Thursday, November 15, 2012
Recently I’ve been looking for a tablet-friendly web gallery engine to browse our family’s photo archive. I’ve googled a lot, read couple dozen of reviews, and finally came up with a short list of five galleries to evaluate. Indeed, managed to install only three of them and, unfortunately, none of them was exact match to […]
Model-Document-Renderer is an evolution of Passive-View design pattern, suggested by Martin Fowler [1]. The difference is mainly in the terminology and in the suggested way of decomposing the application.
Goals The goal of this case-study is to make a short overview of the development tools for developing web-based business applications. The tools must (should) satisfy the following criteria:
Tuesday, December 29, 2009
Introduction ObjectTeams/Java (OT/J) is an extension to Java programming language that facilitates roles and collaborations as the first class language constructs. This article is an exercise on using (OT/J) for implementing collaborations. Subject area This exercise considers two bank operations – money transfer and fund cashing. The course of events for these two operations is […]
Wednesday, December 9, 2009
This article suggests an approach on adapting the Java programming language for defining static graphs and trees, gives an exercise on defining a microwave finite state automaton (FSA) using this approach and provides code sample for processing graph definitions
Tuesday, November 24, 2009
Where to keep SQL statements? This question arises almost for any more-less sophisticated Java application that accesses DBMS. Two most common approaches are: (1) as string constants in Java and (2) as text in external files. Both these approaches have significant drawbacks. Java strings get complicated when a string is too long to fit in […]
Abstract A dimmer is an electronic device that controls alternate voltage applied to a lamp through delivering a selected portion of the mains sinusoid. Engineer, designing a dimmer needs to estimate how big this portion should be to get a desired luminance level. This article uses a model of incandescent lamp, tungsten resistivity, and human […]
ErWin 7.2 does not provide support for PostgreSQL, indeed with few tricks it still can be used to model database and generate valid SQL code.
Wednesday, March 14, 2007
This is a maintenance release of the product that includes the following fixes: 1. SISAN v 1.1 1.1. Added SISAM88 hardware schematic 1.2. Fixed TX/RX typo on SISAM690 schematic 1.3. Fixed issue with beam pattern affecting ruler pattern 2. SISAM1 v 1.1 2.1. Fixed diagnostic failure, which made product unusable if high baudrate cannot be set 2.2. Fixed issue with […]
Thursday, December 7, 2006
Previous examples illustrated VELOOS programming aspects. This post provides an example of using object oriented paradigm for designing VELOOS application. Unlike the previous examples which were purely programming exercises, this example is dedicated to a utilitarian home appliance application and provides a "reference design" for VELOOS applications.