Jade University of Applied Science

Wilhelmshaven, Germany

Jade University of Applied Science

Wilhelmshaven, Germany
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Gassmann S.,Jade University of Applied science | Luque A.,University of Seville | Perdigones F.,University of Seville | Quero J.M.,University of Seville | Pagel L.,Electronic Appliances
IECON Proceedings (Industrial Electronics Conference) | Year: 2013

The usage of standard PCBs (Printed Circuit Boards) for the creation of microfluidic systems was already reported. Here the combination of a standard microtechnology using photolithography and photo sensitive layers (SU8) and the PCB MEMS technology is presented. Using PCBs as the substrate the integration of electronics is simple and the substrate is available at low cost. Putting the sophisticated SU8 based micro technology using photolithography on top, new systems can be created. This combination leads to interesting low cost solutions for micro systems. Both technologies deliver their best, in the PCB technology integrated electrodes and electronics can be created while the SU8 technology adds high resolution high aspect-ratio micro systems which are not possible in a PCB implementation. Using this technology combination several sensor structures can be created. In this paper as successful examples an electrochemical sensor cell array and a flow sensor will be presented. © 2013 IEEE.

John P.,Jade University of Applied science | Noble A.,Antwerp Maritime Academy | Bjorkroth P.,Novia University of Applied Sciences
WMU Journal of Maritime Affairs | Year: 2016

The paper compares the pedagogical advantages of two simulation types used for training verbal maritime communication. It tests the hypothesis that “low-fi” simulation using online web conference software, specifically ‘chat’ or messaging, is a valid complementary tool for the instruction of Maritime English and full-mission simulation. Based on a series of exercises involving multi-national and multi-lingual students, various linguistic patterns are determined and compared to audio recordings of full-mission simulation. Probability of superiority effect sizes is computed to quantify the observed effects. The findings corroborate the proximity of language patterns found in low-fi and full-mission simulation. Pedagogical implications are discussed, and future research possibilities are outlined. © 2016, World Maritime University.

Kurowski M.,University of Rostock | Korte H.,Jade University of Applied science | Lampe B.P.,University of Rostock
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

A novel, satellite-guided rescue system is under development, utilizing an autonomously acting rescue boat to salvage a person overboard to increase significantly the chance of survival. This advanced technology requires new approaches for naval architecture and integration of computer-aided tools to develop and operate such devices. A substantial challenge is the design and the automation of the self-acting autonomous rescue boat which navigates to the person overboard automatically. The design of this free fall rescue vessel guarantees that it will be self-righting. The developed cascaded control concepts were designed to ensure the fastest possible approach to the casualty without endangering the person. A specifically integrated monitoring system supports the entire rescue operation. In this paper, a complex Search-and-Rescue-System for a satellite-supported rescue operation at sea will be presented which couples efficiently independent engineering tasks like naval architecture, control system design as well as information processing and monitoring. © 2012 Springer-Verlag.

Korte H.,Jade University of Applied science | Koeckritz O.,Jade University of Applied science | Kurowski M.,University of Rostock
At-Automatisierungstechnik | Year: 2015

Modern steering devices for ships lead to an improved control capability and allow independent actions without tugs by mates in use with modern electronics. Within the project AdaNav developed MIMO controller enables DP equivalent functions for ships being able to traverse. The following contribution shows the inclusion of such modern maneuvering quality as computer based assistance system into electronic ship guidance systems like ECDIS. To guarantee fully responsibility of mates the concept bases on introduced planning practice implementing additional waypoints and attributes. © 2015 Walter de Gruyter Berlin/Boston.

Kurowski M.,University of Rostock | Kockritz O.,Jade University of Applied science | Korte H.,Jade University of Applied science
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2013

Nowadays vessels are often equipped with modern steering devices like thrusters and podded drives. Such modern steering concepts substantially increase the manoeuvring capability of the vessels. Special manoeuvres, such as berthing and cast off manoeuvres, can be performed by controlling all available aggregates without using tug boats, lines and anchors. Furthermore, the reliability of the position information especially in ports and other safety critical areas has been improved by auxiliary systems. The user gets warranted position data, so that control tasks with high safety requirements can be realised automatically, especially in case of decreased visibility. The deficit of today's track control systems is the path planning method to generate the input values of the specific track control systems by the navigating officer, especially in low speed modes. In order to face this lack, new manoeuvre planning algorithms have been developed and embedded in a simulation and test environment. The feasibility of the developed manoeuvre planning methods is demonstrated with one of the most challenging nautical tasks - the berthing manoeuvre. © IFAC.

Janssen L.,Jade University of Applied science | Claus T.,TU Dresden | Sauer J.,University of Oldenburg
International Journal of Production Economics | Year: 2016

The aim of this work is not only to give an up-to-date review of perishable inventory models, but also of the joint key topics of publications from January 2012 until December 2015 in the research area of deteriorating inventory models. The advantage of this review is the ability to quickly find papers according to given key topics. Methodically, this paper is based on the literature review of Bakker et al. (2012). However, we slightly modify the classification of inventory models of perishable goods in our work, and extend the existing key topics. © 2016 The Authors

Schmittendorf E.,Jade University of Applied science | Schultheiss B.,Jade University of Applied science | Bohning N.,IDoc Institute fur Telemedizin und Gesundheitskommunikation GmbH and Co. KG
Biomedizinische Technik | Year: 2011

Oxygen saturation obtained from nocturnal pulse oximetry is a significant evaluation parameter for sleep related breathing disorders, especially in the diagnosis of the obstructive sleep apnea syndrome (OSA). Today clinical interpretation relies mainly on the number of desaturation events per hour (oxygen desaturation index, ODI). In this study various alternatives were established and their applicability for OSA screening was evaluated. The discussed methods include time-based approaches (Δ-index), non-linear analysis (central tendency measure, approximate entropy), and spectral methods (Welch transform, wavelet transform). When applied to 192 data sets (132 male, 60 female, 47.9±15.5 years, BMI 27.4±6.5 kg/m2) these methods showed good correlation with clinical findings. When discriminating between non-OSA and OSA patients the approaches under investigation yield sensitivity values between 96.6% and 100% and specificity values between 97.4% and 100%. Particularly spectral methods could provide parameters for an optimized OSA screening based on nocturnal pulse oximetry. © 2011 by Walter de Gruyter Berlin Boston.

Roggenbuck O.,University of Oldenburg | Reinking J.,University of Oldenburg | Harting A.,Jade University of Applied science
Marine Geodesy | Year: 2014

Thanks to the latest developments in GNSS data processing the antenna heights aboard a ship can be determined with accuracies of up to 5 cm, also in the open ocean. These heights are a good basis to derive precise in-situ data of sea surface heights independently from satellite altimetry. However, for a reliable determination of sea surface heights, some essential hydrostatic and hydrodynamic corrections must be considered, as explained in this paper. Furthermore, an ocean wide determination of sea surface height from measurements on a container ship in the Pacific Ocean is presented. The results are compared with those from the Jason-2 altimeter. © 2014 Copyright Taylor & Francis Group, LLC.

Richter J.,Jade University of Applied science | Korte H.,Jade University of Applied science
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2013

The installation and maintenance of offshore wind energy farms is a dangerous field of work. To increase the safety of these operations, the ongoing research project Safe Offshore Operations (SOOP), was launched in 2011. One objective of the project is the development and preparation of specialised simulator training scenarios for offshore personnel. Because of their high degree of realism, commercial simulators are used. Although these simulations are capable of modelling a wide range of situations physically correctly, the special demands of offshore operations on the simulation environment might exceed the boundaries of the implemented mathematical models. To ascertain the validity of the training sessions, custom simulations specialised on the problems at hand are developed and used for comparison with the results of commercial simulators. The current state of development of the implementation and its placing within the project SOOP is presented. © IFAC.

Nolle L.,Jade University of Applied science
Mendel | Year: 2015

Autonomous underwater vehicles (AUVs) can be utilised to search the seafloor for resources, such as black smokers or dissolved organic matter (DOM) discharges. If the area is too large for a single AUV, a swarm of such vehicles can be used to carry out the search collectively. Since AUVs are expensive, those swarms are usually relatively small. Hence, effective and efficient collaboration schemes and search strategies are required. In this research, a collaboration scheme based on particle swarm optimisation (PSO) is proposed and evaluated using a swarm of three, respectively four, simulated AUVs. It has been shown that standard particle swarm optimisation gets easily trapped into local optima. Therefore, a scout vehicle is introduced which samples the entire search space in a systematic but sparse way. It updates the global best solution of the particle swarm if it finds a better region. It was shown that this scheme is capable of guiding the swarm towards more promising regions of the search space and therefore helps the swarm to escape local optima.

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