Students taking Georgia Tech's online Knowledge-Based Artificial Intelligence course received some surprising news. Jill Watson one of the nine teaching assistants(TAs) that had helped them finish the challenging course for the past five months was not a ‘‘she'' but an “it”—an intelligent robot!

    Watson is the brainchild of Ashok Goel, who teaches the popular online course. The Professor-of Computer and Cognitive Science in the School of Interactive Computing came up with the idea as a way to deal with a number of questions posed by students in the online forums(论坛). According to Goel, every time the course is offered, the 300 or so students that enroll post over 10,000 questions which are often repetitive. This led Goel to wonder if a smart robot would handle the questions which require standard responses.

    Having worked' with IBM's Watson technology platform in the, the professor knew it would be ideal for his artificial TA: Jill Watson. The artificial intelligence system that uses natural language processing and machine learning to analyze large amounts of data has even been cleverer than human competitors on the television show. It would therefore easily be able to handle routine questions that required little “thinking”.

    The professor and his team of graduate students began by populating Jill's memory with 40,000 questions and answers from past terms. Then came the testing stage. At first, Jill was not very good and often gave strange answers. It often got stuck on certain keywords. By the end of the semester, Jill had attained enough knowledge and skills to participate in forums without any management from Goel, or the other assistants.

    Maybe it has been the influence of the current scene: the type among urban biking. Apparently, urban biking requires entirely different bikes than suburban hiking does and therefore a Bike Design Project started where five design studios across five cities had to come up with a perfect urban bike. The winning bike will be manufactured for a limited run of 100 hikes and will be in stores next year. Industry, a Portland-based studio, came up with a very interesting bike: one that uses bluetooth and handlebars (车把手) that tell you when to stop or turn.

    Industry worked together with Ti Cycles to create a bike with a 3D printed titanium frame (钛框架). The hike is called Solid and can be connected to a smartphone APP: My Bike. This APP alarms a user when a light needs replacement and if something gets wrong with one's brakes. There is also software called Discover My City, which has a series of routes through Portland's most trendy neighborhoods, with suggestions about where to eat and shop.

    Nevertheless, the idea with cycling is that you need to focus on the road and not on your smartphone. This bike therefore uses integrated feedback on handlebars. Those handlebars tell a user when to turn, as they will buzz when a turn appears. As you are getting closer, they will buzz more frequently. And then there is the possibility to control your light via built-in sensors and change gears by pressing an electronic button.

    Although the bicycle looks highly interesting and can be seen as a piece of art for the designing world, we don't know if we would like our bike to have an automatic buzz when we are approaching a turn. On the other side, it could add some extra safety to traffic in general. Whether you like the bike or not, you have to admit the Portland-based studio brings the concept of urban biking to a whole new level.

    What's the most important thing in a piece of writing? Is it the story, the characters, the description, or the style? Obviously, you can't choose only one. A great work succeeds in combining all of them in a great mix, producing a wonderful work.

    In most cases, you're better at one writing element over the rest, and working on your strengths will work to your advantage. Building characters, however, is important to your writing. It's not to be ignored no matter what your case is. So, how do you achieve that?

Make Them Real

    This is probably one of the most common pieces of writing advice: make your characters believable. What does it really mean? It means that your characters need to be there for a reason, not just for pushing the story forward. He/She has a real life, with his/her own fears and dreams, and you have to show this. Your characters don't need to be typical to be believable. The unusual ones are even more interesting, but it's your job to make your readers relate to them.

Understand Human Psychology

    To build great characters, you'll need to understand people's psychology: what are they thinking about, what are they feeling and experiencing, and why are they doing what they are doing? Get behind the obvious. Be in the backstage with them. Sit them in a chair and let them talk away. If you truly listen, you will learn.

Be your character

    When you immerse (使沉浸) yourself in your writing, you get lost in that world and you start living in it. This is when the magic happens and you become your character. By putting yourself in your character's shoes, you allow yourself to experience what you're writing about first-hand. The more it feels real to you, the more the readers will feel the same, too.

    Now Glen doesn't like to think what might have happened had he and his best friends, Ray Wightman and Chris Johnson, picked their usual path along a rocky outcrop－the faster route to Johnson s home on Triangle Mountain. They were heading there after school that day－April 14, 1999－to play street hockey in Johnson's driveway. There were other lucky twists, too: not stopping at the shops to get a cola« as they usually did; hearing the strange cry.

    It was 3:30 pm. The three teens were laughing and talking when suddenly they heard a strange cry coming from the ditch(沟渠) across the road. Crossing to take a look, they found an Adidas gym bag sitting deep in the icy water. They climbed down the steep bank and pulled the bag from the water, expecting to find abandoned cats or dogs inside. Instead, the boys found a trembling newborn girl. Wrapped in an old blanket, wearing a thin nightshirt, she was almost blue, her lips shaking from the cold and her crying.

    The boys couldn't have been more astonished. They knew this one needed to get warm and dry, although they didn't know much about babies. Ray dug through his gym bag and wrapped her in a T-shirt. “We didn't know what to do,” said Glen. “I didn't think any of us had really held a baby before.” So the three stood beside the ditch, dumbfounded, taking turns to hold the baby to their chests to keep her warm.

    “We knew it was no use walking up to Ray's house, because his mum was working and no one would be home. We figured we'd have a better chance just staying by the road and flagging down someone.” So they stood there and waited.

    A car drove by and the boys caught the driver's attention, telling her that they had found a baby. The woman then drove off to get help. When the police and ambulance came 20 minutes later, the teens were told the baby was probably two or three hours old and had perhaps been in the ditch for an hour or more. They were also told that they had saved her life and that given 10-20 minutes more in the cold water, she probably would be drowned.

    Photos of the moon are beautiful if taken well, but it can be very hard to get a picture of the moon that doesn't look blurry! In order to take a perfect picture of the moon, apart from a high­quality camera, the associated equipment and the skills to set up your camera, you also need to pick a proper time and a good place.

    Choose your favorite moon phase. The moon can be photographed in any phase except the new moon, which is not visible to Earth. The first quarter, half, and third quarter phases provide high contrast that allows you to see the craters(坑) in greater detail, while the full moon is a dramatic choice for a skyscraper. What phase you choose is up to your personal preference, but it's best to have a phase chosen before going out to photograph the moon.

    Learn when the moon rises and sets. When the moon sets or rises, it is closer to the horizon, making it appear larger and closer. This makes it much easier to photograph! Check an almanac(年历) or a weather app for moon rising and setting times in your area.

    Pick a clear night. Clouds, fog, and air pollution will blur your photographs. Check a weather app or watch the weather forecast before leaving for your session and while photographing. A clear night with low smog content and no rain is best for moon photography.

    Choose a location away from direct light sources. The moon appears bright because it reflects the light of the sun, and additional light from streetlights, homes, and cars can make the moon appear duller and blurrier in pictures. It is fine if there is light in the distance, but be sure that you are not photographing close to another light source.

A Lesson Plan from Life Planning Education: A Youth Development Program

    Purpose: To learn about body language and how to use body language.

    Materials (材料): Cards; container

    Time: 25-35 minutes

    Planning Notes:

    ·Write the words below on cards:

    angry disappointed shy afraid sad happy nervous excited bored

    ·Place the cards in the container so volunteers can draw them out one at a time.

    Steps:

    First make sure that all volunteers know what body language means (expressing feelings through body movement and facial expressions). Go over the following instructions:

    ·I'll need at least 9 volunteers to play a game similar to charades (猜词游戏).

    ·The first volunteer will draw a card with a feeling written on it and act out the feeling without using words.

    ·The rest of the group will guess what feeling is being communicated. Once someone correctly guesses the feeling, the next person in line will draw a card and act out what is written on it, again without words.

    ·The game will continue until there are no more cards or until time is up.

    At last, end the activity using the discussion points below:

    ·Can you give examples of when someone's body language communicated a different message from what he/she actually skid?

    ·Sometimes one person is offended (冒犯) by another's body language. How can you work to keep that from happening? Answers may include: be honest and direct; match your nonverbal messages to your verbal ones; be aware of (清楚) cultural attitudes toward different kinds of body language.