“OPENMODELICA is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage. Its long-term development is supported by a non-profit organization – the Open Source Modelica Consortium (OSMC).” OpenModelica aims to provide an enhanced, Open Source Modelica modeling and simulation environment and this thesis is an addition in this direction.  The purpose of this thesis is to create a web based graphical connection editor. There are other open-source connection editors available, but these editors were desktop applications. There is one web based editor but it is a textual editor. Desktop applications need installation and space on the local system. OMWeb connection editor is the first web based graphical connection editor that runs on a web browser. It’s a web platform for OpenModelica and provides the environment for modeling and simulation in the Modelica Modeling Language. The OMWeb connection editor can run on any system without the need for an OpenModelica installation. If a system is connected to the internet, and contains a web browser, it can run the OMWeb connection editor. The OMWeb connection editor uses Java Runtime Environment to run an applet in the browser. The user can create models graphically; but they can also be viewed in the textual format. The user can simulate and plot his models. The plot file generated for the model can be downloaded from the server.  The OMWeb Connection Editor uses Servlet to handle requests from the client. The servlet is responsible for the communication with OpenModelica Compiler. It also gets the results from OMC and sends them back to the client. In our case the browser is the client.

Modelica is an object-oriented equation based language to model complex physical systems containing mechanical, electrical and other types of components. It provides libraries that enable to simulate these systems. Many commercial and free simulation environments are available. It is maintained by the non-profitable organization called the “Modelica Association” containing members from different parts of the world. Many industries use Modelica for model based development. OpenModelica is an open source object-oriented equation based language based on Modelica. DrModelica is a guide to learn Modelica, and it provides a detailed tutorial for Modelica that range from beginner to expert level. OMNotebook document provides an interactive way to learn DrModelica. It provides series of tutorials that help to learn to use Modelica. It provides dynamic way to simulate models. OMSketch is a graphical editor to OMNotebook document. Its main aim is to provide shapes to OMNotebook document. The editor provides different shapes that can be drawn dynamically and also have properties such as colors, pen styles and brush properties. The shapes can be dynamically resized, translated and rotated. These operations can be performed on single shape and also on a group of shapes. Edit operations such as cut, copy and paste are supported. Keyboard shortcuts are also available to perform edit operations. The drawn shapes can be saved into different file formats such as png, bmp etc. These can also be open to edit and make changes. The OMSketch editor saves the shapes in regular graphical file formats with some information. The shape's properties are also saved into a file as text. Thus every saved shape from OMSketch contains the shape, and its coordinates and other properties. This makes it possible to edit the image when it is open in the editor. The main purpose of OMSketch is to embed shapes into OMNotebook document and also edit back from OMNotebook document to OMSketch. OMSketch is a very interactive and advance graphical editor for OMNotebook document.

Det här är till för att skapa ett system där andra webbutvecklare kunde skapa sina hemsidor online. Det webbutvecklaren inte behöver tänka på är att ha en egen webbserver, vilket kan vara ett problem för många om dom sitter vid datorer med begränsade rättigheter så att dom inte kan ladda ner och installera en webbserver. En annan bra fördel är att webbutvecklaren kan logga in vart som helst, när som helst och redigera koden till en hemsida. Skulle webbutvecklaren vilja ha sitt projekt på en egen webbserver, går det enkelt att ladda ner projektet.

Vortrag UNIX-Stammtisch 10/96

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The word journalist, and the domain of producers and texts that inhabit its boundaries, often lacks a clear and agreed definition. The dominant body of literature looks at journalists in the United States through a remote lens, locates them within a cadre of journalists operating out of a newsroom, and overlooks the multiple roles they inhabit at once. This dissertation represents an attempt to build on and extend the depth of definitions afforded the American print journalist offered in literature that dominates journalism studies. This dissertation utilizes critical textual analysis for a case study of journalists' letters to editors of journalism trade magazines to identify the patterned ways journalists define journalists. Deuze's (2005, 2007b) theory of the ideological definitions of journalists provides a framework for the analysis. Journalism trade magazines perform a special role as watchdogs of the press. Journalists who write letters to editors of these magazines are watching the watchdogs. This dissertation looks to those journalists' words to craft a nuanced understanding of the factors that shape the forces defining these journalists, their labor, and their pursuit of democratic ideals. Drawing from the corpus of letters published in American Journalism Review, Columbia Journalism Review, and Editor and Publisher, critical textual analysis identifies how discourses in the letters reflect or reshape traditional print journalists' self definitions. The result is a catalog of information that shapes an understanding of the letters within the individual ideological framework of the community of people who volunteer their opinions for publication in these journals. The dissertation works to develop a more complete picture of the ideology of traditional print journalists as it is defined in their own words.

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While Domain-Specific Languages (DSLs) offer greater expressiveness for domain-specific tasks than General-Purpose Languages (GPLs), they have smaller communities behind them and fewer resources available. This is often reflected in the quantity and quality of available tooling for DSLs as compared to GPLs. This disparity is particularly evident in the case of DSL in-editor support where developers have become accustomed to features such as syntax-highlighting, auto-completion, and context-aware renaming. Developing such tooling for DSLs is challenging due to the significant effort required to implement features from scratch. To address this problem, this thesis proposes Lever , a framework for building editor support for DSLs. To reduce implementation cost and stay lightweight, Lever utilizes existing language artifacts (the grammar and the existing tooling). It uses a rule-based system that adds the necessary semantics to map the Concrete Syntax Tree (CST) to a language agnostic Abstract Syntax Tree (AST) and Symbol Table (ST). Lever enables cross-editor compatibility through the usage of the Language Server Protocol (LSP). The practical use of Lever is demonstrated through a case study on building editor support for the P4 DSL. Furthermore, a comparison with Langium and MPS in implementing language support for the Protobuf DSL reveals that Lever offers greater ease of use and functionality for this use case. / Thesis / Master of Applied Science (MASc) / Domain-Specific Languages (DSLs) are specialized programming languages made to solve domain specific problems. They are powerful and efficient tools for developers working within those specific domains. However, creating editor support for DSLs (e.g., syntax highlighting, code completion), is challenging due to their smaller user bases and complexities involved in development. For this reason, developers using DSLs often lack the tooling they have become accustomed to with General-Purpose Languages (GPLs). This thesis addresses these challenges by proposing the Lever framework, a lightweight and adaptable solution for building language support tooling targeting DSLs. Lever leverages existing artifacts and a rule-based system to provide editor support, making DSLs more accessible and user-friendly. A case study using Lever to build editor support for an industry DSL demonstrates its practical application, while a comparison of implementing language support for the Protobuf DSL with Lever , Langium, and MPS highlights Lever ’s superior ease of use and functionality.