scholarly journals Multicriteria Decision Making Methods in Engineering Design: An Application on Medical Devices

Author(s):  
Cristina Renzi ◽  
Francesco Leali

AbstractThe design of medical devices is challenging, due to strict geometry specifications and criteria belonging to several disciplines. The aim of this paper is to provide a design methodology which seems to lack in the literature of design of biomedical devices. In particular, the case study proposed in this paper concerns with the design of Bone-Biopsy (BB) needle devices. Following the design process of Pahl and Beitz, a functional analysis is carried out, to point out the interfaces between parts of existing BB needles. A morphology matrix is used to generate alternatives for the cannula holder, the core part of the product. Generated alternatives have been ranked and scored by means of the Pugh’s Controlled Convergence method according to the decision makers' opinions. In this work, the design peculiarities related to the BB needles which have been pointed out could be extended for guiding the design of other biomedical devices.

2020 ◽  
Vol 12 (11) ◽  
pp. 4649
Author(s):  
Dongxiao Niu ◽  
Hao Zhen ◽  
Min Yu ◽  
Keke Wang ◽  
Lijie Sun ◽  
...  

With the deteriorating ecological environment and increasing energy consumption, developing clean and renewable energy sources has become a key measure to solve environmental problems and energy shortages. The multicriteria decision-making (MCDM) technique is widely used in the assessment of renewable energy alternatives (REA) to determine the most sustainable and appropriate option for a country or region. Classic REA ranking is conducted in a deterministic environment through MCDM techniques. However, with the increasing complexity of environmental and energy issues, the REA ranking method is unsuitable for use in today’s China. Therefore, in this paper, a fuzzy MCDM technique based on the interval-valued hesitant fuzzy elimination and choice expressing reality (IVHF-ELECTRE II) method, taking into account the uncertainty and ambiguity of the information, is proposed for REA ranking. A case study in China is conducted to elaborate on the rationality and feasibility of the proposed framework. According to the ranking results, hydro is determined as the best REA in China, followed by wind energy, solar photovoltaic, geothermal, biomass energy, and solar thermal. This research provides a feasible method and insightful reference for national decision-makers to utilize when evaluating the REA and establishing a macroplanning policy for renewable energy under an uncertain environment.


2021 ◽  
Vol 14 (2) ◽  
pp. 253-272
Author(s):  
Jana Rozmarinová ◽  
Barbora Říhová

Abstract Health technology assessment (HTA) has become the systematic evaluation of health technology’s properties and effects that inform decision-makers. The implementation and expansion of HTA can contribute to slowing down burgeoning healthcare costs. In the Czech Republic, elements of HTA are quite standardly used in pharmacoeconomics, but questions arise on the use of HTA of medical devices. The theoretical framework developed is followed by a case study of the Czech Republic to assess whether the use of HTA of medical devices in the Czech Republic is implemented. This study uses publicly available resources, mainly public health acts and public notices related to HTA. We examined the institutionalisation of HTA for medical devices (HTA applied only at a selected area of medical devices) in the Czech Republic and compared Czech’s HTA principles of medical devices to the HTA Core Model. It was found that the HTA process used for medical devices is very limited in the Czech Republic. Our data show that HTA was officially established, but in reality, the medical devices have not been assessed following HTA principles.


2015 ◽  
Vol 77 (18) ◽  
Author(s):  
Bokolo Anthony Jnr ◽  
Noraini Che Pa ◽  
Teh Noranis Mohd Aris ◽  
Rozi Nor Haizan Nor ◽  
Yusmadi Yah Jusoh

Risk mitigation has gained relevance during the last years and has helped to solve risk and improve decision making among decision makers in IT Governance. However, there is still a increasing need of developing innovative tools that can help IT Practitioners to solve risk in IT Governance. Existing risk mitigation approaches or tools lacks need for adequate data which is very important in mitigating risk and there is difficulty of mitigating risk generally in IT Governance. This paper present an autonomic computing model developed to mitigate risk; mainly operational and technical in IT Governance by measuring the risk and providing risk report to the management and staffs in organisations. Autonomic Computing Systems (ACSs) are systems that manage themselves. The core of Autonomic Computing Systems are type of agent with advanced capacities for reasoning to measure the risk probability and risk impact based on available data in the knowledge base or previous experiences.  The Autonomic Computing Systems provide risk advice aimed at providing decision support to management hence mitigating risk in IT Governance. Data was collected via purposely sampling using interview by case study among 13 Malaysia universities. The data was analyzed by Nvivo to get an insight on the current risk mitigation practices and process, after which a risk mitigation model has been developed using autonomic agents.


DYNA ◽  
2015 ◽  
Vol 82 (191) ◽  
pp. 127-136 ◽  
Author(s):  
Jorge Iván Romero-Gélvez ◽  
Félix Antonio Cortes-Aldana ◽  
Giovanni Franco-Sepúlveda

The purpose of this paper is to present a quantitative approach to the selection of the mining extraction method by developing a methodological problem of discrete multicriteria decision making (MCDM), this approach seeks to support the process of planning and mine design. Select the extractive method is one of the problems of Discrete Multicriteria Decision (MCDM) where decision-makers had problems in assigning weight to each criterion. To solve this problem, this article suggests the ENTROPY method. This paper wants to handle the subjectivity inherent to this problem by using the VIKOR method, which yields results in a compromise alternative. The methodology proposed in this article applies in coal deposit located in the western side of Cerro Tasajero in Norte de Santander, Colombia


2016 ◽  
Vol 69 (3) ◽  
Author(s):  
Elin Fredsted

AbstractThis paper presents a qualitative linguistic analysis of data from bi- and multilingual persons who grew up in the German-Danish border region. The present paper will present language practices on social network sites and compare them to informal oral data from the same groups of bi- and multilingual friends. The core part of this article presents a subset of the written and oral data, i. e. a case study of two micro-groups of on- and off-line friends whose linguistic practices index a specific stand towards the macro community (two autochthone national minority groups) to which the speakers/writers belong.


2012 ◽  
Vol 6 (1-3) ◽  
pp. 309-329
Author(s):  
Claudia V. Camp

I propose that the notion of possession adds an important ideological nuance to the analyses of iconic books set forth by Martin Marty (1980) and, more recently, by James Watts (2006). Using the early second century BCE book of Sirach as a case study, I tease out some of the symbolic dynamics through which the Bible achieved iconic status in the first place, that is, the conditions in which significance was attached to its material, finite shape. For Ben Sira, this symbolism was deeply tied to his honor-shame ethos in which women posed a threat to the honor of his eternal name, a threat resolved through his possession of Torah figured as the Woman Wisdom. What my analysis suggests is that the conflicted perceptions of gender in Ben Sira’s text is fundamental to his appropriation of, and attempt to produce, authoritative religious literature, and thus essential for understanding his relationship to this emerging canon. Torah, conceived as female, was the core of this canon, but Ben Sira adds his own literary production to this female “body” (or feminized corpus, if you will), becoming the voice of both through the experience of perfect possession.


2013 ◽  
Vol 21 (2) ◽  
pp. 153-162
Author(s):  
Wang Guohong ◽  
Wang Xiaoping ◽  
Zhang Weikang ◽  
Li He ◽  
Du Lianhai ◽  
...  

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