A revised FMEA with application to a blow moulding process

2016 ◽  
Vol 33 (7) ◽  
pp. 900-919 ◽  
Author(s):  
Francesco Lolli ◽  
Rita Gamberini ◽  
Bianca Rimini ◽  
Francesco Pulga
Keyword(s):  
Clustering Algorithm ◽  
Fuzzy Theory ◽  
Mathematical Formulation ◽  
The Novel ◽  
Content Type ◽  
Moulding Process ◽  
Blow Moulding ◽  
Novel Approach ◽  
Operating Environments

Purpose – The purpose of this paper is to present a modified failure mode and effects analysis (FMEA) in order to make the assignment of the scores for the occurrence factor more robust, and to link the FMEA chart directly to the maintenance activities. Design/methodology/approach – A well-known clustering algorithm (i.e. K-means), along with a normalisation approach, are applied and compared for the assignment of the occurrence scores. Subsequently, the relationship between failures and maintenance operations is made explicit by a correlation matrix. Finally, the K-means algorithm is applied to the maintenance operations again in order to sort them into priority classes. Findings – It is found that this revised FMEA approach improves the standard one due to its more rigorous mathematical formulation and lean applicability in real operating environments. Research limitations/implications – The novel approach may be improved by a deeper statistical analysis and/or applying the fuzzy theory. Practical implications – A real case study is introduced in order to show the applicability of this approach to the quality control of a blow moulding process. It is found that this approach reveals a high potentiality for dealing with real issues. Originality/value – The paper provides a further step towards bridging the gap between theory and practical application of the FMEA approach.

A novel product recommendation model consolidating price, trust and online reviews

Kybernetes ◽  
2019 ◽  
Vol 48 (6) ◽  
pp. 1355-1372 ◽  
Author(s):  
Ying Huang ◽  
Nu-nu Wang ◽  
Hongyu Zhang ◽  
Jianqiang Wang
Keyword(s):  
Search Engines ◽  
Distance Measure ◽  
Fuzzy Theory ◽  
Online Reviews ◽  
Purchasing Decisions ◽  
Neutrosophic Sets ◽  
Content Type ◽  
Product Recommendation ◽  
Proposed Model

Purpose The purpose of this paper is to propose a model for product recommendation to improve the accuracy of recommendation based on the current search engines used in e-commerce platforms like Tmall.com. Design/methodology/approach First, the proposed model comprehensively considers price, trust and online reviews, which all represent critical factors in consumers’ purchasing decisions. Second, the model introduces the quantization methods for these criteria incorporating fuzzy theory. Third, the model uses a distance measure between two single valued neutrosophic sets based on the prioritized average operator to consolidate the influences of positive, neutral and negative comments. Finally, the model uses multi-criteria decision-making methods to integrate the influences of price, trust and online reviews on purchasing decisions to generate recommendations. Findings To demonstrate the feasibility and efficiency of the proposed model, a case study is conducted based on Tmall.com. The results of case study indicate that the recommendations of our model perform better than those of current search engines of Tmall.com. The proposed model can significantly improve the accuracy of product recommendations based on search engines. Originality/value The product recommendation method can meet the critical challenge from the search engines on e-commerce platforms. In addition, the proposed method could be used in practice to develop a new application for e-commerce platforms.

University budgeting: internal versus external transparency

2020 ◽  
Vol 17 (4) ◽  
pp. 589-617
Author(s):  
Maria C. Conesa Carril ◽  
Nieves Gómez Aguilar ◽  
Manuel Larrán Jorge
Keyword(s):  
Key Management ◽  
Model Development ◽  
Management Tool ◽  
Budget Process ◽  
The Novel ◽  
Content Type ◽  
Documentary Analysis ◽  
The University ◽  
Budgeting Process

Purpose The analysis intends to clarify whether higher education institutions place as much value on internal transparency as on external transparency. This study aims to analyze the university budgeting process as a reflection of internal transparency. It also aims to identify the weaknesses of the budgeting process regarding transparency in order to improve decision-making. Design/methodology/approach A case study that applies mixed methods – documentary analysis, observations and interviews – has been conducted. To study internal transparency, the model of three levels of transparency of Biondi and Lapsley (2014) has been applied to the budgeting process of a university. Then, the results have been compared to the external transparency of this institution. Findings While external transparency is achieved, internal transparency in the budgeting process is far from optimal in the case of study. An improvement in transparency of the budget process can promote the engagement of stakeholders in the process and achieve better governance. Research limitations/implications The general inductive approach is not as strong as other approaches in the area of theory or model development. However, it does provide a simple approach for deriving findings linked to this research’s questions. Practical implications Trust issues and external accountability appear to be more relevant than internal transparency for universities. However, improving the three levels of transparency along the budgeting process could motivate collegiate members to reinforce accountability, as it requires them to effectively communicate their actions and decisions to their represented. Originality/value This paper seeks to situate transparency as an attribute of university governance, contributing to the scarce literature on transparency, internal and external, in the university. The study compares the approach of this university to external transparency – which relates to accountability – with internal transparency – a concept that links to corporate governance. This study uses the novel lens of Biondi and Lapsley model (2014) to study internal transparency, focussing on university budgeting as a key management tool.

Edge controller – a small UAVs distributed avionics paradigm

2019 ◽  
Vol 92 (2) ◽  
pp. 229-236
Author(s):  
Svetoslav Zabunov ◽  
Roumen Nedkov
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Design Methodology ◽  
The Novel ◽  
Functional Requirements ◽  
New Paradigm ◽  
Content Type ◽  
Novel Approach ◽  
Novel Concept ◽  
Practical Implications ◽  
Structure And Design

Purpose This paper aims to reveal the authors’ conceptual and experimental work on an innovative avionics paradigm for small unmanned aerial vehicles (UAVs). Design/methodology/approach This novel approach stipulates that, rather than being centralized at the autopilot, control of avionics devices is instead distributed among controllers – spread over the airframe span, in response to avionics devices’ natural location requirements. The latter controllers are herein referred to as edge controllers by the first author. Findings The edge controller manifests increased efficiency in a number of functions, some of which are unburdened from the autopilot. The edge controller establishes a new paradigm of structure and design of small UAVs avionics such that any functionality related to the periphery of the airframe is implemented in the controller. Research limitations/implications The research encompasses a workbench prototype testing on a breadboard, as the presented idea is a novel concept. Further, another test has been conducted with four controllers mounted on a quadcopter; results from the vertical attitude sustenance are disclosed herein. Practical implications The motivation behind developing this paradigm was the need to position certain avionics devices at different locations on the airframe. Due to their inherent functional requirements, most of these devices have hitherto been placed at the periphery of the aircraft construction. Originality/value The current paper describes the novel avionics paradigm, compares it to the standard approach and further reveals two experimental setups with testing results.

scholarly journals Identification and Immunological Characterization of Three Potential Vaccinogens against Cryptosporidium Species

2011 ◽  
Vol 18 (11) ◽  
pp. 1796-1802 ◽  
Author(s):  
Patricio A. Manque ◽  
Fernando Tenjo ◽  
Ute Woehlbier ◽  
Ana M. Lara ◽  
Myrna G. Serrano ◽  
...  
Keyword(s):  
The Novel ◽  
Cryptosporidium Hominis ◽  
Content Type ◽  
Vaccine Candidates ◽  
Novel Approach ◽  
Intellectual Abilities ◽  
Significant Impairment ◽  
Life Threatening ◽  
Potential Vaccine ◽  
Cellular Immune

ABSTRACTCryptosporidiosis is a ubiquitous infectious disease, caused by the protozoan parasitesCryptosporidium hominisandCryptosporidium parvum, leading to acute, persistent, and chronic diarrhea with life-threatening consequences in immunocompromised individuals. In developing countries, cryptosporidiosis in early childhood has been associated with subsequent significant impairment in growth, physical fitness, and intellectual abilities. Currently, vaccines are unavailable and chemotherapeutics are toxic and impractical, and agents for immunoprophylaxis or treatment of cryptosporidiosis are a high priority. Availability of the genome sequences forC. hominisandC. parvumprovides new opportunities to procure and examine novel vaccine candidates. Using the novel approach of “reverse vaccinology,” we identified several new potential vaccine candidates. Three of these antigens—Cp15, profilin, and aCryptosporidiumapyrase—were delivered in heterologous prime-boost regimens as fusions with cytolysin A (ClyA) in aSalmonellalive vaccine vector and as purified recombinant antigens, and they were found to induce specific and potent humoral and cellular immune responses, suggesting their potential as new vaccinogens againstCryptosporidiuminfection.

scholarly journals Forensic triage of email network narratives through visualisation

2014 ◽  
Vol 22 (4) ◽  
pp. 358-370 ◽  
Author(s):  
John Haggerty ◽  
Sheryllynne Haggerty ◽  
Mark Taylor
Keyword(s):  
Qualitative Data ◽  
Data Sets ◽  
Content Type ◽  
Electronic Evidence ◽  
Relevant Evidence ◽  
Novel Approach ◽  
Potential Sources ◽  
Digital Investigation ◽  
Tools And Techniques

Purpose – The purpose of this paper is to propose a novel approach that automates the visualisation of both quantitative data (the network) and qualitative data (the content) within emails to aid the triage of evidence during a forensics investigation. Email remains a key source of evidence during a digital investigation, and a forensics examiner may be required to triage and analyse large email data sets for evidence. Current practice utilises tools and techniques that require a manual trawl through such data, which is a time-consuming process. Design/methodology/approach – This paper applies the methodology to the Enron email corpus, and in particular one key suspect, to demonstrate the applicability of the approach. Resulting visualisations of network narratives are discussed to show how network narratives may be used to triage large evidence data sets. Findings – Using the network narrative approach enables a forensics examiner to quickly identify relevant evidence within large email data sets. Within the case study presented in this paper, the results identify key witnesses, other actors of interest to the investigation and potential sources of further evidence. Practical implications – The implications are for digital forensics examiners or for security investigations that involve email data. The approach posited in this paper demonstrates the triage and visualisation of email network narratives to aid an investigation and identify potential sources of electronic evidence. Originality/value – There are a number of network visualisation applications in use. However, none of these enable the combined visualisation of quantitative and qualitative data to provide a view of what the actors are discussing and how this shapes the network in email data sets.

scholarly journals From a Pareto Front to Pareto Regions: A Novel Standpoint for Multiobjective Optimization

Mathematics ◽  
2021 ◽  
Vol 9 (24) ◽  
pp. 3152
Author(s):  
Carine M. Rebello ◽  
Márcio A. F. Martins ◽  
Daniel D. Santana ◽  
Alírio E. Rodrigues ◽  
José M. Loureiro ◽  
...  
Keyword(s):  
Multiobjective Optimization ◽  
Pareto Front ◽  
Optimization Problems ◽  
The Novel ◽  
Particle Swarm Optimizer ◽  
Novel Approach ◽  
Multiobjective Optimization Problems ◽  
Pressure Swing ◽  
Novel Concept

This work presents a novel approach for multiobjective optimization problems, extending the concept of a Pareto front to a new idea of the Pareto region. This new concept provides all the points beyond the Pareto front, leading to the same optimal condition with statistical assurance. This region is built using a Fisher–Snedecor test over an augmented Lagragian function, for which deductions are proposed here. This test is meant to provide an approximated depiction of the feasible operation region while using meta-heuristic optimization results to extract this information. To do so, a Constrained Sliding Particle Swarm Optimizer (CSPSO) was applied to solve a series of four benchmarks and a case study. The proposed test analyzed the CSPSO results, and the novel Pareto regions were estimated. Over this Pareto region, a clustering strategy was also developed and applied to define sub-regions that prioritize one of the objectives and an intermediary region that provides a balance between objectives. This is a valuable tool in the context of process optimization, aiming at assertive decision-making purposes. As this is a novel concept, the only way to compare it was to draw the entire regions of the benchmark functions and compare them with the methodology result. The benchmark results demonstrated that the proposed method could efficiently portray the Pareto regions. Then, the optimization of a Pressure Swing Adsorption unit was performed using the proposed approach to provide a practical application of the methodology developed here. It was possible to build the Pareto region and its respective sub-regions, where each process performance parameter is prioritized. The results demonstrated that this methodology could be helpful in processes optimization and operation. It provides more flexibility and more profound knowledge of the system under evaluation.

An econometric analysis of the factors affecting consumers' bread waste and consumption behaviour: a case study of Isparta province, Turkey

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Deniz Sarica ◽  
Vecdi Demircan ◽  
Aybike Erturk ◽  
Nilay Arslantas
Keyword(s):  
Driving Forces ◽  
Econometric Analysis ◽  
The Novel ◽  
Monthly Income ◽  
Key Factors ◽  
Content Type ◽  
Factors Affecting ◽  
Consumption Behaviour ◽  
Underlying Causes

PurposeThe purpose of the research is to identify the various factors affecting bread wastage and bread consumption of consumers in Isparta, Turkey.Design/methodology/approachThis study uses the categorical regression (CATREG) model to estimate the driving forces of bread waste and consumption. The study concentrates on data obtained from 384 respondents speaking for the same number of households placed in the province of Isparta in Turkey.FindingsThe results indicate that both models are statistically significant at the 1% level. Parents' profession, storage method, type of bread consumed, daily bread expenditure, monthly income and the idea of “bread is cheap” are the most important variables affecting bread wastage. Regarding bread consumption, parents' profession, fathers' education level, monthly income, inadequate control in bakeries, household size and the idea of “bread makes people fat” are found to play significant roles.Practical implicationsThe results could be helpful to develop influential policies on healthy eating and aiming plans to reduce bread consumption to healthy levels and prevent bread waste.Social implicationsThis research contributes to knowledge regarding the underlying causes of the bread consumption and wastage of Turkish consumers in the light of the data analysis for Isparta province.Originality/valueThis paper contains unique and original understandings concerning bread consumption and wastage attitudes and determinants for consumers from Isparta, Turkey. The novel findings of this research have conduced to a better understanding of the key factors that affect bread consumption and waste. The paper also applies an econometric analysis using a CATREG model to analyse the factors influencing consumers' bread waste and consumption behaviour in Isparta province, Turkey.

A novel technique for evaluating and ranking green airlines: benchmarking-base comparison

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Saleh Fahed Alkhatib ◽  
Yazan Khalid Abed-Allah Migdadi
Keyword(s):  
Decision Making ◽  
Content Type ◽  
Cause And Effect ◽  
Green Strength ◽  
Novel Approach ◽  
Global And Local ◽  
The Impact ◽  
Hierarchy Process ◽  
Ranking Technique

PurposeThis study aims to evaluate and rank green airlines by proposing a novel approach that integrates different multi-criteria decision-making (MCDM) techniques.Design/methodology/approachThree MCDM techniques were adopted: Decision-Making Trial and Evaluation Laboratory (DEMATEL) addressed the impact relationships between Airline Green Operations (AGOs) and classified them into cause and effect; analytical hierarchy process (AHP) prioritized these actions and found their global and local weights; and Techniques to Order Preferences by Similarity to Ideal Solution (TOPSIS) used the weighted actions to evaluate and rank 20 green airlines as a case study.FindingsDEMATEL outcomes provide the first AGOs impact relationships map (IRM), classify AGOs into cause and effect actions and provide better understanding how these green operations affect each other. According to the AHP outcomes, “GHG1and fuel” and “GHG2 and Energy” were the most important set of actions, respectively. Finally, a new evaluation and ranking for 20 green airlines has been presented.Practical implicationsThe AGOs IRM provides a better understanding of the airline green operations and how they affect each other. The new evaluation and ranking technique helps airlines to identify their green strength and weakness areas and supports their sustainability processes.Originality/valueThe increasing importance of AGOs evaluation and analysis highlights the importance of green airlines studies like this one. This study analyzed AGOs, their impact relationships, developed their IRM and provided a new worldwide green airline benchmarking base.

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