Sunday, January 27, 2008

Robotic ..... I Love this field



"How old are you?" she wanted to know.
"Thirty-two," I said.
"Then you don't remember a world without robots. To you, a robot is a robot. Gears and metal; electricity and positrons. Mind and iron! Human-made! If necessary, human-destroyed! But you haven't worked with them, so you don't know them. They're a cleaner better breed than we are."
-from I, Robot by Isaac Asimov










Robot, which is derived from a Czech word meaning "menial labor," got its modern meaning from a 1920 play, R.U.R. (Rossum's Universal Robots), by Czech playwright Karel Capek (1890-1938). The robots in Capek's play develop emotions and overthrow their human masters. A sinister "power struggle" with robots has long been a popular theme in science fiction --- for a change of pace, try Isaac Asimov's "I Robot" stories in which he consciously strove to depict robots as a benefit to society.
Today, robots are used in many ways, from lawn mowing to auto manufacturing. Scientists see practical uses for robots in performing socially undesirable, hazardous or even "impossible" tasks --- trash collection, toxic waste clean-up, desert and space exploration, and more. AI researchers are also interested in robots as a way to understand human (and not just human) intelligence in its primary function -- interacting with the real world.


Good Places to Start
Robotics. An In Depth report from CBC.ca News (July 2007). Features include:
What is a robot? No simple definition, experts say (July 16, 2007).
Timeline: Evolving Robots - from fantasy to fact.
Photo Gallery: Robots - from fiction to fact.
Warning! Robots ahead- Are we ready to trust autonomous machines in our daily lives? By Paul Jay (July 16, 2007).
Dream machines - Surveying pop culture’s robotic fixation. By Martin Morrow (July 16, 2007).
Starter bots - Are kids' home-built robots laying the foundation for inspired inventions? By Denise Deveau (July 19, 2007).
A Robot in Every Home - The leader of the PC revolution predicts that the next hot field will be robotics. By Bill Gates. Scientific American (January 2007). "[T]he emergence of the robotics industry, which is developing in much the same way that the computer business did 30 years ago. ... Meanwhile some of the world's best minds are trying to solve the toughest problems of robotics, such as visual recognition, navigation and machine learning. And they are succeeding. ... I can envision a future in which robotic devices will become a nearly ubiquitous part of our day-to-day lives. I believe that technologies such as distributed computing, voice and visual recognition, and wireless broadband connectivity will open the door to a new generation of autonomous devices that enable computers to perform tasks in the physical world on our behalf. We may be on the verge of a new era, when the PC will get up off the desktop and allow us to see, hear, touch and manipulate objects in places where we are not physically present. ... Because the new machines will be so specialized and ubiquitous--and look so little like the two-legged automatons of science fiction--we probably will not even call them robots."
Robot Pals. Scientific American Frontiers (April 13, 2005). Alan Alda [host]: "The problem with most robots is that they tend to be, well, robotic. They know nothing they aren't programmed to know, and can do nothing they aren't programmed to do. But for many applications where robots could be useful, they need to be more like humans, able to respond as a cooperative partner rather than a mindless machine. In this program, we'll meet some robots that are learning to figure out for themselves what their human companions have in mind."

Speculation vs investment

It is very important that the individual wanting to trade foreign exchange be aware of the very marked difference between speculation and investment. Forex trading is by nature a speculative occupation. Foreign exchange markets are amongst the most volatile markets in the world. When traded on a margined basis they effectively become the most volatile in the world. Day trading in foreign exchange can be extremely profitable and high-risk profile traders can generate huge percentage returns even overnight. Day trading is however a mentally and psychologically challenging activity and is by no means meant for everyone. Day trading is essentially speculation and day traders essentially only do that: day trading. Most people who trade foreign exchange are not professional day traders however.Often the contractors of foreign exchange brokerage services are professionals in some capacity or other. These people do not day trade but take the occasional position from time to time. This is also speculation and should not be confused with making an investment.The conclusion here is that the nature of foreign exchange trading not lend itself as much to investment as it does to speculation and hedging (hedging may be performed in forward instruments). It is possible in a sense to make an investment in foreign exchange over a long-term period but this necessitates a large account value and low leveraging.

Main forex markets

Foreign exchange is traded essentially in two distinctive ways. Over an organized exchange and 'over the counter'. Exchange traded foreign exchange represents a very small portion of the total foreign exchange market the great majority of foreign exchange deals being traded between banks and other market participants 'over the counter'.1. Exchange traded currenciesIn the case of an organized exchange like the Chicago Mercantile exchange (CME) in the US, standardized currency contract sizes that represent a certain monetary value are traded in the International money market (IMM). A central clearing house organizes matching of transactions between counter-parties. There are various disadvantages to trading currency futures as outlined in the chapter Advantages of trading FX.2. Forex marketIn comparison the over the counter market is traded around the world by a multitude of participants and price quality, reputation and trading conditions determine who a participant wishes to trade with. It is probably the most competitive market in the world and brokers like ACM must insure they live up to the highest standards of service and be compliant with market standards and practices if they want to acquire new customers and retain their existing ones. In 1998 a survey under the auspices of the Bank for International Settlements (BIS), global turnover of reporting dealers was estimated at about USD 1.49 trillion per day. In comparison, currency futures turnover was estimated at USD 12 billion.Among the various financial centers around the world, the largest amount of foreign exchange trading takes place in the United Kingdom, even though that nation's currency, the British pound is less widely traded in the market than several others. As shown in the graph underneath, the United Kingdom accounts for about 32 percent of the global total; the United States ranks a distant second with about 18 percent, and Japan is third with 8 percent.

Advantages of trading forex

Although the forex market is by far the largest and most liquid in the world, day traders have up to now focused on seeking profits in mainly stock and futures markets. This is mainly due to the restrictive nature of bank-offered forex trading services.Advanced Currency Markets (ACM) offers both online and traditional phone forex trading services to the small investor with minimum account opening values starting at 5000 USD.There are many advantages to trading spot foreign exchange as opposed to trading stocks and futures. Below are listed those main advantages.1. Bid/Ask Spread ratesSpread rates have tightened dramatically in the last years. Most online forex brokers offer a spread of 5 pips on EURUSD which is the most widely traded and liquid currency pair. ACM offers a 3 pip spread on EURUSD. In stock trading, only liquid stocks offer tight spreads. Those spreads often represent on average between 0.04% and 0.06% of the value of the stock. In comparison ACM offers a 3 pip spread on all major currencies, this equates to approximately between 0.02% and 0.03% on the underlying dollar value.Exact percentages at current rates (May 2002)EURUSD 3 pips 0.03%GBPUSD 3 pips 0.03%USDJPY 3 pips 0.023%USDCHF 3 pips 0.018%In the futures market spreads can vary anywhere between 5 and 9 pips and can become even larger under illiquid market conditions (which tends to happen substantially more often in futures currencies).2. CommissionsACM offers foreign exchange trading commission free. This is in sharp contrast to (once again) what stock and futures brokers offer. A stock trade can cost anywhere between USD 5 and 30 per trade with online brokers and typically up to USD 150 with full service brokers. Futures brokers can charge commissions anywhere between USD 10 and 30 on a round turn basis.3. Margins requirementsACM offers a foreign exchange trading with a 1% margin. In layman's terms that means a trader can control a position of a value of USD 1'000'000 with a mere USD 10'000 in his account. By comparison, futures margins are not only constantly changing but are also often quite sizeable. Stocks are generally traded on a non-margined basis and when they are, it can be as restrictive as 50% or so.4. 24 hour marketForeign exchange market trading occurs over a 24 hour period picking up in Asia around 24:00 CET Sunday evening and coming to an end in the United States on Friday around 23:00 CET. Although ECNs (electronic communications networks) exist for stock markets and futures markets (like Globex) that supply after hours trading, liquidity is often low and prices offered can often be uncompetitive.5. No Limit up / limit downFutures markets contain certain constraints that limit the number and type of transactions a trader can make under certain price conditions. When the price of a certain currency rises or falls beyond a certain pre-determined daily level traders are restricted from initiating new positions and are limited only to liquidating existing positions if they so desire. This mechanism is meant to control daily price volatility but in effect since the futures currency market follows the spot market anyway, the following day the futures market may undergo what is called a 'gap' or in other words the futures price will re-adjust to the spot price the next day. In the OTC market no such trading constraints exist permitting the trader to truly implement his trading strategy to the fullest extent. Since a trader can protect his position from large unexpected price movements with stop-loss orders the high volatility in the spot market can be fully controlled.6. Sell before you buyEquity brokers offer very restrictive short-selling margin requirements to customers. This means that a customer does not possess the liquidity to be able to sell stock before he buys it. Margin wise, a trader has exactly the same capacity when initiating a selling or buying position in the spot market. In spot trading when you're selling one currency, you're necessarily buying another.

How To Choose a Forex Trading System That Works and Suits You

There are so many different trading systems you could use to trade the forex market, some better suited to certain people than others. For example some people may find it easier to comprehend and take into account fundamental factors as opposed to looking at a screen covered in technical indicators, and vice-versa.The first logical step in determining what type of trading system would best suit you is actually being aware and understand the widely known methods of analysis used in trading the currency market. Once you are aware of the tools that are available, you can generally tell what type of analysis suits you. For example some of the main technical analysis methods which are popular include:Pivot pointsChart patternsFibonacci retracementsCandlestick patternsAnd some fundamental factors which are widely used include analyzing:Interest ratesTrade balancesUnemployment ratesGross domestic product (GDP)You may now actually be able to develop your own system by combining certain methods of analysis together, giving you a method which you are comfortable with. On the other hand you may decide that you would like to trade someone else’s system, either way, that brings us to the next step which is determining the profitability of a trading system.Determining ProfitabilityMost people would think that back testing is the best way to determine a systems profitability. However back testing doesn’t always give you a true idea of how profitable a system is. The reason for this is because when you’re back testing your system on historical charts, you are only seeing the obvious setups which have occurred, and not always seeing the ones that are less obvious. These less obvious ones sometimes can produce losses, which is why back testing isn’t always the best method to implement.A better method of determining profitability is by trading your system in real-time with a demo account. This would give you a true understanding of what your system is capable of. This would also allow you to familiarize yourself with your trading platform at the same time. When determining profitability you must look at it in terms of expectancy and opportunity.Expectancy & OpportunityThese two factors together will be able to tell you what you could expect to make over a period of time. Expectancy is calculated with the following formula:(Probability of winning × average win) – (Probability of losing × average loss)This will give you a figure which is the average amount you can expect to make per trade. This shouldn’t be a negative amount, if it is you should look at some other method of trading since you cannot make money on a system that produces a negative expectancy. Obviously the higher this figure is the better. Now to the opportunity factor.The opportunity factor is how often you are able to trade using your system. By multiplying your expectancy figure with your opportunity factor it will tell you how much you could expect to make over a period of time. The more opportunity you have to trade, the more money you should expect to make. This now brings us to the last component of a trading system, money management.Money ManagementWithout proper money management you will end up as a statistic. In other words one of those 90%+ of traders who loose their money. Money management tells you how much of your account balance to risk per trade. The whole point of money management is to ensure your survival over the long term, and to preserve your capital.The most common form of money management is the percent risk model which tells you not to risk more than x percent of your account balance on any one trade. A range between 1-3% is generally an accepted amount which has been a reliable percentage to use in order to make money in the long term.ConclusionBy taking into consideration the above factors you will be able to determine if a trading system best suits you, and with some simple mathematical calculations you will be able to determine its profitability

Forex Resources

The live forex charts can be used to track ten currency pairs in real time and click on forex rates for a pop-up window of ten currency pairs with live rates for the EUR/USD, USD/JPY, GBP/USD, USD/CHF, USD/CAD, AUD/USD, NZD/USD, EUR/JPY, EUR/GBP and EUR/CHF, including the daily highs and lows from 17:00 EST. For a selection of free ebooks, trial offers, calculators and tutorials, visit free downloads. For a current snapshot of the foreign exchange market, use the market monitor to display time zones for several key markets, as well as live forex rates, a sentiment indicator and an economic calendar in a detachable window. Use the online money management calculator to calculate the correct position size for your trade based on your risk profile. Browse the selection of forex books on offer in forex books which includes special sections on technical analysis and general trading. There is a great number of forex related resources to be found in the categorised forex directory to help you find a particular niche or service.

About Forex

To buy foreign goods or services, or to invest in other countries, companies and individuals may need to first buy the currency of the country with which they are doing business. Generally, exporters prefer to be paid in their country's currency or in U.S. dollars, which are accepted all over the world.The foreign exchange market, or the "FX" market, is where the buying and selling of different currencies takes place. The price of one currency in terms of another is called an exchange rate.The market itself is actually a worldwide network of traders, connected by telephone lines and computer screens there is no central headquarters. There are three main centers of trading, which handle the majority of all FX transactions United Kingdom, United States, and Japan .

what is forex

FOREX (FOReign EXchange market) is an international foreign exchange market, where money is sold and bought freely. In its present condition FOREX was launched in the 1970s, when free exchange rates were introduced, and only the participants of the market determine the price of one currency against the other proceeding from supply and demand.As far as the freedom from any external control and free competition are concerned, FOREX is a perfect market. It is also the biggest liquid financial market. According to various assessments, money masses in the market constitute from 1 to 1.5 trillion US dollars a day. (It is impossible to determine an absolutely exact number because trading is not centralized on an exchange.) Transactions are conducted all over the world via telecommunications 24 hours a day from 00:00 GMT on Monday to 10:00 pm GMT on Friday. Practically in every time zone (that is, in Frankfurt-on-Main, London, New York, Tokyo, Hong Kong, etc.) there are dealers who will quote currencies.FOREX is a more objective market, because if some of its participants would like to change prices, for some manipulative purpose, they would have to operate with tens of billions dollars. That is why any influence by a single participants in the market is practically out of the question. The superior liquidity allows the traders to open and/or close positions within a few seconds. The time of keeping a position is arbitrary and has no limits: from several seconds to many years. It depends only on your trading strategies. Although the daily fluctuations of currencies are rather insignificant, you may use the credit lines, that are accessible even to currency speculators with small capitals ($ 1,000 - 5,000), where the profit may be impressive. (You can learn more about it in the section: The main principles of trading.)The idea of marginal trading stems from the fact that in FOREX speculative interests can be satisfied without a real money supply. This decreases overhead expenses for transferring money and gives an opportunity to open positions with a small account in US dollars, buying and selling a lot of other currencies. That is, on can conduct transactions very quickly, getting a big profit, when the exchange rates go up or down. Many speculative transactions in the international financial markets are made on the principles of marginal trading.Margin trading is trading with a borrowed capital. Marginal trading in an exchange market uses lots. 1 lot equals approximately $100,000, but to open it it is necessary to have only from 0.5% to 4% of the sum.For example, you have analyzed the situation in the market and come to the conclusion that the pound will go up against the dollar. You open 1 lot for buying the pound (GBP) with the margin 1% (1:1000 leverage) at the price of 1.49889 and wait for the exchange rate to go up. Some time later your expectations become true. You close the position at 1.5050 and earn 61 pips (about $ 405). For the calculation of 1 pip click here.Everyday fluctuations of currencies constitute about 100 to 150 pips, giving FX traders an opportunity to make money on these changes.In FOREX, it's not obligatory to buy some currency first in order to sell it later. It's possible to open positions for buying and selling any currency without actually having it. Usually Internet-brokers establish the minimum deposit such as $ 2000, for working in the FOREX market, and grant a leverage of 1:100. That is, opening the position at $100,000, a trader invests $1,000 and receives $99.000 as a credit. The major currencies traded in FOREX, are Euro (EUR), Japanese yen (JPY), British Pound (GBP), and Swiss Franc (CHF). All of them are traded against the US dollar (USD).In order to assess the situation in the market a trader has to be able to use fundamental and/or technical analysis, as well as to make decisions in the constantly changing current of information about political and economic character. Most small and medium players in financial markets use technical analysis. Technical analysis presupposes that all the information about the market and its further fluctuations is contained in the price chain. Any factor, that has some influence on the price, be it economic, political or psychological, has already been considered by the market and included in the price. The initial data for a technical analysis are prices: the highest and the lowest prices, the price of opening and closing within a certain period of time, and the volume of transactions.A technical analysis is founded on three suppositions:Movement of the market considers everything;Movement of prices is purposeful;History repeats itself. That is, technical analysis is a statistical and mathematical analysis of previous quotes and a prognosis of coming prices.A number of technical indicators have been installed into the PRO-CHARTS trading system. Analyzing the indicators one can come to the conclusion about further movements of the quoted currencies. For a more detailed description of the indicators, analyzing price charts and volumes of trading, click here.Fundamental analysis is an analysis of current situations in the country of the currency, such as its economy, political events, and rumors. The country's economy depends on the rate of inflation and unemployment, on the interest rate of its Central Bank, and on tax policy. Political stability also influences the exchange rate. Policy of the Central Bank has a special role, as concentrated interventions or refusal from them greatly influence the exchange rate.At the same time one should not consider fundamental analysis just as an analysis of the economic situation in the country itself. A far bigger role in the FOREX market belongs to the expectations of the market participants and their assessment of these expectations. Various prognoses and bulletins, issued by the participants, have a strong influence on the expectations. Very often an effect of the so-called self-filfilling prophecy occurs when market players raise or lower the exchange rates according to the prognosis. But a deep and thorough fundamental analysis is available only for big banks with a staff of professional analysts and constant access to a wide field of information.In spite of these different approaches, both forms of analyses complement one another. Traders who act on the basis of a fundamental analysis, have to consider some technical characteristics of the market (the main rates of support, such as resistance and resale), and supporters of the technical approach to the market must track the main news (interest rates, important political events).