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500 Internal Server Error
This section provides a tutorial on how to troubleshoot the '500 Internal Server Error'. Several common causes of this error are listed.
2022-10-08, ∼199🔥, 0💬

Time Dilation - Moving Clock Is Slower
This section provides a quick introduction on time dilation, a phenomenon of difference of elapsed time between two events as measured by observers in different inertial frames that are moving relative to each other.
2022-10-06, ∼199🔥, 0💬

Command Line Tools Provided by Open Babel
This chapter provides introductions and tutorial examples on various command line tools provided by Open Babel. Topics include 'obconformer' to generate the best conformer; 'obfit' to superimpose two molecules; 'obgen' to generate 3D structures; 'obgrep' to search substructures; 'obminimize' to opti...
2022-10-06, ∼199🔥, 0💬

Minkowski Spacetime and Diagrams
This chapter provides an introduction of Minkowski spacetime and diagram. Topics include introduction of Minkowski spacetime model; events interval; Lorentz transformation; Minkowski diagram; demonstration of time dilation and length contraction in Minkowski diagram.
2022-10-05, ∼199🔥, 0💬

Installing Application to Tablet using "ant installd"
This section provides a tutorial example on how to install the debug package of my 'HelloAndroid' application to my Samsung mini tablet using the 'ant installd' command through the USB debugging interface.
2022-10-01, ∼199🔥, 0💬

Tablet Memory Usage
This section provides a tutorial example on how to view tablet memory size and usage.
2022-10-01, ∼199🔥, 0💬

Turning on USB Debugging on LG-V905R
This section provides a tutorial example on how to turn on 'USB Debugging' on LG-V905R Android tablets in the 'Settings &gt; Applications &gt; Development' area.
2022-10-01, ∼199🔥, 0💬

Establishing a Datagram Communication Link
This section describes how to establish a datagram communication link. A server application runs a datagram socket in listen mode and a client application connects a client socket to the server socket.
2022-10-01, ∼199🔥, 0💬

Updating Variables Who Share an Object
This section describes what is in an object variable - An object variable actually contains the object identifier that points to where the object is stored.
2022-10-01, ∼199🔥, 0💬

Archived: Publishing PHP Scripts as Web Pages
This section describes how to publish PHP scripts as Web pages on the Apache server.
2022-10-01, ∼199🔥, 0💬

PHP Version Pre-Installed on CentOS
This section provides notes to verify PHP version supported on CentOS and run a simple PHP interactive scripting session.
2022-10-01, ∼199🔥, 0💬

The "Array" Object Type - Arrays Are Objects
This section provides a quick description and a tutorial example script on the 'Array' built-in object type, which is used to create arrays.
2022-10-01, ∼199🔥, 0💬

"service" - Service Definition Element
This section describes 'service', a definition element that defines a service as one or multiple endpoints. An endpoint defines a binding to a communication address.
2022-10-01, ∼199🔥, 0💬

Commonly Used Types of Statements
This section provides a list of commonly used types of statements. Simple examples of statements are also provided.
2022-10-01, ∼199🔥, 0💬

Archived: Download and Install Latest JDK 10 on Windows
This section provides a tutorial example on how to download and install the latest version JDK, which contains the HotSpot JVM, on a Windows system. A simple Java program was entered, compiled, and executed to verify the JDK installation.
2022-10-01, ∼199🔥, 0💬

XSD Schema XML DOM Validation Errors
This section provides some errors from the XSD schema validation process on invalid XML files represented in Document objects using the JAXP API.
2022-10-01, ∼199🔥, 0💬

Converting Area from Square Meter to Square Foot
This section provides a tutorial example on converting area value from square meters to square feet.
2022-10-01, ∼199🔥, 0💬

NDFDgen - Response Message Sample
This section provides a response message sample of NDFDgen Web service.
2022-10-01, ∼199🔥, 0💬

"const" and "readonly" Variables
This section describes differences between 'const' and 'readonly' variables used in classes.
2022-10-01, ∼199🔥, 0💬

Most Popular Operating Systems
The most popular operating systems based on browser signature strings in log files for 252 days of year 2007.
2022-10-01, ∼199🔥, 0💬

What Is RPM
This section provides a quick introduction on RPM (RedHat Package Manager), which is a free and open packaging system on Red Hat Enterprise Linux as well as other Linux and UNIX systems.
2022-10-01, ∼199🔥, 0💬

"pathlib" - Object-Oriented Filesystem Paths
This chapter provides introductions and tutorial examples about 'pathlib' module. Topics include creating file path objects; manipulating file path components; managing files pointed by file paths.
2022-10-01, ∼199🔥, 0💬

JDBC Driver Types
This section provides some quick information about different types of JDBC drivers.
2022-10-01, ∼199🔥, 0💬

InnoDB (MySQL 5.5 Default Engine) Slower on INSERT
This section provides a tutorial example showing that InnoDB, the MySQL 5.5 storage engine, is about 1,000 times slower than MyISAM storage engine.
2022-10-01, ∼199🔥, 0💬

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