One of the main challenges facing many countries is how to maintain their identity in the face of globalization and the growing multi-language trend. "One of the main reasons for economic failure in many African countries is the fact that, with a few important exceptions, mother-tongue education is not practiced in any of the independent African states." said Neville Alexander, Director of the Project for the Study of Alternative Education in South Africa at the University of Cape Town.

    In response to the spread of English and the increased multi-language trends arising from immigration, many countries have introduced language laws in the last decade. In some, the use of languages other than the national language is banned in public spaces such as advertising posters. One of the first such legal provisions(规定) was the 1994 "Toubon law" in France, and the idea has been copied in many countries since then. Such efforts to govern language use are often considered as futile by language experts, who are well aware of the difficulty in controlling fashions in speech and know from research that language switching among bilinguals is a natural process.

    It is especially difficult for native speakers of English to understand the desire to maintain the "purity" of a language by law. Since the time of Shakespeare, English has continually absorbed foreign words into its own language. English is one of the most mixed and rapidly changing languages in the world, but that has not been a barrier to acquiring superiority and power. Another reason for the failure of many native English speakers to understand the role of the state regulation is that it has never been the Anglo-Saxon way of doing things. English has never had a state-controlled authority for the language, similar, for example, to the Academic Francaise in France.

    The need to protect national languages is, for most western Europeans, a recent phenomenon—especially the need to ensure that English does not unnecessarily take over too many fields. Public communication, education and new ways of communication promoted by technology, may be key fields to defend.

    Across Britain, burnt toast will be served to mothers in bed  this morning as older sons and daughters to deliver their supermarket bunches of flowers, But, according to a new study, we should be placing a higher value on motherhood all year.

    Mothers have long known that their home worked was just heavy as paid work. Now, the new study has shown that if they were paid for their parental labors, they would earn as much as￡172,000 a year.

    The study looked at the range of jobs mothers do, as well as the hours they are working, to determine the figure. This would make their yearly income ￡30, 000 more than the Prime Minister earns.

    By analyzing the numbers, it found the average mother works 119 hours a week,40 of which would usually be paid at a standard rate 79 hours as overtime. After questioning 1,000 mothers with children under 18,it found that ,on most days, mums started their routine work at 7am and finished at around 11pm.

    To calculate just how much mothers would earn from that labor, it suggested some of the roles that mums could take on, including housekeeper, part-time lawyer, personal trainer and entertainer. Being a part-time lawyer, at ￡48.98 an hour, would prove to be the most profitable of the “mum jibs”, with psychologist（心理学家）a close second.

    It also asked mothers about the challenges they face, with 80 percent making emotional（情感的）emand as the hardest thing about motherhood.

Over a third of mums felt they needed more training and around half said they missed going out with friends.

    The study shoes mothers matter all year long and not just on, Mother's Day. The emotional, physical and mental energy mothers devote to their children can be never-ending, but children are also sources of great joy and happiness. Investing（投入）in time for parenting and raising relationships is money well spent.

    Sambodromo Samba Parade tickets for Rio carnival

    Order on this page your Rio Carnival tickets for the Samba Parade in Rio's Sambodromo.

    Benefit from our unique advantages. Read the Sambodromo ticket and order description first.

Covered Grand Tier Boxes—Yellow on the map

    The boxes in Sector 7 have been covered to offer an enjoyable Parade experience even in the rain. These boxes are more comfortable than the other boxes since the 12 seats are cushioned（带坐垫的）and they also have a coffee table.

    Price for per seat is $ 70.

    Luxury Suite Lounge Carioca—Purple on the map

    The goal of Lounge Carioca in Sector 5 is to reach those who look for a new product to attract, conquer and make new business. It has privileged location -the center of the Avenue! In our cabin we will have ample and comfortable space for our guests to watch the parades in a unique structure.

    Price for per seat is $ 90.

    Luxury Suite Lounge Folia -Red on the map

    This leisure area between Open Front Boxes of Sector 6 and 8 is for 1,000 rather-party-minded people and contains a beauty salon, a dance floor with DJs and has some space also to relax and watch the Parade on a giant screen.

    Price for per seat is $ 100.

    Luxury Suites -Blue on the map

    These covered boxes in Sector 9 are the best places. They are at the right height to offer the perfect view of the Parade, being above the front boxes. You can buy individual seats in the desired suite or rent a whole suite for a particular night.

    Price for per seat is $ 120 and $ 260 for a whole suite.

    During the past Spring Festival, many children may have received red packets from their families. But Xing Pu, a 40-year-old economist, is asking the government to give red packets to every Chinese citizen.

    Xing suggested the government give out 1,000 yuan to each Chinese since the government income has increased rapidly in recent years. He said his suggestion would allow everyone to directly enjoy the fruits of the country's economic success, help the lower-income groups deal with rising prices and increase consumption (消费) around the country.

    Recent years have seen the government carry out a series of pro-poor (扶贫) and pro-rural (惠农) policies, including increasing spending on public healthcare and calling off the agricultural tax. But the lower-income group still needs more help while being hit hard by an 11-year high in prices and recent snowstorms.

    Xing said while making the draft, he has borrowed many ideas from practices in countries like the United States and Singapore. Earlier this year, the governments of the two nations offered money to their citizens as the result of a surplus in government income. As for in China, "We can even encourage the rich to donate their 1,000 yuan red packet to the poor," said Xing.

    Although Xing's suggestion has gained wide support among ordinary Chinese on the Internet, many other economists criticized it as unpractical. Even Xing himself admitted he made the suggestion without any careful calculation. But they agreed with Xing's point that the growing economic pie should be shared among the people.

    "To better use the increase of money, handing out money is not a solution that holds good for all time. It could be better to improve the public service or cut the price of energy used in daily life," said QiaoXinsheng, an economic professor.

    The Dunning-Kruger effect is a type of cognitive bias (偏见) in which people believe that they are smarter and more capable than they really are. Essentially, low ability people do not possess the skills needed to recognize their own incompetence. The combination of poor self-awareness and low cognitive ability leads them to overestimate their own capabilities. This phenomenon is something you have likely experienced in real life, perhaps at a holiday family gathering. Throughout the course of the meal, a member of your extended family begins spouting off on a topic, boldly announcing that he is correct and that everyone else's opinion is stupid, uninformed, and just plain wrong. It may be plainly evident to everyone that this person has no idea what he is talking about, but he talks continuously, blithely oblivious (忘乎所以) to his own ignorance.

    The effect is named after researchers David Dunning and Justin Kruger, two social psychologists. They found incompetent people are not only poor performers, they are also unable to accurately assess and recognize the quality of their own work. These low performers were also unable to recognize the skill and competence levels of other people, which is part of the reason why they consistently view themselves as better, more capable, and more knowledgeable than others.

    This is the reason why students who earn failing scores on exams sometimes feel that they deserved a much higher score. They overestimate their own knowledge and ability and are incapable of seeing the poorness of their performance.

    “In many cases, the incompetent are often blessed with an inappropriate confidence, encouraged by something that feels to them like knowledge.” Dunning and his colleagues have also performed experiments where they ask respondents if they are familiar with terms related to subjects including politics, biology, physics, and geography. Along with genuine concepts, they added completely made-up terms. In one such study, approximately 90 percent of respondents claimed that they had at least some knowledge of the made-up terms.

    So what can you do to gain a more realistic assessment of your own abilities? Instead of assuming you know all there is to know about a subject, keep digging deeper. Once you gain greater knowledge of a topic, the more likely you are to recognize how much there is still to learn. Another effective strategy involves asking others for constructive criticism. While it can sometimes be difficult to hear, such feedback can provide valuable insights into how others perceive your abilities. Even as you learn more and get feedback, it can be easy to only pay attention to things that confirm what you think you already know. In order to minimize this confirmation bias, keep challenging your beliefs and expectations and seek out information that challenges your ideas.

    A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

    "It's extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components," said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. "The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own," he said.

    They engineered a series of systems to start and drive the robotic fly. "The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it's connected to," said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

    While this first robotic flyer is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers' fields or on the battlefield. "Basically, it should be able to take off, land and fly around," he said.

    Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. "You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead," he said. "So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis."