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- 2023-09-26Tabular Data
Requirement Analysis for Developing a web app capturing and utilizing design heuristics in the product development process based on interview questions from 30 industry experts and teaching personnel in engineering education and literature research
As part of the DFG project "Design Heuristics for Goal-Directed Product Development", numerous interviews were conducted with product developers and teaching staff from universities. In addition, a literature analysis was conducted. The goal was to find out how design heuristics are currently used, how an IT application must be structured in order to use them, and how design heuristics must be formulated so that they can be best absorbed and used. The results are summarized in the following document. - 2023-09-26Tabular Data
Design Heuristics for Sustainable Product Development
As part of the DFG project "Design Heuristics for Targeted Product Development", a database was developed that contains design heuristics for sustainable product development. For this purpose, already explicated guidelines were taken from publications and transferred into the description standard for design heuristics developed within the project. The table contains all transferred design heuristics. The table contains more than 400 design heuristics for sustainable product development. - 2023-09-26Tabular Data
Interview answers of students using a web application for design heuristics to develop sustainable products
As part of the DFG project "Design Heuristics for Targeted Product Development", a web app was developed with the help of which design heuristics were to be recorded and used. To test the usefulness of the app, students were surveyed at the beginning and end of the semester regarding their level of knowledge in the field of sustainable product development and the use of the web app. The answers of the survey at the end of the semester can be found in this table. - 2023-09-26Tabular Data
Interview answers of students using a web application for design heuristics to develop sustainable products - 2
As part of the DFG project "Design Heuristics for Targeted Product Development", a web app was developed with the help of which design heuristics were to be recorded and used. To test the usefulness of the app, students were surveyed at the beginning and end of the semester regarding their level of knowledge in the field of sustainable product development and the use of the web app. The answers of the survey at the beginning of the semester can be found in this table. - 2023-09-26Textual Data
Interviews with students regarding the use of knowledge in the product development process
As part of the DFG project "Design Heuristics for Targeted Product Development", a web app was developed with the help of which design heuristics were to be recorded and used. To test the usefulness of the app, students were surveyed at the beginning and end of the semester regarding their level of knowledge in the field of sustainable product development and the use of the web app. In the course of 14 semi-structured interviews, students were asked at the end of the project what types of knowledge were of particular importance to them and how they were able to identify knowledge that was relevant to them. In addition, students were asked how they could recognize that they could generate new knowledge themselves and at what points they felt ready to share new knowledge with others. - 2023-09-26Textual Data
Analysis of a craddle-to-craddle certified product regarding the usage of design heuristics for sustainable product development
In the DFG project "Design Heuristics for Goal-Directed Product Development", a product was analyzed to determine which heuristics were used for product development. The goal was to develop a coherent heuristic set that contains heuristics that can be used together. For the analysis, a knowledge graph of over 400 heuristics was formed. The product was then analyzed to determine which of the heuristics were used (heuristics marked in green), which were not used because they were irrelevant to the product case (marked in yellow), and which were not used even though they could have been (marked in red). The product analyzed was the craddle-to-craddle certified soundbar "Beosound Level" from Bang & Olufsen. - 2023-09-26Tabular Data
Survey Answers evaluating the usage of a web app that captures and utilizes design heuristics by 14 product developers from the automotive industry in china
As part of the DFG project "Design Heuristics for Targeted Product Development", a web app was developed with the help of which design heuristics were to be recorded and used. To test the usefulness of the app, an experiment was conducted. 14 product developers were divided into 3 groups. Two groups were to design products under given objectives. In addition, they were to capture their own heuristic knowledge. The third group was to evaluate the designs and the recorded knowledge. In the case of the designing and knowledge capturing groups, one group could use the developed app. The other group could use the knowledge management software of the company they worked for. For knowledge capture, the group could use common office applications (PowerPoint, Word) or pen and paper. - 2023Textual Data
State of Health Assessment of Spent Lithium-Ion Batteries Based on Voltage Integral During the Constant Current Charge
Lithium-ion battery (LIB) is used in many personal electronic devices (PED) and energy-demanding applications such as electric vehicles. After their first use, rather than dispose of them for recycling, some may have reasonable capacity and can be used in a secondary application. The current test methods to assess them are either slow, complex or expensive. The voltage integral during the constant current (CC) charge of the same model LIBs strongly correlates with the state of health (SOH) and is faster than a full capacity check. As against the filtering requirement in the incremental capacity (IC), Differential Voltage (DV) or the complex analysis in the electrochemical impedance spectrum(EIS), the voltage integral offers simple integration, just like the simple capacity Coulomb’s counter that is installed in many BMS for estimating the SOC of LIBs. By obtaining the voltage integral of a relatively new cell and an old cell of the same model with known SOH at a given ambient temperature and CC charge, the SOH of other similar cells can be easily estimated by finding their voltage integral. This research was funded by the German Academic Exchange Service (DAAD) and 335 Petroleum Technology Development Fund (PTDF) under the Nigerian-German Postgraduate Training Programme PhD, 2022, grant number 57610608. - 2023-09-08Textual Data
Dekarbonisierung des Verkehrssektors in Berlin: Bürger:innengutachten zu wissenschaftlich erstellten Szenarien
Diese Forschungsdaten wurden beim Workshop innerhalb des Projekts Bürgerschaftliche Resonanz auf nachhaltige Mobilitäts- und Infrastrukturszenarien für Berlin erhoben. Unterschiedlichen Maßnahmen für eine Dekarbonisierung des Berliner Verkehrssektors wurden in Workshops mit Bürger:innen aus Berlin und Brandenburg, die als Bürgergutachter:innen agieren, kontrovers und alternativ diskutiert und darüber abgestimmt. Dies bildet den Anhang des Preprints Dekarbonsierung des Verkehrssektors in Berlin: Bürger:innengutachten zu wissenschaftlich erstellten Szenarien. Der Preprint ist erreichbar unter DOI: https://doi.org/10.14279/depositonce-18736. - 2023-09-05Generic Research Data
Mosaik-2 Simulation Experiment
This data set was used to conduct a simulation experiment which tests the integration between MATSim and PALM. - 2023-08-14Generic Research Data
SimRa Rides Berlin 10/22 - 07/23
This is the dataset collected in the research project Simra (Safety in Bicycle Traffic, https://www.digital-future.berlin/en/research/projects/simra/) from October 2022 to July 2023 in the Berlin region. The dataset includes recorded bicycle rides (including GPS trace, accelerometer trace, and annotated near miss incidents) as well as user profiles (including basic demographic information and aggregated ride statistics). - 2023-08-22Generic Research Data
BIM semantic enrichment for the path planning of indoor wall-climbing robots
The availability of small-sized and compact wall-climbing robots is expected to facilitate inspection, maintenance, and domestic service tasks, especially in crowded indoor spaces where floor spaces are largely occupied. In contrast to the Unmanned Ground Vehicles (UGVs), the operation of wall-climbing robots would cost more power since it requires extra energy to overcome their gravity and adhere stably to inclined surfaces. Efficiently finding an optimal path between two different locations is crucial for the wall-climbing robot to improve energy efficiency and is the key to promoting the application of wall-climbing robots indoors. To navigate, the robot should construct or possess an appropriate representation of the surrounding environment. The simultaneous localization and mapping (SLAM) approach is a common way used by Unmanned Ground Vehicles (UGVs) to create a map of an unknown environment. To achieve this, the robot needs to be equipped with sensors (e.g.2D or 3D laser scanner) to scan its surroundings and an on-board processor to process the collected data in real-time. This process often requires a high onboard processing capacity and costs a lot of energy, which is challenging for indoor wall-climbing robots due to the limited payload capacity and battery power. Furthermore, traditional SLAM approaches only output geometric maps without semantic features, which might result in inaccurate or unreasonable path planning in practical applications. Most research on semantic mapping in the robotics field relies on RGB-D cameras equipped on the robot and computer vision algorithms for semantic detections. This, however, causes an increase on the computational cost. In the AEC industry, Building Information Modelling (BIM), supported by the international standard Industrial Foundation Class (IFC), is the most well-known approach to represent comprehensive geometric and semantic information of a building. The widespread adoption of BIM and the availability of increasingly reliable BIM models offer the wall-climbing robot new sources of information about their surroundings. Instead of solely relying on on-board sensors, making use of BIM data would considerably reduce the computational burden of the robot. Previous studies on BIM-based indoor path planning have proposed different indoor data models suitable for the path planning of different users including pedestrians, emergency responders and ground mobile robots. The users considered in these studies usually move in a horizontal direction. However, wall-climbing robots have different movement patterns and route preferences. The information included in existing data models cannot meet the requirement of wall-climbing robot path planning.Therefore, to facilitate BIM-based path planning of wall-climbing robots, a new indoor data model needs to be developed and the voxelization algorithm needs to be improved. - 2023Tabular Data
Potenziale für erneuerbare Wärme zur Fernwärmeversorgung
Die vorliegenden Informationen wurden im Rahmen der Dissertation "Untersuchung der zukünftigen Fernwärmeversorgung unter Unsicherheit bei Berücksichtigung technischer, ökonomischer und ökologischer Randbedingungen" von Merlin Sebastian Triebs zusammengetragen. Die Forschungsdaten umfassen eine Auflistung von Städten, Gemeinden und Regionen in Deutschland, in denen große Fernwärmesysteme (installierte thermische Nutzleistung größer als 50 MW) existieren. Darüber hinaus werden regionale Potenziale zur Bereitstellung sogenannter erneuerbarer Wärme gegeben. Diese beinhalten unter anderem Oberflächengewässer, hydrothermale Geothermie, das Abwassersystem, Frei- und Dachflächen und Informationen zu Müllverbrennungsanlagen und industrieller Abwärme. Für eine genaue Erläuterung sei auf Abschnitt 3.3 der Dissertation verwiesen. Für die zusammengetragenen Informationen wird keinerlei Haftung übernommen und die hier aufgeführten Werte ersetzen keine Machbarkeitsstudie. Auf Quellenangaben wird im Rahmen der einzelnen Potenziale weitestgehend verzichtet und stattdessen auf die jeweiligen Kapitel in der Dissertation verwiesen. - 2018Audio
Data for: Differentiable Particle Filters: End-to-End Learning with Algorithmic Priors
This folder contains the trajectory data for the publication: Jonschkowski, Rico, Divyam Rastogi, and Oliver Brock. "Differentiable particle filters: End-to-end learning with algorithmic priors." arXiv preprint arXiv:1805.11122 (2018). - 2023-08-18Tabular Data
"Rembrandt"-Gemälde im Getty Provenance Index® zwischen 1901 und 1918
Die Tabelle trägt Informationen zu Gemälden zusammen, die von Rembrandt selbst stammen sollten oder die mit ihm durch verschiedene Authentifizierungsabstufungen in Verbindung gebracht sowie im deutschsprachigen Auktionskatalogen zwischen 1901 und 1918 angeboten wurden. Quelle ist der Getty Provenance Index® (https://piprod.getty.edu/starweb/pi/servlet.starweb?path=pi/pi.web). Die Daten in der Tabelle sind Teil der Grundlage für die quantitative Auswertung der Masterarbeit "Rembrandt 'graphisch'. Eine quantitative Datenanalyse anhand digitalisierter deutschsprachiger Auktionskataloge zwischen 1901 und 1918". - 2023-08-18Tabular Data
"Rembrandt"-Gemälde in deutschsprachigen Auktionskatalogen zwischen 1901 und 1918
Die Tabelle trägt Informationen zu Gemälden zusammen, die von Rembrandt selbst stammen sollten oder die mit ihm durch verschiedene Authentifizierungsabstufungen in Verbindung gebracht sowie im deutschsprachigen Auktionskatalogen zwischen 1901 und 1918 angeboten wurden. Quellen sind die German Sales (https://www.arthistoricum.net/themen/portale/german-sales/auktionskataloge) und der Getty Provenance Index® (https://piprod.getty.edu/starweb/pi/servlet.starweb?path=pi/pi.web). Die Daten in der Tabelle sind die Grundlage für die quantitative Auswertung der Masterarbeit "Rembrandt 'graphisch'. Eine quantitative Datenanalyse anhand digitalisierter deutschsprachiger Auktionskataloge zwischen 1901 und 1918". - 2023-08-18Tabular Data
Doppelte "Rembrandt"-Gemälde in deutschsprachigen Auktionskatalogen zwischen 1901 und 1918
Die Tabelle trägt Informationen zu doppelt angebotenen Gemälden zusammen, die von Rembrandt selbst stammen sollten oder die mit ihm durch verschiedene Authentifizierungsabstufungen in Verbindung gebracht sowie im deutschsprachigen Auktionskatalogen zwischen 1901 und 1918 angeboten wurden. Sie ist eine Quelle ist der Getty Provenance Index® (https://piprod.getty.edu/starweb/pi/servlet.starweb?path=pi/pi.web). Die Daten in der Tabelle sind Teil der Grundlage für die quantitative Auswertung der Masterarbeit "Rembrandt 'graphisch'. Eine quantitative Datenanalyse anhand digitalisierter deutschsprachiger Auktionskataloge zwischen 1901 und 1918". - 2023-08-18Tabular Data
Übersicht der „Rembrandt“-Gemälde anbietenden Auktionshäuser im Zeitraum zwischen 1901 und 1918 im deutschsprachigen Raum, mit Auflistung der Anzahl der Auktionen und sogenannten „Rembrandt“-Originalen
Die Tabelle trägt quantitative Informationen zu Auktionshäusern, Auktionen und angeblich originalen Rembrandt-Gemälden zusammen, die zwischen 1901 und 1918 im deutschsprachigen Raum in Auktionskatalogen angeboten wurden. Quellen sind die German Sales (https://www.arthistoricum.net/themen/portale/german-sales/auktionskataloge) und der Getty Provenance Index® (https://piprod.getty.edu/starweb/pi/servlet.starweb?path=pi/pi.web). Die Daten in der Tabelle sind Teil für die quantitative Auswertung der Masterarbeit "Rembrandt 'graphisch'. Eine quantitative Datenanalyse anhand digitalisierter deutschsprachiger Auktionskataloge zwischen 1901 und 1918". - 2023-07-10Audio
Research data for the article: Is It Fundamental to Examine the Weather Data for a Reliable Building Energy Simulation? A Comparative Study with Different Weather Datasets
This study investigates the sensitivity of building energy simulations to the selection of different typical-year weather datasets generated from different periods of record compared to the average annual and monthly heating demand and peak load of buildings in different climate geo-clusters of Europe. Three weather datasets are employed: 1) a typical-year weather data generated from years before 2000; 2) a typical-year weather data generated from years between 2006 and 2015; 3) a synthetic weather data produced by modifying the typical-year weather dataset with hourly average actual weather data. The simulation results using these weather datasets including the annual and monthly heating demand and peak load are compared with the average energy use and peak load for the years between 2006 and 2015. The results verify that the annual variation in energy demand for using different typical-year weather datasets ranges from -4.2% and 53.3%. The results also indicate a discrepancy between -49.4% to +4.98% for the peak energy load of the buildings. Hence, compared to other studies, we claim that even more dramatic values for over/underestimation of building energy demand and peak load should be expected when employing different typical weather datasets. This study concludes that 1) updating typical-year weather data with actual average dry-bulb temperature may increase the representativeness of the weather data for calculating annual energy demand; 2) typical-year weather data generated from recent years is a better representative for calculating the peak load of the buildings; and 3) with the current computer capacity and the availability of historical weather datasets from various services, utilizing long-term actual weather data is a more cost-effective and accurate approach to represent the real energy demand of the building. The research calls on the standardization organizations to develop new weather data standards that are suitable for different climate zones and account for the effects of climate change on building energy simulation. It also underscores the significance of weather data selection in renovation studies due to its potential economic impact. - 2023-07-29Software
Affinity Android Mobile Application (.apk)
These .apk files are two distinct versions of the Android mobile application that allows users to share ratings on movies through ad-hoc wireless connections in physical proximity and derive recommendations on these ratings on-device. Source code & Build Instructions: https://github.com/TEichinger/affinity-android Version affinity-android-v1.0-alpha(9022019)-debug.apk has been used to produce the results reported in this publication: Tobias Eichinger, Felix Beierle, Robin Papke, Lucas Rebscher, Hong Chinh Tran, and Magdalena Trzeciak. 2019. On gossip-based information dissemination in pervasive recommender systems. In Proceedings of the 13th ACM Conference on Recommender Systems (RecSys '19). Association for Computing Machinery, New York, NY, USA, 442–446. https://doi.org/10.1145/3298689.3347067 Version affinity-android-v1.2-alpha(9023000)-debug.apk addresses many of its privacy-related drawbacks.