Papers

Simulation-based Single versus Dual Sourcing Analysis in the Supply Chain with Consideration of Capacity Disruptions, Big Data and Demand Patterns


Sourcing strategy analysis in the settings of supply chain flexibility in regard to single vs dual sourcing has been a well explored area over the last two decades. In recent years, single vs dual sourcing analy-sis has been increasingly introduced in supply chain disruption management. Since most of the deci-sion-support models for supply chain sourcing strategy adaptation in the case of disruptions presume real-time information and coordination, the issues of Big Data and business...

Simulation-based Ripple Effect Modelling in the Supply Chain


In light of low-frequency/high-impact disruptions, the ripple effect has recently been intro-duced into academic literature on supply chain management. The ripple effect in the supply chain results from disruption propagation from the initial disruption point to the supply, pro-duction and distribution networks. While optimization modelling dominates this research field, the potential of simulation modelling still remains under-explored. The objective of this study is to reveal research gaps...

Sustainable Development in Surgery: The Health, Poverty, and Equity Impacts of Charitable Surgery in Uganda


The recently adopted Sustainable Development Goals call for the end of poverty and the equitable provision of healthcare. These goals are often at odds, however: health seeking can lead to catastrophic spending, an outcome for which cancer patients and the poor in resource-limited settings are at particularly high risk. How various health policies affect the additional aims of financial wellbeing and equity is poorly understood. This paper evaluates the health, financial, and equity impacts of...

Building a Simulation Model to Characterize Interacting Workflows and to Explore New Workflow Alternatives


Sortie Generation Rate (SGR) is an important metric for air dominance. Lockheed Martin must demonstrate that the Air System can fly the sorties during an allotted time and deliver the capability to the war fighter. Aircraft turnaround time- the time between when the aircraft touches down, refuels, rearms, and completes inspections in order to release the aircraft, to aircraft wheels up - plays an important role in achieving the SGR requirement. The turnaround process is highly complex and...

Evaluation of Outbreak Response Immunization in the Control of Pertussis Using Agent-based Modeling


Pertussis control remains a challenge due to recently observed effects of waning immunity to acellular vaccine and suboptimal vaccine coverage. Multiple outbreaks have been reported in different ages worldwide. For certain outbreaks, publichealth authorities can launch an outbreak response immunization (ORI) campaign to control pertussis spread. The authors developed an agent-based model to investigate effects of outbreak response immunization campaigns targeting young adolescents in...

Falling Off the Cliff? Increasing Economic Security for Low Income Adults as the Safety Net Shrinks


The public assistance system is supposed to offer a bridge between poverty and self-sufficiency. Families receive benefits such as Temporary Assistance for Needy Families (TANF) or Supplemental Nutrition Assistance Program (SNAP) to soften the impact of loss of income. The programs are intended to be limited in duration and provide a very modest amount of financial support. Some families are fortunate to also receive a housing voucher or a child care subsidy to help offset basic...

Agent-based Analysis of Picker Blocking in Manual Order Picking Systems: Effects of Routing Combinations on Throughput Time


Order picking is one of the most labor- and time-consuming processes in supply chains. Improving the performance of order picking is thus a frequently researched topic. Due to high cost pressure for warehouse managers the space in storage areas has to be used efficiently. Hence narrow-aisle warehouses where order pickers cannot pass as well as several order pickers working in the same area are common.

This leads to congestion which is in this context referred to as...

Spare Part Management in a Testing Workshop


This paper is mainly talking about how to improve the spare part management in Robert Bosch China Diesel (RBCD) testing work shop using simulation – a new advanced visualized technology. In order to give a clear description of the problem in the following part, we have to introduce the RBCD testing workshop first. As RBCD’s name can tell us, the top 500 company BOSCH has a sub-plant in Wuxi China. Its main products are injectors, at the meantime it also produces...

Agent-based Simulation of the Diffusion Dynamics and Concentration of Toxic Materials From Quantum Dots-based Nanoparticles


Quantum Dots applications in medicine and life sciences (i.e. nanomedicine) range from drug delivery to bio-imaging using nanoparticle labels and from tissue repair and replacement to implantable sensors.The risks of toxicity of quantum dots based nanomedicine and photovoltaic cells stem from their potential to cause undesirable health effects, contaminate the environment (air, water, and land), and adversely affect susceptible parts of the population (e.g. workers at nano-manufacturing...

Simulation Model to Control Risk Levels on Process Equipment Through Metrology in Semiconductor Manufacturing


The strategies of semiconductor manufacturing companies to improve their performance are based on performance measures such as yield, throughput and cycle time. To reach these objectives, control plans are used to supervise the behavior of process tools. Due to the complexity of this industry, a permanent review to check the effectiveness of control steps is necessary. To manufacture an integrated circuit, wafers pass through numerous process steps such...