Invented by Donald Shell in 1959, Shell sort is the most efficient of the O(n2) class of sorting algorithms. It is also the most complex of the O(n2) algorithms. This algorithm is similar to bubble sort in the sense that it also moves elements by exchanges. Shell sort begins by comparing elements that are at distance d. With this, the elements that are quite away from their place will move more rapidly than the simple bubble sort. In each pass, the value of d is reduced to half. In each Read More

A DHCP reservation is a permanent IP address assignment. It is a specific IP address within a DHCP scope that is permanently reserved for leased use to a specific DHCP client. Users can configure a DHCP reservation in their DHCP server when they need to reserve a permanent IP address assignment. Reservations are used for DHCP enabled devices like print and file servers or other application servers that always have the fixed IP address on the network. A reservation consists of the following information: Element Description Reservation name Name that Read More

Believe it or not, this isn’t meant to be inflamatory. This is an honest reminder of showstoppers that persistently prevent Ubuntu from becoming what I really do want it to become, and what I think it has a chance of achieving: a complete replacement of Windows or OSX. In fact, I will confess that I like the user interface on Ubuntu more than one on Windows, and find it almost on par with the one in OSX. You might even find me proclaiming Ubuntu as the OSX of the PC Read More

Hotmail, which the Microsoft Corporation owns and operates, is a free web based email program that is extremely similar to other types of free web based email providers. Hotmail offers its users 1 gigabyte of storage for their emails and attachments. Each attachment included in an email message cannot exceed 10 MB. Accessing a Hotmail Email There are two ways to access a Hotmail email. The first is through any computer with an Internet connection and a web browser and the second is through POP3 access. POP3 access allows users Read More

With over 750 million active users, offices in 13 different countries, and over $2 billion in annual revenue, many users wonder how Facebook makes money, considering that the majority of the social networking platform is free. Though Facebook clearly makes money through advertisements, many users cannot see how this has turned Facebook into one of the largest companies in the world.   Facebook Ads It is true that Facebook makes much of its money from advertisements that are placed on the website’s right border. Additionally, ads can be seen in Read More

The causes of the “0x800a138f Windows Update Error” are plentiful, and there are quite a number of ways to go about fixing this problem. The steps used to repair this error, are similar to the steps completed to repair the 0x800a0007 Windows Update Error. These steps include correcting the date and time settings, the language settings, and disabling an antivirus or firewall program. Having the wrong computer settings will produce the “0x800a138f Windows Update Error.” The simplest computer settings to change will be correcting the date and time settings. You Read More

Audacity is an audio recording and editing software that allows users to record audio clips of an unlimited size then edit them by adding in special effects and/or dragging entire clips into different positions. Audacity also allows users to delete clips, enhance specific parts of an audio clip, and change the pitch of voices within an audio clip. Audacity is not considered a “professional” audio editing software nor is it considered a mixing software, but it is considered one of the best free audio recording programs on the market.   Read More

Monitoring DNS with the DNS Console The DNS management console includes functionality that enables you to use the console to monitor DNS activity: Event Logging tab: You can access the Event Logging tab located within the Properties dialog box of the DNS server to specify the DNS events that you want to monitor. Through the Event Logging tab, you can limit the events which are written to the DNS Events log. Monitoring tab: The Monitoring tab is also located within the Properties dialog box of the DNS server. This tab Read More

Ham Radio Software, also known as Amateur Radio Software, refers to computer programs designed exclusively for ham radio equipment. Once thought to be a means of communication between radio enthusiasts, ham radio now coexists with software including data and contest loggers, log books, Morse code tutors, and antenna design aids. In the 21st century there are several software companies that have developed programs specifically for amateur radio enthusiasts. Logging Software: Freedom and Functionality Most ham radio software programs pay acute attention to the logging features of their software due to Read More

According to J.M. Duran, data is of high quality when it is “fit for their intended uses in operations, planning and decision making.” In other words, if the data allows for an individual to do an effective job in operations, planning for something and making a correct decision, it is deemed to be quality data. It’s taken a step farther, though, when discussing an increase in data volume. It is important for the quality to stay the same even when more data is added. Definitions of Data Quality According to Read More