design problems
Recently Published Documents


TOTAL DOCUMENTS

2872
(FIVE YEARS 516)

H-INDEX

69
(FIVE YEARS 7)

Author(s):  
Samira El Moumen ◽  
Siham Ouhimmou

Various engineering design problems are formulated as constrained multi-objective optimization problems. One of the relevant and popular methods that deals with these problems is the weighted method. However, the major inconvenience with its application is that it does not yield a well distributed set. In this study, the use of the Normal Boundary Intersection approach (NBI) is proposed, which is effective in obtaining an evenly distributed set of points in the Pareto set. Given an evenly distributed set of weights, it can be strictly shown that this approach is absolutely independent of the relative scales of the functions. Moreover, in order to ensure the convergence to the Global Pareto frontier, NBI approach has to be aligned with a global optimization method. Thus, the following paper suggests NBI-Simulated Annealing Simultaneous Perturbation method (NBI-SASP) as a new method for multiobjective optimization problems. The study shall test also the applicability of the NBI-SASP approach using different engineering multi-objective optimization problems and the findings shall be compared to a method of reference (NSGA). Results clearly demonstrate that the suggested method is more efficient when it comes to search ability and it provides a well distributed global Pareto Front.


2022 ◽  
Vol 19 (1) ◽  
pp. 473-512
Author(s):  
Rong Zheng ◽  
◽  
Heming Jia ◽  
Laith Abualigah ◽  
Qingxin Liu ◽  
...  

<abstract> <p>Arithmetic optimization algorithm (AOA) is a newly proposed meta-heuristic method which is inspired by the arithmetic operators in mathematics. However, the AOA has the weaknesses of insufficient exploration capability and is likely to fall into local optima. To improve the searching quality of original AOA, this paper presents an improved AOA (IAOA) integrated with proposed forced switching mechanism (FSM). The enhanced algorithm uses the random math optimizer probability (<italic>RMOP</italic>) to increase the population diversity for better global search. And then the forced switching mechanism is introduced into the AOA to help the search agents jump out of the local optima. When the search agents cannot find better positions within a certain number of iterations, the proposed FSM will make them conduct the exploratory behavior. Thus the cases of being trapped into local optima can be avoided effectively. The proposed IAOA is extensively tested by twenty-three classical benchmark functions and ten CEC2020 test functions and compared with the AOA and other well-known optimization algorithms. The experimental results show that the proposed algorithm is superior to other comparative algorithms on most of the test functions. Furthermore, the test results of two training problems of multi-layer perceptron (MLP) and three classical engineering design problems also indicate that the proposed IAOA is highly effective when dealing with real-world problems.</p> </abstract>


2022 ◽  
Vol 19 (3) ◽  
pp. 2240-2285
Author(s):  
Shihong Yin ◽  
◽  
Qifang Luo ◽  
Yanlian Du ◽  
Yongquan Zhou ◽  
...  

<abstract> <p>The slime mould algorithm (SMA) is a metaheuristic algorithm recently proposed, which is inspired by the oscillations of slime mould. Similar to other algorithms, SMA also has some disadvantages such as insufficient balance between exploration and exploitation, and easy to fall into local optimum. This paper, an improved SMA based on dominant swarm with adaptive t-distribution mutation (DTSMA) is proposed. In DTSMA, the dominant swarm is used improved the SMA's convergence speed, and the adaptive t-distribution mutation balances is used enhanced the exploration and exploitation ability. In addition, a new exploitation mechanism is hybridized to increase the diversity of populations. The performances of DTSMA are verified on CEC2019 functions and eight engineering design problems. The results show that for the CEC2019 functions, the DTSMA performances are best; for the engineering problems, DTSMA obtains better results than SMA and many algorithms in the literature when the constraints are satisfied. Furthermore, DTSMA is used to solve the inverse kinematics problem for a 7-DOF robot manipulator. The overall results show that DTSMA has a strong optimization ability. Therefore, the DTSMA is a promising metaheuristic optimization for global optimization problems.</p> </abstract>


Design Issues ◽  
2022 ◽  
Vol 38 (1) ◽  
pp. 29-38
Author(s):  
Rodrigo Najar

Abstract Based on a line of inquiry initiated by Dorst, this article explores Foucault's work as a philosophical inspiration for design research and practice. In terms of foucaultian problematization, notions of discourse and problematization— instead of notions of design problems— is an alternative way of dealing with design situations. It is argued that through the problematization of the discourses interwoven in a design project, the designer takes on a critical and political dimension of their own work. In this way, through the project, designers can have the option to critically choose between reinforcing discourses— in case of agreement with them, or subverting discourses— in case of disagreement.


2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Henna Lahti ◽  
Sini Davies

Artikkelissa tarkastellaan peruskoulussa toteutettua keksintöprojektia, jonka aikana oppilasryhmä suunnitteli ja toteutti älyvaatteen. Tutkimus on osa laajempaa tutkimushanketta, jossa koulua kehitetään keksivänä ja innovatiivisena yhteisönä. Tässä tutkimuksessa selvitetään, miten oppilasryhmän älyvaatteen suunnittelu- ja valmistusprosessi eteni ja mikä rooli opettajilla oli prosessin aikana. Tutkimusaineisto sisältää yhdeksän opetuskerran videoinnit. Videoaineistoon tehdyn makroanalyysin perusteella kartoitettiin kaikki ne opetustilanteet, joissa ilmeni vuorovaikutusta opettajan ja oppilaiden välillä. Teoriaohjaavaan analyysiin pohjautuen erotellaan ja tulkitaan vuoro-vaikutuksen erilaisia muotoja. Tutkimustuloksissa korostuu opettajan rooli sekä vaatteen yhteiskehittelyssä että oppilaiden toiminnan ohjaamisessa. Yhteiskehittelyn toteutuminen edellyttää riittäviä aika- ja taitoresursseja sekä motivaatiota ratkaista haastavia suunnitteluongelmia.   Towards co-creation: Observations of the teacher's role in the smart clothing project Abstract In this article we examined an invention project in a comprehensive school where a group of pupils designed and manufactured a set of smart clothing. The study is a part of a wider research project in which the school is being developed as an inventive and innovative community. In this study we analysed how the design and manufacturing processes of the smart clothing proceeded and what roles the teachers had during the process. The research data comprised video recordings of nine project sessions. All the teaching episodes containing interactions between the teacher and the pupils were surveyed as part of the macro level analysis. Based on the theory-driven analysis, the different forms of the interaction were identified and interpreted. In the results, the nature of the teacher's role emerged in both the co-creation of the smart clothing and in directing the pupils' actions. Successful co-creation requires enough time, skill, and motivation to solve challenging design problems.  Keywords: discovery learning, e-textiles, apparel design, smart clothing


Scilight ◽  
2021 ◽  
Vol 2021 (53) ◽  
pp. 531104
Author(s):  
Adam Liebendorfer

Author(s):  
Kseniia Prуkhod`ko

The purpose of the article is to identify trends and patterns of organization of the artistic space of the modern interior of the coworking center, as well as the creation of scientifically sound methods that argue appropriate ways to solve design problems in the field of aesthetics of the XXI century. Research methodology. The theoretical, structural, philosophical, and aesthetic method is applied; method of artistic and stylistic analysis to identify features of the interior design of Kyiv coworking centers; structural-semiotic method, which determines the artistic and figurative content in the interior design of modern coworking space. Scientific novelty. The main theoretical concepts that became the basis for defining the interior of the coworking center as a unique type of artistic space are considered; -an analysis of the basic spatial concepts developed by famous philosophers who understand it as an artistic space; identified and analyzed the features of artistic solutions in the process of designing working interiors of domestic coworking centers; the factors of influence on the artistic and figurative decision of the interior of the coworking space are determined. Conclusions. Based on the analysis of existing spatial concepts, it is determined that the space of a modern coworking center can be considered one of the types of artistic space and identify certain semantic categories (according to Gabrichevsky, Spengler, Heidegger, etc.). Characteristic techniques and means of artistic expression of modern interiors of coworking centers, which are related to the understanding of space as an artistic concept, reflect the idea of ​​its polyphony and determine the artistic and aesthetic principles of domestic interior coworking center in the first decades of the XXI century. The study found that in the interiors of modern Kyiv coworking spaces ("Magazine", "Platform" (Leonardo Business Center and Art Factory), "New Work Labs", "Kooperativ", "Hub 4.0", "Creative Quarter", "LIFT99 Kyiv Hub", "Anthill Space", "Lofti Space", "Creative States", "Toloka", "Garden - Smartwork") implemented Eurasian and European types of organization of artistic space. Keywords: coworking center, interior design, artistic space, subject-spatial environment.


Sign in / Sign up

Export Citation Format

Share Document