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Sangwin C.J.,University of Edinburgh | Kocher N.,Baden Wuerttemberg Cooperative State University
Computers and Education | Year: 2016

Assessment is a key component of all educational systems, and automatic online assessment is becoming increasingly common for formative work in mathematics. This paper reports an investigation of the extent to which contemporary automatic assessment software can automatically mark answers to questions from existing high-stakes mathematics examinations. The questions are taken from a corpus of publicly available core mathematics questions designed for high-achieving students aged approximately eighteen at the school-university interface. We focus on the extent to which objective properties of each final answer may be automatically established and the extent to which automatic marking reasoning by equivalence supports assessment of students' methodology. Our results show that transcribing existing paper-based mathematics examinations into an electronic format is now feasible for a significant proportion of the questions as currently assessed. The most significant barrier to using contemporary automatic assessment is the requirement from examiners that students provide evidence that they have used an appropriate method. © 2015 Elsevier Ltd. All rights reserved. Source

Mueller S.,University of Leipzig | Winkelmann C.,Baden Wuerttemberg Cooperative State University | Krause F.,University of Leipzig | Grunwald M.,University of Leipzig
Experimental Brain Research | Year: 2014

Extensive use of sensorimotor properties has been shown to lead to use-dependent plasticity in the human motor cortex as well as sensory areas. The sensory consequences of these cortical changes, however, remain widely unclear. We were interested whether job-related long-term haptic training is measurable in terms of changes in haptic perception (active touch exploration) in manual physiotherapists (PT). To that end, the haptic thresholds of PT (students and employed) and registered osteopathic manual therapists (OMT; PT with postgraduate specialization) were measured and compared to age- and sex-matched control groups. Additionally, tactile acuity (passive static touch) was assessed using grating domes. PT and OMT had superior mean haptic thresholds compared to the control group, suggesting an increase in sensitivity through use. An age-related decline in haptic perception capacity occurred only in the control group, suggesting that the job-related training of the manual therapist groups may have slowed their age-related decline. Contrary to our expectation, we found significantly poorer mean haptic threshold results in the PT student group than for the controls. No significant differences or changes in tactile acuity were found for any of the groups (students and professional). The present results demonstrate use-dependent plasticity in manual therapists. Furthermore, the results underline the known effect of a superior discrimination ability of haptic as opposed to tactile perception. © 2014 Springer-Verlag. Source

Voss M.,University of Mannheim | Sauer T.,Baden Wuerttemberg Cooperative State University | Bozkurt H.,University of Mannheim
Proceedings of the 16th International Conference on Engineering and Product Design Education: Design Education and Human Technology Relations, E and PDE 2014 | Year: 2014

This paper presents a study that examines how well-known methods for idea generation can be advantageously combined. It investigates Method 6-3-5, a group technique for six developers who successively refine three initial ideas under tight time constraints (within five minutes per round). In the conducted experiments, this commonly used brainwriting technique was complemented with a set of design heuristics that should help the participants to abstract the problem and should guide them to potential solutions. The study (with N = 88 participants in total) compares first and third year B.Eng. students in a Mechanical Engineering programme with young professionals holding more than one year working experience. For evaluating the solutions that the participants generated, metrics were employed that measured the variety and the quantity of the ideas. The paper also analyses if more experience permits engineers to overcome the 'fixation' to an initial design. Source

Schalles C.,Baden Wuerttemberg Cooperative State University | Creagh J.,Cork Institute of Technology | Rebstock M.,FH Darmstadt
International Journal of Software Engineering and Knowledge Engineering | Year: 2014

Today, developing the conceptual design of information systems has become inconceivable without the support of graphical models. Models are developed using graph-based modeling languages such as UML. This study focuses on the impact of metamodel properties on different usability attributes in the domain of graphical modeling languages. The study is based on a model of hypotheses including a structural causal model developed under consideration of cognitive theories and usability theory. Survey data is collected and the causal hypotheses are assessed using a structure equation modeling approach. The study shows important findings for practical and theoretical issues of how differing modeling languages are inuencing usability attributes on causal stages in the modeling domain. The main focus of this article is to define differences and similarities of how language metaproperties impact usability attributes in model interpretation scenarios. Source

Lill D.,Baden Wuerttemberg Cooperative State University Loerrach | Gutjahr A.,Baden Wuerttemberg Cooperative State University Loerrach | Schappacher M.,Baden Wuerttemberg Cooperative State University Loerrach | Sikora A.,Baden Wuerttemberg Cooperative State University
Proceedings - 5th International Conference on Systems and Networks Communications, ICSNC 2010 | Year: 2010

Based on the experience from two predecessor projects, a novel architecture for the detection of vulnerable road users (VRU) is developed. It combines communication and localization, following the function principle of a secondary surveillance radar. Challenges are in the accuracy, the scalability, the bandwidth availability and the limited cost and complexity of the devices. This paper describes the objective of the overall project, the architectural approach of the wireless protocol and the design flow, which has been chosen for the development and is still in progress. © 2010 IEEE. Source

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