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admin | Category: Reverse Phone Lookup Usa | 19.08.2014
Professor Taek Kwon and graduate students Ryan Weidemann and Scott Klar show components of the sensor network. Engineers analyzing intersection traffic are often forced to rely on manual data collection—workers recording the movements of vehicles through the intersection using handheld data loggers, an approach that is both tedious and error-prone.
The prototype sensor nodes are similar in size and shape to typical raised pavement markers, and the fiber­glass housings are strong enough to protect the sensitive electronics inside when vehicles drive over them.
In operation, each sensor node in an intersection registers the magnetic disturbance caused by a vehicle passing directly over it and transmits the exact time of that event through the mesh network to a data logger positioned nearby. The tracking algorithm used by the mesh sensor sys­tem is a type of multiple target tracking (MTT) algorithm. Testing of the sensors and tracking algorithm in both a traffic simulator and a real intersection installation have shown that the system can be a useful tool for engineers to count vehicle turning movements, according to Kwon.
It looks like Los Angeles is going to be the first city to install the Philip’s SmartPole street lights.
By installing the Philips’ SmartPole system LA will also become the first city in North America to control and monitor its street lighting using CityTouch. The standard Em50G uses an internal cell modem to automatically send data to an internet server four to six times a day (contact Decagon for more frequent data delivery options). See signal strength and connection quality in real time as you pick the best spot for your data logger.
Transmitted data is backed up in the data logger memory to give you an extra layer of data protection. Research by electrical and computer en­gineering professor Taek Mu Kwon aims to automate the process with small wireless sensor nodes that are easy to install temporarily on the road surface.
In a mesh topology, data can hop from node to node to reach a destination, rather than being trans­mitted directly to and from a central point. Nodes can be deployed quickly by simply attaching them to the pavement with sprayable adhesive; when data collection is complete, they can be pried off the pavement with a screwdriver and used again.
The nodes’ communication protocol ensures that their internal clocks are synchronized, so the timing of every vehicle detection event is recorded accurately.


The routers send detection data from the sensors to the coordinator, located at the site from which the photo was taken, slightly uphill from the sensors. Originally developed for military applications such as ra­dar tracking of multiple aircraft, MTT algorithms are now used in commercial data collection systems due to the availability of powerful and inexpensive hardware and software technology. Future refinements of the tracking algorithm and the physical sensor design have the potential to make the system even more accurate and useful. CityTouch is another Philips technology that allows users to monitor and control the lighting. Rather than having a screen and a keyboard, the Em50G is configured by plugging a laptop into its comm port.
This feature lets you test connectivity at your measurement site BEFORE you install the logger. Kwon also directs the Transportation Data Research Laboratory (TDRL) on the University of Minnesota Duluth campus and has led several research projects to improve traffic data collection and develop new sensor systems. The sensors are particularly suitable for short-term installation because each one is powered by its own battery and mounted on the road surface with an adhesive, but they can also be connected to an external power source for longer-term applications.
The tracking algorithm then matches events recorded by entrance nodes to events recorded by exit nodes, producing a set of node-to-node trajectories representing the movements of individual vehicles. ECH2O Utility software (included) provides setup windows which name the logger, set the logger clock, select the type of sensor on each port, and specify how often you want the sensors read. Kwon’s sensor network strikes a balance between flexibility and complexity via a partial-mesh topology, in which each sensor is connected to at least two other nodes in order to provide alternative data routes, but not to every other node in the system.
Based on these tracks, an MTT system can determine the number of current objects being tracked, compute their velocities, and predict likely future trajectories. Understanding this wide variation in types of cybercrime is important as different types of cybercrime require different approaches to improving your personal andA  network safety.A Symantec draws from the many definitions of cybercrime and defines it concisely as any crime that is committed using a computer or network, or hardware device. The computer or device may be the agent of the crime, the facilitator of the crime, or the target of the crime. For example, the victim unknowingly downloads a Trojan horse which installs a keystroke logger on his or her machine.


For example, the target is contacted in a chat room by someone who, over time, attempts to establish a relationship. Or, members of a terrorist cell or criminal organization may use hidden messages to communicate in a public forum to plan activities or discuss money laundering locations, for example.a€?A It is generally facilitated by programs that do not fit into under the classification crime ware. IM allows users to relay messages to each other in real time for a "conversation" between two or more people. Because many IM systems have been slow to add security features, hackers have found IM a useful means of spreading viruses, spyware, phishing scams, and a wide variety of worms. This term refers to any "malicious software" created to damage or illegally access a computer or network. Often these messages will appear to be from a friend, a bank or other legitimate source asking for personal information such as names, passwords, Social Security numbers or credit card information. These messages might also direct users to phony Web sites to trick users into providing personal information. When slipped into a drink, a dye in these new pills makes clear liquids turn bright blue and dark drinks turn cloudy. But this color change might be hard to see in a dark drink, like cola or dark beer, or in a dark room. Legitimate institutions, such as banks, do not send e-mail or IM of this nature due to security concerns on the Internet. A macro virus infects the executable code embedded in Microsoft Office programs that allows users to generate macros.A Worm Similar to how a worm burrows through an orchard apple making it inedible, a computer worm is a program built to reproduce itself and spread across a network, rendering it ineffective.



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