Search results for "SIMULATION"
showing 10 items of 5095 documents
Modeling Marginalization: Emergence, Social Physics, and Social Ethics of Bullying
2020
In this paper, we outline the construction and initial simulation experiment results of the Marginalization model (MARG). We experiment under different group parameters because the theoretical paradigm we follow views bullying as a result of social processes. Our primary research question explores the possibility of bullying emergence as agents select interaction partners in a university setting. Based on the simulated process, our results take indications of the stress of marginalization in a student group as a proxy for emer-gent marginalization. MARG simulates two types of interactions between pairs of students: forced and hang-out interactions. In the latter, students decide whether to …
A Hybrid Model for an E-learning System Which Develops Metacognitive Skills at Students
2013
One of the goals of academic education is to train students in view of acquiring metacognitive skills, thus becoming self-regulated learners prepared for for lifelong learning. The research in this area has proved that metacognition can be taught and learned and that self-regulation behavior can be guided and constrained by the features of the learning environment. In order to become an educational environment, attractive and at the same time efficient for the students and which would enable students to develop their metacognitive skills, the e-learning system needs continuous improvments. This paper presents a hybrid model of an e-learning system, MEM - Metacognitive E-learning system Mode…
A Pilot Study on Offensive Success in Soccer Based on Space and Ball Control – Key Performance Indicators and Key to Understand Game Dynamics
2017
Abstract The intention of Key Performance Indicators (KPI) is to map complex system-behaviour to single values for scaling, rating and ranking systems or system components. Very often, however, this mapping only reduces important information about tactical behaviour or playing dynamics without replacing it by useful ones. The presented approach tries to bridge the gap between complex dynamics and numerical indicators in the case of offensive effectiveness in soccer in two steps. First, a model is developed which visualises offensive actions in a process-oriented way by using information units to represent offensive performance – i.e. Key Performance Indicators. Second, this model is organis…
Overcoming managers’ myopic decisions in a waste collection company
2019
Purpose The purpose of this paper is to show how the changing interrelationships between fleet management, human resources and outsourcer capacity areas are likely to counterbalance managerial policies, thereby generating a performance decay. The use of system dynamics modelling in a waste collection company offered an effective contribution to support decision makers to overcoming myopic decisions. Design/methodology/approach Literature review and a case study analysis (including interviews with company actors and data gathering) offered the basis to build a system dynamics model. The model built was then used to run simulations sessions to assess alternative investments decisions. Findin…
Combining system dynamics modelling and management control systems to support strategic learning processes in SMEs: a Dynamic Performance Management …
2015
Traditional management control systems, mainly centred on accounting-based measures, are widely recognized as useful tools to support Small and Medium Enterprises (SMEs) managers and entrepreneurs in steering business development. However, due to the increasing turbulence and dynamic complexity that characterize today’s competitive arenas, such systems need to be combined with simulation-based methodologies in order to improve entrepreneurial learning processes and, as a result, better detect possible crisis symptoms and weak signals of change—emerging from the business environment—to promptly react. Therefore, the aim of this paper is to show how a combination of traditional management con…
Supporting public sector management through simulation-based methods: a dynamic performance management approach
2018
AbstractThough it draws a number of precursors, simulation-based techniques applied to traditional performance management frameworks constitute a novel approach to support public sector institutions in framing organizational performance dynamics and, as a result, improving public service delivery. This paper aims at contributing to the improvement of the outcomes achievable from the use of traditional performance management systems in the public sector by combining them with a simulation-based method named System Dynamics modeling. Such an approach is called Dynamic Performance Management.
Modeling and Analysis of a New Process for Pyruvate Production
2005
Early process development is crucial for the economic and environmental performance of a final production process. A new process for the production of pyruvate is presented as a case study to show how process modeling and an analysis of the results regarding economic and environmental aspects improves the understanding of the process, its cost structure, and its environmental impact. It also enables the quantification of process improvements and the comparison of alternative designs. The model of the pyruvate production shows how strain and fermentation improvements propagate through the process and affect its economic and environmental performance. The comparison of two alternative purific…
Developing a customizable process modelling environment: Lessons learnt and future prospects
1998
MetaCASE environments are design environments with customisable method support. Currently these environments are shifting from individual production support towards multi-user design environments. When adapting such an environment, the organisational context becomes important. We must focus on and improve the infrastructure (procedures and policies) and support (guidelines, help). Part of organisational support in design environments is process modelling: process models facilitate understanding and communication, process support gives guidance and helps enforcing procedures and policies. In a customisable design environment improvement is seen as a shift, a relatively gradual change that th…
Modelling the transient behaviour of a MED-TVC plant for coupling with CSP
2015
In this paper a dynamic model for the MED-TVC process has been developed and valided by a comparison with data from a real plant situated in Trapani, Italy, composed by 12 effects with parallel-feed configuration and equipped with a medium-pressure steam vapour ejector.
Simulation of a regeneration plant for spent pickling solutions via spray roasting
2015
Nowadays, pyrohydrolysis techniques are widely applied for regeneration of spent pickling liquors providing an excellent environmental and economical strategy to the problem of waste disposal/recovery, also thanks to the high acid recovery efficiencies (>99%) achieved1. In fact, in these processes, iron chlorides are converted into iron oxides and hydrogen chloride at high temperature in spray roasting or fluidized bed reactors2. Though the state-of-the-art technologies have been successfully applied only to large scale plants, the development of small scale units, able to perform a delocalized regeneration of spent solutions where these latter are actually produced, would be strongly ne…