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Improving comprehension of process diagrams with Graphical highlights
Gregor Jošt, 2018, doktorska disertacija

Opis: The main purpose of business process diagrams is to facilitate the communication between the process-related stakeholders, which directly affects the decision-making. For this reason, they must be easy to understand. However, this is often challenging to achieve, since business process diagrams can become large and complex. This, in turn, can negatively affect their correctness and understandability. The goal of this doctoral thesis was to propose and investigate an approach that makes business process diagrams appear less complex, without changing the corresponding diagrammatic notation or the business process diagrams themselves. This was done by manipulating the opacity of graphical elements in order to emphasize the important parts of a business process diagram by lowlighting the irrelevant ones. The proposed solution, named Emphasis, implemented with opacity-based Graphical Highlight pattern, abbreviated as simply Graphical highlights, was subsequently applied to sample business process diagram, modeled in Business Process Model and Notation (BPMN). The analysis demonstrated that the structural complexity of the business process diagrams decreased when the proposed solution was applied. Afterwards, a Web application prototype was implemented, which supports the proposed set of Graphical highlights. Furthermore, we empirically validated whether Graphical highlights positively impact cognitive effectiveness of business process diagrams, and if the users will find the prototype implementation useful. To this end, an experimental research, which included 85 participants, was conducted. The participants were randomly assigned in either the treatment group (Graphical highlights diagram representation approach), or the control group (conventional diagram representation approach). In accordance with the definition of cognitive effectiveness, speed, ease, and accuracy of answering 26 comprehension questions were observed, along with the perceived usefulness of the prototype. The results of the analysis demonstrated that participants who used Graphical highlights significantly outperformed those that used the conventional approach in all experiment's observations. We can conclude that using Graphical highlights increases the cognitive effectiveness of business process diagrams, while the corresponding prototype implementation is perceived as being useful.
Ključne besede: process diagrams, emphasis, graphical highlights, cognitive effectiveness, controlled experiment, prototype implementation, BPMN
Objavljeno: 21.12.2018; Ogledov: 1368; Prenosov: 110
.pdf Celotno besedilo (3,40 MB)

Integration framework to support cooperation in product development process
Gorazd Hren, Anton Jezernik, Stanislav Lukšič, Andrej Predin, 2009, izvirni znanstveni članek

Opis: Virtual Prototypes become increasingly important and useful for engineers, since they provide the capability to evaluate mechanical designs under "real-world" conditions during different phases of their development. The aim of presented research work is to create and implement a computer framework to handle viewing and examination of virtual prototypes over the Web, to manipulate appearances of parts, enable exchanging parts or sub-assemblies simultaneously for evaluation, involving their functional behaviour. The presented framework finally enables the propagation of changes back to modelling system, avoiding repetition of virtual model preparation. The presented model enables cooperation of a broad set of participants in production process regardless of their computer experience.
Ključne besede: prototype production, product design, CAD
Objavljeno: 05.06.2012; Ogledov: 1241; Prenosov: 17
URL Povezava na celotno besedilo

Rapid prototyping processes give new possibilities to numerical copying techniques
Ivo Pahole, Igor Drstvenšek, Mirko Ficko, Jože Balič, 2005, izvirni znanstveni članek

Opis: Due to the appearance of numerically controlled machine tools the conventional copying from physical model has almost lost its importance. Instead, the model of numerical copying is widely used. Until recently, geometry could be copied predominantly in the touching manner and the manufacture of copied - measured shapes on CNC machine tools mainly did not pose o problem. However, because of the introduction of optical copying of geometrical data it is possible to copy the shapes which, sometimes, cannot be made by conventional machining processes (small radii of curvature, negative angles, etc.). The paper describes how these problems can be solved with layered technology processes within a very short time.
Ključne besede: manufacturing technologies, prototype generation, rapid prototyping, numerical copying, CAD/CAm, digitalization
Objavljeno: 01.06.2012; Ogledov: 1228; Prenosov: 79
URL Povezava na celotno besedilo

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