Information systems are key facilitators for production planning, configuration, and monitoring in increasingly flexible Cyber-Physical Production systems (CPPSs), such as automated welding lines for joining car parts...
Information systems are key facilitators for production planning, configuration, and monitoring in increasingly flexible Cyber-Physical Production systems (CPPSs), such as automated welding lines for joining car parts. The guideline VDI 2206 provides a V-model to organize the engineering disciplines. It emphasizes the importance of validation in CPPS engineering but provides limited guidance on the up-front specification and validation of test scenarios. This paper introduces the Production Test Scenario Validation (PTSV) approach to validate to what extent a multi-view CPPS design model and associated data sources from production engineering and operation represent the concepts used in test scenarios. The PTSV (i) elicits concepts in pre- and post-conditions of production test scenarios, (ii) maps these concepts to a multi-view CPPS design model, such as a production asset network, and (iii) identifies mismatches between production test scenarios and CPPS design models, such as missing model elements or data sources required for validation. We evaluated the effectiveness and efficiency of the approach in a feasibility study on a real-world welding line for joining car parts. The results indicate that the PTSV is feasible and effective for improving the capability to measure and analyze outcomes of test scenarios in CPPS engineering according to the VDI 2206.
We present a highly efficient approach to compute continuous shortest path vector fields on arbitrarily shaped 3D triangular meshes for robot navigation in complex real-world outdoor environments. The continuity of th...
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We present a highly efficient approach to compute continuous shortest path vector fields on arbitrarily shaped 3D triangular meshes for robot navigation in complex real-world outdoor environments. The continuity of the vector field allows to query the shortest distance, direction and geodesic path to the goal at any point within the mesh triangles, resulting in accurate paths. In order to avoid impassable areas, our wavefront propagation method runs on a modular extendable multilayer map architecture taking different geometric cost layers into account. We describe the mathematical foundation of the geodesic distances and continuous vector field computation and demonstrate the performance in real-world and multilevel environments on our campus with a tunnel, ramps and stair- cases, and in a difficult, steep forest area with a stone quarry. For reproducibility, we provide a ready-to-use ROS software stack as well as Gazebo simulations.
Microbes inhabiting rhizosphere and soils of close vicinity of plants play a pivotal role in plant growth promotion, enhance plant fitness, and improve soil fertility through the cycling of different nutrients like ca...
Microbes inhabiting rhizosphere and soils of close vicinity of plants play a pivotal role in plant growth promotion, enhance plant fitness, and improve soil fertility through the cycling of different nutrients like carbon, nitrogen, sulphur etc. The study of rhizosphere and soil-associated microbiome can enhance our knowledge about different genes (known and novel, both) and pathways associated with various metabolic activities of immense importance. Current agricultural system is heavily dependent on numerous synthetic chemicals like insecticides, fungicides, and herbicides. Regular application of such chemicals has raised the issues of environmental pollution and imposed severe risks on human beings. With extensive research, microbes are now established as the most important means of pesticide degradation. The current study focuses on the identification of different genes and pathways involved in the degradation and remediation of various xenobiotics and their components in the 105 different metagenome and metatranscriptome samples of rhizosphere or associated soil of seven different crops, i.e. wheat, oat, pea, soybean, sugarcane, kodo and common bean. For different kinds of xenobiotics components, biodegradation and associated metabolism were analyzed and numerous gene and enzymes associated with these processes were identified. Statistical and computational analyses revealed several significant pathways, including benzoate degradation, central meta-cleavage pathway, salicylate and gentisate catabolism, and phenylacetyl-CoA catabolic pathway. Identified genes/enzymes are important for degradation of various xenobiotic including constituents of different pesticides. To facilitate access to this information, the researchers developed XenMetaDB, a comprehensive online database cataloging all identified enzymes and pathways, accessible at http://***/xenmetadb/ . Identification of xenobiotics degradating enzymes, genes and their further utilization
Today, thanks to the advancement of robotics and intelligent new technologies, robots are entering more and more into different areas of human life. In doing so, the interaction between humans and robots, involving so...
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The ongoing digitization of the industry leads to new opportunities in industrial maintenance. Several concepts for smart maintenance have been published in literature, however, their application remains limited in in...
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The ongoing digitization of the industry leads to new opportunities in industrial maintenance. Several concepts for smart maintenance have been published in literature, however, their application remains limited in industrial practice. To close the existing gap between research and practice, a novel practice-oriented approach is presented. A modified Weibull model is developed and embodied into a digital assistance system to visualize and predict remaining service life and to forecast the required number of spare parts. The developed model has been implemented in the use case in the heat treatment industry, and the results are presented to demonstrate the effectiveness of the proposed approach.
The paper presents a case study related to the maintenance and on-site detection of faulty photovoltaic (PV) panels in a 14 years old on-grid system with a peak power of 17.82 kW from the National institute for Resear...
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Remote sensing big data workflows are formed by combining workflow and the remote sensing data processing system, and have the capabilities of remote sensing data processing, analysis, and visualization. There are man...
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The worker productivity is now widely recognized as a key factor in determining a company long-term viability. The productivity of an organization workers is a major factor in the company success. Employee productivit...
The worker productivity is now widely recognized as a key factor in determining a company long-term viability. The productivity of an organization workers is a major factor in the company success. Employee productivity is given considerable weight in both organizational psychology and human resource management. Globalization, greater investor and consumer expectations, and fiercer product rivalry all contribute to a dynamic economic climate. Public agencies, faced with intense competition and a reducing cost, must constantly seek ways to boost their efficiency, effectiveness, and customer satisfaction. This action is taken to ensure one continued viability in this hostile ecosystem. In order to analyze the data collected here, a method known as quantitative research was employed.
In the emerging information economy, data evolves as an essential asset and personal data in particular is used for data-driven business models. However, companies frequently leverage personal data without considering...
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This paper presents the design, implementation, and operation of a novel distributed fault-tolerant middleware. It uses interconnected WSNs that implement the MapReduce paradigm, consisting of several low-cost and low...
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