Quality improvement through ergonomics intervention at chemical plant

Facilities ◽  
2019 ◽  
Vol 37 (5/6) ◽  
pp. 266-279 ◽  
Author(s):  
Laith A. Hadidi ◽  
Ahmet Kolus ◽  
Mohammed AlKhamis
Keyword(s):  
Quality Improvement ◽  
Design Methodology ◽  
Production Quality ◽  
Manufacturing Plant ◽  
Alert System ◽  
Content Type ◽  
Chemical Manufacturing ◽  
Inspection Process ◽  
Plant Shutdown

Purpose This paper aims to focus on ergonomics intervention and quality implementation at a chemical manufacturing plant in Saudi Arabia that is prone to increased number of quality defects and shutdowns. Design/methodology/approach The paper applies the quality improvement through ergonomics (QUITE) methodology as a solution to improve the level of plants quality and reliability. The QUITE implementation relies on a great amount of human participation and constant check of quality results. The study is conducted to solve two main problems in the plant under study, namely, degradation in the products quality and unsolved frequent shutdowns in the production line Findings The study findings suggested to automate the inspection process through “User Alert” system to stimulate the operator attention who triggers a corrective action to avoid any possible process upset of plant shutdown. The implementation increased productivity from 280 to 310 ton; quality conformance from 91.7 to 96.80 per cent; and reduced shutdown from 1.26 days to almost zero downtime. Originality/value The work shed the light on the effect of ergonomics on the quality of finished products. Usually, ergonomics is related to the work environment. However, ergonomics initiatives can spearhead improvement in production quality.

scholarly journals Quality identification methodology applied to wall-elements based on modal analysis

2015 ◽  
Vol 11 (4) ◽  
pp. 507-516 ◽  
Author(s):  
Mariusz Zóltowski ◽  
Ronald M. Martinod
Keyword(s):  
Quality Control ◽  
Modal Analysis ◽  
Mass Production ◽  
Design Methodology ◽  
Production Quality ◽  
State Assessment ◽  
Critical Levels ◽  
Content Type ◽  
Current Mass

Purpose – The recommendation of structural standards, e.g. PN-B-03002, shows a need to control the production quality of wall-elements; the quality control demands suitable guidelines to fit the requirements of the current mass-production of the wall-elements, then, the structural standard recognizes the need of improving the methods to identify the real elements quality. The paper aims to discuss these issues. Design/methodology/approach – The proposed inspection methodology corresponds to assessment models that combine the numerical and symptomatic models to evaluate the critical levels of wall-elements, based on non-intrusive tests through the measurement of a set of signals, using the Experimental Modal Analysis (EMA)-based techniques. Findings – The presented work is developed with an approach that applies advanced calculating techniques used for the structural analysis in civil engineering focused on the technical state assessment. Originality/value – The paper proposes a diagnostic methodology that can be added to the current regulations and standards based on EMA techniques.

Quality improvement of optically translucent parts manufactured from LS and SL

2016 ◽  
Vol 22 (1) ◽  
pp. 87-96 ◽  
Author(s):  
Mengqi Yuan ◽  
David Bourell
Keyword(s):  
Optical Properties ◽  
Quality Improvement ◽  
Layer Thickness ◽  
Design Methodology ◽  
Plate Thickness ◽  
White Light Source ◽  
Content Type ◽  
New Material ◽  
And Performance

Purpose – The purpose of this paper is to improve the quality of additive manufactured optically translucent parts by investigating the manufacturing issues, analyzing lithophane production criteria and identifying the best translucent material and additive manufacturing (AM) technology. Design/methodology/approach – Figured lithophanes were laser sintered on a 3D Systems SinterStation® HiQ™ with varying layer thickness and plate thickness. Laser sintered (LS) polyamide (PA) 12 blanks were cyanoacrylate infiltrated and polished. Optical properties and performance were compared with the original LS blanks. Lithophanes and blanks were manufactured using 3D systems stereo lithography apparatus (SLA)® Viper ™si2 station, and optical properties and lithophane performance were compared with the LS specimens. Findings – When building in the XY plane, it is optimal to sinter with the minimum layer thickness (0.076 mm) and maximum plate thickness (5 mm). Cyanoacrylate infiltration and polishing assists in reducing the LS PA 12 plate surface roughness, but polishing does not affect the lithophane performance. The best LS candidate should have an absorption coefficient of 0.5/mm using a white light source. Improved resolution but reduced contrast was observed on stereolithography (SL) specimens compared to LS parts. Research limitations/implications – Transmittance experiments were performed on three SL parts which was not sufficient for optical property calculation. Limited literature was found for new material exploration. Originality/value – It is the first effort to study systematically quality improvement issues of LS PA optically translucent parts. A comparison is made of optical performance between parts made using LS and SL.

Electronic warp-break detection mechanism for manual looms

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Alex Osei Afriyie ◽  
Ebenezer Kofi Howard ◽  
Benjamin Kwablah Asinyo ◽  
William Badoe ◽  
Raphael Kanyire Seidu ◽  
...  
Keyword(s):  
Design Methodology ◽  
Plate Thickness ◽  
Alert System ◽  
Detection Mechanism ◽  
Content Type ◽  
Testing Procedures ◽  
Electronic Circuitry ◽  
Steel Bars ◽  
Test Outcomes

Purpose The purpose of this study is to develop a system that detects warp breakage in manual looms using simple mechanisms combined with electronic circuitry. Design/methodology/approach This study used the universal design methodology model where results from observations and interviews aided in designing the appropriate blueprints for the mechanism. Findings Testing procedures revealed that the conductivity of steel bars coupled with the weight of the droppers affected the efficiency of the mechanism. Additionally, the weight of the drop wires influenced the rising of the warp threads during shedding. Considering this, a plate thickness of 0.06 mm was ideal for the droppers which did not affect warp shedding. Test outcomes at the weaving shed proved the workability of the mechanism for timely or prompt repair of a broken warp by weavers that ensured fabric quality. Originality/value The issue of warp breaks remains a critical problem at weaving on manual looms which influence the quality of fabrics. These looms are used by craftsmen in producing interesting fabrics for the market of which they depend on for their living. Premise on this, a two-way (light + sound) alert system was developed to assist weavers to effectively locate and repair broken yarns. Additionally, weavers with special needs (blind people) would be notified on a warp break for immediate repair from someone. This would limit the unnecessary challenges associated with broken warp yarns during weaving.

Qualitative generalising in accounting research: concepts and strategies

2016 ◽  
Vol 29 (6) ◽  
pp. 1100-1131 ◽  
Author(s):  
Lee D. Parker ◽  
Deryl Northcott
Keyword(s):  
Design Methodology ◽  
Research Literature ◽  
Key Factors ◽  
General Applicability ◽  
Information Systems Management ◽  
Content Type ◽  
Accounting Research ◽  
Research Findings ◽  
Quality Of Research

Purpose – The purpose of this paper is to identify and articulate concepts and approaches to qualitative generalisation that will offer qualitative accounting researchers avenues for enhancing and justifying the general applicability of their research findings and conclusions. Design/methodology/approach – The study and arguments draw from multidisciplinary approaches to this issue. The analysis and theorising is based on published qualitative research literatures from the fields of education, health sciences, sociology, information systems, management and marketing, as well as accounting. Findings – The paper develops two overarching generalisation concepts for application by qualitative accounting researchers. These are built upon a number of qualitative generalisation concepts that have emerged in the multidisciplinary literatures. It also articulates strategies for enhancing the generalisability of qualitative accounting research findings. Research limitations/implications – The paper provides qualitative accounting researchers with understandings, arguments and justifications for the generalisability of their research and the related potential for wider accounting and societal contributions. It also articulates the key factors that impact on the quality of research generalisation that qualitative researchers can offer. Originality/value – This paper presents the most comprehensively sourced and developed approach to the concepts, strategies and unique deliverables of qualitative generalising hitherto available in the accounting research literature.

scholarly journals Who guarantees the quality of the quality assurance agencies? The exploration of the establishment and growth of the Asia-Pacific Quality Register (APQR)

2017 ◽  
Vol 11 (2) ◽  
pp. 58-67 ◽  
Author(s):  
Jianxin Zhang ◽  
Jagannath Patil
Keyword(s):  
Higher Education ◽  
Quality Assurance ◽  
Design Methodology ◽  
Asia Pacific ◽  
Qualitative Assessment ◽  
Future Prospects ◽  
Asia Pacific Region ◽  
Content Type ◽  
Quality Register

Purpose After the “quantity era,” today higher education has entered into the “quality era” and as “the gate keepers of quality,” quality assurance agencies (QAAs) are playing more and more irreplaceable important roles and their social status are becoming more and more prominent. However, how to guarantee the quality of the QAAs? Who can review the QAAs? The purpose of this paper is based exploration of these questions. Design/methodology/approach Following the founding of the European Quality Assurance Register (EQAR) for Higher Education, the Asia Pacific Quality Register (APQR) became the second in the international quality assurance (QA) networks to implement QA register, in 2015 with initiative of Asia-Pacific Quality Network. Findings This paper first retrospects the history and process of APQR, and subsequently the implementation of APQR is described in detail from the two aspects of the criteria and the procedure, and at the end, the paper concludes with a summary of the three characteristics of this first formal implement of APQR: APQR is an international register open to all the QAAs; APQR emphasizes characteristics evaluation of diversity; and APQR highlights the combination of quantitative assessment and qualitative assessment. Originality/value Today on the international stage of QA, APQR has emerged as “the watchman of quality” in the Asia-Pacific region as counterpart of EQAR in Europe. How far away does such newly emerging form of guaranteeing the QAAs’ quality go forward, what is its future prospects and other concerning issues, are some of the question that need enthusiastic attention and contribution.

The prediction of the cyclic mechanical behavior of stainless steel 304L at room temperature

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Hala Messai ◽  
Salim Meziani ◽  
Athmane Fouathia
Keyword(s):  
Stainless Steel ◽  
Design Methodology ◽  
Room Temperature ◽  
Type Model ◽  
Good Prediction ◽  
304L Stainless Steel ◽  
Content Type ◽  
The Third ◽  
Chaboche Model

Purpose The purpose of this paper is to highlight the performance of the Chaboche model in relation to the database identification, tests with imposed deformations were conducted at room temperature on 304L stainless steel specimens. Design/methodology/approach The first two tests were performed in tension-compression between ±0.005 and ±0.01; in the third test, each cycle is composed of the combination of a compression tensile cycle between ±0.01 followed by a torsion cycle between ±0.01723 (non-proportional path), and the last, uniaxial ratcheting test with a mean stress between 250 MPa and −150 MPa. Several identifications of a Chaboche-type model were then performed by considering databases composed of one or more of the cited tests. On the basis of these identifications, the simulations of a large number of ratchet tests in particular were carried out. Findings The results present the effect of the optimized parameters on the prediction of the behavior of materials which is reported in the graphs, Optimizations 1 and 2 of first and second tests and Optimization 4 of the third test giving a good prediction of the increasing/decreasing pre-deformation amplitude. Originality/value The quality of the model's predictions strongly depends on the richness of the database used for the identification of the parameters.

The effect of export tax rebates on product quality: evidence from China's agricultural product processing industry

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yue Liang ◽  
Jingqi Dang ◽  
Shuai Chen
Keyword(s):  
Quality Improvement ◽  
Product Quality ◽  
Policy Implications ◽  
Medium Size ◽  
Agricultural Product ◽  
Firm Innovation ◽  
Processing Industry ◽  
Content Type ◽  
Export Tax

PurposeThis study aims to establish the linkage among export tax rebate (ETR), firm innovation and product quality of Chinese agricultural product processing industry (APPI), so that more targeted policy implications can be discussed.Design/methodology/approachUsing highly disaggregated firm-product-destination-level data through 2001 to 2013 of Chinese APPI, this study employs a two-way fixed effects specification to establish the linkage between ETR and product quality, while the mediational model is adopted to examine potential mechanisms.FindingsBaseline estimates show that a 1% increase in ETR rate leads to a significant increase in the product quality of APPI by 0.12% on the whole. However, there is a nonlinear, inverse-U shaped relationship between ETR and product quality, and the optimal inflection point occurs when ERT rate equals 0.15. Mechanism analyses show that firm innovation is an important impact channel, which explains 9.8% of quality improvement induced by raising ETR. Further heterogeneous analyses reveal both the total effects of ETR on product quality and the mediation effects of innovation are dominated by young SMEs (small and medium-size enterprises).Practical implicationsAuthorities can promote the innovation and then product quality improvement of young SMEs by moderately increasing ETR rate. To ensure ETR more effective in improving quality, it is necessary for the government to encourage innovation. Authorities can reduce the risk of innovation failure for low-tech firms by increasing R&D subsidies, while ensuring innovation returns for high-tech firms in combination with stronger intellectual property protection.Originality/valueFirst, this is one of the earlier studies to explore the relationship between ETR and product quality specifically for Chinese APPI. Second, we show firm innovation as an important mediator so that policies aim at raising ETR rates are eventually beneficial to product quality. Third, using the highly disaggregated data, we allow ETR rate to vary across different products, which is an improvement in the accuracy of previous literature. Finally, our research provides additional empirical evidence for revealing the micro-mechanism of ETR affecting firm behaviors.

Who is a “Senior”? Looking for a definition in the healthcare system

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Monica Consolandi
Keyword(s):  
Quality Of Life ◽  
Health Care ◽  
Healthcare System ◽  
Health Care System ◽  
Design Methodology ◽  
Social Role ◽  
Content Type ◽  
The Core ◽  
Starting Point

Purpose Seniors are nowadays at the core of important reflections to understand both how to ensure them a proper quality of life and better recognize their social role, providing them services and proper health care to value them as persons and resources. This paper aims to find a through definition about who is a senior, in the author’s opinion the starting point to help them flourishing. Design/methodology/approach As an example of definitions, an online dictionary and two geriatric text-books are quoted, highlighting qualities and rights referred to seniors especially in the delicate context of the health-care system. Findings The lack of a commonly shared perspective on this delicate kind of patient entails the difficulty to reach a coherent and satisfying definition about who a senior is. Originality/value The lack of a commonly shared definition leads to inevitable misunderstandings and could explain the arduousness of considering seniors in all their aspects. Further investigations are suggested.

Hedonic experiences at heritage attractions: the visitor’s perspective

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ana Carolina Bender ◽  
Manuela Guerreiro ◽  
Bernardete Dias Sequeira ◽  
Júlio Mendes
Keyword(s):  
Design Methodology ◽  
Theory And Practice ◽  
Structured Interviews ◽  
Content Type ◽  
Heritage Sites ◽  
Exploratory Approach ◽  
Hedonic Experience ◽  
Using Data

Purpose The purpose of this study is to explore the hedonic experience and its formation at heritage attractions. Design/methodology/approach A qualitative and exploratory approach was applied, using data from 21 semi-structured interviews and three in-situ focus groups. Findings Findings highlight that senses, imagery and emotions are stimulated by the physical landscape and by triggers of memorable experiences. Research limitations/implications To further explore this topic, a broader range of heritage attractions and perspectives from the diverse stakeholders involved in the management and consumption of these sites is needed. Originality/value Given the scarcity of research dedicated to the hedonic experience at heritage sites, this study provides a contribution by exploring the visitor’s perspective and points out relevant insights. As the hedonic feelings of pleasure, comfort and related affective responses impact the quality of memorable experiences, relevant implications for theory and practice are discussed.

Commentary on “The experiences of older carers of people with learning disabilities: ‘I just carry on with it’”

2021 ◽  
Vol 26 (1) ◽  
pp. 58-62
Author(s):  
Jan Sunman
Keyword(s):  
Quality Of Life ◽  
Learning Disabilities ◽  
Lived Experiences ◽  
Design Methodology ◽  
Policy And Practice ◽  
Content Type ◽  
The Voice

Purpose The purpose of this paper is to provide a commentary on the article by Rachel Forrester-Jones on the experiences of older carers of people with learning disabilities. Design/methodology/approach The commentary reflects on the themes identified in the original article, comparing its findings to the lived experiences of those taking part in older carers’ projects in Oxfordshire, England. Findings Similar broad themes were identified in both samples. Given these findings, the extent to which matters have changed, since the Valuing People work on older carers is considered. Originality/value The paper discusses policy and practice implications to improve the quality of life of older carers and their families and explores how the voice of older carers can be strengthened to enable them to shape practice and policy.

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