| RSS FEED | ANT COLONY OPTIMIZATION 17.11.2009 10:25:0 +0000


ANT COLONY OPTIMIZATION
Ant Colony Optimization (ACO) technique is newly invented optimization technique to solve graphical optimization problem. It has been developed for combinatorial optimization problems. ACO are multi-agent system in which the behaviour of each single agent, called artificial ant or ant for short in the following, is inspired by the behaviour of real ants . ACO has been successfully employed to combinatorial optimization problems such as maximum loadability in voltage control study, loss minimization in distribution networks, unit commitment problem, multi0bjective reactive power compensation, and complex multi-stage decision problem. 
ACO CONCEPT: There is a path, along which ants are walking (for example from food source A to the nest E, and vice versa, as shown in Fig 1.
Suddenly an obstacle appears and the path is cut off. So at position B the ants walking from A to E (or at position D those walking in the opposite direction) have to decide whether to turn right or left. The path of ants followed is shown in Fig 2.
Because path BCD is shorter than BHD, the first ant following it will reach D before the first ant following path BHD which is shown in Fig.3. The result is that an ant returning from E to D will find a stronger trail on path DCB, caused by the half of all the ants that by chance decided to approach the obstacle via DCBA and by the already arrived ones coming via BCD: they will therefore prefer (in probability) path DCB to path DHB. As a consequence, the number of ants following path BCD per unit of time will be higher than the number of ants following EHD. This causes the quantity of pheromone on the shorter path to grow faster than on the longer one, and therefore the probability with which any single ant chooses the path to follow is quickly biased toward the shorter one. The final result is that very quickly all ants will choose the shorter path. The algorithm that is going to be defined in the next sections is models derived from the study of real ant colonies. Therefore the system is called as Ant System (AS) and the algorithms as Ant algorithms. The use of artificial ant colonies as an optimization tool, will have some major differences with a real (natural ant) one: 1. artificial ants will have some memory, 2. they will not be completely blind, 3. they will live in an environment where time is discrete. Ant colony optimization is a major breakthrough in Engineering as well as non engineering applications
| Clean Energy from BIOmass 8.10.2009 9:21:0 +0000


Clean Energy from Biomass
Biomass is a renewable energy resource derived from the carbonaceous waste of various human and natural activities. It is derived from numerous sources, including the by-products from the timber industry, agricultural crops, raw material from the forest, major parts of household waste and livestock manure.   Biomass does not add carbon dioxide to the atmosphere as it absorbs the same amount of carbon in growing as it releases when consumed as a fuel. Its advantage is that it can be used to generate electricity with the same equipment or power plants that are now burning fossil fuels.  Biomass is an important source of energy and the most important fuel worldwide after coal, oil and natural gas. Traditional use of biomass is more than its use in modern application. In the developed world biomass is again becoming important for applications such as combined heat and power generation. In addition, biomass energy is gaining significance as a source of clean heat for domestic heating and community heating applications. Biogas is a product of fermentation ( anaerobic process ) of organic material. Organic means substances from plants or animal origin and with a high content of carbon. The main goal of the fermentation is to produce biogas as a energy source of renewable energy. The main components are methane (CH4, round about 60 %) and carbon dioxide ( 30-40 %). | Digital ant for cyber security 5.10.2009 5:11:0 +0000


Digital ant for cyber security
Ants are normally very fast and quick in action for searching food. Based on its activities, ant colony algorithm has been developed by the technology world and put it in many real time applications.  Even when its colony is under threat, it behave in such a way, it protect its colony from any intruders. Ants use swarming intelligence to detect intruders. While it detects a threat, it joins with many other ants to overcome their opponents. This technique is effectively incorporated by cyber scientist into their security system at Wake Forest University, North Carolina, US. They call the ants as digital ants which will wander through computer networks looking for any intruders or worms or virus. Each time a digital ant detects any intruder, it is programmed to leave a strong digital scent ( a real ant leave a scent called as pheromones). The stronger scent trails attract more ants, producing the swarm that marks a potential computer infection. The researcher at the University has said that 3000 different types of digital ants could be deployed for evidence of a threat. As the digital ant moves over the network, they leave digital scent as trails to guide other ants. This is very interesting which saves our computers and networks from viruses |
| RSS FEED | Frequently receiving mails from entrecard 18.11.2009 20:58:19 PST


Frequently receiving mails from entrecard
Entrecard is totally changing its activities from social aspects to financial oriented. Entrecard is mostly focusing on marketing and earning more money from entrecarder. The recent mails say that they wish to reduce the pruchasing price of entre credits by 50% and some for about 25$ they are ready to adverise our ads to their complete network and so on. This is not really encouraging us to stay at entrecard. The trend should change and should favour the entrecarders. Their motto should change from money to social. THis is my opinion about recent status of entrecard.
| Tips on Valid and Invalid Clicks and impressions 17.11.2009 3:2:28 PST


Tips on Valid and Invalid Clicks and impressions
This is very very important aspects to be considered while using adsense or chitika ads or most of the advertiser's ads. They wish to pay for valid clicks or impressions What is a valid click? 1.Clicks which are initiated by a real user to your Web site. 2. The actual click is performed by a real, live person. 3. The click is the result of genuine interest in the content of the advertisement by the real, live person and targeted person. Then what are Invalid clicks? Clicking by yourself several times from * your own system * within the network of your company or concern * within the area of your living ( which are easily identified by the adsense prevent tool Normally your IP address will be traced by which the source of click will be identified. Do not mention the encouraging others(friends, family members) to click the ads on your pages Suppose if you wish to view google ads on your page, you can use the adsense preview tool which are availabe here Center at adsense support | The important terminologies in adsense 16.11.2009 1:41:56 PST


The important terminologies in adsense
Most of the people on internet are familiar with adsense. But how many of us know about CTR, CPC, Unique visitors and so on. I would like to share some of these terminologies Unique visitor:A person who visit your site at the first time during a given period (say 24 hours, 60 minutes or per week). The measurement for unique visitor is mainly used to determine the capability of the site for any particular advertisement CTR: It stands for Click Through Rate. The number of people who clicks an ad (where the ad page opens upon clicking) on your website. The ad page will have more information about the advertisement. CPC: CPC is the amount that an advertiser pay each time when an ad is clicked. This may vary from advertisement to other ads. More unique visitor, then more Click Through rate and you will get more CPC. |
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