scholarly journals CONCURRENT CONCEPTUAL DESIGN SEQUENCING FOR MBSE OF COMPLEX SYSTEMS THROUGH DESIGN STRUCTURE MATRICES

2020 ◽  
Vol 1 ◽  
pp. 2375-2384
Author(s):  
S. K. Salas Cordero ◽  
C. Fortin ◽  
R. Vingerhoeds
Keyword(s):  
Complex Systems ◽  
Communities Of Practice ◽  
Case Studies ◽  
Conceptual Design ◽  
Concurrent Design ◽  
Project Design ◽  
Know How ◽  
Model Based ◽  
Sequencing Algorithm ◽  
Design Structure

AbstractWhilst Concurrent Conceptual Design (CCD) has been performed for many years at facilities such as: the Concurrent Design Facility at ESA and the Project Design Center at JPL-NASA, the sequencing know-how resides in their communities of practice. This paper strives to explain how a sequencing algorithm based on Design Structure Matrices can be used as an instrument to facilitate the interaction between disciplines during CCD studies for Model-Based systems exemplified with two case studies.

Model based processing of cardiovascular variability applied to bed-rest case studies

2008 ◽  
Author(s):  
F. Vallais ◽  
F. Aletti ◽  
G. Baselli ◽  
E. Tam ◽  
M. Cautero ◽  
...  
Keyword(s):  
Case Studies ◽  
Bed Rest ◽  
Cardiovascular Variability ◽  
Model Based

scholarly journals Beyond the Central Dogma: Model-Based Learning of How Genes Determine Phenotypes

2016 ◽  
Vol 15 (1) ◽  
pp. ar4 ◽  
Author(s):  
Adam Reinagel ◽  
Elena Bray Speth
Keyword(s):  
Case Studies ◽  
Molecular Genetics ◽  
Systems Thinking ◽  
Protein Function ◽  
Model Building ◽  
Thinking Skills ◽  
Skills Acquisition ◽  
Model Based ◽  
Scaffolded Instruction ◽  
Introductory Biology Course

In an introductory biology course, we implemented a learner-centered, model-based pedagogy that frequently engaged students in building conceptual models to explain how genes determine phenotypes. Model-building tasks were incorporated within case studies and aimed at eliciting students’ understanding of 1) the origin of variation in a population and 2) how genes/alleles determine phenotypes. Guided by theory on hierarchical development of systems-thinking skills, we scaffolded instruction and assessment so that students would first focus on articulating isolated relationships between pairs of molecular genetics structures and then integrate these relationships into an explanatory network. We analyzed models students generated on two exams to assess whether students’ learning of molecular genetics progressed along the theoretical hierarchical sequence of systems-thinking skills acquisition. With repeated practice, peer discussion, and instructor feedback over the course of the semester, students’ models became more accurate, better contextualized, and more meaningful. At the end of the semester, however, more than 25% of students still struggled to describe phenotype as an output of protein function. We therefore recommend that 1) practices like modeling, which require connecting genes to phenotypes; and 2) well-developed case studies highlighting proteins and their functions, take center stage in molecular genetics instruction.

scholarly journals Architecture at the edge of chaos: a model for uncertainty in architecture

2021 ◽  
Author(s):  
Calvin Fung
Keyword(s):  
Complex Systems ◽  
Conceptual Model ◽  
Granular Matter ◽  
Human Agency ◽  
Dynamic Feedback ◽  
Edge Of Chaos ◽  
Model Based ◽  
Ecological Changes ◽  
Unique Approach

The changing needs of society informed by rapid technological, social and ecological changes have disturbed the foundation of permanence on which much of architecture was built. Traditional Western architecture is too solid, hard, and slow—presenting difficulties for it to adequately adapt to change and uncertainty. A reconceptualization of architecture is necessary, one not focused on the certainty of solutions or forms, but one patterned by the dynamic feedback of human agency and environmental forces. For architecture to adapt, and to adapt to unpredictable circumstances, requires that architecture accept uncertainty in its formulation and materialization. Embracing systems-based thinking, a conceptual model based on the complex systems of granular matter provides a unique approach to architecture’s material and immaterial structures. Architecture will then be critically poised at the edge of chaos, ready to reorganize and evolve towards a new fluid paradigm.

scholarly journals A Case Studies Approach to the Analysis of Profiling and Framing Structures for Pervasive Information Systems

2012 ◽  
Vol 4 (2) ◽  
pp. 1-18 ◽  
Author(s):  
José Eduardo Fernandes ◽  
Ricardo J. Machado ◽  
João Á. Carvalho
Keyword(s):  
Information Systems ◽  
Case Studies ◽  
Software Design ◽  
Expert Knowledge ◽  
Structural Approach ◽  
Technological Changes ◽  
Design And Development ◽  
Structure Approach ◽  
Model Based ◽  
Widespread Adoption

Model-Based/Driven Development (MDD) constitutes an approach to software design and development that potentially contributes to: concepts closer to domain and reduction of semantic gaps, automation and less sensitivity to technological changes, and the capture of expert knowledge and reuse. The widespread adoption of pervasive technologies as basis for new systems and applications lead to the need of effectively design pervasive information systems that properly fulfil the goals they were designed for. This paper presents a profiling and framing structure approach for the development of Pervasive Information Systems (PIS). This profiling and framing structure allows the organization of the functionality that can be assigned to computational devices in a system and of the corresponding development structures and models, being. The proposed approach enables a structural approach to PIS development. The paper also presents two case studies that allowed demonstrating the applicability of the approach.

Model Based Design and Optimization for Large Bore Engines: Some Industrial Case Studies

2017 ◽  
Author(s):  
Prashant Srinivasan ◽  
Sanketh Bhat ◽  
Manthram Sivasubramaniam ◽  
Ravi Methekar ◽  
Maruthi Devarakonda ◽  
...  
Keyword(s):  
System Design ◽  
Case Studies ◽  
Control Strategy ◽  
Internal Combustion Engines ◽  
Cost Optimization ◽  
Engine Performance ◽  
Design And Optimization ◽  
Model Based ◽  
Performance Requirements ◽  
Engine Design

Large bore reciprocating internal combustion engines are used in a wide variety of applications such as power generation, transportation, gas compression, mechanical drives, and mining. Each application has its own unique requirements that influence the engine design & control strategy. The system architecture & control strategy play a key role in meeting the requirements. Traditionally, control design has come in at a later stage of the development process, when the system design is almost frozen. Furthermore, transient performance requirements have not always been considered adequately at early design stages for large engines, thus limiting achievable controller performance. With rapid advances in engine modeling capability, it has now become possible to accurately simulate engine behavior in steady-states and transients. In this paper, we propose an integrated model-based approach to system design & control of reciprocating engines and outline ideas, processes and real-world case studies for the same. Key benefits of this approach include optimized engine performance in terms of efficiency, transient response, emissions, system and cost optimization, tools to evaluate various concepts before engine build thus leading to significant reduction in development time & cost.

scholarly journals Model-based mutation testing—Approach and case studies

2016 ◽  
Vol 120 ◽  
pp. 25-48 ◽  
Author(s):  
Fevzi Belli ◽  
Christof J. Budnik ◽  
Axel Hollmann ◽  
Tugkan Tuglular ◽  
W. Eric Wong
Keyword(s):  
Case Studies ◽  
Mutation Testing ◽  
Model Based ◽  
Testing Approach
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