单选题

BUS CCTV Predict Assaults

CCTV security systems could soon spot an assault on a bus before it happens, according to a major research project.
The system, part of which has already been tested in laboratory conditions, looks for suspicious behaviour associated with crime. It would be able to send live CCTV pictures to operation rooms, from where controllers would be able to intervene.
The Queens University Belfast team say the software could make a significant impact on crime on transport. Although much of the work is currently at the theoretical stage, they predict that within five years their software will be able to profile people as they board a bus. The system would then compare who it thinks these people are, and what they are doing, with more general data on the bus's location, time of day and historic crime rates. Once it has sifted this data, it could be able to conclude whether someone is about to commit an assault and send live pictures to controllers.
Dr Paul Miller, head of the research project, said the 15-strong team were still developing initial databases to identify an individual's gender and body shape. However, the team say the system goes further by then looking for recognised signs of an imminent criminal offence. These signs include someone moving seats shortly before an assault, groups closing in on a passenger sitting alone and people loitering on a double-decker's stairwell, or close to the driver's cab.
The system would only alert a controller if the sum of all of these" atomic events" added up to the Drofile of a possible crime. "The system won't be able to say, 'this is an incident' —but it will be able to push that video stream to the top of the queue for security analysts [in a control room] to make a decision, "said Dr Miller." Ultimately, most of the events will be benign, with nothing going on. That's why you still need the human element. "
Dr Miller said that laboratory tests on gender recognition, based on a database of 4,000 faces, had proved successful and the project would move into testing systems on buses over the next year. "Research shows crimes happen when there is an opportunity and no chance of payback," he said. "If a security analyst can directly communicate with the assailant, to tell them they are being watched, it will have a marked effect on the offender. Just one example of this actually happening can have a deterrent effect on the crime rate in an area. /

单选题 What research project is the Queens University Belfast team working on?

单选题 What stage has the CCTV security system reached?

单选题 How would the system work according to the Queens University Belfast team?

【正确答案】 A

【答案解析】考察具体事件的方式。从文章第二段第二句以及文章的第三段最后一句我们可以得知：系统通过筛选数据得出结论是否这人会做出袭击行为，并将现场的画面传到操作室，操作室的监控员能及时介入(It would be able to send live CCTV pictures to operation rooms, from where controllers would be able to intervene. Once it has sifted this data. it could be able to conclude whether someone is about to commit an assault and send live pictures to controllers)。由此可见，系统并不会直接与司机、乘客或是嫌疑人交流。该题正确答案为A。

单选题 Which of the following is NOT included in the signs of all imminent criminal offence that the system will look for?

【正确答案】 D

【答案解析】考察文章大意。由题干关键词“signs of an imminent criminal offence”定位到第四段第三句These signs include someone moving seats shortly before an assault，groups closing in on a passenger sitting alone and people loitering on a double—decker's stairwell, or close to the driver's cab(这些信号包括某人在袭击前快速移动座椅，很多人围坐在一名乘客周围，在双层巴士的楼梯上闲荡，接近司机驾驶室)。只有答案D没有提及，因此正确答案为D。