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Weaving Ada 95 into the .Net EnvironmentThis paper explains our efforts to add Ada to Microsoft’s family of .NET languages. There are several advantages to weaving Ada into the Common Language Environment provided by the .NET environment. This paper explains our approach and current progress on the research. We provide the means to extract Ada specification files from Microsoft Intermediate Language (MSIL) code and compile Ada programs into MSIL.
Microsoft’s .NET environment provides a large set of object- oriented libraries for application development, targeted especially for web-based applications. [11,12] It is an entirely new framework for programming Windows (and possibly other) machines. One of the key goals of .NET was to provide language interoperability. Ada shares similar goals, and was the first language to include mixed-language pragmas as part of its specification. Our A# project seeks to create a fully-interoperable environment for an Ada programmer to use .NET. Ada programmers will be able to use libraries written by other .NET programmers even if the libraries are written in other languages. Ada programmers will also be able to share their libraries with programmers using other languages.
This paper presents research being done at the Air Force Academy on the A# project. We will discuss our approach for compiling Ada into MSIL, extracting Ada specifications from MSIL, and our progress to date.
MICROSOFT’SCOMMON LANGUAGE RUNTIME
In building the .NET Environment, Microsoft has found a way to provide language independent development coupled with platform independent execution. Their Common Language Environment (CLR) provides developers with a choice of several different programming languages such asASP.NET Page Life Cycle & Common Events pdfThe page request occurs before the page life cycle begins. When the page is requested by a user, ASP.NET determines whether the page needs to be parsed and compiled or whether a cached version of the page can be sent in response without running the page
In the start step, page properties such as Request and Response are set. At this stage, the page also determines whether the request is a postback or a new request and sets the IsPostBack property. Additionally, during the start step, the page's UICulture property is set.
During page initialization, controls on the page are available and each control's UniqueID property is set. Any themes are also applied to the page. If the current request is a postback, the postback data has not yet been loaded and control property values have not been restored to the values from view state
During load, if the current request is a postback, control properties are loaded with information recovered from view state and control state
During validation, the Validate method of all validator controls is called, which sets the IsValid property of individual validator controls and of the page
Download ASP.NET Page Life Cycle & Common Events pdfProgramming Guide for Linux USB Device DriversThe development of the Linux USB subsystem started in 1997 and in the meantime it was redesigned many times. This implied various changes of its internal structure and its API too. So it is even hard for experienced device driver developers to keep up to date with all ongoing discussions and current changes.
This document should give detailed information about the current state of the USB subsystem and its API for USB device drivers. The first section will deal with the basics of USB devices. You will learn about different types of devices and their properties. Going into detail you will see how USB devices communicate on the bus. The second section gives an overview of the Linux USB subsystem [2] and the device driver framework. Then the API and its data structures will be explained step by step. The last section of this document contains a reference of all API calls and their return codes.
The Universal Serial Bus
In 1994 an alliance of four industrial partners (Compaq, Intel, Microsoft and NEC) started to specify the Universal Serial Bus (USB). The bus was originally designed with these intentions:
- Connection of the PC to the telephone
- Ease-of-use
- Port expansion
The specification (version 1.0) was first released in january 1996 and the latest official version 1.1 was released in september 1998 [4]. The document is still under development and a version 2.0 was announced in 1999. More information and all specification papers can be found in [1]. The USB is strictly hierarchical and it isIntroduction to MySQL on WindowsMySQL is an open source relational database management system which is quite popular for light-weight web applications. Over the last few years, the product has also added some features which allow it to be used for larger business tools. This paper will provide an overview of this software on Windows. MySQL does not have as many features as PostgreSQL, and while many of the more advanced features are not as mature. However one would expect it to perform substantially better than PostgreSQL on Windows because of its thread-based architecture (PostgreSQL uses a process-based architecture instead).
Note for Vista Users
The MySQL installation requires that User Account Control (UAC) is disabled. If you do not do this, the installation will fail when the system tries to start the service, even if the user allows the change. To disable UAC, go to the Control Panel:
Download pdf Introduction to MySQL on WindowsMaya Tutorials - Realistic Snow1. Create a NURBS surface and deform it a bit to get a nice-looking bumpy terrain.
Create a camera
2. Open the Hypershader. Create a Blinn node and edit it as shown below
I highlighted in red the attributes that need to be edited. Don't forget the slight blueish Ambience, because snow is always a bit blue when in sunlight. Also add a light bump (on the example, I use the Turbulence texture, available in the highend3d.com library. Rename the blinn1 as snowBlinn.
3. Next, create a 2D Fractal texture and edit it as follows:
This texture (fractal1) will simulate the ice crystals that glitter when lit. I use the 2D Fractal node cause it has a Time attribute that allows to phase it. You must also check the Animated box. The phase depends on the value of the Time attribute. This attribute will be later linked to the camera's position using an expression. Also check the Invert box.
4. Remap the fractal1 node (click the Insert button in the Color Remap field), and edit the Ramp as shown:
Download pdf Maya Tutorials - Realistic SnowDefeating Compiler-level Buffer Overflow ProtectionBUFFER OVERFLOW ATTACK SARE THE most popular method intruders use to gain remote and privileged access to computer systems. Programs that fail to use appropriate bounds checking can allow an attacker to write data beyond the intended boundaries of a buffer and thus possibly corrupt control structures in the program. This enables an attacker to execute arbitrary code with the same privilege as the victim process. An attacker’s preference is usually to overwrite the saved instruction pointer that is pushed onto the stack before a function call or to overwrite a function pointer that will be used later in the program. It is also possible to use these attacks simply to overwrite other data.
This kind of attack is harder to prevent but, fortunately, is less common than the previous type and is not discussed here. Buffer overflows first gained attention with the release of the famed Morris worm which exploited a buffer overflow in fingerd [1]. Despite the attack used in the Morris worm, buffer overflows did not become popular until the release of two papers that detailed the discovery and exploitation of these vulnerabilities [2,3]. This paper discusses vulnerabilities in two compiler-level protection mechanisms, StackGuard and Point-Guard. While this paper takes a critical look at both of these solutions, it does not intend to make them seem insignificant. The attacks described in this paper help to show how StackGuard and PointGuard should be complemented to construct a more complete protection system.
Download Defeating Compiler-level Buffer Overflow ProtectionIntroducing the all-new 2008 Audi A5all-new 2008 Audi A5. .. Page 2. Page 3. Indulge the senses. An utterly new approach to touring. Overall concept: Audi enters a new model segment.
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Download this PDFGraphical Interfaces for C#This paper is focused on a pure implementation task rather than in explanation of a general theory or specific graphical algorithms. However, the described solution seems to be interesting and useful to people within a computer graphics community. The reason is simple: there are many people using the OpenGL, Visualization Toolkit [1] (VTK) or DirectX, who want to benefit from .NET Framework features. Simply, it is a runtime environment, which hides the operating system layer to the application and unifies single machine and network environments into one (see [2]). Later, we will describe what a .NET Framework stands for in more detail.
The .NET Framework seemed to be very interesting for people from the area of computer graphics that we decided to implement some of the well-known graphical interfaces in it. The VTK, OpenGL and DirectX have been taken into account. These interfaces are widespread and having them prepared in the .NET Framework, it is easy to extend our old working algorithms with new features and functionality. For example, a developer used to write a code for OpenGL can simply continue with a development with it, build it in .NET Framework and easily add whatever other network functionality he wants.
We have implemented the VTK, OpenGL and DirectX interfaces for use within the .NET Framework. It fulfills well our objectives given at the early beginning. Now, graphics developers can also work with the fully object oriented programming (OOP) language C#. It allows more inheritance, deriving and polymorphism into the computer graphics.
Download pdfWeb 2.0 Re-examined: The Paradigm Shift, Technology Stack and Business ValueThis essay re-examines web 2.0 by looking at its technology stack and impact on enterprise computing, in contrast to the common consumer-centric point of view. Categorizing the landscape into Consumer Web 2.0 and Enterprise Web 2.0, the essay establishes a web 2.0 technology stack that forms the foundation of a paradigm shift called “architecture of partition”. In the end, the business impact of web 2.0 technologies on enterprises is presented.
Web 2.0: the State of Confusion
Web 2.0 is exciting, but there are lots of confusions today, even among noted experts. There are two schools of opinions among experts. The first school is critical of Web 2.0. This group is represented by Tim Berners-Lee and Russell Raw. Their opinions are:
1. There is nothing fundamentally different between “Web 1.0” and the so-called “Web 2.0”;
2. Web 2.0 has nothing new and is based on the same technology as of Web 1.0;
3. Web 2.0 is just a piece of jargon.
The second group of experts are Web 2.0 champions. This group is represented by Tim O’Reilly, Paul Graham and Dion HinchCliffe. This group argues that:
1. Web 2.0 is here and it is big;
2. “Architecture of Participation”, “the Network Effect (social network)”, and “Harnessing the collective intelligence” are fundamentally new and different from web 1.0;
3. Web 2.0 is more about a paradigm shift in how people use the web, less about new technology. “Web 2.0” is not based on a technology shift, but rather a usage paradigm shift.
Despite the confusion, the term “Web 2.0” is getting widelyHP Compaq 2710p Notebook User Guide pdfuickSpecs HP Compaq 2710p Notebook PC Overview At A Glance Genuine Windows Vista Business*, Genuine Windows XP Tablet PC Edition, or FreeDOS Convertible tablet design starting at 3.7 lb/1.68 kg and 1.11 inch thin 12.1-inch diagonal Illumi-LiteWXGA ultra wide-viewing angle display with Digitizer, Ambient Light Sensor, and optional Outdoor View
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