A mechanical bicycle lock, like a U-lock, should be attached to a solid and immobile object like a rack (架子) to ensure safety. However, these racks are quite rare and popular, thus often occupied and although a bicycle lock prevents the bike from being carried away, as it fixes single parts like the frame or the wheels, other parts can be dismounted. Therefore an electronic system, consisting of several sensors, can extend the range of protection with only few components and less effort.

    The ‘FID Bikealarm' is a motion sensitive electronic alarm system that is attached to the rails of a bike saddle (座椅). Featuring omnidirectional (全方位) movement sensing to detect tiny movements or speeding-up and a small whistle emitting >120dB alarm sound to scare off potential thieves by arousing attention.

    The internal microcontroller uses a complex computer program to distinguish between a serious theft and harmless shaking movement as it senses and adapts to the environment. The usage is quite simple: identify yourself by holding the RFID tag close to the case to lock or unlock the alarm system signaled by feedback sounds. The RFID-technology is predestined for achieving this simple and secure interaction because it doesn't require any complex system, interaction or other devices—just a small tag.

    The ‘RFID Bikcalarm' is meant to be a useful add-on to mechanical bicycle locks as it massively extends the range of protection with few components. It is low-cost, durable and easy to use. The internal battery can be charged by USB.

    Most of us feel very tired after working for eight hours a day, five days a week. When we get home, we watch at least one film because it's well-deserved and the only time we get to "relax" before going to sleep. Wake up and repeat. No wonder you feel tired. So how do you get out of this vicious circle? How do you restart your life?

    ⒈YOUR MINDSET

    "Oh man, another one of these self-improvement things. I hope I can do it, but I've tried these things before, and I just never stick to it."

    This was something I used to say to myself every time I try to start something new for myself. There's a fear-driven side of your brain which tells you, "You can't do this."

    What can you do? Well, the tip here is to talk to yourself like you're talking to a friend, or a coworker. So the next time you try something new, be kind to yourself like you would be kind to others. You are your own worst critic. But you can also be your firm defender.

    ⒉YOUR DIET

    If you are looking at what you eat for the reason to feel energized, then the general rules are:

    1) Eat when you're hungry. Don't eat when you're not.

    2) Be mindful when you eat. Chew at least 20 times. Let yourself taste and digest your food.

    3) Don't do three things at once when you're eating. Your body wasn't made for that.

    4) Preferably, eat "real" food. Eat what your great-grandmother would recognize as food.

    Don't let your days pass by in a boring way. Start by re-examining these key habits in your life to build a body that can start doing things you want.

    ⒊YOUR SLEEP

    Without enough sleep, we're basically going through the day drunk. This means tiredness, difficulty to respond quickly and smartly to anything that comes up. The sleeping hours needed for an average adult ranges from 7 to 9 hours.

    Opened in September 2005, Hong Kong Disneyland is the second Disney Park in Asia. It experienced a difficult time upon its opening. The Park, as well as two themed hotels, was built on Lantau Island.

    The Park opened to strong competition in the form of Ocean Park. Hong Kong Disneyland is one of only two parks in Hong Kong, which has become one of the world's leading cities in recent years. It kept Chinese cultural traditions in mind when they built the Park to avoid a cultural backlash (抵制). Designers added to the custom of Feng Shui.

    Disney and Hong Kong announced the Park in 1999, and construction (建设) began in 2003. The Park had one of the shortest construction periods in Disney history. Disney actually announced that the opening of the Park would be brought forward, from 2006 to September 2005.

    The Park attracted 5.2 million visitors in its first year, below the expected 5.6 million. There was a lack of attractions, with Fantasyland opening with just one dark ride. Summer Passes were announced to increase the number of tourists. Autopia, Stitch Encounter and it's a Small World opened between 2006 and 2008 to offer more attractions at the Park.

    The number of tourists dropped in 2007 to just over 4 million, so Disney planned a big expansion (扩大) project to attract more tourists and bring the Park back to its normal level. In July 2009, the Legislative Council of Hong Kong passed a three-land expansion of Hong Kong Disneyland, and in 2010, Toy Story Land opened.

    These new attractions have certainly paid off, with the Park earning record profit (盈利) in 2013. In that year, over 7 million guests entered the Park.

    With enough room for a second Park and the promise of more attractions to come, it seems that there is indeed a great beautiful tomorrow for Hong Kong Disneyland.

How Much Can We Afford to Forget?

    In 2018, Science magazine asked some young scientists what schools should teach students. Most said students should spend less time memorizing facts and have more space for creative activities. As the Internet grows more powerful, students can access(获得)knowledge easily. Why should they be required to carry so much of it around in their heads?

    Civilizations(文明)develop through forgetting life skills that were once necessary. In the Agricultural(农业的)Age, a farmer could afford to forget hunting skills. When societies industrialized, the knowledge of farming could be safe to forget. Nowadays, smart machines give us access to most human knowledge. It seems that we no longer need to remember most things. Does it matter?

    Researchers have recognized several problems that may happen. For one, human beings have biases (偏见), and smart machines are likely to increase our biases. Many people believe smart machines are necessarily correct and objective, but machines are trained through a repeated testing and scoring process. In the process, human beings still decide on the correct answers.

    Another problem relates to the case of accessing information. When there were no computers, efforts were required to get knowledge from other people, or go to the library. We know what knowledge lies in other brains or books, and what lies in our heads. But today, the Internet gives us the information we need quickly. This can lead to the mistaken belief — the knowledge we found was part of what we knew all along.

    In a new civilization rich in machine intelligence, we have easy access to smart memory networks where information is stored. But dependency on a network suggests possibilities of being harmed easily. The collapse of any of the networks of relations our well-being(健康)depends upon, such as food and energy, would produce terrible results. Without food we get hungry; without energy we feel cold. And it is through widespread loss of memory that civilizations are at risk of falling into a dark age.

    We forget old ways to free up time and space for new skills. As long as the older forms of knowledge are stored somewhere in our networks, and can be found when we need them, perhaps they're not really forgotten. Still, as time goes on, we gradually but unquestionably become strangers to future people.

    Your teenage best friend could be good for your long-term mental health, according to a new study published in the journal Child Development According to the findings, teenagers aged 15 to 16 who had a close friendship rather than a larger group of friends they were less close to had a greater sense of self-worth by the time they were 25 years old. Those people with a very close best friend were also less likely to experience depression and social anxiety, the study found.

    "Close friendship strength in mid-adolescence predicted relative increases in self-worth and decreases in anxiety and depressive symptoms by early adulthood, "the authors, led by Rachel K, Narr, a postdoctoral student focused on clinical psychology at the University of Virginia, wrote.

    A past research has suggested that adolescent friendships are important. Friendships during the teenage years predict academic success and improved mental health. But the new research further explores the type of friendships teenagers have. "My hunch(预感)was that close friendships compared to broader friendship groups and popularity may not function the same way," Narr told Quartz. "Being successful in one is not the same as being successful in the other."

    Many study participants did not continue to have a close relationship with their high-school best friend, leading the researchers to wonder what exactly was responsible for the mental health benefits. They suspected that the skills and ability to build such a friendship may be more important than the friendship itself.

    And as the researchers point out, those skills are not necessarily brought to bear in the world of social media. "As technology makes it increasingly easy to build a social network of shallow friends, focusing time and attention on developing close connections with a few individuals should be a priority," study co-author Joseph Allen said in a statement.

Nick Torrance, a junior in high school, suffers from muscular dystrophy, and attends school in a specialized wheelchair. The muscle disease prevents him from accomplishing many everyday tasks, such as carrying his books and putting things away in his locker. So he had a fellow student assigned to help him. But Amy Smith, the school's occupational therapist, thought that being able to do something simple like opening his locker on his own would be empowering.

Amy initially thought they would be able to buy a device to help. But searching online turned up nothing that could meet their needs—everything needed a keycode or some other physical action, things her disabled student couldn't do. After the outside search for a method came up short, she looked within the school itself for an answer. Amy turned to the school's robotics instructor.

The instructor, in turn, suggested that two of his most capable students take on the project: Micah Stuhldreher and Wyatt Smrcka. They took first place in a national robotics competition, so they were a natural choice to tackle the locker door problem with a robotics solution. Micah and Wyatt wasted no time getting down to work and for an hour each school day, the boys brainstormed, built, and rebuilt various versions of the device until they landed on the perfect solution one year later.

Like in any device development, it took a lot of trial and error for Micah and Wyatt to make something that would work for their target audience. For example, they initially built a locker-opening button, but Nick wasn't strong enough to push it, so they replaced it with a sensor.

Now, between classes Nick steers his electric wheelchair to his locker and waves his hand over a sensor on the arm of the wheelchair. A few seconds later, the locker door swings open. Another wave closes the door. Nick can make it with ease—it may be a small thing, but it gives him a sense of independence.