Problem description

Articles about different patterns usually begin with pattern’s general scheme. Further, the author of article shows the particular usage of a pattern, as an example. Let me break this tradition and begin with a specific problem, which can be found in business applications very often.
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Author: Dudarev Roman, Ph.D. of Engineering

Introduction

The article doesn’t pretend to absolute strict mathematical justification and completeness of the suggested algorithm. The article is a description of the solution Enterra Company got when developing cartographical system Enterra GIS for signing cartographical objects (i.e. buildings, constructions). The method can also be used for signing other objects.
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Introduction

Clients often contact us with they need a Corporate Portal or Website. Use of Microsoft SharePoint platform is one of the easiest and convenient ways to solve their tasks. In this article, I’ll try to briefly describe the powerful tool for creating similar solutions.

Microsoft SharePoint is a web-oriented platform for collaboration and document management. The solution can be used to create various web-sites with shared documents or dedicated applications (i.e. Wiki, blogs, and forums). SharePoint functionality is presented to the User through editable control elements that display data. Such web parts are placed on pages which in their turn are placed on the Portal and are available to the User via the browser.

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Author: Dudarev Roman, Ph.D. of Engineering

Introduction

Due to the wide spreading of computer technologies, which give an option to position objects on the Earth surface (i.e. GPS, GLONASS), there is a unique possibility to create computer systems that can be used in day-to-day functioning of an organization without considerable expenses. There are vehicle tracking systems of public transport and medical organizations and also navigators for private cars. All these systems have the same feature: there is a cartographical module on the basis. The module displays an interactive map and gives an option to track the set object. Our company has also developed the vehicle control system for organizations. The system consists of the several parts. Client module (developed in C# .Net 3.5 WPF) displays the map and the vehicles. Look&Feel of the Client Module is given in the picture below.

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The purpose of this report is to view a hypothetical retail environment and a RFID potential solution. We have addressed the application of RFID in the broadest possible way to provide for acceptance including most common offerings available currently. Of course certain elements are addressed as to ROI, price performance of tags and equipment and we have done so for the US retail market for applications in general retail.
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Author: Alexander Tretyakevich

Architectural Goals

The application architecture should address the following goals:

• Provide for sufficient level of the performance for a specific subsystem/business feature
• Be scalable to meet the needs for different lifecycles of the application (small at the start/growing as the popularity of the system will grow)
• Be effective (scaling of a specific feature shouldn’t require scaling of the entire system/global change of the application deployment environment)
• Be maintainable

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The article sets out a few key moments, which should be considered when developing software for terminals. Under a terminal in this document should be understood payment kiosks, self-service kiosks, internet access kiosks.

The User Interface

The system users mostly are not very much advanced in contemporary technologies. For over a number of years terminals have been equipped with touch screens. Owing to such screens, people feel at ease and can promptly select necessary items via the screen menu. In other words when developing a system we shall select a touch screen as the input and data display device. For simple systems, a 15-inch screen is quite enough. For a system with a more complex and advanced interface 17-inch displays would be a better choice.

Which Technology to Choose for UI

There are several options. The most common are Flash and HTML in a browser (browser in the full-screen mode or IE Active X). Flash + Celeron 1.7 GHz are enough for a payment terminal. However, for dynamic games like “one-handed bandit” such technologies are no good. (more…)

Target setting

The main target is creating the system to provide service for working with video podcasts (a collection of video files which is distributed over the Internet using syndication feeds for playback on portable media players and personal computers) recorded by users and uploaded to the server. The access to the video should be provided on user’s request or via user’s connection to the broadcasting channel in real time. A number of users (privileged ones) should have the ability to create the podcasts (i.e. to upload digitized video of standard formats (AVI, MPEG2) recorded by personal video camera). All the users should have the ability to review the podcasts via web-browsers as a part of web-page.
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Lately, I’ve been working on a geographically distributed clustered web system and got several ideas I would like to share. All of them are written by blood, sweat and pieces of lost dollars.

Don’t rely on stability
“Yes, this is obvious” – you may say. But I was knowing this from start the project also. However during deployment and preproduction testing the life has shown many new tricks to me. Building network system all conscious developers will introduce some retries/recovery routines. However, absence of components stability has many implicit consequences.

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