| 1. |
|
|
| 2. |
- Liu, Yuanhua, 1971, et al.
(författare)
-
Considering the importance of user profiles in interface design
- 2009
-
Ingår i: User Interfaces. ; , s. 23-
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- User profile is a popular term widely employed during product design processes by industrial companies. Such a profile is normally intended to represent real users of a product. The ultimate purpose of a user profile is actually to help designers to recognize or learn about the real user by presenting them with a description of a real user’s attributes, for instance; the user’s gender, age, educational level, attitude, technical needs and skill level. The aim of this chapter is to provide information on the current knowledge and research about user profile issues, as well as to emphasize the importance of considering these issues in interface design. In this chapter, we mainly focus on how users’ difference in expertise affects their performance or activity in various interaction contexts. Considering the complex interaction situations in practice, novice and expert users’ interactions with medical user interfaces of different technical complexity will be analyzed as examples: one focuses on novice and expert users’ difference when interacting with simple medical interfaces, and the other focuses on differences when interacting with complex medical interfaces. Four issues will be analyzed and discussed: (1) how novice and expert users differ in terms of performance during the interaction; (2) how novice and expert users differ in the perspective of cognitive mental models during the interaction; (3) how novice and expert users should be defined in practice; and (4) what are the main differences between novice and expert users’ implications for interface design. Besides describing the effect of users’ expertise difference during the interface design process, we will also pinpoint some potential problems for the research on interface design, as well as some future challenges that academic researchers and industrial engineers should face in practice.
|
|
| 3. |
- Sandström, Olof, et al.
(författare)
-
Miljöpåverkan av skogsindustriutsläpp
- 1997
-
Ingår i: Naturvårdsverkets rapportserie. Rapport 4695. ; , s. 1-89
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 4. |
- Laksman, Efraim, 1983, et al.
(författare)
-
The stochastic opportunistic replacement problem, part III: improved bounding procedures
- 2020
-
Ingår i: Annals of Operations Research. - : Springer Science and Business Media LLC. - 1572-9338 .- 0254-5330. ; 292:2, s. 711-733
-
Tidskriftsartikel (refereegranskat)abstract
- We consider the problem to find a schedule for component replacement in a multi-component system, whose components possess stochastic lives and economic dependencies, such that the expected costs for maintenance during a pre-defined time period are minimized. The problem was considered in Patriksson et al. (Ann Oper Res 224:51–75, 2015), in which a two-stage approximation of the problem was optimized through decomposition (denoted the optimization policy). The current paper improves the effectiveness of the decomposition approach by establishing a tighter bound on the value of the recourse function (i.e., the second stage in the approximation). A general lower bound on the expected maintenance cost is also established. Numerical experiments with 100 simulation scenarios for each of four test instances show that the tighter bound yields a decomposition generating fewer optimality cuts. They also illustrate the quality of the lower bound. Contrary to results presented earlier, an age-based policy performs on par with the optimization policy, although most simple policies perform worse than the optimization policy.
|
|
| 5. |
- Bergström, Gustav, et al.
(författare)
-
Evaluating the layout quality of UML class diagrams using machine learning
- 2022
-
Ingår i: Journal of Systems and Software. - : Elsevier BV. - 0164-1212. ; 192
-
Tidskriftsartikel (refereegranskat)abstract
- UML is the de facto standard notation for graphically representing software. UML diagrams are used in the analysis, construction, and maintenance of software systems. Mostly, UML diagrams capture an abstract view of a (piece of a) software system. A key purpose of UML diagrams is to share knowledge about the system among developers. The quality of the layout of UML diagrams plays a crucial role in their comprehension. In this paper, we present an automated method for evaluating the layout quality of UML class diagrams. We use machine learning based on features extracted from the class diagram images using image processing. Such an automated evaluator has several uses: (1) From an industrial perspective, this tool could be used for automated quality assurance for class diagrams (e.g., as part of a quality monitor integrated into a DevOps toolchain). For example, automated feedback can be generated once a UML diagram is checked in the project repository. (2) In an educational setting, the evaluator can grade the layout aspect of student assignments in courses on software modeling, analysis, and design. (3) In the field of algorithm design for graph layouts, our evaluator can assess the layouts generated by such algorithms. In this way, this evaluator opens up the road for using machine learning to learn good layouting algorithms. Approach.: We use machine learning techniques to build (linear) regression models based on features extracted from the class diagram images using image processing. As ground truth, we use a dataset of 600+ UML Class Diagrams for which experts manually label the quality of the layout. Contributions.: This paper makes the following contributions: (1) We show the feasibility of the automatic evaluation of the layout quality of UML class diagrams. (2) We analyze which features of UML class diagrams are most strongly related to the quality of their layout. (3) We evaluate the performance of our layout evaluator. (4) We offer a dataset of labeled UML class diagrams. In this dataset, we supply for every diagram the following information: (a) a manually established ground truth of the quality of the layout, (b) an automatically established value for the layout-quality of the diagram (produced by our classifier), and (c) the values of key features of the layout of the diagram (obtained by image processing). This dataset can be used for replication of our study and others to build on and improve on this work. Editor's note: Open Science material was validated by the Journal of Systems and Software Open Science Board.
|
|
| 6. |
- Gustavsson, Per M., 1965-, et al.
(författare)
-
Machine Interpretable Representation of Commander's Intent
- 2008
-
Ingår i: Proceedings of the 13th International Command and Control Research and Technology Symposium (13th ICCRTS).
-
Konferensbidrag (refereegranskat)abstract
- The Network-Centric approach envisioned in the Global Information Grid enables the interconnection of systems in a dynamic and flexible architecture to support multi-lateral, civilian and military missions. Constantly changing environments require commanders to plan for missions that allow organizations from various nations and agencies to join or separate from the teams performing the missions, depending on the situation, as missions unfold. The uncertainty within an actual mission, and the variety of potential organizations that support the mission after it is underway, makes Command Intent (CI) a critical concept for the mission team. With new and innovative information technologies, CI can now be made available to the team of organizations in a coalition environment. Using a flexible and linguistically based approach for representing CI allows Intent to be interpreted and processed by all participants – both humans and machines. CI representations need to be able to express mission team’s purpose, the anticipated End-State of the mission and desired key tasks. In this work, the expression of CI is developed to enable the structure and dynamics of collaboration support.
|
|
| 7. |
- Mårdberg, Peter, 1980, et al.
(författare)
-
Using a Formal High-level Language to Instruct Manikins to Assemble Cables
- 2014
-
Ingår i: Procedia CIRP. - : Elsevier BV. - 2212-8271. ; 23:C, s. 29-34
-
Konferensbidrag (refereegranskat)abstract
- In this paper, a formal high-level language is used to generate simulations where a manikin assembles flexible cables. The language generates assembly instructions for the manikin, which automatically performs the corresponding assembly motion with as good ergonomic as possible. Due to weight, stiffness and narrow regions, it may be difficult to perform an assembly of the cable. Our approach allows us to verify that it may be performed in an ergonomically sound way. The generated instructions are formally verified to ensure that assembly order is held and to prevent erroneous assembly states. The simulations have been made on industrial test cases.
|
|
| 8. |
- Spensieri, Domenico, 1978, et al.
(författare)
-
Optimal Robot Placement for Tasks Execution
- 2016
-
Ingår i: Procedia CIRP - 6th CIRP Conference on Assembly Technologies and Systems, CATS 2016, Gothenburg, Sweden, 16-18 May 2016. - : Elsevier BV. - 2212-8271. ; 44, s. 395-400
-
Konferensbidrag (refereegranskat)abstract
- Automotive assembly cells are cluttered environments, including robots, workpieces, and fixtures. Due to high volumes and several product variants assembled in the same cell, robot placement is crucial to increase flexibility and throughput. In this paper, we propose a novel method to optimize the base position of an industrial robot with the objective to reach all predefined tasks and minimize cycle time: robot inverse kinematics and collision avoidance are integrated together with a derivative-free optimization algorithm. This approach is successfully used to find feasible solutions on industrial test cases, showing up to 20% cycle time improvement.
|
|
| 9. |
- Elg, Mattias, 1968-, et al.
(författare)
-
The Future of Work for Quality Management – Challenges in the Digitalized Era
- 2018
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Purpose Digitalization provides both challenges and opportunities for Quality Management (QM). The purpose of this paper is to identify challenges induced by digitalization on current QM practices, in order to uncover the potential of how QM may support digitalization in organizations. This issue is addressed through an analytical framework that stresses two dimensions: first exploration and exploitation of digitalized QM processes and second value creation, which is performed by the customer or in interaction facilitated by the provider. Design/methodology/approach This paper is based on a cross-case study design with interview data collected from 33 quality management professionals in four large Swedish organizations. Findings Six different challenges and corresponding roles are proposed for QM: The gardener involved in the design of the many different currently utilized technologies; the bridge-builder - a role that connects implemented digitalized solutions that enable the movement from human-to-human to a human-to-digital interface; the assistant a contributor to better value in the customer sphere for already implemented digitalized solutions; the architect including planning, designs, and reviews together with many different stakeholders; the connector focusing on the continuous management of value-in-use and open up for opportunities for continuous interaction and value-adding; and explorer drawing attention towards the challenges of the existing power structures. Originality/value This paper contributes with empirical evidence on challenges induced by digitalization, an area often discussed but not as often studied empirically. Further, the study identifies challenges of digitalization affecting both exploitative and explorative practices throughout an organisations value-creation process.
|
|
| 10. |
- Paik, Jeom Kee, et al.
(författare)
-
Full-scale collapse testing of a steel stiffened plate structure under axial-compressive loading at a temperature of −80°C
- 2021
-
Ingår i: Ships and Offshore Structures. - : Informa UK Limited. - 1754-212X .- 1744-5302. ; 16:3, s. 255-270
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of the paper was to develop a test database of the ultimate strength characteristics of full-scale steel stiffened plate structures under axial compressive loading at a temperature of −80°C. This paper is a sequel to the authors’ articles (Paik et al. 2020a, https://doi.org/10.1016/j.istruc.2020.05.026 and Paik et al. 2020b, https://doi.org/10.1080/17445302.2020.1787930). In contrast to the earlier articles associated with room temperature or cryogenic condition, this paper investigated the effect of a low temperature at −80°C which is within the boundary range of temperature of the ductile-to-brittle fracture transition for carbon steels. A material model representing the test conditions was also proposed to capture the characteristics of carbon steels at low temperatures both in tension and in compression, and it was used in finite element method simulations of the full-scale experiment. A comparison between numerical analyses and experiments showed that the proposed model could successfully predict the failure modes and ultimate strength characteristics at low temperatures for stiffened plate structures under axial compressive loading conditions.
|
|
