Steffen Krause

Prof. Dr. Steffen Krause

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Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 January 2022 in IEEE Access
Verified
Journal Article
Open access
Fernando Solano DonadoFernando Solano Donado
Fernando Solano Donado
SKSteffen Krause
Steffen Krause
CWChristoph Wollgens
Christoph Wollgens
We present and evaluate an IoT-enabled sensing and actuating system for localizing illegal industrial harsh discharges of polluting wastewater in sewer networks. The special conditions of the sewer environment bring special challenges for the design of an IoT system and of its real-time algorithm for anomaly detection and localization in wastewater networks. The proposed design fulfills these requirements by using a new IoT architecture pattern, which we generalize and name Hop-by-hop Anomaly Detection and Actuation (HADA). The distributed anomaly detection and localization algorithm makes predictions over previous sensor measurements, while taking into account seasonality effects of wastewater and noise of the sensors. Based on simulations in a large network with three common illegal industrial wastewater pollutants, the advantages and limitations of the proposed wastewater anomaly localization system are discussed. The IoT system, including its anomaly detection and localization algorithm, was implemented using in a low-power microcontroller and tested in flowing wastewater with different harsh industrial waste.

9 April 2019 in Water
Verified
Journal Article
Open access
PDF file
LBLisa Bross
Lisa Bross
SKSteffen Krause
Steffen Krause
MWMia Wannewitz
Mia Wannewitz
ESEva Stock
Eva Stock
Simone SandholzSimone Sandholz
Simone Sandholz
IWIna Wienand
Ina Wienand
Drinking water supply is at the core of both, humanitarian action in times of crisis, as well as national policies for regular and emergency supply. In countries with a continuous water supply, the population mostly relies ingenuously on the permanent availability of tap water due to high supply standards. In case of a disruption in the drinking water infrastructure, minimum supply standards become important for emergency management during disasters. However, wider recognition of this issue is still lacking, particularly in countries facing comparably fewer disruptions. Several international agencies provide guideline values for minimum water provision standards in case of a disaster. Acknowledging that these minimum standards were developed for humanitarian assistance, it remains to be analyzed whether these standards apply to disaster management in countries with high supply standards. Based on a comprehensive literature review of scientific publications and humanitarian guidelines, as well as policies from selected countries, current processes, contents, and shortcomings of emergency water supply planning are assessed. To close the identified gaps, this paper flags potential improvements for emergency water supply planning and identifies future fields of research.

20 January 2015 in Urologia Internationalis
Verified
Journal Article
Closed access
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IBIngrid Berger
Ingrid Berger
CWClemens Wehrberger
Clemens Wehrberger
APAnton Ponholzer
Anton Ponholzer
MWMartina Wolfgang
Martina Wolfgang
TMThomas Martini
Thomas Martini
SMStephan Madersbacher
Stephan Madersbacher
Objective: A potential strategy to decrease the high complication rate of radical cystectomy (RC) in the elderly is to avoid the use of bowel for urinary diversion. The aim of this study was to address this issue in a multicentre study of patients aged ≥75 years. Patients and Methods: We performed a retrospective, multicentre study of a consecutive series of patients aged ≥75 years who underwent RC for muscle-invasive bladder cancer between 2006 and 2010. Medical, surgical and wound complications were graded according to the modified Clavien-Dindo classification. Results: A total of 256 patients (68% men, mean age 79.6 years) were analysed. 204 (80%) patients received a urinary diversion with use of bowel and 52 (20%) a ureterocutaneostomy (UC). Patients with UC were older (82.0 vs. 78.9 years, p < 0.001) and had a higher ASA score (2.6 vs. 2.3, p = 0.007), while the mean Charlson score was lower (4.2 vs. 5.6, p < 0.001). Patients with UC had a shorter operating time (279 vs. 311 min, p = 0.002) and a shorter period in the intensive care unit (0.9 vs. 2.2 days). The overall rate of severe complications graded as Clavien III-V was significantly lower in the UC group (11.5%) as compared to patients receiving bowel for urinary diversion (25.0%) (p = 0.003). Severe (Clavien grade III-V) medical (3.9 vs. 10.3%) and surgical (2.1 vs. 14.1%) complications were all less frequent in the UC group. Inpatient, 30- and 90-day mortality was 5.8, 7.7 and 17.3% in the UC group as compared to 3.9, 5.9 and 6.9% in the bowel cohort, respectively. Conclusion: UC following RC is associated with a lower complication rate in geriatric patients. The constantly increasing cohort of geriatric, multimorbid patients requiring cystectomy might justify reconsideration of this form of diversion.

16 January 2021 in Sustainability
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Journal Article
Open access
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Alexander FeketeAlexander Fekete
Alexander Fekete
LBLisa Bross
Lisa Bross
SKSteffen Krause
Steffen Krause
Florian NeisserFlorian Neisser
Florian Neisser
KTKATERINA TZAVELLA
KATERINA TZAVELLA
Current agendas such as the Sendai Framework for Disaster Risk Reduction or the Sustainable Development Goals are demanding more integration of disaster risk management into other thematic fields and relevant sectors. However, certain thematic fields such as shelter planning and critical infrastructure have not been integrated yet. This article provides an analysis of minimum humanitarian standards contained in the well-known Sphere handbook. Gaps are identified for several critical infrastructure services. Moreover, guidance on how to derive infrastructure or lifeline needs has been found missing. This article analyses the missing service supply and infrastructure identification items and procedures. The main innovation is a more integrative perspective on infrastructure that can improve existing minimum humanitarian standards. It can guide the provision of infrastructure services to various types for different hazard scenarios, hence make humanitarian aid and shelter planning more sustainable in terms of avoiding infrastructure or lifeline shortages.

5 December 2023 in Journal of Water and Health
Verified
Journal Article
Open access
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SKSteffen Krause
Steffen Krause
EJElena Joel
Elena Joel
CSChristian Schaum
Christian Schaum
JBJan Bäumer
Jan Bäumer
NRNadine Rücker
Nadine Rücker
SSSimone Sandholz
Simone Sandholz
Disasters such as the Ahr Valley flood in 2021 make us aware of the importance of functioning healthcare facilities. Their functionality depends on the availability of drinking water. Water safety planning is a long-established method to increase the safety of water utilities. Our work supports the implementation of water safety planning in healthcare facilities during normal operations and emergency situations concerning the water supply. The authors conducted a stakeholder mapping exercise and problem awareness analysis. Based on these results, it was identified what is needed to overcome barriers to water safety planning (WSP). Building on existing procedures, the WSP concept, and latest scientific findings, an event-specific risk assessment method for healthcare facilities was developed and applied in a case study. Based on an analysis of water demand, water-related processes, and infrastructure, potentially necessary components for establishing an emergency supply were identified. For these, based on technical and legal requirements, planning principles were developed, and prototypes of components for emergency water supply were built. They were tested in pilot trials, particularly regarding hygienic safety. For the management of crises in hospitals, a survey was carried out on the command structures used in practice. Finally, recommendations were drawn based on the German Hospital Incident Command System.

2 September 2020 in Sustainability
Verified
Journal Article
Open access
PDF file
LBLisa Bross
Lisa Bross
IWIna Wienand
Ina Wienand
SKSteffen Krause
Steffen Krause
Emergency preparedness planning in the water supply sector includes preventive measures to minimize risks as well as aspects of crisis management. Various scenarios such as floods, power failures or even a pandemic should be considered. This article presents a newly developed composite indicator system to assess the status of emergency preparedness planning in the German water supply. Two weighting methods of the indicators are compared: the indicator system was applied to a case study and a Germany-representative data set. The results show that there is a need for action in emergency preparedness planning in the German water supply. This is in particular due to a lack of risk analyses and insufficient crisis management. Numerous water supply companies and municipalities are already well-prepared, however, there is a need for action at several levels, especially in the area of risk analysis and evaluation of measures. In Germany, responsibility for this lies primarily with the municipalities.