Things to Consider When Choosing a Web Hosting Company

There are many web hosting services to choose from for your business website. If you are new to business and trying to approach the web hosting company for getting the hosting service? Then, you should take care of the following points before you choose a hosting company for your site. The things that you should take care are:

vps plansType of site
Generally, people will have websites and blogs and whether it is a blog or website you need have online presence and visibility. This will help you go for hosting.

How much you can afford for hosting?
Once you found that you need a separate hosting service, the next question that should come to your mind is how much you can afford for hosting depending on the size of the site and the over all requirements of your site. If you are able to figure out this, you can choose the hosting technology based on the cost and requirements of your website.

Which hosting service level you need?
Once you have fixed the requirements of your site along with the price that you can afford, you can move on for choosing the service level. In general there are three major kinds of hosting services that people get through a hosting company. They are shared hosting, VPS hosting and dedicated hosting. Apart from these three, one more is free.

Check which level of hosting service your site needs that based on the requirements of the site whether it is small, big, etc. and how much you can afford. When it comes to free you don’t have to pay so, you don’t have to think about the price but, you should think about the requirements.

Which hosting technology your website needs?
Along with the level of service, you should also check which technology your site needs – Linux or Windows. Some sites need Linux and some need Windows. You should check the benefits that your site gets and compare them and choose the one most suitable for your site.

Along with the above points, location of the service is important as well. So, before you opt for a hosting service, check whether your site is targeting local business or international business. If it is local, it’s sensible to go for local hosting as it bring multiple advantages: local IP, better loading time, good customer support, etc.

Related Sources: Canadian VPS hosting


How to Select an Industrial Fan

A desired Industrial fan is selected in order to have a better environment in the working area. If we install a smaller fan in a larger area it will not provide the required amount of air or gas to the system for its functioning. Similarly, if we have a larger fan for a smaller working area or smaller functioning, it will result in wastage of energy and causes extra money to the organization.

Selection of an Industrial Fan depends on the following factors

  • Total cooling requirements
    • Cooling requirement mainly depends on
      • Heat which must be transferred
      • Amount of air flow.
    • An efficient system provides the required operating conditions that increase performance and life of all components in the system.
    • In case of ventilation system where cooling is given utmost importance, selecting a correct type of fan is very important. Similarly, in case of cold storage systems cooling requirement is important.
  • Flow rate
    • In industrial terms flow rate is called as CFM (Cubic Feet per Minute). The CFM is the unit of flow rate of air or gas.
    • A required capacity of an industrial fan is to be selected based on the amount of fluid to be transmitted.
    • For a low pressure industrial work, axial fans are selected and similarly for high pressure industrial applications a centrifugal fan is selected.
    • If, in an application the distance of travel of fluid is more, a fan with more motor capacity is selected in order to give high velocity for the fluid.
  • Static pressure
    • The resistance to airflow caused by moving air through a pipe, duct, hose, and hood slots is called static pressure in a fan.
    • Static pressure is expressed in terms of mm or cm. Static pressure is considered as the other physical properties such as volume (flow rate in this case) and temperature vary with the variation in the static pressure.
    • By using the static pressure, we can find the rate of fluid to be delivered by a fan to the amount of cooling required in the system.
    • By using static pressure, performance tables are developed which play an important role in the selection of an industrial fan.
  • Air temperature altitude correction
    • These are the tables developed on the temperature of the working area plotted against altitudes.
    • For example, if we know the static pressure of the system, air flow rate and the level of elevation, a desired working temperature of the system can be found out from this data and the required is selected with air temperature altitude correction tables.

Selection of a fan is very important to maintain required performance and cut down the excess cost to the organization. It is simply easy to select a fan if the capacity and application are known.

Maintenance of Industrial Fans

Industrial Fan contains various rotating and sliding parts which are to be maintained regularly for longer life. Regular maintenance also prevents unexpected accidents happening in the system. Some basic maintenance steps of the industrial fan are as follows.

Maintenance Steps

  • Bearing lubrication
    • If bearings are not properly lubricated, it will produce noise and fail easily with high rate of material wear. Lubrication should be done as per the instructions of the manufacturer.
    • In case of oil lubricated bearings check the quality of oil and if necessary replace it with another one. In the case of grease lubrication, over lubrication will cause overheating.
    • Bearings should be protected from contamination.
  • Belt inspection
    • In case of belt driven fans, wear rate of the belt is high and they lose tension reducing their transmission efficiency. As the time continues the wear increases and produces noise which is due to energy loss of belts.
    • Belt inspection is important in case of large fans because of the amount of power loss. For example, in a 400 HP fan 10% loss in power results in 40HP power loss, which intern results in further decrease in power if not inspected regularly.
  • Motor repair or replacement
    • Motor is the important part of a fan which gives the necessary rotating power to the blades. Regularly maintained motor too have a finite life because overtime usage of the motor results in the breakdown of winding insulation.
    • Motors suffer insulation break down if winding temperature exceeds rated value for a longer period of time.
    • When it comes to either replace or repair of the motor, many factors are to be considered such as size, type, period of operation, electricity consumption etc.
  • Fan cleaning
    • The level of performance decreases due to the contaminant deposits on the fan. If contaminant deposit is not uniform, it results in unbalance problems and drive train wear. Contaminant deposit is mainly seen in the ventilation systems.
    • Fans that operate in heavy loads or high moisture air streams, should be regularly cleaned.
    • Fans like, backward inclined airfoil are highly susceptible to contaminant deposit. These deposits disturb the airflow rate, increase the operating costs and decrease the efficiency.
    • In material handling or in moisture content applications radial blade, radial tip blade and forward curved blade types are mostly used because of their resistance towards deposits of contaminants.
  • Leakage
    • Leakage degrades system efficiency and performance. Leaks are developed in flexible connections and in places where the vibration levels are high.
    • Leakage results in poor delivery of air or gases to the destination points. This intern results in the overall decrease in efficiency of the system.
    • Leakages points such as improper fittings, cracks in duct work and other flexible joints can be easily identified by inspecting visually.

Maintenance of a mechanical system result in increasing the life of an entire system, prevent any extra investment to the organization and provide safety to the work force in the work environment.

Manufacturing Processes Involved in Fan Blade

Blades of a fan perform the major action and hence they must be manufactured with utmost precise. The manufacturing process involves various steps such as casting, welding, hardening etc.

Resin infusion technology

The main principle of infusion is to suck a resin into reinforced fibers using vacuum. The vacuum decreases the pressure at one end of the fabric, allowing atmospheric pressure to force resin through fibers. The distance and speed by which we can infuse a fabric will be dependent on

  • Resin viscosity
    • Low viscosity allows the resin to travel more distance in the resin stack at given pressure gradient and it will create less drag in the induced stacks. This reduces the number of injection points needed on a large component and increases ease of infusion process.
  • Permeability
    • The permeability of a fabric is dependent on three factors, such as fiber diameter, fiber sizing and fabric type.
    • The permeability is the ease of flow of a metallic or plastic material when it is in liquid form.
  • Pressure gradient
    • The pressure required to infuse resin stack is dependent on the atmospheric pressure and the performance of the vacuum pump.
    • As the resin infuses into the fabric stack, the drag on the resin front begins to increase. The amount of drag is directly proportional to the volume of infused fabric stack and its permeability. So, when a given quantity of fabric stack is infused, the drag will be equal to the original pressure gradient, and the infusion will halt.
  • Infusion process
    • The infusion carried by several steps which are to be performed by different equipments in the system. The parts are
      • Resin feed station
      • Sectional vacuum line
      • Resin feed line
      • Resin flow front
      • Vacuum pots to collect resin
  • Process
    • When the vacuum bag is fully pressurized and bridges are closed, the component is ready to be infused. If the resin is mixed manually, this is now coupled with a short rest time to allow the majority of air added at mixing to arrive at surface.
    • The speed of the resin is controlled by valves on the inlet pipes. The speed of the resin is high at the beginning of infusion and this leads to extra lag on infusion creating dry spots which can exhaust the resin supply before batches are mixed.
    • When process is running in controlled manner, more resin is mixed before opening the next set of valves. The set of valves open when the entire resin front has passed the feed line at bottom and top of laminated stack. This causes increase in speed of resin flow and increases pressure gradient by removing quantity of fabric in drag. The process is repeated until the entire component is infused with resin.
    • This process has potential unpredictability for every component mainly in resin flow and susceptibility of system to failure generally caused by vacuum integrity.

Fan blades must be of precise design. So they must be manufactured with special process in order to have better efficiency.

Materials used in Industrial fan blades

One of the most important part in an industrial fan is blade. The extreme conditions in an industry may affect the blades of a fan. These extreme conditions may not be same in all industries. So, fan blades must be made of different kind of material based on the industrial use.

  • Aluminum alloy(EN AC-Al Si12Cu1(Fe)(Al))
    • This alloy has a temperature range of -60oC to +245o
    • This alloy has an maximum tensile strength of 240MPa
    • Yield stress of this material has an offset, so it has proof stress which has a value of 140MPa
    • The hardness of a material is given by the Brinell hardness number, which is 40 and can take a load of 500Kgs.
  • Glass reinforced Polyamide(PAG)
    • This can with stand temperatures of up to -40oC to +120o
    • Mechanical properties at dry as molded
      • It has a tensile strength of 165MPa.
      • This material has an impact strength at different temperatures
        • At 23oC: 11KJ/m2
        • At -30oC: 9KJ/m2
      • It has a tensile modulus of 8.2 GPa
    • Mechanical properties at 50% relative humidity
      • Tensile strength of 100 MPa
      • Impact strength at different temperatures
        • At 23oC: 17KJ/m2
        • At -30oC: 9KJ/m2
        • The Young’s modulus of the material is 5.6GPa.
      • Anti-Static Glass Reinforced Polyamide(PAGAS)
        • This materials can sustain in temperature range of -40oCto +110oC
        • The tensile strength of the material is 85MPa
        • The material is tested for impact strength at three different temperatures.
          • At 23oC: 10KJ/m2
          • At 0oC: 8.5KJ/m2
          • At -40oC: 6GPa
        • The flexural modulus of the material is 6 Gpa.
  • Glass reinforced polyamide industrial quality(PAGI)
    • This material has a temperature range of -40oCto +110o
    • Mechanical properties at dry molded
      • It has a tensile strength of 145GPa
      • Impact strength
        • At 23oC: 9KJ/m2
        • At -30oC: 6KJ/m2
      • It has an Young’s modulus of 7.56GPa
    • Mechanical properties at 50% relative humidity
      • It has a tensile strength of 84MPa
      • Impact strengths of
        • AT 23oC: 14KJ/m2
        • AT -30oC: 6KJ/m2
      • It has an Young’s modulus of 5GPa
    • Vibration stabilized glass reinforced polyamide(PAGST)
      • This material has a temperature range of -40oC to +110oC
      • Mechanical properties of the material at dry molded
        • It has a tensile strength of 100MPa
        • Impact strength
          • At 23oC: 14KJ/m2
          • At -30oC: 6.5KJ/m2
        • Young’s modulus is 5.1 Gpa.
      • Mechanical properties at 50% relative humidity
        • It has a tensile strength of 66MPa
        • Impact strength
          • At 23oC: 19.6KJ/m2
          • At -30oC: 7.4KJ/m2
        • Young’s modulus of 3.4GPa
      • Glass-reinforced polypropylene(PPG)
        • It has a temperature range of -10oC to +90oC
        • Mechanical Properties of the material
          • Tensile strength of 85MPa
          • Impact strength
            • At 23oC: 10KJ/m2
            • At 0oC: 8.5KJ/m2
            • At -40oc: 7KJ/m2
          • Flexural modulus of the material is 6GPa

An appropriate material is used based on the requirement of industrial environment. The working life of a fan will be determined by the material of the fan blade.

Few Facts about Dentist Drill & It’s Uses

Today, people are suffering with various dental problems caused due to lack of hygienic dental habits. Build up of food particles inside the gaps of teeth lead to tooth cavity and its decay. Failing to clean the food particles leads to development of bacteria on teeth and it becomes tough to clean with brush. Hence one of the alternative methods to clean teeth can be done by using dental drill.Dental Implants Cost

Dental drill is a tool used by dentists to clean and remove plaque from tooth’s surface and to bore through tooth enamel. Modern dental drill has made dentists to work more accurately and quickly than ever before with less pain.

Parts of a dental drill

  • Turbine type: Rotary system in an air powered powered drill contains an impeller/ rotor mounted on a spindle that rotates at high speed to catch air from the compressor
  • Hand piece: The gears, motor and drive shaft are positioned inside the hand piece made of either titanium or plastic.
  • Drive shaft: Several gears are attached to the drive shaft and these toothed wheels transfers the rotary motion along the length of the drill.
  • Dental Implants London

  • Drill bit: These drill bits should be hard enough to wear away the tooth enamel and hence made up of hardest materials like tungsten carbide and some are even tipped with diamond.

Working of dental drills:

  • Modern dental drills are powered by air driven or electric motors. The other components of today’s dental drill are gear, hand piece, tungsten drill bit.
  • A series of drive shafts and gears are present inside the drills hand piece that transfer rotary motion from power supply to the tungsten drill bit placed in the head piece.
  • Drills that are motorized electrically can rotate about 30,000 rpm. For a drill that is turbine powered, a compressor helps to convert pressurized air in to mechanical energy thus rotating the tungsten drill bit at over 300,000 rpm.
  • Cosmetic Dentist London

  • New technologies which include air abrasion drills and laser improves the experience of dentist by providing drills fr removing decay without generation of noise, heat and other vibrations.

Uses of dental drill

  • To prevent various dental diseases dentists use dental drills for treating the damaged tooth enamel.
  • It is used to clean up the food materials inside the teeth cavities.
  • Dental drills are helpful for people suffering from pain due to dental problems.

Read the rest of this entry »


Environmental and Nuclear Safety Labor Laws for Workers

If you are working in a nuclear or environmental related industry, then, as an employee of such sector, you must be aware of a few labor laws, to seek your grievances redressed under those Acts, within the specified time period for your safety. To know those laws, go through the following information.

Asbestos Hazard Emergency Response Act (AHERA)
This Act provides the retaliation protection for the workers reporting about the violations of environmental law concerning asbestos in both public and private nonprofit elementary and secondary school systems. Here, the employees or the workers must complaint about the violation of the Act within 90 days from the date of violation.

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)
The time period for making a complaint about the violation is only 30 days. Under this Act, the employees who report about the regulatory violations including spills, accidents and other emergency releases of wastes into the environment are protected. Not only this, this act also protects the employees reporting violations related to cleanup sites of abandoned or uncontrolled hazardous waste.

Clean Air Act (CAA)
This Act needs the workers to complaint about the violation within 30 days, after the violation of the Act. It gives the retaliation protection for the workers who report the violation of this Act which provides for the enforcement of standards and the development with respect to the air pollution and air quality.

Federal Water Pollution Control Act (FWPCA) or Clean Water Act
This Act also requires the complaint to be filed within 30 days from the date of violation of this law. One of the things this law provides for the employees reporting about the violation of law controlling water pollution is to counter Act.

Energy Reorganization Act (ERA)
This Act gives 180 days’ time for the employees to lodge a complaint on violation of Atomic Energy Act (AEA). It protects those specific employees (employees of contractors, operators and subcontractors of nuclear power plants licensed by the Nuclear Regulatory Commission, and the employees of contractors working with Department of Energy under a contract pursuant to the Atomic Energy Act) of nuclear industry who have reported regarding this violation.

Safe Drinking Water Act (SDWA)
One of the many things this law provides for the employees is to report about the violation of this law is, when all drinking water systems fail to make sure that their water is drinkable as determined by the Environmental Protection Agency. This Act has 30 days’ time to complain about the violation.

Occupational Safety and Health Act of 1970
It gives retaliation protection for those workers who exercise various rights that are guaranteed under this Act that include participating in an OSHA inspection and filing a safety and health complaint with OSHA, within 30 days after the violation of this law.

Solid Waste Disposal Act (SWDA) or Resource Conservation and Recovery Act
It gives the retaliation protection which is one among the other things to all those workers who report about the violation of laws concerning the regulating of the disposal of solid waste. To make a complaint about this Act, the workers have 30 days’ time from the time of the violation of this act.

Toxic Substances Control Act (TSCA)
One of many things that this Act provides to those workers who report about the report violations of regulations that involve distribution, manufacturing and the usage of certain toxic substances is to counter Act, after the complaint is received by OSHA within 30 days from the violation of the act.
Read the rest of this entry »


Styles of Kitchen Sinks

There are different styles of sinks you can get installed in your kitchen to make it look great. A sink in the kitchen forms an important part for cleaning up, and should withstand daily usage. Choosing the right style of sink is important for your kitchen.

This article gives information regarding the various styles of kitchen sinks and their advantages they provide comparative with other models.

Types of kitchen styles
Farm house

  • This style makes a characteristic of farmhouse where it is a large forward facing section which replaces a particular section of the counter.
  • People who look for country style or traditional designs opt for this style of kitchen sink.
  • Though single bowl sinks are common, these style of sinks are available both in single and double bowl varieties.
  • Farm house sinks requires more work to install and the counter have to be designed specifically to accommodate it.

Top mount

  • Also called drop in sinks, these are inexpensive and are easy to install.
  • It forms one style of kitchen sinks which have to be dropped into a hole in the counter top.
  • Top mount sinks feature a lip or rim which holds the sink in place and gives them a finished look.
  • The rim of the sink excludes the need for a support system internally under the counter.
  • Top mount sinks don’t have a modern appearance as is case of mount sinks, and there is a chance of scum and dirt accumulating between the counter and the rim of the sink.

Under mount

  • Under mount sinks doesn’t have rim or lip and is mounted underneath the counter.
  • The edge of the counter drops off immediately in to the sink basin.
  • In addition, the absence of crevices and grooves that are usually present in the top mount model makes them to clean properly such that no food or particles gets accumulated and gives a modern look.

Single bowl

  • Single bowl basins are available in compact size thus making them ideal for situations with less space.
  • A large single bowl basin offers more advantages comparatively because large basins enables to clean large dishes more easier.
  • Even cleaning the single bowl sinks is much easier due to the reduced number of edges and corners present and are typically cheaper than two or three bowl varieties.

Double bowl

  • Majority of the modern kitchen sinks feature two bowls and ensure flexibility to the user.
  • Double bowl sinks come in varied configurations such as two equal-sized bowls of same depth, two equal bowls of different depths, unequal size bowls, etc.

Read the rest of this entry »

Tags: ,

Things to Consider Before Registering a Domain Name

site monitoringAre you looking for a domain name for your website? Just don’t hurry. Read this article to help you understand a few important things, before you purchase a domain name. You need to look for few factors, before you finally select the domain name. Know each of those factors in detail from the following information.

Check for various types of domains, their availability and history
Before you start the process, determine which domain name you need for your website. Based on that information, start searching for various similar domains that caters for your requirement. Also, check for the availability of domain name in few domain name providers. Sometimes, the domain you have selected might have already been purchased. In that case, try to add relevant keyword and search. After several searches, you may get a list of suggested domain names. Then, you need to narrow down the list to 2 or 3 choices. Just choose the most relevant one from the list.

Not only this, you should also check the history of each domain name; and it is mandatory for your site to not get into troubles or problems. For few domains, there is a chance that they penalized by the Google. So, the website owners will leave the domain name without going for its renewal. In that case, if you purchase that domain name, you may get into troubles.

Avoid trademark infringement
In your research process of domain name, you should also consider avoiding trademark infringement. You should thoroughly check whether the domain name that you have selected doesn’t have trademark rights over or the names that resembles your competitor site’s domain name that may lead to some sort of confusion. See to it that the domain name you have chosen doesn’t violate someone’s trademark.

Get rid of confusing, long, tricky domain names
While selecting the domain names, few precautions you need to take in the name – not picking the abbreviation, hyphens, numbers, etc.; not taking too long names that are hard to type, avoid tricky names that confuse the users. Not following these guidelines may decrease your website traffic and thereby affecting your business. So, better go with simple domain name by choosing wisely from the required and available names.

Try to choose top-level extensions
Choosing the name extension also plays a major role. Try to pick the top-level popular domain such as .com, .org etc., if your business is global; otherwise, choose country based top level domain. This helps in boosting rankings of your site.

Try to follow these tips and register a fitting domain name for your website.
Read the rest of this entry »


Factors to consider while estimating the cost of an used car

Buying an used car can make people get in to situations either by getting the value they pay or paid less amount and getting cheated. Knowing the right cost of an used car is a difficult thing to estimate. Many factors have to be considered before making the final value. In this article few factors which are to be considered while for determining the rate of an used car are mentioned.

Frequency of its repair:car dealer marketing

  • Any damage to the car reduces its value and people expect to pay higher cost for the vehicle which has never been damaged than in selecting the car which has been repaired over and over.
  • Damage knocks out the things inside the vehicle which either may alter the chassis shape where it cannot be brought back to the normal position again.
  • Hence the number of times car has been damaged and repaired makes an important factors while estimating the cost of used cars.

Exterior and interior condition of the car:

  • The condition of the car both under the hood and over the hood plays an important role while estimating the price.
  • Exterior paint, seats condition, working condition of the engine all make an important things to be considered.
  • Also ensure that the spare parts of the used car are available in the market or not before buying it.
  • Cars with better condition fetch more prices than the one which is not in a proper condition.
  • In order to get more prices the vehicle should no have minimal dents and scratches.

Mileage of the vehicle:

  • It plays a major and important deciding factor while estimating the used car’s value.
  • If the car has been driven more in a short time it shows that its been in to greater extent of wear and tear and obviously leads to lower price.
  • Used cars which have not been driven for more distance will have higher price.
  • By using odometer or on board diagnostic scanner II one can check the actual mileage of the car.
  • Fuel pumps

Modifications and extras:

  • Few vehicles have modifications done after market which either may have the positive or negative impact on the vehicle’s cost.
  • Vehicles which are modified or upgraded require special evaluation for making the right value.

Following are three steps for pricing an used car:
1. Gathering information about the car

  • Year, make, model and trim level.
  • Current mileage
  • Condition of your car
  • Maintenance and repairs completed since you’ve owned the car

2. Research Local Used Car Values

  • Research used car prices for similar cars in your area.

3. Determine Your car’s Price

By looking at the above information one can easily make out what factors have to considered while pricing an used car.
Read the rest of this entry »


Medical Pocket Calculator And Its Use In Measuring Acoustic Signals

A measuring medical pocket calculator is used for measuring acoustic levels, a hearing aid battery tester, percent hearing loss and frequency specific in hearing , hearing thresholds of the general population. With the usage of cheap and micro controllers it is possible to build a pocket calculator for needs in medical filed. .Since their invention pocket calculators have become routine accessories of everyday life. As it is cheaply available it can be easily developed for a particular application. Instead of using a computer screen for some medical areas the general calculators can be turned in to medical calculators. Medical personnel feel complex using with too many keys and functions, which they do not need and understand. Hence an application-specific calculator can give the desired information faster to the end user thus minimizing errors. The application specific measuring calculator was found to be helpful in everyday routine work.

Design of a basic medical pocket calculator
The hardware is built around a BASIC-Stamp micro-controller and includes a keyboard, a liquid crystal display, a dual analogue-to-digital converter, digital outputs and a serial port for
data exchange with a personal computer. The software is based on a programmable calculator and can be used to suit particular needs.

Steps included in designing:

1. A basic calculator will be programmed in two versions for adding 3 and 5

  • Reversed polish notation (RPN).
  • In this version for addition the operators are used in this way [3] [ENTER] [5 ] [+ ]
  • Algebraic data entry.
  • In this version of programming the addition follows to be [3 ] [+ ] [5 ] [= ]

2.Higher mathematical functions like square root and logarithm are included.

3.conditional and unconditional branching of the steps is done automatically.

All of the features mentioned take 66 % of the available memory. Thus , leaving sufficient space for specific operations.

A pocket calculator for audiology test

In this pocket calculator for audiology test the less important features like absolute values , integers are removed and other functions including the basic programmable were kept.
The following specialized calculations for audiology test are added :

• Calculation of percentage of hearing loss from hearing thresholds
• Percentage of population with poorer hearing thresholds as a function of frequency and age
• Conversion of linear amplitude to decibel (dB) and vice versa.
• Conversion of dB Sound Pressure Level to dB Hearing Level (normal) and vice versa.
• Measuring the voltage of batteries for hearing aids and speech processors for cochlear implant


  • It can be used in measuring the body mass index in general population.
  • It can be used to know the percentage hearing loss of an ear.
  • The hearing threshold level can be known.

Advantages over other non specific pocket calculators :

  • No start-up time is required to select the necessary software application.
  • It is highly portable.
  • No need to use large computer screen between the physician and the patient for displaying the results.

Hence in present days the use of pocket calculators specifically for medical use with a particular application is considered useful present days. .With its capability to measure electrical parameters directly and to download data via the personal computer, special function outside the scope of commercially available calculators can be realized.
Read the rest of this entry »