1,610,183 research outputs found
Heuristic usability evaluation on games: a modular approach
Heuristic evaluation is the preferred method to assess usability in games when experts conduct this
evaluation. Many heuristics guidelines have been proposed attending to specificities of games but
they only focus on specific subsets of games or platforms. In fact, to date the most used guideline to
evaluate games usability is still Nielsen’s proposal, which is focused on generic software. As a
result, most evaluations do not cover important aspects in games such as mobility, multiplayer
interactions, enjoyability and playability, etc. To promote the usage of new heuristics adapted to
different game and platform aspects we propose a modular approach based on the classification of
existing game heuristics using metadata and a tool, MUSE (Meta-heUristics uSability Evaluation
tool) for games, which allows a rebuild of heuristic guidelines based on metadata selection in order
to obtain a customized list for every real evaluation case. The usage of these new rebuilt heuristic
guidelines allows an explicit attendance to a wide range of usability aspects in games and a better
detection of usability issues. We preliminarily evaluate MUSE with an analysis of two different
games, using both the Nielsen’s heuristics and the customized heuristic lists generated by our tool.Unión Europea PI055-15/E0
Feature Based Machine Tool Accuracy Analysis Method
AbstractMachine tool accuracy is the most important performance parameters which affect the part quality. At present, a systematic machine tool accuracy evaluation method is necessary for the machine tool selection in process planning and shop-floor scheduling. This paper proposes an efficient feature based machine tool accuracy analysis method to enable machine tool capability evaluation about accuracy, and the mapping from the machine tool accuracy to the part feature tolerance is established in this method. The cutter is used as a bridge to transform the machine tool error to feature tolerance. The deviation of the cutter between the actual position & orientation and the nominal position & orientation is converted from the machine tool error according to the rigid body kinematics method. Then the feature error in the form of GD&T is calculated from the profile of the feature and the deviation of the cutter. A prototype system has been developed based on this research. An industrial case study shows that the methodology is effective
Differential equations and dispersion relations for Feynman amplitudes. The two-loop massive sunrise and the kite integral
It is shown that the study of the imaginary part and of the corresponding
dispersion relations of Feynman graph amplitudes within the differential
equations method can provide a powerful tool for the solution of the equations,
especially in the massive case. The main features of the approach are
illustrated by discussing the simple cases of the 1-loop self-mass and of a
particular vertex amplitude, and then used for the evaluation of the two-loop
massive sunrise and the QED kite graph (the problem studied by Sabry in 1962),
up to first order in the (d-4) expansion.Comment: 36 pages, v3 fixed a typo in Eq.(5.5
Language and tool support for event refinement structures in Event-B
Event-B is a formal method for modelling and verifying the consistency of chains of model refinements. The event refinement structure (ERS) approach augments Event-B with a graphical notation which is capable of explicit representation of control flows and refinement relationships. In previous work, the ERS approach has been evaluated manually in the development of two large case studies, a multimedia protocol and a spacecraft sub-system. The evaluation results helped us to extend the ERS constructors, to develop a systematic definition of ERS, and to develop a tool supporting ERS. We propose the ERS language which systematically defines the semantics of the ERS graphical notation including the constructors. The ERS tool supports automatic construction of the Event-B models in terms of control flows and refinement relationships. In this paper we outline the systematic definition of ERS including the presentation of constructors, the tool that supports it and evaluate the contribution that ERS and its tool make. Also we present how the systematic definition of ERS and the corresponding tool can ensure a consistent encoding of the ERS diagrams in the Event-B models
A new simplified daylight evaluation tool, description and validation against the standard method of EN 17037
A new daylight evaluation tool using a simplified assessment method to determine the daylight quantity provided to a typical room was developed. Its calculation method is based on a set of formulas integrating the main factors characterizing the indoor space and the outdoor context. The results are expressed as a corrected Glass-to-Floor ratio (GFR*) which is used as a proxy for the daylight provision. This value can then be used to attribute a rating or “Daylight score” to each space. The main finding is that the simplified method is an easy and relatively reliable estimation for daylight provision. A comparison of the tool with detailed daylight simulations according to the daylight factor method of EN 17037:2018 shows that a high correlation is obtained. The tool is applicable for any case which has conditions matching closely to the models and situations defined. Due to its easy implementation and the limited number of input parameters this evaluation method could be well suited for building passport schemes.publishedVersio
CONEVTO: Contract Evaluation tool for Software and Services Adquisition Organizations
Contracts play an important role during the period of time that the outsourcing relationship is in effect. If an organization decides to acquire software and services products, the contract is a fundamental mechanism to ensure that expectations are realized. This paper describes a contract evaluation tool for Software and Services Acquisition Organizations, to achieve this, a contract model and an evaluation method through the tool have been developed. This tool allows the acquirer to know the coverage level related to the clauses of a contract in order to selector reject it. Besides, a case study is presented
Student Evaluation of Teaching: A Case Study from School of Medicine (UNZA)
Purpose: This paper presents a case study of an academic department’s experience with evaluation. The purpose is to review the impact of student evaluation of teaching. The paper also introduces a new evaluation scoring method: the University of Zambia Staff Appraisal System (UNZASAS) method.
Method: Anonymous 5-point Likert scale evaluation rating forms were administered to 134 third-year medical students in two consecutive years to measure students’ perceptions of teaching quality of four faculty members in an academic department at
School of Medicine. The rating forms were scored using the UNZASAS method.
Results: The response rate averaged 83%. The group average lecturer rating improved from 120 to 141.5. Individual performance of three lecturers improved while that of one declined. The UNZASAS method was effective in summarizing data to identify the areas of weakness and strength in the faculty members. The specificity and sensitivity of this
method were fundamental to its success as a diagnostic tool for formative evaluation of teaching quality.
Conclusions & Implications: The quality of teaching in the academic department improved after evaluation of teaching was introduced. The UNZASAS method proved to be an effective tool
for scoring evaluation data and for providing faculty with useful and specific formative feedback. Health professionals training institutions can consider using the UNZASAS method for their evaluation of teaching contribution by educators
The Post Occupancy Evaluation (POE) as A Method in Case Study Research: Analysing the Accessibility of Library Design
Case Study research often uses different methods to analyse the rich data that is collected. This paper presents a new method for Case Study research, the Post Occupancy Evaluation (POE). This is a method that is often used an auditing tool for design but has the potential to be employed in different ways when coupled with Case Study research. This presentation will discuss the historical use of the Post Occupancy Evaluation (POE) and how it can be adapted for use in qualitative research more generally.
Furthermore, an example of how the Post Occupancy Evaluation (POE) can be implemented in case study research will be discussed through a study at the library of the Petra Christian University, Indonesia that was conducted in 2017. This case study was to an analyse the accessibility of the library for physical
access but also access to education. This case study involved the collection of a rich data set through interviews, focus groups, photos, and walk-through audits with key stakeholders, management and people with disabilities. Through the use of the Post Occupancy Evaluation (POE) method it provided a framework for understanding how all of the different data sources could be collected together and organized. This presentation will discuss the use of the Post Occupancy Evaluation (POE) method in new and innovative ways and evidence its potential to not only provide a framework to collect data, but also to organize and analyse the data to inform case study research practices
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