scholarly journals Inconsistency Management in Heterogeneous Models - An Approach for the Identification of Model Dependencies and Potential Inconsistencies

2019 ◽  
Vol 1 (1) ◽  
pp. 3661-3670 ◽  
Author(s):  
Niklas Kattner ◽  
Harald Bauer ◽  
Mohammad R. Basirati ◽  
Minjie Zou ◽  
Felix Brandl ◽  
...  
Keyword(s):  
Systems Engineering ◽  
Industrial Case Study ◽  
Heterogeneous Model ◽  
Positive Effects ◽  
Inconsistency Management ◽  
Heterogeneous Models ◽  
Software Implementations ◽  
Interdisciplinary Projects ◽  
Engineering Projects

AbstractIn today's engineering projects, interdisciplinary work leads to an increase in interfaces between different departments and domains. As each stakeholder pursues different goals and tasks, a heterogeneous model landscape is required. In each domain, a variety of different model and software implementations provide the essential basis for efficient work. On the interfaces, the risk of model inconsistencies increases. To handle occurring inconsistencies, various approaches have been presented. For model-based systems engineering projects, rule-based methods are considered as the most suitable technique. However, said approaches require a high manual effort in identifying model dependencies and establishing consistency rules. Unfortunately, in particular these steps are not well described and supported. Therefore, this paper presents an easily applicable approach for the identification of model dependencies in interdisciplinary projects. The method is supported by a software implementation and is directly integrated in engineering workflows. A first industrial case study has shown positive effects of the approach and revealed further research goals.

scholarly journals A Fuzzy Method for Propagating Functional Architecture Constraints to Physical Architecture

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Eric Bonjour ◽  
Samuel Deniaud ◽  
Maryvonne Dulmet ◽  
Ghassen Harmel
Keyword(s):  
New Product Development ◽  
Domain Architecture ◽  
New Product ◽  
Product Architecture ◽  
Industrial Case Study ◽  
Modular Product ◽  
Early Design Stages ◽  
The Impact ◽  
Engineering Projects

Modular product design has received great attention for about 10 years, but few works have proposed tools to either jointly design the functional and physical architectures or propagate the impact of evolutions from one domain to another. In this paper, we present a new method supporting the product architecture design. In new product development situations or in re-engineering projects, system architects could use this method in the early design stages to predetermine cohesive modules and integrative elements and to simulate a domain architecture by propagating architecture choices from another domain. To illustrate our approach, we present an industrial case study concerning the design of a new automobile powertrain.

scholarly journals A preliminary approach for modelling and planning the composition of engineering project teams

2007 ◽  
Vol 221 (7) ◽  
pp. 1255-1265 ◽  
Author(s):  
G Coates ◽  
A H B Duffy ◽  
W Hills ◽  
R I Whitfield
Keyword(s):  
Development Strategy ◽  
Project Teams ◽  
Project Work ◽  
Allocation Strategy ◽  
Complex Activity ◽  
Engineering Project ◽  
Industrial Case Study ◽  
Project Duration ◽  
Engineering Projects

Managing engineering projects is a complex activity involving multiskilled engineers, who have varying levels of capability in these skills. This paper outlines a preliminary approach to modelling and planning the composition of engineering project teams, taking into consideration the skills and capabilities of engineers and the nature of the project work to be undertaken. The approach includes a simple means of identifying engineers' skills and then quantifying their level of capability in these skills. Subsequently, the approach uses a genetic algorithm along with a task-to-engineer allocation strategy to establish how best to utilize the mix of skills and capabilities of the team of engineers assigned to the project under consideration. The approach also provides a means of identifying imbalances or shortfalls in skill and capability within a team, and the formulation of an appropriate development strategy to redress/overcome them. An application of the approach to an industrial case study is presented, which led to significant potential reductions in expected project duration and labour cost. These potential reductions could be achieved by appropriately modelling engineers' skills and capabilities, and redressing the imbalance within the team through proposed changes to its composition.

Wissensasymmetrien, Interaktionsrollen und die Frage der „gemeinsamen“ Sprache in der interdisziplinären Projektkommunikation

Fachsprache ◽  
2017 ◽  
Vol 33 (3-4) ◽  
pp. 187-204
Author(s):  
Nina Janich ◽  
Ekaterina Zakharova
Keyword(s):  
Process Models ◽  
Project Work ◽  
Common Language ◽  
Project Proposal ◽  
Communication Problems ◽  
Project Participants ◽  
Interdisciplinary Projects ◽  
Social Scientific ◽  
Initial Results

goal of the present discourse analysis is to report on the initial results of a DFG project on communication in interdisciplinary projects. Based on a case study, the following questions were investigated: 1) at what times or phases of a project communication problems occur, 2) what kinds of problems occur as a result of knowledge asymmetries, and 3) which interactive and discourse roles do participants take on when facing such problems? Three main conclusions can be drawn from the findings; first, that linguistic-communicative problems occurring in interdisciplinary projects are not simply a result of attempts to find a “common language”, but are grounded in issues of contextual, methodological, organisitory, and socio-pragmatic agreements. Second, these communication problems arise during the initial, preparatory phases of a project, earlier than social scientific process models suggest, i. e. as early as the writing and submission of the project proposal, as opposed to when the project work actually begins. Third, that these problems, induced by the inevitable presence of knowledge asymmetries among participants, must be resolved not only through active and consistent meta-communication, but also through meta-meta-communication. Evidence for these findings was gathered by means of interviews with project participants in which they reflected on the phase of jointly writing their project proposal from the perspective of their respective disciplines.

MH-53J/M Pave Low III/IV Systems Engineering. Case Study

2010 ◽  
Author(s):  
William Albery ◽  
Raymond L. Robb ◽  
Lee Anderson
Keyword(s):  
Systems Engineering

scholarly journals Controllable and decomposable multidirectional synchronizations

2021 ◽  
Author(s):  
Gábor Bergmann
Keyword(s):  
Systems Engineering ◽  
Large Scale ◽  
Mathematical Framework ◽  
Collaborative Systems ◽  
Consistency Constraints ◽  
Restoration Mechanism ◽  
Common Goals ◽  
Access Privileges ◽  
Novel Concept ◽  
Engineering Projects

AbstractStudying large-scale collaborative systems engineering projects across teams with differing intellectual property clearances, or healthcare solutions where sensitive patient data needs to be partially shared, or similar multi-user information systems over databases, all boils down to a common mathematical framework. Updateable views (lenses) and more generally bidirectional transformations are abstractions to study the challenge of exchanging information between participants with different read access privileges. The view provided to each participant must be different due to access control or other limitations, yet also consistent in a certain sense, to enable collaboration towards common goals. A collaboration system must apply bidirectional synchronization to ensure that after a participant modifies their view, the views of other participants are updated so that they are consistent again. While bidirectional transformations (synchronizations) have been extensively studied, there are new challenges that are unique to the multidirectional case. If complex consistency constraints have to be maintained, synchronizations that work fine in isolation may not compose well. We demonstrate and characterize a failure mode of the emergent behaviour, where a consistency restoration mechanism undoes the work of other participants. On the other end of the spectrum, we study the case where synchronizations work especially well together: we characterize very well-behaved multidirectional transformations, a non-trivial generalization from the bidirectional case. For the former challenge, we introduce a novel concept of controllability, while for the latter one, we propose a novel formal notion of faithful decomposition. Additionally, the paper proposes several novel properties of multidirectional transformations.

scholarly journals Estimation of Damage Induced by Single-Hole Rock Blasting: A Review on Analytical, Numerical, and Experimental Solutions

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Mahdi Shadabfar ◽  
Cagri Gokdemir ◽  
Mingliang Zhou ◽  
Hadi Kordestani ◽  
Edmond V. Muho
Keyword(s):  
Structural Reliability ◽  
Numerical Models ◽  
Experimental Models ◽  
Rock Blasting ◽  
Discussion Section ◽  
Reliability Models ◽  
Fine Grain ◽  
Experimental Approaches ◽  
Engineering Projects

This paper presents a review of the existing models for the estimation of explosion-induced crushed and cracked zones. The control of these zones is of utmost importance in the rock explosion design, since it aims at optimizing the fragmentation and, as a result, minimizing the fine grain production and recovery cycle. Moreover, this optimization can reduce the damage beyond the set border and align the excavation plan with the geometric design. The models are categorized into three groups based on the approach, i.e., analytical, numerical, and experimental approaches, and for each group, the relevant studies are classified and presented in a comprehensive manner. More specifically, in the analytical methods, the assumptions and results are described and discussed in order to provide a useful reference to judge the applicability of each model. Considering the numerical models, all commonly-used algorithms along with the simulation details and the influential parameters are reported and discussed. Finally, considering the experimental models, the emphasis is given here on presenting the most practical and widely employed laboratory models. The empirical equations derived from the models and their applications are examined in detail. In the Discussion section, the most common methods are selected and used to estimate the damage size of 13 case study problems. The results are then utilized to compare the accuracy and applicability of each selected method. Furthermore, the probabilistic analysis of the explosion-induced failure is reviewed using several structural reliability models. The selection, classification, and discussion of the models presented in this paper can be used as a reference in real engineering projects.

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