Can you imagine replicating the human brain? Think its impossible?..Well...think again. With artificial neural networks its POSSIBLE!! See, the human brain is truly special. Haven't you wondered how come you can see your friend's photo and remember "oh yeah..he's my buddy"? Well we do know that humans have a capacity to learn and remember. These two highly developed qualities are what set us apart from the rest of the creatures gracing mother Earth. We are already familiar with various programming languages like C,C++,Java and a whole lot of other languages that help us solve problems. I can perform complex calculations, logical analogies and a truckload of other little miracles using these superb techniques. But is it possible to create a replica of the brain? Something that can actually not only analyse, but learn and remember at the same time? Something that we can train to do what we want? The answer was 'no' until artificial neural networks, more popularly known as ANNs came into being!
You will be as astounded as I was to learn that ANN research began in 1943, years before traditional computing actually began!! It was left in the dark may be because majority of researchers felt that it was a useless plan. "How could the human brain be mimicked?"they thought(may be...I am just making guesses here). In an age where even going to space was being accepted, the replication of the human brain seemed a legend that would never take fruit. All the brilliant minds shifted back to computing..a field that has developed and progressed..leaving behind the beautiful ANN concept decades behind and just still emerging from its cocoon. Well don't be too depressed because ANNs came back with a bang and how!! Mimicking the human brain is no longer a far fetched dream, but a reality that you can grasp if you are willing enough to reach out to it. And how exactly is this done? Simple really. Replicate the human neurons with sophisticated technology. Lets not delve into the hyper complicated technological know-hows of how all this happens. Lets talk in simple layman terms.
Now, anyone with an high school degree ought to know that the human brain consists of special cells called neurons with really long tails(axon). These axons touch the other neurons and information is transmitted as nerve impulses which are just plainly chemical reactions. Similarly in the ANN model we have primary neurons that are linked up with other neurons and these in turn with others and this process goes on. Now each connection is called a weight and by manipulating this we can determine what the network is supposed to do. Okay, let us see a simple example and mind you I cooked up this example by myself from what I understood by extensive reading. Please do not take this as the written word. So lets discuss addition of two numbers in layman language. The two numbers are given as the inputs to our first layer of neurons. Next we have to train the neural network what it has to do. This is done by teaching it what to do with examples. Say we gave example number 1 and 2. The result should be 3. But suppose our ANN generated 2.89. Then we vary the weights until the output becomes 3. Next we give another example pair 2 and 3. The output should be 5, but say we get 4.93, then we again vary the weights till we get 5. Now this is done until the ANN is able to do its own calculation. Now give it any number and VOILA!! Our ANN knows what to do and does it correctly because of its memory! Isn't that just splendid. Clap people! We just created a mini brain!
Now many will be thinking why should we train our ANN to do math. We have calculators for that! Well, you are right! But then can our calculators do detect and recognise faces or predict the stocks for that matter? No right? Hehe..that is where our ANN comes into play. With memory and an ability to learn, its on a whole different platform from anything the world has witnessed till date! Remember an old laptop add, where the laptop recognises Saif Ali Khan though he is atrociously malformed(for lack of a better word)? Well, you too can rig up your pc to do the same and that also without having to purchase hyper costly laptops. Just imagine how cool it would be if your younger sibling tries to take a sneak peek at your pc but they get automatically rejected? Ah, bliss I tell you..sheer bliss!!
Now if you have become hyper excited and want to try your hand at this, the simplest way will be to learn matlab which is a simple software. It is not a freeware and that is the only bad point that I have found about it. You can actually generate a ANN program using matlab. And 'NO' you don't have to go to expensive tutors, you can just learn from the help section which is just too AWESOME!! Well, I am doing that right now and hopefully I can get an awesumly fabulous face recognition thingamagig made in the near future preferably in two months(I must be dreaming). Anyways for anyone looking for more information Wikipaedia and the neural network book by Simon Haykin will be a huge help! I have imparted whatever knowledge I had. And trust me its not much! Neural networks is a huge sea filled with details, facts and other mysteries! While you get busy demystifying neural networks let me depart with a "Thats all folks!".
Lg has finally launched its first phone with android operating system.But just like every other first to come implications this has also failed due to the bottlenecks in the phone manufacturing.The phone is not up to the mark as its too heavy to carry due to the slider keypad which is quite stiff to use.
The phone has a good camera of 5 Mega Pixels with auto flash , autofocus.Although it is loaded with android operating system but it seems like it has been overburdened as it gets hang a lot of time.As soon as you download an application or try to play game the phone gets hang.
This phone also has gprs navigation system with google maps which at first look seems to be flabagasting but as and when you need it it is gonna hang and then you need to pull out the battery from the phone and then again insert it to and turn on the phone which takes along while as if a computer is booting.
It also has the problems while calling.Without any network problem, if you dial a call most of the times it just displays that the call ended or says that call cannot be compeleted this time.And even sometimes it produces some noises which are just horrible when you are talking.
The other problem with these sort of phones is that they cannot be put in a cover because of there slider keypad and there thickness which reduces the sensitivity of there touch screen as the time passes.The most sort after problem of no wireless fm persists here too and the condition is more worsened as the fm does not even does not run on the speakerphone even after the headphones are connected, it can only be listened in the headphones which indeed are quite impressive.
The other shortcoming of the phone is that you cannot connect it to the pc and synchronize your phonebook or you cannot transfer the data directly to the phone from pc.For this you need to purchase a memory card reader then transfer data.Even then you cannot have access to your memory card directly in your phone.You cannot go to your memory card and view images.You need to copy data from computer in the specified folder of images, videos, songs etc which it automatically takes to its gallery and then you can view them.
All in all this is not a great phone to buy at the price of around Rs16000.At this price, it is better to go for sony erricsson xperia mini or vivaz.
Whether it is office or home,everywhere we use computer.There we see many wires and since people don't like these,people have moved to use wireless technologies. Wi-Fi(Wireless Fidility) and Bluetooth are both wireless technologies and these both technologies can be used in our computer or in offices where we work. These both technologies are advanced technologies and also it is wireless.Lets see what are diferences in using wi-fi and Bluetooth.
Range:-
Wi-Fi is famous to build a LAN(Local Area Network) at home and in offices. At home,with the help of wi-fi,we don't find any trouble in building up network. If we want to share internet connection between two computers in office and we don't want to use cables to build the network, we should use wireless LAN. Due to this,there is reduction of cost in LAN installation.The range of Wi-fi is nearly 300 foot from wireless Networking Node. While,range of Bluetooth is 30 foot.
Standard:-
Working Standards of Wi-Fi and Bluetooth is different. Wi-Fi is based on 802.11n standard,while,Bluetooth device has bluetooth 2.0 standard.
Connection and Installation :-
Bluetooth device do not need any installation and Configuration.Working of bluetooth is very simple and does not need to configured. You just need to enable the bluetooth on other device,when you are transferring data to other device. If you need to use bluetooth in your PC,then you need bluetooth adapter. In Market,you get Bluetooth doogle set up with CD.By this CD,you can set-up and installed easily .You can enable bluetooth now on your computer. While,in Wi-Fi ,you need many configuration.To enable Wi-fi Network,you need router and modem to install on your computer.
We use Wi-fi to set-up the wireless LAN. Large number of computers and laptops can be connected with each other with the help of Wi-Fi.But,in terms of Bluetooth,its not like LAN. Bluetooth works with PAN(Persoanl Area Network).
Data Rate :-
The difference between Bluetooth and Wi-Fi is Data Rate. The transfer of data or information done in how much speed is data rate. Bluetooth transfer rate is more than Wi-fi. With the help of Bluetooth, you can transfer the information at 800 Kbps. While, Wi-Fi due to sensitiveness,there is risk of deleting the data and its speed is also verey less. With the help of Wifi, if we would have connected internet,we find during downloading,the speed which we get in broadband connection is more than we get while connecting with Wi-Fi.
Applications of Wi-Fi and Bluetooth :-
There is huge difference in the applications of Wi-Fi and Bluetooth as well. Bluetooth is used to transfer , data or file from one device to other device. If we are having facility of Bluetooth in our computer,we can access bluetooth enabled printer. While,by connecting Wi-Fi, not only we can transfer data but also can access software or other information from other computer. We can access Wireless internet using Wi-Fi in many computers This cannot be done with the help of Bluetooth. But,if we want to connect internet in bluetooth enabled computer,by using Bluetooth enabled cellphone,with the help of GPRS,we can access internet.
In Comparison to Bluetooth,we can take help of Wi-fi for longer time. Now-a-days, most of Computers manufacturers,install bluetooth LAN card in computers. In Comparison to Wi-fi,bluetooth is new technology, but, cell phones and laptop manufacturer have now a days,installed Wifi in most of their products.
MSN is a program that is extremely popular among the youth. With MSN you from your chair to communicate with people. Except for youth is always attractive to MSN adults and older people. MSN's free and very easy to make calls. If you have MSN Once through is often very fun to do. This article explains how to use MSN.
What is MSN?
MSN is a program that allows you to converse with other people. This may be done by typing messages to each other (which is most common) and through an audio system to talk. MSN is very popular especially among youth, for example, make appointments or just chat with each other. MSN is about the world, so you can say, a vacation from friends abroad in touch with MSN.
What do you need for MSN?
For MSN, you have access to a laptop or computer with internet connection. MSN is an Internet program that works. Then it is intended that an E-mail or MSN address creating. This could be at www.hotmail.com or www.gmail.com. Creating an MSN or E-mail address is free. Remember your MSN address and your password, well this because you will soon need.
Next you need to download MSN Internet, this is free. There are many websites where you can download MSN. There are many versions of MSN. The version in the article is about the version: Windows Live Messenger 2011. You can download by simply typing in www.google.nl: Download Windows Live Messenger 2011. Click on one of the websites that appear and click on the download button. Follow the instructions on the screen which says it all.
Start with MSN:
Now you have MSN on your computer, an Internet connection and an MSN address, you can begin to subscribe to MSN. Click on the icon for MSN display a window where your MSN address and password is required, do this and then click subscribe. Now that you logged on MSN is the window on which your supposed to be empty, to be here to talk to contacts to get you contacts.
Add contacts:
To call contacts to enter you must have access to the MSN address of contacts. Ask people that you know that MSN have their MSN address, write it down or remember it well. To add contacts by clicking on the word Contacts that top the window and clicking on contact. You add the MSN address of the person you wish to add and follow the instructions. So do this with anyone you want on MSN.
Now that you've invited people for MSN you accept these people. If this has happened and you are at the same time one of your contacts online and you can start a conversation with this person.
Conversations:
Now that you have contacts you can make calls to perform. Note: People have to be online zjin calls. You can tell if people are online on their status. For each contact is a square, gray square where people are offline and you can not talk to, when the people are green they are online and available. Red or orange means that people are online but busy elsewhere working example, it takes awhile before the person responds again. To a voice conversation, click on the person with a green square for his or her name. Then a window appears where you can type, type your message and click enter or send the person will get your message and can send you something back.
A PC is cheaper and performs better. So why would you ever want a laptop? For itinerant laborers is that they can remain productive on the laptop. Others want a train in the movie. Or e-mail from the coffee shop. Try that with your PC.
Is a laptop better or a PC? It seems a question that anyone can be answered. Indeed, it is just what you do with your computer. The majority of people use computers to email, internet and store photos. Then you do not use the maximum computing power of your computer. Therefore you can not hesitate a laptop. PCs are better equipped to more complicated things requiring more computing power is needed like gaming, high-resolution photo editing or video editing. Laptops are getting better and the performance difference is smaller, but PCs are still faster and better able to handle larger files.
Purchase and consumption
A PC is less expensive to buy. They are in large series of relatively cheap parts. That keeps the price low. A laptop components of higher quality. The fact that a laptop is moved requires other requirements of the device. A laptop uses much less power than a PC. A laptop is more energy-efficient components to prevent the battery goes dead soon. Even a laptop has a smaller screen. A PC will be around 100 watts per hour anymore. At current electricity price is 140 euros per year, if you give him 24 hours a day turned on. Many people allow the computer to allow a half day which means that after 4 years still 280 Euro in energy saving. The extra cost of a laptop, you deserve to speak back, if you use him a lot.
Portable
The advantage of the laptop is that it can take anywhere. This can be useful if you make a long train journey on the train and you want on your computer. If it is not you ever take the laptop, it has not really feel like a laptop. The PC is a major impediment him well but if you can post you see only one keyboard, mouse and monitor on your desk. Much difference is there not a laptop. That you quickly pick up the laptop also has a downside. He is rather broken. Each time you must ship is a small chance that he is subjected to impacts. This can result in defects. It is therefore wise to important files on an external hard disc.
Adjust
A PC has the great advantage, besides the cheaper price and better performance, you can fully customize it to your needs. The latest video card, memory upgrades and interfaces are easy to install. For a laptop the optimization of the personal computer less relevant. There are a number of extensions possible, but these are more expensive than a PC. Some laptop fans opt for a cosmetic adjustment by a large sticker on the lid to stick. This laptop is called pimping, people like a factory product a personal touch.
Jealousy
A laptop has a smaller keyboard. That might not find good work. It is anyway to get used to the keyboard when you switch from PC to laptop. The screen is slightly smaller. Why do people do for a laptop? Perhaps you've ever felt a little jealousy when a passenger train or other coffee shop visitor saw a laptop from his bag here. If you like that gnawing sense of envy or you want to come work on yourself, or even buy a laptop.
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