24 research outputs found
Rez@Kultur. Digitalisierung von Rezensionsprozessen in Literatur und Bildender Kunst als Bestandteil Kultureller Bildungsprozesse
No full textGraf G, Reinwand-Weiss V-I, Knackstedt R, et al. Rez@Kultur. Digitalisierung von Rezensionsprozessen in Literatur und Bildender Kunst als Bestandteil Kultureller Bildungsprozesse. In: Jörissen B, Kröner S, Unterberg L, eds. Forschung zur Digitalisierung in der Kulturellen Bildung. Kulturelle Bildung und Digitalität. Vol 1. München: kopaed; 2019: 185-199
A Case Study on Part Engineering Change Management from a Development and Production Perspective at a Major Automotive OEM
No full textDue to interest in aspects such as process, strategies, tools of engineering changes expressed in a literature review, two case studies were done on a major automotive OEM to assess the perceived quality of its engineering change management system and process through its employees\u27 eyes. A combination of interviews and written surveys was used to capture the views of participants from all major functions found at the research and development (R&D) headquarters of the OEM: Purchasing, Production, Development, and one group consisting of all other functions ( Other ). This research filled a gap that was found in the literature review: No work was found that took into consideration the engineering change process and tool weaknesses as expressed by the associates who use them. Twelve associates were interviewed. The findings were used as a basis for a survey given to 46 associates. Differences in engineering change sources between this OEM and other manufacturers across a breadth of industries were identified. Improvement opportunities were found in the following areas: process flow related to timing, system integration with other systems in use at OEM, system interface/usability, and overall quality of information input into system. Additional interviews were conducted at a manufacturing facility of the same OEM: differences regarding timing and process between temporary and permanent engineering changes were discovered through five interviews
Part Change Management: A Case Study on Automotive OEM Development and Production Perspectives
No full textDue to interest in aspects such as process, strategies, and tools of engineering changes expressed in a literature review, a case study was done on a major automotive OEM to assess the perceived quality of its part engineering change management process and supporting system through its employees’ eyes. A combination of 12 interviews lasting 12 hours and 46 written surveys was used to capture the views of participants from all major functions found at the research and development (R&D) headquarters of the OEM: Purchasing, Production, Development, and one group consisting of all other functions (“Other”). Statistical analysis was performed to identify statistically significant differences between employee perceptions of an engineering change management system among different departments, amount of use, and years of use. It was found that statistically significant differences exist in terms of understanding the usability of the system between different departments and also between different years of experience.</jats:p
A Knowledge Based FMEA to Support Identification and Management of Vehicle Flexible Component Issues
No full textAbstractThe objective of this research is to develop a knowledge-based approach of performing Failure Modes and Effects Analysis (FMEA) on flexible vehicle components. A three-step knowledge discovery and data mining process is used to develop a set of rules. This set provides decision support to engineers while they perform FMEA on flexible vehicle components. The first step is where traditional FMEAs are performed on flexible components. In the second step, a decision tree algorithm (J48) is used to extract rules from the collected data. The third step involves manual post-processing of the rules extracted by the decision tree algorithm. Finally, the set of rules is implemented in a knowledge-based FMEA tool that can be used to provide decision support to engineers while they perform FMEAs on flexible components. The tool is used to identify and review quality issues within a complete vehicle. The top ten issues identified from the FMEA are submitted to design and manufacturing engineers for detailed evaluations
Konfigurative Referenzmodellierung mit dem H2-Toolset
No full textDie am Lehrstuhl für Wirtschaftsinformatik und Informationsmanagement der Westfälischen Wilhelms-Universität Münster entwickelte Software H2 ist ein Meta-Modellierungswerkzeug, mit dem sich hierarchisch strukturierte Modellierungssprachen definieren und diesen Sprachdefinitionen entsprechende Modelle konstruieren lassen.11 Das Ziel des Projektseminars COIN (COnfigurative INformation Modeling) bestand darin, das H2-Toolset um Methoden der konfigurativen Referenzmodellierung zu erweitern. An der Realisation dieses Projekts waren neun studentische Teilnehmer sowie drei Betreuer im Zeitraum von Oktober 2005 bis Mai 2006 beteiligt. Diese Arbeit dokumentiert die durchgeführten Arbeitsschritte
Control of an 8L45 transmission inside the Colorado State University EcoCAR 3 2016 Chevrolet Camaro
No full text2021 Fall.Includes bibliographical references.The hybridization and electrification of vehicles brings new challenges to the engineering and development of automotive control systems. Parallel, single motor pre-transmission hybrid electric vehicles are a preferred design for hybrid vehicles because of the mechanical simplicity, in that the electric motor and engine are on a common axis, connected to the transmission. Mechanically, this configuration enables the electric motor to take advantage of the torque multiplication of the final drive gear and transmission. From a controls perspective, this configuration is complicated because the engine, motor and transmission must work together to achieve the system-level objectives of fuel economy and driveability. These challenges are exemplified in the development of the hybrid 2016 Chevy Camaro developed by the Colorado State University (CSU) EcoCAR 3 team. The results of this thesis demonstrate model development, model validation, and controls development to control the operation of the electric motor and engine together for driveability and performance during transmission gear changes. A model was developed in MATLAB Simulink to predict the behavior and performance of the 8-speed automatic transmission 8L45 that is stock to the 2016 Chevrolet Camaro. The performance of this model was validated by comparison to on-track vehicle data with <0.3m/s average error in prediction of the vehicle speed trace. A control system was developed to enable control of electric motor torque during shifts which eliminates ignition timing-based torque requests while maintaining driveability-derived shift dynamics. This work has implications for the design of automatic transmission hybrid electric vehicles with discussion focusing on the potential for integration of learning technologies and minimization of gear lash
Configuration and options management processes and tools: an automotive OEM case study
No full text
Purpose
The purpose of this paper is to propose a three-staged approach to configuration change management that uses a combination of complexity analysis, data visualization, and algorithmic validation to assist in validating configuration changes.
Design/methodology/approach
In order to accomplish the above purpose, the authors conducted a review of existing configuration management practices. This was followed by an in-depth case study of the configuration management practices of a major automotive OEM. The primary means of data collection for the case study were interviews, ethnographic study, and document analysis. Based on the results of the case study, a set of support tools is proposed to assist in the configuration management process.
Findings
Through the case study, the authors identified that the OEM used a configuration management method that largely represented the rule-based reasoning methods identified in the literature review. In addition, many of the associated challenges are present, primarily, the difficulty in making changes to the rule system and evaluating the changes.
Research limitations/implications
The primary limitation is that the case study was based on a single OEM. However, the results are in line with other practices identified in the literature review. Therefore, it is expected that the findings and recommendations should hold true in other applications.
Practical implications
A set of configuration management tools and associated requirements are identified and defined that could be used to assist companies in the automotive industry, and perhaps others, in managing their option changes as they continue to move towards full mass customization of products.
Originality/value
The proposed approach for configuration management has not been seen in any other organization. The value of this paper is in the effectiveness of the proposed approach in assisting in the configuration change management process.
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Electromagnetic interference with implantable cardioverter-defibrillators at power frequency : an in vivo study
No full textThe number of implantable cardioverter-defibrillators (ICDs) for the prevention of sudden cardiac death is continuing to increase. Given the technological complexity of ICDs, it is of critical importance to identify and control possible harmful electromagnetic interferences between various sources of electromagnetic fields and ICDs in daily life and occupational environments.Interference thresholds of 110 ICD patients (1-, 2-, and 3-chamber ICDs) were evaluated in a specifically developed test site. Patients were exposed to single and combined electric and magnetic 50-Hz fields with strengths of up to 30 kV?m? and 2.55 mT. Tests were conducted considering worst-case conditions, including maximum sensitivity of the device or full inspiration. With devices being programmed to nominal sensitivity, ICDs remained unaffected in 91 patients (83%). Five of 110 devices (5%) showed transient loss of accurate right ventricular sensing, whereas 14 of 31 (45%) of the 2- and 3-chamber devices displayed impaired right atrial sensing. No interference was detected in 71 patients (65%) within the tested limits with programming to maximum sensitivity, whereas 20 of 110 subjects (18%) exhibited right ventricular disturbances and 19 of 31 (61%) subjects exhibited right atrial disturbances.Extremely low-frequency daily-life electromagnetic fields do not disturb sensing capabilities of ICDs. However, strong 50-Hz electromagnetic fields, present in certain occupational environments, may cause inappropriate sensing, potentially leading to false detection of atrial/ventricular arrhythmic events. When the right atrial/right ventricular interferences are compared, the atrial lead is more susceptible to electromagnetic fields.http://clinicaltrials.gov/ct2/show/NCT01626261. Unique identifier: NCT01626261
