Publications and Talks

@article{Wicaksono2020c,
title = {How Relevant Are Environmental Factors in The Ergonomic Performance Assessments?},
author = {Bai, Xuqi; Wicaksono, Hendro },
url = {https://doi.org/10.1016/j.promfg.2020.11.054},
doi = {10.1016/j.promfg.2020.11.054},
year = {2020},
date = {2020-12-31},
journal = {Procedia Manufacturing},
volume = {52},
pages = {325-330},
abstract = {A suitable working environment is crucial to ensure the worker’s safety and health, results in higher productivity in production systems. As one of the most important elements of production, the assembly processes require the most human involvement. However, researches on ergonomics in assembly systems focus merely on task-related physical factors such as action forces, posture, movement, task repetition, etc. This paper aims to investigate the relevance of environmental measures of temperature, humidity, ventilation, noise, lighting, and cleanness to the assembly workers, and the relative importance of environmental factors in comparison with the task-related physical factors. A survey was conducted among 20 assembly workers and engineers in the hope to realize the urgency to integrate environmental characteristics into routinely conducted ergonomic performance assessments.},
keywords = {ergonomics, manufacturing, resource efficient manufacturing},
pubstate = {published},
tppubtype = {article}
}

@article{Wicaksono2020d,
title = {An Automated Information System for Medium to Short-Term Manpower Capacity Planning in Make-To-Order Manufacturing},
author = {Wicaksono, Hendro; Ni, Tianran},
url = {https://doi.org/10.1016/j.promfg.2020.11.053},
doi = {10.1016/j.promfg.2020.11.053},
year = {2020},
date = {2020-12-31},
journal = {Procedia Manufacturing},
volume = {52},
pages = {319-324},
abstract = {In today’s tough economy, it is important for (Make-To-Order) MTO companies to be responsive to customer demand and market fluctuations and to keep the costs as low as possible at the same time. Unlike in Make-To-Stock (MTS), MTO companies hold capacity in reserve. Thus, they are able to make efficient utilization of available capacity to satisfy customer needs. This then leads to a constant capacity planning problem. The companies are facing fluctuations between overload by lack of sufficient capacity, and idleness by excess of capacity comparing to the level of demand. Among all the planning resources, the available manpower is one of the most essential parts of the MTO operations. Therefore, the allocation and adjustment of manpower capacity that suits different planning horizons is a predominant measure to meet the changing capacity demands. Nonetheless, a signing each individual labor to various types of tasks and orders on a day to day basis continually for the planning horizon of several weeks or months is difficult. This paper presents an approach of automated manpower planning model which can be used by MTO operations to achieve a better transparency and synchronization of capacity load for short to medium planning horizons. The approach is implemented as a software tool to automate the data processing and analysis, which helps to dramatically reduce the corresponding data operation efforts and planning time. This paper also presents the validation of the approach and tool in a real production unit in a German small MTO manufacturing company.},
keywords = {information systems, Information visualisation, production planning and control, resource efficient manufacturing},
pubstate = {published},
tppubtype = {article}
}

@inproceedings{Rogalski2013b,
title = {Resource efficient planning and operation of production system using IT-supported flexibility management},
author = {Sven Rogalski and Jan Siebel and Hendro Wicaksono},
year = {2013},
date = {2013-08-01},
booktitle = {Proceeding the 22nd International Conference on Production Research, Brazil, 28 July – 1 August, 2013},
abstract = {For years, manufacturing companies have faced an increasingly complex and rapidly changing market environment which is the result of, if nothing else, higher customer individualization. This particularly concerns SME’s, whose competitiveness is increasingly dependent on the early identification of new customer and market requirements and their ability to dynamically respond to these in an adequate fashion. In order to meet the high standards demanded of the planning quality and planning safety with ever increasing complexity and the continuous reduction of the planning time available, SME-compatible IT technologies are needed for the simulation of complex manufacturing relations. The following article addresses this problem and introduces the method set ecoFLEX, which enables the simulation of targeted and dynamic alignment of existing plant structures, resources and value-added processes with new production requirements. Unlike digital factory planning tools, a complete picture of the specific plant situation is not required, as will be illustrated by selected case studies from the medium sized production sector.},
keywords = {manufacturing, manufacturing flexibility, production planning and control, resource efficiency, resource efficient manufacturing, SME oriented technology},
pubstate = {published},
tppubtype = {inproceedings}
}

@inproceedings{Rogalski2012,
title = {Sustainable Production Planning Through Flexibility Measurements In Different Manufacturing Organizational Levels},
author = {Sven Rogalski and Jan Siebel and Kiril Aleksandrov and Hendro Wicaksono},
year = {2012},
date = {2012-11-02},
booktitle = {Proceeding 10th Global Conference of Sustainable Manufacturing (GCSM)},
abstract = {Production companies operate in increasingly turbulent and discontinuous environments. The rapid speed of change, coupled with a high complexity of cause-effect relationships of industries, globally-dispersed markets, technologies and economic areas create great challenges to the manufacturing systems. Therefore, a more holistic view of technical and organizational freedom is needed in production to support sustainable planning, control and modification of manufacturing systems, which incorporate system and life cycle aspects to the goal of profitability. Hence, reliable statements about flexibility on different organisational levels in a manufacturing system have a considerable role to ensure resource efficiency.
The following paper details the concept for calculating the production flexibility and the application experience in industrial production from the flexibility assessment toolbox ecoFLEX. It enables the simulation of targeted and dynamic alignment of existing plant structures and value-added processes with external environmental and internal changes. Unlike digital factory planning tools, a complete picture of the specific plant situation is not required, as will be illustrated by selected case studies from the medium sized assembling and stamping production enterprises.
},
keywords = {change management, digital factory, flexibility measurement, manufacturing, resource efficient manufacturing},
pubstate = {published},
tppubtype = {inproceedings}
}

@inbook{Rogalski2011,
title = {Methodology for Flexibility Measurement in Semi-automatic Production},
author = {Sven Rogalski and Hendro Wicaksono},
editor = {Hoda A. ElMaraghy},
url = {https://link.springer.com/chapter/10.1007%2F978-3-642-23860-4_23},
doi = {10.1007/978-3-642-23860-4_23},
isbn = {978-3-642-23860-4},
year = {2011},
date = {2011-09-15},
pages = {141-146},
publisher = {Springer Berlin Heidelberg},
address = {Berlin, Heidelberg},
abstract = {Demands on production systems are changing constantly as a result of changing competitive conditions and are also closely linked to the performance goals of time, quality, costs and innovation ability. This results in an ever increasing selection between various competitors, with the most important selection criteria being customer individualization, an increasingly shorter product life cycle and new technological innovations. This situation creates an existential need for production companies to manage to adapt over time to the changed surrounding conditions and plan their resources in a way that makes them suitable for cost-effective and market-oriented manufacturing. The following article presents the computerized methodology of an innovative evaluation technique called ecoFLEX which allows the measurement of a production system's flexibility. At first the paper details the general concept for estimating production flexibility and the approach to concretely calculating the flexibility on different production levels. Furthermore, it presents the practical experience gained in ecoFLEX during its application at a small and medium enterprise (SME) to evaluate the complex manufacturing coherencies from the perspective of their efficiency. Especially it will be shown how the usage of flexibility indices calculated by ecoFLEX helps to come to the right decision on the strategic and operational level in production systems.},
keywords = {flexibility measurement, manufacturing, resource efficient manufacturing},
pubstate = {published},
tppubtype = {inbook}
}