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1 – 10 of over 1000Jana Groß Ophoff and Colin Cramer
The German evidence-based model of educational governance is bureaucratically regulated, but teachers and schools are autonomous in their way of implementing requirements in…
Abstract
The German evidence-based model of educational governance is bureaucratically regulated, but teachers and schools are autonomous in their way of implementing requirements in schools. Accountability is ensured by regularly monitoring educational outcomes with reference to national educational standards, e.g. in the form of mandatory comparative performance tests. In this context, it is worth determining the process stages of research engagement with which the available data or evidence is associated and which purposes they can serve in teacher education and practice. Building on that, an overview is provided of the state of (mainly German) research on teachers' and school leaders' research engagement and influencing factors. This research field has flourished in the wake of the Empirical Shift in German education. By now the understanding has emerged that ultimately the depth of inferential processes is vital for sustainable development and this in turn is influenced by data, context and user characteristics. On the individual level, in particular, positive affective-motivational dispositions and research literacy are deemed important, whereas the feeling of being controlled has detrimental effects. On the school level, school culture and leadership are of impact, whereas a certain continuity of measures on the governance level proves meaningful for the engagement with data and evidence in educational practice. With regard to the German experience, it is concluded that more (funded) dialogue opportunities between different actors and professional groups in education are needed and that initial and further training should strive even more to impart a meta-reflective stance or enquiry habit of mind.
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H.J. Warnecke, B. Graf and I. Schmidt
The use of standard modules is often suggested as one means of increasing the flexibility and lowering the cost of programmable handling systems. However at present there is a…
Abstract
The use of standard modules is often suggested as one means of increasing the flexibility and lowering the cost of programmable handling systems. However at present there is a lack of modules available to the industrial user. In an attempt to overcome this lack IPA — Stuttgart have developed two new modular systems.
Andrea Graf and Marion Mertesacker
The purpose of this paper is to develop recommendations for measures assessing intercultural training needs for international human resource management. Based on scientific as…
Abstract
Purpose
The purpose of this paper is to develop recommendations for measures assessing intercultural training needs for international human resource management. Based on scientific as well as application‐oriented criteria the aim is to select six measures assessing general intercultural competencies and with the help of behaviour ratings in interactive intercultural exercises to evaluate the psychometric quality and practicability of the questionnaires for training purposes.
Design/methodology/approach
Psychometric quality including prognostic power of ICSI, FLCS, NVCCS, ISAS, TIHK, and SIB was tested by correlating subjects' questionnaires results with observations of their actual behaviour in intercultural exercises.
Findings
Satisfying psychometric quality and prognostic validity of almost all measures was found. Especially TIHK, ICSI, and FLCS score well for assessing training needs whereas the results for SIB were problematic.
Research limitations/implications
The study observed student participants of the same culture. Replication studies should examine large samples of different cultural backgrounds and manager populations.
Practical implications
Human resource managers may benefit from gaining knowledge about which measures to use for identifying employee's weaknesses in intercultural competence in order to create tailor‐made training interventions.
Originality/value
The study is the first providing information about the psychometric quality, including predictive power, of six measures, that assess intercultural skills to detect intercultural training needs.
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Keval P. Prajadhiana, Yupiter H.P. Manurung, Alexander Bauer, Mohd Shahriman Adenan, Nur Izan Syahriah, Mohamed Ackiel Mohamed, Birgit Awiszus, Marcel Graf and Andre Haelsig
This paper aims to numerical and experimental analysis on substrate deformation and plastic strain induced by wire arc additive manufacturing.
Abstract
Purpose
This paper aims to numerical and experimental analysis on substrate deformation and plastic strain induced by wire arc additive manufacturing.
Design/methodology/approach
The component has the form of a hollow, rectangular thin wall consisting of 25 deposition layers of SS316L on an SS304 substrate plate. Thermo-mechanical finite element analysis was applied with Goldak’s double-ellipsoidal heat-source model and a non-linear isotropic hardening rule based on von Mises’ yield criterion. The layer deposition was modelled using simplified geometry to minimize overall pre-processing work and computational time.
Findings
A new material modelling of SS316L was obtained from the chemical composition of the evolved component characterized by scanning electron microscope/energy dispersive X-ray and further generated by an advanced material-modelling software JMatPro. In defining heat-transfer coefficients, transient thermometric analysis was first performed in the bead and on the substrate, which was followed by an adjustment of the heat-transfer coefficients to reflect the actual temperature distribution. Based on the adjusted model and boundary conditions, sensitivity analysis was conducted prior to the ultimate simulation of substrate deformation and equivalent plastic strain. Furthermore, this simulation was verified by conducting a series of automated wire + arc additive manufacturing tests using robotic gas Metal arc welding with distortion measured by coordinate-measurement machine and equivalent plastic strain measured by optical three-dimensional-metrology measurements (Gesellschaft für Optische Messtechnik).
Originality/value
It can be concluded that a proper numerical computation using the adjusted model and property-evolved material exhibits a similar trend with acceptable agreement compared to the experiment by yielding an error percentage up to 30% for deformation and up to 21% for equivalent plastic strain at each individual measurement point.
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Fernando Peña, José Carlos Rico, Pablo Zapico, Gonzalo Valiño and Sabino Mateos
The purpose of this paper is to provide a new procedure for in-plane compensation of geometric errors that often appear in the layers deposited by an additive manufacturing (AM…
Abstract
Purpose
The purpose of this paper is to provide a new procedure for in-plane compensation of geometric errors that often appear in the layers deposited by an additive manufacturing (AM) process when building a part, regardless of the complexity of the layer geometry.
Design/methodology/approach
The procedure is based on comparing the real layer contours to the nominal ones extracted from the STL model of the part. Considering alignment and form deviations, the compensation algorithm generates new compensated contours that match the nominal ones as closely as possible. To assess the compensation effectiveness, two case studies were analysed. In the first case, the parts were not manufactured, but the distortions were simulated using a predictive model. In the second example, the test part was actually manufactured, and the distortions were measured on a coordinate measuring machine.
Findings
The geometric deviations detected in both case studies, as evaluated by various quality indicators, reduced significantly after applying the compensation procedure, meaning that the compensated and nominal contours were better matched both in shape and size.
Research limitations/implications
Although large contours showed deviations close to zero, dimensional overcompensation was observed when applied to small contours. The compensation procedure could be enhanced if the applied compensation factor took into account the contour size of the analysed layer and other geometric parameters that could have an influence.
Originality/value
The presented method of compensation is applicable to layers of any shape obtained in any AM process.
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Rolf Dieter Schraft, Birgit Graf, Andreas Traub and Dirk John
Based on the successful hardware and software architecture of Care‐O‐bot™, a new generation of mobile robots has recently been designed at Fraunhofer Institute of Manufacturing…
Abstract
Based on the successful hardware and software architecture of Care‐O‐bot™, a new generation of mobile robots has recently been designed at Fraunhofer Institute of Manufacturing Engineering and Automation (IPA). The robots have been created to communicate with and to entertain visitors in a museum. Their tasks include welcoming visitors, leading a guided tour through the museum or playing with a ball. In this article the hardware platform of the robots and their features such as navigation and communication skills, their safety concept and handling are outlined. Further, the underlying control software of the robots is described. Finally, the application of the robots at the Museum für Kommunikation in Berlin is presented. The robots have been running in this museum daily since 25 March 2000 without noteworthy problems.
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Sam R. Thangiah, Michael Karavias, Ryan Caldwell, Matthew Wherry, Jessica Seibert, Abdullah Wahbeh, Zachariah Miller and Alexander Gessinger
Purpose: This chapter describes the design and implementation, at the computer hardware and software level, of the Greggg robot. Greggg is a scalable high performance, low cost…
Abstract
Purpose: This chapter describes the design and implementation, at the computer hardware and software level, of the Greggg robot. Greggg is a scalable high performance, low cost hospitality robot constructed from off-the-shelf parts. Greggg has a robust architecture and acts as a tour guide on-campus, both indoors or outdoors. This research allows one to build a customized robot at a low cost, under U.S. $2,000, for accomplishing the desired hospitality tasks, and scale, and expand the capability of the robot as required.
Practical Implications: The practical implication of the research is the capability to build and program a robot for hospitality tasks. Greggg is a customizable robot capable of giving on-campus tours both indoors and outdoors. In its current architecture, Greggg can be trained to be a museum docent and give directions to visitors on-campus or at an airport and scaled up for other hospitality tasks using off-the-shelf components. Enhancing the robot by scaling it up and expanding it, in addition to testing it with a range of increasingly more difficult tasks using machine learning algorithms, is highly beneficial to advancing research on the use of robots in the hospitality sector. Greggg can also be used for Robot-as-a-service (Rass) applications.
Societal Implications: The economic implication of Greggg is the ease and low cost with which one, with minimal technology know-how, can construct an autonomous hospitality industry robot. This chapter details the hardware and software needed to build a low cost scalable and customizable autonomous robot for the hospitality industry without having to pay an exorbitant price.
Research/Limitations/Implications: This research allows one to build their own customized hospitality robot under U.S. $2,000. Given the cost of building the robot, it has limitations on the hospitality tasks it can perform. It can navigate on flat surfaces, has limited vision and speech processing capabilities and has a battery life not exceeding an hour. Furthermore, it does not have any robotic manipulators or tactile processing capabilities.
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Lu Lu, Gary Gregory and Shawn Thelen
This research extends existing services offshoring literature by investigating how the type of information exchanged, technical support or personal billing, in conjunction with…
Abstract
Purpose
This research extends existing services offshoring literature by investigating how the type of information exchanged, technical support or personal billing, in conjunction with country-of-service-origin (COSO) influences consumer likelihood to react negatively (boycott issue importance, NWOM, perceived service quality) to an offshore service exchange.
Design/methodology/approach
Structural equations modelling is employed to assess relationships among constructs when country of service origin (New Zealand and the Philippines) and type of service provided (technical support and personal billing services) are varied. Using a scenario-based experimental design we collected 337 responses from a consumer panel across Australia.
Findings
Results indicate that both COSO and type of information exchanged affect service sentiment. Overall, consumers feel more negative and more likely to punish a company for offshoring to culturally dissimilar countries such as the Philippines than to culturally similar ones such as New Zealand. However, consumers were more concerned with personal billing services provided from offshore providers than technical support, regardless of COSO.
Practical implications
Practitioners need to understand customer sentiment about services offshoring in general as well as the relationship between service type and country of service origin when designing the global service supply chain.
Originality/value
This study extends theory by applying a multi-dimensional portfolio perspective in examining customer sentiment of offshore services. Understanding the underlying bases of customer concerns and how companies can mitigate negative perceptions allows firms to better manage service offshore strategy.
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Hannah R. Marston, Linda Shore, Laura Stoops and Robbie S. Turner