The Chinese government stresses being effective and responsive to the public interest. Development outlines are far-sighted. For example, the five-year plans are made to deal with comprehensive aspects that concern human development: food, transportation, communication, environment, health and education. These plans are a priority for the government.

Of course these achievements could never have been realized without the leadership of the CPC.

From the people and for the people, the CPC has always upheld its principle of striving for the happiness of the people and the rejuvenation of the nation.

At a life-or-death moment, the CPC shouldered the mission of saving the nation from existential peril. After 28 years of bloody struggle, it led the Chinese people to overthrow the “three mountains” placed on their heads and put an end to the semi-colonial and semi-feudal society of old China. Gone are the days where any attempt to bully China with “fists” or “intimidation” would succeed.

Despite overseas doubts, misunderstandings and predictions that its survival would be short-lived, the CPC has stunned the world with its leadership, innovative theories and ability to unite and organize the people.

It abolished the agricultural tax that had been in place for more than 2,600 years; it established a political system in which people are masters of their own affairs; it did its utmost to help people shake off poverty and keep nearly 1.4 billion people well-off.

No ruling party in the world can match the CPC’s record of adhering to the truth, versing itself in self-reform and self-purification, and turning impossibility into certainty in the face of difficulties and challenges, again and again.

The 70-year journey was never smooth. Trials and hardships abounded. The Chinese people dealt with floods and massive earthquakes and guarded against SARS and financial tsunamis. Yet these twists and turns never blocked China’s way forward but made it more sober, determined and mature.

Today, more than at any other time in history, China is closer to, more confident and more capable of achieving the great rejuvenation of the Chinese nation. However, lofty goals are never easily reached.

The world has been undergoing tremendous changes unseen in a century. Resistant external forces and headwinds still remain. “Zero-sum game” and “superior civilization” mentalities, among others, are prevailing.

The CPC will continue to lead the Chinese people to fight trade bullying, blackmailing and hegemonism. Only the CPC can lead China to emerge as a stronger country.

It all started long ago, and the journey is far from over.

Source: Xinhua

09/08/2019

This tiny ‘cockroach robot’ could be the future of search and rescue when disasters strike

  • Chinese and US researchers take inspiration from the hardy insect to design a robot that moves fast and is hard to squash
A prototype soft robot, which is about the size of a postage stamp, was developed by a group of researchers from China and the US. Its design was inspired by the capabilities of the hardy cockroach. Photo: Handout
A prototype soft robot, which is about the size of a postage stamp, was developed by a group of researchers from China and the US. Its design was inspired by the capabilities of the hardy cockroach. Photo: Handout
Cockroaches are near-indestructible little creatures. These hardy insects have existed since at least 320 million years ago, outliving dinosaurs. A cockroach can also carry loads of up to 900 times its body weight, shrink to a quarter of its height to fit into small crevices and live for a week without its head.
Inspired by the qualities of this humble bug, a group of researchers from China and the United States have created a prototype of a fast-moving and near-indestructible miniature robot, which could potentially replace sniffer dogs in detecting people trapped in a rubble after a major earthquake or similar disastrous event.
Researchers from China’s Tsinghua University and the University of California, Berkeley, published their study on so-called soft robots in the academic journal Science Robotics last week.
“Although the cockroach is an annoying pest, it has certain interesting features, including the ability to move fast in a narrow space and being hard to squash,” said Zhang Min, an assistant professor at Tsinghua University’s Graduate School in Shenzhen and one of the study’s authors, in an email interview. “These features inspired us to develop a fast-moving and robust soft robot.”

Their work on soft robots was conducted under the Tsinghua-Berkeley Shenzhen Institute partnership, an initiative to collaborate with global researchers on fields such as environmental science and new energy technology.

Scientists have long taken inspiration from insects, including cockroaches, for engineering robots. Researchers from UC Berkeley previously developed a palm-sized, roach-like robot – about 20 times the size of the bug – for rescue use in 2017.

By comparison, the new prototype achieved breakthroughs in terms of size and more importantly, the speed and robustness.

The latest robot, which is about the size of a postage stamp and weighs less than one-tenth of a gram, is composed of a flexible piezoelectric thin film and a polymer skeleton with two legs.

This screenshot from a video provides a closer look at the prototype soft robot developed by a group of researchers from China and the US. Its features were inspired by the sturdy qualities of the humble cockroach. Photo: YouTube
This screenshot from a video provides a closer look at the prototype soft robot developed by a group of researchers from China and the US. Its features were inspired by the sturdy qualities of the humble cockroach. Photo: YouTube

Despite its petite frame, this prototype showed the fastest speed among insect-scale robots in a similar weight range, as well as “ultra-robustness”, according to Lin Liwei, a professor of mechanical engineering at UC Berkeley who directed the research, in a separate email interview.

It can move as fast as a cockroach with speeds of up to 20 body lengths per second. It also continued to move after it was stepped on by an adult human weighting 60 kilograms, which is about 1 million times heavier than the robot, according to the study.

In 2017, researchers of the PolyPEDAL Lab at the University of California, Berkeley, designed a compressible robot, CRAM, that was about 20 times the size of a real cockroach. Photo: Handout
In 2017, researchers of the PolyPEDAL Lab at the University of California, Berkeley, designed a compressible robot, CRAM, that was about 20 times the size of a real cockroach. Photo: Handout

Those features sets up the robot for potential application in disaster relief, a field in which its size, agility and resilience would be invaluable to help detect survivors trapped beneath the rubble in catastrophes, such as major earthquakes.

Earthquakes have caused much devastation in China, a seismically active country with the world’s biggest population. For example, about 87,000 people died and more than 370,000 were injured when a magnitude-8 earthquake struck Wenchuan, a county in southwestern China’s Sichuan province, in 2008.

“The key innovation is the soft materials and structures used in the robot,” Lin said. “If the robot is too soft, it won’t be able to move fast. If the robot is too stiff, it can’t withstand the force of human weight.” The study detailed how the right combination of soft materials and structure enabled the robot to operate efficiently.

While the robot is currently attached to thin cables for power, the researchers are working to integrate a battery and control circuit to get rid of the existing wire in its design, helping expand its use in other applications.

“We want to make the robot carry small sensors, like a gas sensor, to provide it with more functions,” said Zhong Junwen, a researcher at UC Berkeley and one of the authors of the study, in a separate email interview. “With such a sensor, the robot can detect harmful gas leakage.”

Source: SCMP

Law of Unintended Consequences

continuously updated blog about China & India

ChiaHou's Book Reviews

continuously updated blog about China & India

What's wrong with the world; and its economy

continuously updated blog about China & India