Christian Wankmüller

Dr. Christian Wankmüller

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Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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1 November 2021 in International Journal of Disaster Risk Reduction
Verified
Journal Article
Closed access
CWChristian Wankmüller
Christian Wankmüller
MKMaximilian Kunovjanek
Maximilian Kunovjanek
SMSebastian Mayrgündter
Sebastian Mayrgündter

24 September 2019 in Journal of Business Economics
Verified
Journal Article
Open access
PDF file
CWChristian Wankmüller
Christian Wankmüller
GRGerald Reiner
Gerald Reiner
In recent years, an increasing number of natural and man-made disasters has demonstrated that a working relief supply chain management (RSCM) is crucial in order to alleviate the suffering of the affected population. Coordination, cooperation and collaboration within RSCM is essential for overcoming these destructive incidents. This paper explores the research undertaken in recent years, focusing on coordination, cooperation and collaboration in the field of supply chain management (SCM) and RSCM in order to provide unique definitions of these concepts taking the disaster setting into consideration. A systematic literature review including 202 academic papers published from 1996 onwards in top journals dealing with commercial supply and relief supply chain coordination, cooperation and collaboration is applied. In order to answer the underlying research questions in a proper way, a descriptive analysis and qualitative and quantitative content analysis of the papers are conducted. Descriptive results indicate that RSCM coordination, cooperation and collaboration have increasingly shifted into the focus of scientific research since 2001/2004 (i.e., 9/11 and the Indian Ocean Tsunami). Based on the qualitative content analysis, clear definitions of the terms coordination, cooperation and collaboration in SCM and RSCM were elaborated. The research landscape, as a result of the quantitative content analysis, allowed the identification of three issues that need to be addressed in future research work.

1 June 2021 in Transport Policy
Verified
Journal Article
Open access
MKMaximilian Kunovjanek
Maximilian Kunovjanek
CWChristian Wankmüller
Christian Wankmüller
The COVID-19 pandemic has profoundly altered common social and economic patterns as governments all over the world have been forced to take drastic measures to counter the spread of the disease. Among them, quarantine, the closure of borders, and social distancing are the ones that have affected transportation systems most severely. With the clear need to avoid all unnecessary direct human contact, an increased interest in contactless transportation and delivery modes emerged. Drones are a promising alternative in this regard, especially for the delivery of essential goods, such as COVID-19 viral tests. In this study, we therefore investigate how drones can be used to distribute viral tests to potentially infected patients. The novel approach that we propose is to use existing drone infrastructure to perform this task, where drones owned and operated by different public and private entities are retrofitted for the distribution of essential goods in the case of emergency. In a wider sense, we hence suggest the establishment of a drone enabled back-up transport system. Potential performance gains are analyzed through a mathematical time and cost model that was developed in close cooperation with the state Red Cross Organization and a utility drone manufacturer. Process design as well as parameter estimation are based on empirical investigation including, but not limited to, accompanying a COVID-19 mobile testing team in the field. The practical feasibility was verified by retrofitting drones initially assigned to other purposes. Additionally, policy recommendations, such as the establishment of public-public and public-private partnerships, were identified.

8 December 2020 in Journal of Manufacturing Technology Management
Verified
Journal Article
Open access
PDF file
MKMaximilian Kunovjanek
Maximilian Kunovjanek
CWChristian Wankmüller
Christian Wankmüller
Purpose: The COVID-19 pandemic caused global supply disruptions and shortages that resulted in countries battling over desperately needed (medical) supplies. In this mayhem, additive manufacturing (AM) provided relief to the strained healthcare systems and manufacturing environments by offering an alternative way to rapidly produce desired products. This study sheds light on how AM was used globally in response to the COVID-19 pandemic.Design/methodology/approach: The study undertakes a systematic and content-centric review of 289 additively manufactured products made in response to the COVID-19 pandemic. Additionally, quantitative frequency-based text mining and various descriptive analyses were applied that support the investigation of the subject under regard.Findings: Results show that AM was primarily used in the medical domain for the production of standard medical items, such as personal protective equipment (PPE) but also for non-obvious and new applications (e.g. swab simulator, rapid diagnostic kits, etc.). Also, certain paradigm shifts were observed, as the effective move to mass production and the mitigation of problems related to certification and standardization emerged as prominent management prospects. Nevertheless, various obstacles arose and remained in the path of lasting AM success, especially with respect to print quality, raw material supply and technological versatility.Originality/value: Due to the actuality of the topic under investigation, no comparable study has so far been conducted. The systematic review provides a conclusive and precise foundation for further analysis and subsequent discussions. Additionally, no comparable study mapping such a wide array of different AM products exists today.

9 January 2023 in International Journal of Production Economics
Verified
Journal Article
Closed access
CWChristian Wankmüller
Christian Wankmüller
JPJohannes Pulsfort
Johannes Pulsfort
MKMaximilian Kunovjanek
Maximilian Kunovjanek
RPRomana Polt
Romana Polt
SCStefan Craß
Stefan Craß
GRGerald Reiner
Gerald Reiner

10 February 2020 in OR Spectrum
Verified
Journal Article
Open access
PDF file
CWChristian Wankmüller
Christian Wankmüller
CTChristian OF Truden
Christian OF Truden
CKChristopher Korzen
Christopher Korzen
PHPhilipp Hungerländer
Philipp Hungerländer
EKEwald Kolesnik
Ewald Kolesnik
GRGerald Reiner
Gerald Reiner
Responding to emergencies in Alpine terrain is quite challenging as air ambulances and mountain rescue services are often confronted with logistics challenges and adverse weather conditions that extend the response times required to provide life-saving support. Among other medical emergencies, sudden cardiac arrest (SCA) is the most time-sensitive event that requires the quick provision of medical treatment including cardiopulmonary resuscitation and electric shocks by automated external defibrillators (AED). An emerging technology called unmanned aerial vehicles (or drones) is regarded to support mountain rescuers in overcoming the time criticality of these emergencies by reducing the time span between SCA and early defibrillation. A drone that is equipped with a portable AED can fly from a base station to the patient’s site where a bystander receives it and starts treatment. This paper considers such a response system and proposes an integer linear program to determine the optimal allocation of drone base stations in a given geographical region. In detail, the developed model follows the objectives to minimize the number of used drones and to minimize the average travel times of defibrillator drones responding to SCA patients. In an example of application, under consideration of historical helicopter response times, the authors test the developed model and demonstrate the capability of drones to speed up the delivery of AEDs to SCA patients. Results indicate that time spans between SCA and early defibrillation can be reduced by the optimal allocation of drone base stations in a given geographical region, thus increasing the survival rate of SCA patients.