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Netstumbler is a very nice Windows-based tool for finding open wireless access points (this is also called "war driving"). NetStumbler is a Windows tool that allows you to discover 802.11a, 802.11b, and 802.11g wireless LANs. It includes GPS integration and a simple, intuitive user interface. Though primarily targeted at owners of wireless LANs, it has been the de facto tool for casual users such as "war drivers" since 2001.

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### Black-Scholes formula option value on-line calculator

The calculator below relates to the Black-Scholes model which is explained in detail on the Black-Scholes model page. You can use this calculator to find the value of a European call option using the Black-Scholes formula. This model is subject to assumptions discussed on the Black-Scholes model assumptions page.

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### What are the assumptions behind the Black-Scholes model?

The Black-Scholes Option Pricing Model is an approach used for calculating the value of a stock option. It can be used to calculate values of both call and put options. The Black-Scholes model is described in detail at this page: Black-Scholes model. This page provides an overview of assumptions underlying the Black-Scholes model.

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### Black-Scholes model

The Black-Scholes model is a tool for pricing equity options. The Black-Scholes model, often also called using its full name Black-Scholes Option Pricing Model, is an approach for calculating the value of a stock option, let it be a call option or a put option.

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### Put-call parity

Put-call parity is a financial relationship between the price of a put option and a call option. The put-call parity is a concept related to European call and put options. The put-call parity is an option pricing concept that requires the values of call and put options to be in equilibrium to prevent arbitrage.

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### Do not display last user name Windows setting (dontdisplaylastusername)

The dontdisplaylastusername is a very handy setting if you want to improve the security of your computer. Setting the Do not display last user name setting removes any user account names from the Windows logon welcome screen and forces you to enter not only your password but also your user name when logging in.

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### Enable Ctrl+Alt+Delete logon screen for Windows Vista

The Control+Alt+Delete or Ctrl+Alt+Del key combination is often used on the Windows login or logon screen to strengthen security of a computer. The same like in older versions of Windows, the Ctrl+Alt+Del combination can also be enabled in Windows Vista.

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### What is the difference between gpedit.msc and secpol.msc?

Gpedit.msc and secpol.msc both are tools for administering system and security policies on your computer. The difference between the gpedit.msc and secpol.msc is most visible on the scope of policies which those tools can edit. To start explaining the difference, we can say that the secpol.msc is a subcategory of gpedit.msc.

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### Quantitative Strategic Planning Matrix (QSPM)

Quantitative Strategic Planning Matrix (QSPM) is a high-level strategic management approach for evaluating possible strategies. Quantitative Strategic Planning Matrix or a QSPM provides an analytical method for comparing feasible alternative actions. The QSPM method falls within so-called stage 3 of the strategy formulation analytical framework.

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### SPACE Matrix Strategic Management Method

The SPACE matrix is a management tool used to analyze a company. It is used to determine what type of a strategy a company should undertake. The Strategic Position & ACtion Evaluation matrix or short a SPACE matrix is a strategic management tool that focuses on strategy formulation especially as related to the competitive position of an organization.

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