Archive for the ‘Information’ tag
Tuesday, January 31, 2012
Holding information within one’s memory for a short while is a seemingly simple and everyday task. We use our short-term memory when remembering a new telephone number if there is nothing to write at hand, or to find the beautiful dress inside the store that we were just admiring in the shopping window. Yet, despite the apparent simplicity of these actions, short-term memory is a complex cognitive act that entails the participation of multiple brain regions. However, whether and how different brain regions cooperate during memory has remained elusive. A group of researchers from the Max Planck Institute for Biological Cybernetics in T?bingen, Germany have now come closer to answering this question. They discovered that oscillations between different brain regions are crucial in visually remembering things over a short period of time.
It has long been known that brain regions in the frontal part of the brain are involved in short-term memory, while processing of visual information occurs primarily at the back of the brain. However, to successfully remember visual information over a short period of time, these distant regions need to coordinate and integrate information.
To better understand how this occurs, scientists from the Max Planck Institute of Biological Cybernetics in the department of Nikos Logothetis recorded electrical activity both in a visual area and in the frontal part of the brain in monkeys. The scientists showed the animals identical or different images within short intervals while recording their brain activity. The animals then had to indicate whether the second image was the same as the first one.
The scientists observed that, in each of the two brain regions, brain activity showed strong oscillations in a certain set of frequencies called the theta-band. Importantly, these oscillations did not occur independently of each other, but synchronized their activity temporarily: “It is as if you have two revolving doors in each of the two areas. During working memory, they get in sync, thereby allowing information to pass through them much more efficiently than if they were out of sync,” explains Stefanie Liebe, the first author of the study, conducted in the team of Gregor Rainer in cooperation with Gregor H?rzer from the Technical University Graz. The more synchronized the activity was, the better could the animals remember the initial image. Thus, the authors were able to establish a direct relationship between what they observed in the brain and the performance of the animal.
The study highlights how synchronized brain oscillations are important for the communication and interaction of different brain regions. Almost all multi-faceted cognitive acts, such as visual recognition, arise from a complex interplay of specialized and distributed neural networks. How relationships between such distributed sites are established and how they contribute to represent and communicate information about external and internal events in order to attain a coherent percept or memory is still poorly understood.
Stefanie Liebe, Gregor M Hoerzer, Nikos K Logothetis & Gregor Rainer (2012) Theta coupling between V4 and prefrontal cortex predicts visual short-term memory performance. Nature Neuroscience, 29 January 2012, doi: 10.1038/nn.3038.
Thanks to Max-Planck-Gesellschaft for this article.
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LTO 4 Tape Technology Offers Increased Recording Capability and Economical Solutions ? Computers ? Hardware
A website that is the replication of another website. This type of websites are used as a response to spikes in user visitors. Mirror sites are most commonly used to provide multiple sources of the same information, and are of particular value as a way of providing reliable access to large downloads.
Websites about an individual or a small group (such as a family) that contains information or any content that the individual wishes to include. Many personal homepages are rare, thanks to the modern era of social networking sites such as Myspace, but some are still used for at home businesses. This website is different from a Celebrity website five finger shoes prices, which can be very expensive and run by a publicist or agency.
These days the I.T managers usually face the task of backing up massive amounts of information within backup windows. LTO3 tape is the most reliable and cost efficient medium for long term storage of your ? ?>HomeSubmit ArticlesAuthor GuidelinesPublisher GuidelinesContent FeedsRSS FeedsFAQContact UsUse and distribution of this article is subject to our Publisher Guidelineswhereby the original author?s information and copyright must be included. LTO 4 Tape Technology Offers Increased Recording Capability and Economical Solutions?? by Jessica McIntoshin Computers / Hardware ?? (submitted 2009-12-09)These days the I.T managers usually face the task of backing up massive amounts of information within backup windows. LTO3 tape is the most reliable and cost efficient medium for long term storage of your precious and critical data. LTO-4 tape technology has double the recording capacity than its predecessor LTO-3 media. The recording performance and advantages of LTO-4 ultrium technology are simply unparalleled. LTO-4 and LTO-3 tape formats deliver high class performance and cost efficient solutions in all demanding environments.LTO4 tape format features advanced technologies and compelling attributes that are demanded by the modern data intensive environments. Native 400GB capacity found in the ultrium-3 tape standard has been raised by 100% in the next LTO4 tape format. This means that the LTO-4 tape cartridge can backup up to 800 Gigabytes of precious information. Transfer speed of the 4th generation ultrium tape has been doubled to 120 Mb/sec which was 80 Mb/s in the ultrium-3 tape technology. LTO-4 tape format adds more to its advantages and uniqueness by offering the AES-GCM encryption mechanism which helps the users to secure their recorded data at lowest cost. Both the LTO-3 and the LTO4 tape formats offer the advantageous and cost saving feature of backward compatibility. Therefore this feature enables the IT managers to restore information that was backed up in the LTO media tapes of prior generation. The LTO-4 tape drives can read data from the ultrium-2 tapes but cannot record data on to them. On the other hand they can read and write information to the ultrium-3 tapes.Data throughput and performance level of the LTO-4 tape drives have been enhanced to deliver 50 percent faster transfer speed than the LTO-3 media technology. Encryption technology is the most reliable jordan women heels, economical and compelling of LTO-4 tape that has forced the enterprises to adopt the LTO-4 media tape standard. WORM is another very reliable mechanism available in both the LTO-4 and LTO3 ultrium tape technologies. The six generation roadmap of LTO ultrium format is well defined and specifically designed for growth, high performance nike dunk sb low, superior compatibility and scalability.LTO-3 is a powerful and highly durable storage format that addresses the increasing demands and needs of the modern age enterprises in a cost efficient manner. It is the ideal tape technology which serves with its increased media durability and high cost efficient results in the server and enterprises class backup environments. LTO-3 data tapes provide industry leading performance with high speed recording capability and massive recording capacity. Data can be interchanged among the different versions of LTO tape media as they are backward compatible. LTO ultrium 3 is the ideal backup storage technology that protects the investment in enterprise environments. The modern enterprises and SMBs are seeking more economical, powerful and high capacity tape technologies that offer high density recording at a fast rate with low error rate. LTO-3 and the 4th generation LTO-4 ultrium meet all these requirements of the businesses and secure their valuable data and prevent data loss.
Our website created to fraudulently acquire sensitive information, such as passwords and credit card details, When you want to get some thing from our site!
A site on which people may voice political views, show political humor, campaigning for elections, or show information about a certain political party or ideology.Then our site may be different others!A website that indexes material on the internet or an intranet (and lately on traditional media such as books and newspapers)and provides links to information as a response to a query.
Many individuals and families plan their business trips or vacation complex that makes every moment of the tour fun. This tour is planned well in advance to avoid last minute peg. Information relating to their travel, hotel accommodations, local attractions and local transportation are collected from the Internet or from travel agents. Of the many arrangements made for travel, whether business or leisure, securing car rental is an important consideration.
Upon reaching their destination, travelers are advised to seek information related to various car rental companies in town. Local newspapers and telephone directories is a good source of information for this purpose. After assimilating the list of various car rental companies, they should compare services and rates offered before making a decision. In the United States, there are many rental car companies are popular, some of them offer their services, nationally. Alamo is one such company, which offers a taxi on a weekly rental basis at a price range of $ 189 to $ 249 depending on the type of car being rented.
With some car rental companies, customers can pre-pay and save 15% on rentals weekdays and weekends. Most car rental companies provide a wide range of services including fuel and flexible coverage options and 24-hour emergency roadside assistance. There are special prices for corporate conference planning, convention and which require 11 or more cars at a time. Car rental is also available to American citizens planning a trip abroad.
Save Car Rental is a car rental company that provides rental cars in both markets the airport and local car rental. Through the stores collectively owned and franchises, car rental companies manage services in more than 1,100 locations in 64 regions.
Customers with a valid driver?s license and credit card with their name will find it easier to rent a car. Age requirement for someone to rent a car from these companies usually 25 years. Younger customers can also rent a car but may be required to pay additional fees or have someone co-sign for the car, too.
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