Fiber cabling is growing very fast due to how much more efficient it is than copper cabling. Fiber, for one, has a greater bandwidth. Single mode cables offer the most bandwidth but you have the option of the single mode, 62.5 or 50 micron multimode cables. In addition to that, fiber can carry more information than the copper. Fiber can also carry over a longer distance with low attenuation.
The experiment produces the primary effect, where many words are recalled from the beginning of the list, and the recency effect, where many words are also recalled from the end of the list, but not so many from the middle. This study also shows that there are separate short term and long term memory stores since the primary effect occurs because the words at the beginning of the list have been rehearsed, and so are transferred into the long term memory store. However, whilst this is going on, less attention is paid to the middle words and they tend to be lost unless they have some special significance to the individual. The words at the end of the list are well recalled because they are still fresh in the memory system unless there is a distractor task which causes this information to be lost through interference, displacement, or decay. This evidence can be seen as reliable since it was scientific, conducted in a laboratory, and produced quantative data that makes it easy to summarise and compare with other data.
The superior recall of items at the start of the list is called the primary effect, whilst the superior recall of the items at the end of the list is called the recency effect. This is good evidence for the multi-store model of memory because it shows the difference between the STM and the LTM. Rundus & Atkinson (1970) Rundus and Atkinson asked participants to rehearse out loud the list they were given (similar to Murdock's experiment). Tape recordings showed that words from the beginning of the list were more likely to be rehearsed than later ones. Because of the limited capacity of the STM, words from the middle of the list are thought to be lost completely or unavailable for recall.
Willingham states that primary memory is limited to 2 seconds of acoustic code and four visuospatial objects. Semantic-based memory is not as limited because it utilizes a process known as “chunking.” Chunking in a process that increases the capacity of primary memory by having the secondary memory doing the translating, or encoding, using semantics. The reason that Primary memory is temporary is because interference and decay effect what can be stored in that area of the brain at one time. Any damage or factors that would prohibit the Primary Memory storing information effect that future or past memories have on the current information stored in primary memory. Decay is the biggest interference to the ability of Primary Memory and limits its capacity and the required attention to retrieve information.
The research suggests that capacity of short term memory could only be enlarged by grouping items together known as chunking. By chunking information, we are more likely able to remember it whether in single or combined forms which is why it’s known as the magical number seven plus or minus two. However, the experiment could also be criticised in the sense that there could have been experimenter bias and demand characteristics. It also isn’t ecologically valid since people don’t have to memorise random letter and numbers all the time. Nevertheless,
The bulbs create less heat during use, which can lead to lower cooling costs and its green friendly, decreases amount of energy used by 5%. Laser Transmitter Laser transmitter have a much smaller and tighter light input and can be easily coupled to single mode fibers, this makes the laser transmitter perfect for longer distances and high speed links. Laser has a high bandwidth capability some are used up to 10GHz or 10Gbps this makes Laser transmitters more expensive. Laser Transmitters have a narrow spectral output that suffers very little chromatic dispersion. Laser Transmitters avoid interference because the frequencies between the lasers have narrow beams that are less likely to have significant side lobes that could introduce interference.
Outline and Evaluate the Working Memory Model The working memory model (WM) explains why we can do two different tasks at the same time, but not two similar tasks. It replaced the idea of a unitary short term memory (STM) In the working memory model information is passed from STM to the central executive and this decides if the information is visual or auditaory. Information is then passed to the corrersponding store. The central executive is a key componant of the WM. It directs information from STM to one of the "slave systems" It also has a very limited capacity and duration so can't attend to too many things at once.
Which of the following statements is not true of file processing systems? a.|the records in one file relate to the records in other files| b.|they have redundant data| c.|they isolate data| d.|maintenance tasks consume additional time| ____ 15. Which statement does not apply to the database approach? a.|it requires less memory than file processing systems| b.|it increases the data’s integrity| c.|programs are easier and faster to develop than with a file processing system| d.|it allows nontechnical users to access and maintain data| ____ 16. Which of the following DBMSs will run only on a server or mainframe?
However, Boyer Moore algorithm fails to achieve the desired performance for shorter patterns. On the other hand although the KMP algorithm works well for shorter patterns, it is far more complex than the proposed algorithm. The proposed algorithm is easy to understand and implement. III. PROPOSED
The question that should be asked is what method should be chosen so that it will be the most cost and time effective? Small Groups VS Individual Expert as Problem Solving Small groups tend to surpass individual experts when alternative solutions are present. Due to the fact that small groups consist of multiple bodies, they can input there own specific experiences and unique knowledge into the task at hand thus coming up with an, if not better, answer than that of the individual. Group work causes less strain to the mind and well as it is a lot less time consuming. Typically higher quality work is present with multitudes of solutions.