Formula for the nnth kk-Generalized Fibonacci-like Number

In this paper we provided a formula for the $n$th term of the $k$-generalized Fibonacci-like sequence, a generalization of the well-known Fibonacci sequence, having $k$ arbitrary initial terms, where the succeeding terms are obtained by adding its previous $k$ terms. The formula for the $n$th term of the $k$-generalized Fibonacci-like sequence was obtained by observing patterns in the derived formula for the nth term of the Fibonacci-like, Tribonacci-like, and Tetrabonacci-like sequence. The formula for the $k$-generalized Fibonacci sequence was also derived and was used in the process of proving the main result of this paper

A Semiotic Approach for Guiding the Visualizing of Time and Space in Enterprise Models

Part 2: Organizational Semiotics and ApplicationsInternational audienceEven if geographical aspects such as location are included already in the Zachman framework (as the where-perspective), it is not common to have detailed geographical aspects included in enterprise models. Cartography is the science of visualizing geographical information in maps. Traditionally the field has not included conceptual relationships that you find in enterprise models. Both cartography and enterprise modelling have developed guidelines for obtaining high quality visualizations. SEQUAL is a quality framework developed for understanding quality of models and modelling languages based on semiotic theory. In cartography such frameworks are not common. An adaptation of SEQUAL in the context of cartographic maps called MAPQUAL has been presented earlier. Differences between quality of maps and quality of conceptual models, pointing to guidelines for combined representations have been performed, and we try in this paper to investigate the utility of these guidelines in a simple trial. The result of the trial is presented, indicating that it is possible to represent conceptual, temporal, and spatial aspects in the same models in many ways, but that the choice of main perspective should depend on participant appropriateness

Proceedings of the 37th Hawaii International Conference on System Sciences- 2004 Building Citizen Trust Through e-Government

The trust of citizens in their governments has gradually eroded. One response by several North American governments has been to introduce egovernment, or web-mediated citizen-to-government interaction. This paper tests the extent to which online initiatives have succeeded in increasing trust and external political efficacy in voters. An internetbased survey of 182 Canadian voters shows that using the internet to transact with government has a significantly positive impact on trust and external political efficacy. Interestingly, though the quality of the interaction is important, it is secondary to internal political efficacy in determining Trust levels, and not significant in determining levels of external political efficacy (or perceived government responsiveness). For policy-makers, this suggests egovernment efforts might be better-aimed at citizens with high pre-extant levels of trust, rather than in developing better web sites. For researchers, this paper introduces political efficacy as an important determinant of trust as it pertains to e-government

On the cognitive effectiveness of routing symbols in process modeling languages

Process models provide visual support for analyzing and improving complex organizational processes. In this paper, we discuss differences of process modeling languages using cognitive effectiveness considerations, to make statements about the ease of use and quality of user experience. Aspects of cognitive effectiveness are of importance for learning a modeling language, creating models, and understanding models. We identify the criteria representational clarity, perceptual discriminability, perceptual immediacy, visual expressiveness, and graphic parsimony to compare and assess the cognitive effectiveness of different modeling languages. We apply these criteria in an analysis of the routing elements of UML Activity Diagrams, YAWL, BPMN, and EPCs, to uncover their relative strengths and weaknesses from a quality of user experience perspective. We draw conclusions that are relevant to the usability of these languages in business process modeling projects

Analyzing the Effect of the Collaborative Interactions on Performance of Requirements Validation

[Context] Requirements validation is critical in the pursuit of quality software. It usually demands the collaboration of multiple stakeholders with different perspectives. [Question] Our community has reported scarce experimental studies on the role of collaborative interaction in requirements validation. The goal of this study is to explore the effect of collaborative interactions on the performance of requirements validation. [Principal ideas] We performed a quasi-experiment involving 118 bachelor students to act analysts, and 40 volunteering students from the Social Sciences department to act clients. The requirements were specified using UML activity diagrams. The overall performance is measured in terms of efficiency (missing requirements correctly identified in a time interval), and effectiveness (degree to which the validation yielded the correct result). Moreover, we measured also subjects’ satisfaction on collaboration (questionnaire). [Contribution] We found that the teams composed exclusively of analysts showed better efficiency and effectiveness than mixed teams (client and analysts). However, for certain types of requirements, the mixed teams’ efficiency was superior. Also, the degree of satisfaction was higher among the clients than among the analysts. We end up with identifying future research topics