Evaluation of residual clearance after pre-joining and pre-joining scheme optimization in aircraft panel assembly

2016 ◽  
Vol 36 (4) ◽  
pp. 376-387 ◽  
Author(s):  
Di Yang ◽  
Weiwei Qu ◽  
Yinglin Ke
Keyword(s):  
Pareto Optimality ◽  
Design Methodology ◽  
Elastic Behavior ◽  
Assembly Model ◽  
Content Type ◽  
Scheme Optimization ◽  
Constrained Variation ◽  
Practical Implications ◽  
Excessive Number

Purpose For the automatic drilling and riveting in panel assembly, gaps between the skin and strangers are inevitable and undesirable. At present, the determination of pre-joining schemes relies on workers’ experience, introducing excessive number and inappropriate locations of pre-joining. This paper aims to present a new method for the evaluation of residual clearances after pre-joining and the pre-joining scheme optimization, providing operation guidance for the workers in panel assembly workshop. Design/methodology/approach In this paper, an equivalent gap assembly model for pre-joining is proposed on the basis of the mechanism of variation. This model retains the essential elastic behavior of the key features during the pre-joining operation and calculates the residual clearances in the view of the potential energy. Subsequently, this method is embedded into a Pareto optimality-based genetic algorithm, and the optimal pre-joining schemes are achieved with the consideration of the total residual clearances and the permissive tolerances. Findings The equivalent gap assembly model has the capability to predict an acceptable degree of accuracy of the residual clearances and achieve the optimized pre-joining schemes with less number of pre-joining at the same level of residual clearances. Practical implications The optimized pre-joining schemes are given in the form of Pareto optimality set, and workers can select suitable results according to their inclination to the quality and efficiency. Originality/value The paper is the first to propose the equivalent gap assembly model for the pre-joining operation, which provides for the simplification of the calculation of residual clearances based on the constrained variation principles.

Causality in qualitative market and social research

2019 ◽  
Vol 22 (3) ◽  
pp. 405-413
Author(s):  
Clive Roland Boddy
Keyword(s):  
Qualitative Research ◽  
Design Methodology ◽  
Social Research ◽  
Pragmatic Approach ◽  
Social Phenomena ◽  
Content Type ◽  
The Past ◽  
The Moment ◽  
Practical Implications

Purpose Academic qualitative researchers have been criticized for rejecting the idea that their research can establish causality while market and social researchers, with their realist and pragmatic approach to research, take for granted that it can. This paper aims to explore the ability of qualitative research to determine cause and effect in terms of market and social phenomena. Design/methodology/approach The literature on causality in qualitative research is reviewed and discussed. The discussion is further informed by the author’s own experience of undertaking commercial and academic market and social qualitative research over the past 33 years. Findings In qualitative market and social research, the determination of causality is often needed but rarely discussed. This paper explores this occurrence and brings to the fore, via discussion and the use of example, the ways in which causality can be determined by qualitative research. Practical implications A determination of what events bring about predictable changes in social and market environments can be established via qualitative research particularly at a probabilistic level of causality. This implies that policymakers should give a greater emphasis to qualitative findings than then sometimes do at the moment. Originality/value Causality in market and social research is rarely discussed by practitioners but is nevertheless a premise of much of the qualitative research that is undertaken. This paper is therefore distinctive in that it examines whether this premise is justifiable.

Profit-sharing investment accounts in islamic banks or mutualization, accounting perspective

2016 ◽  
Vol 14 (1) ◽  
pp. 30-48 ◽  
Author(s):  
Wasim K. AlShattarat ◽  
Muhannad A. Atmeh
Keyword(s):  
Financial Reporting ◽  
Mutual Fund ◽  
Design Methodology ◽  
Profit Sharing ◽  
Islamic Banks ◽  
Content Type ◽  
Implementation Challenges ◽  
Total Profit ◽  
Practical Implications

Purpose Islamic banks use Mudarabah contract to replace the interest-bearing deposits with profit-sharing investment accounts. The purpose of this paper is to explore the challenges and problems associated with the employment of Mudarabah contract by Islamic banks. Design/methodology/approach The study critically analyzes the Mudarabah contract used by Islamic banks. It reviews the evolution of the contract from its traditional type to more complicated types such as compound, unrestricted, commingled and continuous Mudarabah. The paper investigates the problems that have emerged from implementing such types in current business settings. Findings The paper proves that implementing the Mudarabah contract by banks imposes several problems among which are the following: difficulty in the determination of total profit resulting from Mudarabah and in allocating this profit to the multiple parties involved in Mudarabah; usage of reserves to cater against future losses may undermine the concept of Mudarabah profit-loss sharing and lead to earnings management; corporate governance is also a major problem in Mudarabah contract, as the depositors are exposed to risks but have no governance rights; and Mudarabah may also lessen the fair presentation of financial reporting. Research limitations/implications The paper examines the evolving Mudarabah contract and its implementation challenges, based on available literature (no empirical analysis was conducted). Practical implications The implications are significant for the future development of Islamic contracts and Islamic accounting treatments. Originality/value Many studies explored the Mudarabah contract from a Shariah or law perspective. However, this paper investigates the Mudarabah contract with a focus on the implication on accounting and financial reporting because of the lack of studies in this area. Furthermore, it demonstrates the persistent flaws in the Mudarabah contract, and it proposes a new model for mobilizing funds, i.e. mutual fund.

Introducing a concept for efficient design of EFQM excellence model

2015 ◽  
Vol 27 (4) ◽  
pp. 382-396 ◽  
Author(s):  
Seyed Amir Bolboli ◽  
Markus Reiche
Keyword(s):  
Corporate Culture ◽  
Design Methodology ◽  
Review Of Literature ◽  
Efficient Design ◽  
Maturity Level ◽  
Comprehensive Review ◽  
Content Type ◽  
Model Based ◽  
Practical Implications

Purpose – The purpose of this paper is to propose a roadmap for operationalizing EFQM excellence model based on the RADAR logic and in parallel develop a new concept for selecting the firm-specific EFQM measures based on the level of maturity and the prevailing corporate culture. Design/methodology/approach – A comprehensive review of literature leads to a clarification of the relation between EFQM measures and RADAR logic and also identification of the requirements for assessment of culture and determination of maturity level in the context of EFQM excellence model. Based on these requirements, existing culture assessment approaches and maturity assessment methods have been evaluated. Findings – The main outcome of this research is a new concept for efficient design of EFQM excellence model. This concept consist of three main parts: assessment of culture types in context of EFQM; assessment of maturity level; and design of EFQM measures based on RADAR logic. The findings are expected to reduce the effort for implementation of EFQM by designing tailored measures that fit to the existing culture and maturity level. Practical implications – The findings of this study are relevant to multinational large firms that deal with EFQM or similar excellence models. Originality/value – This paper presents a new concept for designing EFQM in the light of prevailing corporate culture and maturity level, which in one hand needs fewer resources and on the other hand it is more effective in implementation.

How to make knowledge resources valuable

2017 ◽  
Vol 47 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Syed Amjad Hussain
Keyword(s):  
Design Methodology ◽  
Knowledge Integration ◽  
Content Type ◽  
Knowledge Resources ◽  
Knowledge Resource ◽  
Integration Point ◽  
Ability Levels ◽  
Knowledge Requirements ◽  
Practical Implications

Purpose This paper aims to offer an integration point for newly acquired heterogeneous knowledge resources to be assessed if these resources qualify to be a part of a firm’s existing knowledge resource portfolio. Focus of this paper will be on the development of knowledge integration point (KIP), in addition to the factors helping in determination of this KIP, for example, manager’s judgment about the firms’ knowledge requirements, knowledge reserve a potential employee should have and firm’s existing knowledge resource portfolio. Design/methodology/approach This study includes a content analysis. Findings Firms should have only those resources which contribute to value creation for the customers and the organization. Presence of any other knowledge resource which does not have the ability to create value is a waste of value. It is the knowledge managers’ responsibility to decide whether a knowledge resource should be a part of a firm’s existing knowledge portfolio. This decision should be taken before the acquisition of that knowledge resource, i.e. at KIP, then it would be more easy for knowledge managers to handle and integrate them with the existing set of firm’s knowledge resources. Practical implications If the potential knowledge resource is evaluated at KIP to know its level of integration and configuration ability with the existing firms’ knowledge resource portfolio, then it will take less time and efforts to integrate. It will take such firms far ahead than those whose acquired resources took much time to integrate. Hence, resource’s integration and configuration ability levels affect the speed of integration, which ultimately provides opportunity to firms to perform well. Originality/value KIP may help to make speedier integration process, which eventually leads firms to perform better.

Study of factors which facilitate increase of effectiveness of university education

2017 ◽  
Vol 31 (1) ◽  
pp. 12-20 ◽  
Author(s):  
Adam Albekov ◽  
Tatyana Romanova ◽  
Natalya Vovchenko ◽  
Tatyana Epifanova
Keyword(s):  
Market Economy ◽  
Design Methodology ◽  
Academic Staff ◽  
University Education ◽  
Practical Significance ◽  
Content Type ◽  
Russian Universities ◽  
Practical Implications

Purpose The purpose of this paper is to study the factors which facilitate the increase of effectiveness of university education and determination of perspectives of their management for provision of maximization of effectiveness of university education by the example of modern Russia. Design/methodology/approach The authors define the notion and sense of effectiveness of university education under the conditions of market economy, conduct theoretical review, classify factors which facilitate the increase of effectiveness of university education, and conduct regression and correlation analyses of influence of various factors on effectiveness of university education. Findings As a result of the research, the authors come to the conclusion that the volume of financing of science is not a factor of efficiency of scientific activities of Russian universities; the most important factors of effectiveness of university education are the number of universities and quantity of academic staff. Perspectives of provision of maximization of university education effectiveness in modern Russia are related to management of human capital – academic staff of universities – and finding a balance of quantitative growth and increase of quality of university education. Practical implications Practical significance of the conducted research consists in the fact that its results could be used during development and conduct of the state policy for the management of effectiveness of the system of university education in modern Russia. Originality/value The research has high theoretical significance, as it contributes to the development of the concept of effectiveness and understanding of foundations of management of the system of university education under the conditions of market economy.

Application of computed tomography to hole expansion measurements

2019 ◽  
Vol 91 (2) ◽  
pp. 235-240
Author(s):  
Wojciech Wronicz ◽  
Maciej Malicki
Keyword(s):  
Computed Tomography ◽  
Detailed Analysis ◽  
Design Methodology ◽  
Content Type ◽  
Hole Expansion ◽  
Specimen Width ◽  
Lower Accuracy ◽  
Conventional Methods ◽  
Practical Implications

Purpose The purpose of this paper is to investigate a possibility of determination of the rivet hole expansion with the use of computed tomography (CT). This method offers several benefits in comparison to the traditionally used destructive methods. Design/methodology/approach The measurements of rivet hole expansion were performed on three specimens with the use of CT. Then, the same specimens were measured with the use of the conventional destructive method. This allows to estimate accuracy of the proposed method and characterize its advantages and limitations. Findings Good correlation with the destructive method has been obtained. The proposed method enables more detailed analysis of a joint as arbitrarily oriented cross-section for analysed area can be easily generated and increase of measurements number is always possible and simple. The disadvantage of the method is lower accuracy of diameter determination than in the case of conventional methods. Research limitations/implications The measurements were performed only on one type of specimens. Probably, if a rivet and sheets were made of the same alloy, the measurements would be barely possible. The rivets were installed with squeezing ratio D/Do = 1.7 whose value is close to maximum as defined in riveting instructions (Kaniowski, 2015). This means that measured hole expansions were higher than in typical joint. The proposed method is appropriate for simple specimens (one rivet at a specimen width). Practical implications The investigation shows that rivet hole expansion can be measured with the use of CT. This method is useful especially when destruction of a specimen is not allowed or more detailed analysis is required (e.g. measurements on many depth levels). Originality/value The paper presents measurements of rivet hole expansion with the method which has not been used before for this application. Advantages and limitations of the proposed approach compared to conventional methods are discussed.

A vision-based method for supporting autonomous aircraft landing

2018 ◽  
Vol 90 (6) ◽  
pp. 973-982 ◽  
Author(s):  
Mariusz Oszust ◽  
Tomasz Kapuscinski ◽  
Dawid Warchol ◽  
Marian Wysocki ◽  
Tomasz Rogalski ◽  
...  
Keyword(s):  
Real World ◽  
Design Methodology ◽  
Auxiliary Information ◽  
Content Type ◽  
Flight Data ◽  
Aircraft Landing ◽  
Potential Source ◽  
Lighting Systems ◽  
Practical Implications

PurposeThis paper aims to present a vision-based method for determination of the position of a fixed-wing aircraft that is approaching a runway.Design methodology/approachThe method determines the location of an aircraft based on positions of precision approach path indicator lights and approach light system with sequenced flashing lights in the image captured by an on-board camera.FindingsAs the relation of the lighting systems to the touchdown area on the considered runway is known in advance, the detected lights, seen as glowing lines or highlighted areas, in the image can be mapped onto the real-world coordinates and then used to estimate the position of the aircraft. Furthermore, the colours of lights are detected and can be used as auxiliary information.Practical implicationsThe presented method can be considered as a potential source of flight data for autonomous approach and for augmentation of manual approach.Originality/valueIn this paper, a feasibility study of this concept is presented and primarily validated.

Mixed fruit juices from Cerrado

2018 ◽  
Vol 120 (10) ◽  
pp. 2334-2348 ◽  
Author(s):  
Maria Cecília Evangelista Vasconcelos Schiassi ◽  
Amanda Maria Teixeira Lago ◽  
Vanessa Rios de Souza ◽  
Juliana dos Santos Meles ◽  
Jaime Vilela de Resende ◽  
...  
Keyword(s):  
Design Methodology ◽  
Ascorbic Acid Content ◽  
Brazilian Cerrado ◽  
Content Type ◽  
Sensory Acceptance ◽  
Nutritional Characteristics ◽  
Derivative Products ◽  
Best Responses ◽  
Practical Implications

Purpose The purpose of this paper is to optimize a mixed juice made from Brazilian Cerrado fruits (cagaita, mangaba and marolo). Design/methodology/approach The juices were evaluated by rheological, physical, physicochemical, nutritional and sensory acceptance analyses. The mixture design is a widely used tool for product optimization, allowing the determination of factors, combinations and levels that provide best responses. Findings The results show that using mangaba pulp negatively contributed to juice acceptance, but resulted in the highest ascorbic acid content. The treatments produced using cagaita and marolo pulps presented a greater acceptance by consumers, and contributed to higher antioxidant activity and phenolic compounds content. The juice prepared with a mixture of equivalent quantities of the three fruits had the highest β-carotene and lycopene contents. Practical implications This research has shown that different fruit combinations can improve sensory and nutritional characteristics, adding value to the final product. Social implications The processing of mixed juices could increase population access to the nutrients present in Brazilian Cerrado fruits, given that they are seasonal and perishable fruits. Originality/value In recent years, there has been an increase in the development of new food products based on Cerrado native fruits, however information on the chemical and nutritional characteristics, rheological behavior, and sensory attributes of the derivative products are still limited, resulting in a lack of scientific investments in this area. In addition, it is necessary to optimize the developed products to offer the consumer a unique product, combining the characteristics of two or more fruits, which adds value to the final product.

scholarly journals The power of fears in the travel decision – covid-19 against lack of money

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tamara Gajić ◽  
Marko D. Petrović ◽  
Ivana Blešić ◽  
Milan M. Radovanović ◽  
Julia A. Syromiatnikova
Keyword(s):  
Critical Period ◽  
Design Methodology ◽  
Structural Model ◽  
Content Type ◽  
Travel Decisions ◽  
Travel Decision ◽  
The Impact ◽  
Practical Implications ◽  
Crisis Situations

PurposeDuring the pandemic, two types of fear were identified that occur significantly in all groups or profiles of people. The aim of this paper is to determine which of the two types of fears exist in certain psychological groups, and which of the fears strongly influence the decision to travel.Design/methodology/approachThe VALS 2 method and standardized questionnaire were used for the segmentation of the tourist market or for the determination of the psychographic profiles of the consumers, and three additional questions were joined to it as they were vital for the research of the type of fear and its impact on the decision for traveling. When the reliability of the questionnaire and the validity of the sample were determined, the data were further processed using a computer program package IMB AMOS SPSS 21.00, and then, based on the theoretical suppositions and hypotheses, the SEM structural model was created.FindingsThe paper indicates the existence of established types of fears in humans, when it comes to pandemics and similar crisis situations. People are most afraid of infection during travel, and lack of funds and job loss during the critical period of the pandemic. The research conducted confirms that all groups of people, who are determined by the psychological technique VALS 2, react with a certain dose of fear and make decisions under the pressure of fears.Research limitations/implicationsThe research had limitations in terms of contact with people and conducting live surveys. The measures during the pandemic, which were carried out by the state, included social distance and limited movement of people.Practical implicationsThe work can contribute to the community, along with similar research. The results of the research will be available, and it will be possible to see the behavior of people during crisis situations, and the impact of fears on making decisions, both travel decisions and decisions related to other areas of life.Originality/valueThe paper provides research results on a large sample of respondents, and can serve as a basis for further research in the field of tourism, psychology and similar fields. It is crucial to consider the type of fears, and the strength of the impact of these fears on the decision to travel, during crisis situations.

scholarly journals Dynamic capabilities for digital transformation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Daniel Ellström ◽  
Johan Holtstrom ◽  
Emma Berg ◽  
Cecilia Johansson
Keyword(s):  
Design Methodology ◽  
Dynamic Capabilities ◽  
Digital Transformation ◽  
Strategy Development ◽  
Content Type ◽  
Digital Infrastructure ◽  
Consultancy Firm ◽  
Inside Out ◽  
Practical Implications

PurposeThe purpose of this paper is to identify sensing, seizing and reconfiguring routines of dynamic capabilities that enable digital transformation in firms.Design/methodology/approachA qualitative approach is used. Representatives from a firm going through digital transformations are interviewed, and focus groups have been carried out with a consultancy firm experienced in giving advice to firms going through digital transformation.FindingsSix routines identified as relevant specifically for digital transformation are identified. These are cross-industrial digital sensing, inside-out digital infrastructure sensing, digital strategy development, determination of enterprise boundaries, decomposition of digital transformation into specified projects and creation of a unified digital infrastructure.Practical implicationsThe authors provide direction for managers on how to approach digital transformation. In relation to previous research, the authors provide more specific guidance regarding how to reconfigure the organization in digital transformation.Originality/valueThe paper uses a novel context for digital transformation and complements the very few studies available using dynamic capabilities to understand digital transformation.

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