ARNOLD Schwarzenegger is back, once again taking on his iconic killer robot role, the T-800, in August's new movie Terminator Genisys. While the T-800 model—even if it can be evil—has a fond place in moviegoers' hearts, the reality of autonomous machines is no joke, according to scientists.

    Autonomous weapons use artificial intelligence (AI) to choose targets without human help. They were described as “the third revolution in warfare, after gunpowder and nuclear arms” in an open letter signed by over 1,000 important technology figures in July. The list included British scientist Stephen Hawking and Apple co-founder Steve Wozniak. They asked governments around the world to ban autonomous weapons, warning that killer robots could start ethnic cleansings and an arms race.

     “They will look like tanks. They will look like battleships. They will look like jet fighters,” UK robotics professor Noel Sharkey told CNET, a leading technology website.

    But unlike these machines, which require a human hand in their action, so-called “killer robots” would have some decision-making abilities and the ability to act on their own.

     “If any major military power pushes ahead with AI weapon development, a global arms race is almost inevitable,” said the letter released at the 2015 International Joint Conference on Artificial Intelligence in Buenos Aires, Argentina.

    The idea of an automated killing machine was made famous by Schwarzenegger's first Terminator movie in 1984. While no red-eyed robots have been sent after human beings, the idea of AI being used as a weapon has gotten much more likely in the years ever since. The US military is already developing autonomous flying vehicles that can carry out all the steps of a strike mission without a human controlling them, according to a May report in Nature magazine.

    Scientists have even painted a destructive picture of autonomous weapons falling into the hands of terrorists or warlords hoping to carry out ethnic cleansings.

     “The development of full artificial intelligence could lead to the end of the human race,” Hawking said to the BBC in 2016.

Authorities are gradually waking up to the risk of robot wars. Last May, for the first time, the United Nations brought governments together to begin talks on autonomous weapons systems.

    Still, a ban on autonomous weapons is “easier said than done”, commented The Guardian. The dual (双重的) uses of the AI technology—for harm and for good—is difficult to manage. This is because the exact same technology can be used in a wide range of ways, the paper said.

    Early birds-people who feel most energetic in the morning-tend to make healthier food choices throughout the day than night owls(夜猫子) , according to a new study.

    "Evening types had more irregular meal times," notes study author Mirkka Maukonen, studying human nutrition and obesity(肥胖) in Finland.

    Her study focused on people's risk of heart disease and their eating habits. Participants described when and what they had eaten during the past two days.

Maukonen's team then looked at l,854 people's lifestyle. After analyzing the data, the researchers found that both morning and evening people consumed approximately the same number of calories over a whole day.  However, night owls tended to eat their meals later than early birds. Before 10:00 am, night owls consumed less food than early birds. More of their calories came from sugar. After 8:00 pm, the night owls ate more sugar and fat. Meanwhile ,early birds ate more protein during both the morning and the evening hours.

    "Night owls tend to be less healthy than early risers," notes Courtney Peterson who studies diet and meal timing. "They are more likely to get heart disease or cancer. The fact that night owls tend to eat more junk food probably plays a role," Peterson says. "Other factors(因素) also can ruin a night owl's health. Night owls generally sleep worse," says Peterson. "Poor sleep has been linked to unhealthy food choices. "

    Peterson and Maukonen say night owls tend to have poor eating habits. But that doesn't necessarily mean that being a night owl makes a person a poor eater. It could be the reverse- eating poorly could affect people's sleep habits.

"The new findings should serve as a wake-up call to night owls. For them, the new results should encourage paying attention to healthier lifestyle choices," says Maukonen. 28. How did Maukonen do research about people's risk of heart disease?

    It was when I was walking to my office, trailed by three young people whose ages ranged from 16 to 25, flowing down the corridor behind me like the tail of a kite, that I thought of it for the first time.

    This could be because I am not actually a mother. Until recently, I was not a "real" stepmother either. But I have been living with the man who is now my husband, Bernardo for 10 years and in those 10 years, not only have his younger daughters spent every other weekend and half of their school holiday with us but also his son has lived with us full-time. In fact, when Bernardo asked me to move in, he asked his son for permission first.

    Being a step mum is hard enough but being a sort-of-step-mother is about the most awkward position a mature woman can find herself in. With my sort-of-steppies, I have occupied a place of influence, power and sometimes extreme anger by turns. I have stepped on a delicate path between being a grown-up friend, a bridge of influence with their father, the woman of the house, and a figure of authority – but not too much.

    Love the kids or hate them, you must always remember that no matter how much you cook, clean, hug, comfort and discipline, you will never actually count.

    To survive, I trained myself to love the stepkids as hard as I could, but not to care. It's a handy piece of good mental health trickery I recommend to anyone in my position. I can help with homework, yes, but not bother about the results of that homework. I can teach them good manners, but not care about the bad habits they learn at home. Semi-detached is the position.

    It's nearly exam time, so check out some of the best free apps(应用程序)around to help you manage the stress of exams and ensure you are studying effectively over the coming weeks.

Exam Countdown

    This app can help to remind you how many days, hours, and minutes you have until your exam. This can help to motivate you to hit the books before it's too late.

Block The Internet

    Are you constantly checking Facebook when you should be writing an essay? Or perhaps are you distracted by a battle in League of Legends? Download this app to get rid of online distractions by temporarily blocking Internet sites on your mobile. Simply add the websites you want to block and the period of time to block them for. Guarantee to get yourself focused on that assignment.

CBT-i Coach

    The US Department of Veterans (老兵)Affairs developed the app, CBT-i Coach, to assist with insomnia (失眠)and help people who would like to improve their sleeping habits. It provides several key parts: information about sleep and insomnia, strategies for improving sleep, relaxation skills and a helpful sleep diary.

Yoga(瑜伽)

    Yoga has great health benefits both for the mind and body and will help you to perform at your best while at university. Download a yoga app and have your own personal yoga instructor in your living room. You can choose from short or long workouts and have a qualified instructor teaching you how to do each pose(姿势). Choose from a variety of yoga routines and watch the instructional videos. Go on, stretch out those sore muscles.

    Jane Austen has often been considered a woman who led a narrow, inhibited life and who rarely traveled. These assertions are far from the truth. Jane Austen traveled more than most women of her time and was quite involved in the lives of her brother, so much that it often interfered with her writing. Like most writers, Jane drew on her experiences and her dreams for the future and incorporated them into her writing. Her characters reflect the people around her; the main characters reflect parts of herself. In Sense and Sensibility and Pride and Prejudice, Elinor Dashwood and Elizabeth Bennet reflect aspects of Jane Austen and dreams she had that were never fulfilled.

    The biographies about Jane Austen describe the facts of her life in a step-by-step manner. They tend to be repetitive since she did not leave behind a rich fabric of day-to-day life. Yet Jane Austen is known not because of the factual details of her life; she is not remembered two hundred years after her death because she had six siblings and was a wonderful aunt to her nieces and nephews. Rather, Jane Austen is remembered because of what she wrote. Only through reading her literature does one get a taste of the real Jane Austen, the Jane Austen who dreamed and made plans for the future that failed to materialize. Only by analyzing June Austen's characters do we get an understanding of the true author.

    Sense and Sensibility's Elinor Dashwood mirrors Jane Austen's strait-laced sense of propriety (礼节) and her concern and care about family members. For example, after her father died, Jane managed to gather herself together and send her father's pocket compass and pair of scissors to her brother Frank as a memento of their father. Elinor in Sense and Sensibility is the sister who holds down the family and discusses the practicality of situations. She too distributes cherished mementos of her father when he dies. Elinor is the sister who is concerned with the welfare of her relations and takes it upon herself to look after their well-being.

    Jane can also be considered the backbone of her family. After she dies, the family is not as close as they were during her lifetime. Jane became very close with two of her nieces, Fanny Austen and Anna Austen. She counseled them on men and marriage when they reached the age of choosing a suitor. She often helped with delivering her sister-in-law's babies. During her thirties, she lived with her brother Frank for several weeks. She cooked the meals for his family and cared for his children while his wife was confined to her bed. Like the character she creates in Elinor, she sticks by her family and helps them when they need her.

    Austen's life closely parallels that of Elizabeth Bennet in Pride and Prejudice. Austen begins the novel with the line, “It is a truth universally acknowledged that a single man in possession of a good fortune must be in want of a wife”. This statement reflects the opinion of the time that a woman had to be married or else she had no social standing. Just as Elizabeth and her sisters feel immense pressure to get married and procure a good match, so too did Jane. Until she was twenty-five she still retained a small spark of hope that she would one day marry and have children.

    The most significant similarity between Jane and Lizzy is their close relationships with their sisters. Jane and her sister Cassandra were extremely close. When they moved into a house in Chawton, they shared a bedroom. They were dependent upon each other and supported each other in all aspects of their lives. They supported each other's decisions and wrote to each other when apart. Lizzy and her older sister Jane were extremely close. They too supported each other's decisions and were always there for the other. They discussed suitors and marriage just as Jane and her sister must have done.

    All of Jane's female characters end up happily married, a state Jane herself never felt. A woman was defined in terms of her husband; if she did not marry, she had nothing. Well into her twenties, Jane still had dreams of getting married. When she was twenty-five, Harris Bigg-Wither, a brother of her good friends, proposed marriage to Jane. At first she accepted: she would become mistress of a large estate, and be able to ensure the comfort of her parents to the end of their days. Most importantly, she would have children and raise a family of her own. The next day, however, Jane reneged the proposal. She did not love him and did not want a marriage based on nothing but money. After this proposal, Jane gave up all hopes of ever having a family of her own. Instead, she fulfilled her dreams through her characters and found “passion” through them. All her characters marry for love (which happens to also be financially advantageous). They make Jane's dreams become a reality within her imagination. _____ . As children reflect upon the parents and often mirror aspects of their parents, so too did many of Jane's characters mirror herself and the people around her.

    The UNESCO has recognized the Chinese art of paper cutting on its Intangible Cultural Heritage List. But paper cutting is at the risk of disappearing.

    Voyo Woo, a Chinese immigrant, who loves paper cutting, worked hard to celebrate the ancient art form. With a keen interest in paper cutting, Ms Woo held a paper cutting exhibition at a shopping center near Washington. "I really love it. I get so much fun by doing it. So I'm just kind of hoping that more people will learn about this art which is about to disappear. I think it's time to take action. So I held it."

    Voyo Woo began to study paper cutting when she was a 14-year-old girl in southeastern China. Voyo Woo's teacher gave her extra training after class because Voyo Woo discovered a special love for it. Later, her beautiful paper cuttings won second prize in a national painting competition. "Paper is the easiest material that you can find. You can just turn it into beautiful art. I think it is like magic to me."

    Ms Woo came to the US after she finished college in 2008. She has been invited to show the art at a wide collection of events. She also has shown her skill and works at famous museums like the Smithsonian Institution's Freer and Sackler art galleries in Washington.

    "I saw so many people coming to me and asking me. They were amazed. I think it's important to introduce the art form to American people or anyone who is interested."

    Ms Woo placed examples of her art around her as she displayed paper cutting at the shopping center. Ann Russ, a shopper, was attracted by the nature of the work. She said it put her at ease. "I like to know about Chinese art, specifically because it's almost relaxing to put that much effort into it," Russ said.