Ishikawa diagrams and Bayesian belief networks for continuous improvement applications

2019 ◽  
Vol 31 (3) ◽  
pp. 294-318 ◽  
Author(s):  
Mark Rodgers ◽  
Rosa Oppenheim

Purpose In continuous improvement (CI) projects, cause-and-effect diagrams are used to qualitatively express the relationship between a given problem and its root causes. However, when data collection activities are limited, and advanced statistical analyses are not possible, practitioners need to understand causal relationships. The paper aims to discuss these issues. Design/methodology/approach In this research, the authors present a framework that combines cause-and-effect diagrams with Bayesian belief networks (BBNs) to estimate causal relationships in instances where formal data collection/analysis activities are too costly or impractical. Specifically, the authors use cause-and-effect diagrams to create causal networks, and leverage elicitation methods to estimate the likelihood of risk scenarios by means of computer-based simulation. Findings This framework enables CI practitioners to leverage qualitative data and expertise to conduct in-depth statistical analysis in the event that data collection activities cannot be fully executed. Furthermore, this allows CI practitioners to identify critical root causes of a given problem under investigation before generating solutions. Originality/value This is the first framework that translates qualitative insights from a cause-and-effect diagram into a closed-form relationship between inputs and outputs by means of BBN models, simulation and regression.

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Dimitra Dritsa ◽  
Nimish Biloria

PurposeThis paper presents a critical review of studies which map the urban environment using continuous physiological data collection. A conceptual model is consequently presented for mitigating urban stress at the city and the user level.Design/methodology/approachThe study reviews relevant publications, examining the tools used for data collection and the methods used for data analysis and data fusion. The relationship between urban features and physiological responses is also examined.FindingsThe review showed that the continuous monitoring of physiological data in the urban environment can be used for location-aware stress detection and urban emotion mapping. The combination of physiological and contextual data helps researchers understand how the urban environment affects the human body. The review indicated a relationship between some urban features (green, land use, traffic, isovist parameters) and physiological responses, though more research is needed to solidify the existence of the identified links. The review also identified many theoretical, methodological and practical issues which hinder further research in this area.Originality/valueWhile there is large potential in this field, there has been no review of studies which map continuously physiological data in the urban environment. This study covers this gap and introduces a novel conceptual model for mitigating urban stress.


2015 ◽  
Vol 1 (1) ◽  
pp. 50-69 ◽  
Author(s):  
Hong-bumm Kim ◽  
Sanggun Lee

Purpose – The purpose of this paper is to examine the causal relationships of city personality and city image, together with the possible effect of city image on the revisit intention of visitors, through empirical validation, so that some meaningful implications can reveal to city planners and marketers how the city tourists can be affected by the personality and image of the city. Design/methodology/approach – This study offers an integrated approach to understanding the relationship between city personality and city image. The research model investigates the relevant relationships among the underlying dimensions of city personality and city image by using a structural equation modeling (SEM) approach. Data obtained from a sample of 302 respondents drawn from a web-based survey in South Korea were analyzed with AMOS program. Findings – The results of this empirical study indicate that city personality positively or negatively affect city image depending on the nature of constructs. Positive relationships are found to exist between excitement as well as sophistication personality and dynamic image of city. On the contrary, the relationship between sincerity personality and dynamic image is negative. All the specific three images of city: dynamic, specific, and static image show positive impact on revisit intention of city tourists. Originality/value – The empirical results of this study provide tenable evidence that the proposed SEM designed to consider city personality and city image, and revisit intention simultaneously is acceptable. Even though in the previous literature, researchers tried to explain the relationship between city personality and city image, the conceptual model and empirical studies pertaining to causal relationships among those constructs have not been thoroughly examined. It is believed that this study has a substantial capability for generating more precise applications related to city tourism, especially concerning city personality and city image.


2018 ◽  
Vol 37 (2) ◽  
pp. 114-126 ◽  
Author(s):  
Nurdjannah Hamid

Purpose The purpose of this paper is to analyze the balanced scorecard (BSC) for measuring the competitive advantage of infrastructure assets of state-owned port in Indonesia: Pelindo IV, Makassar, Indonesia. Design/methodology/approach This investigation adopts an explanatory and exploratory qualitative case study method to analyze the effectiveness of the BSC over the strategy management processes. For data collection, the researchers used semi-structured interviews, direct observation and document collection. Data collection was made for a six-month period, which allowed deep knowledge to be gained of the culture and management methods used in Pelindo IV Makassar Branch. Other data collected refer to the company’s documentation and reporting of online media publications. Detailed interview data were the main data sources, allowing the authors to obtain a detailed and holistic understanding of the experience, opinions, and attitudes of the interviewees. Interviews focus on asset management to determine the relationship between various factors. This study adopts an ideal BSC principle (four perspectives) in order to develop a strategic map for infrastructure assets of Pelindo IV. Findings The results showed that the management performance of Pelindo IV in the financial sector over the next five years was expected to increase by 3.5 times with the business profit reaching an amount of Rp.1.64 trillium in 2017. In the next five years, the target of the customer’s perspective set was zero complaints and zero claim with waiting time meeting the ideal standard, which is a maximum of one-hour service, and the number of containers were expected to witness an average growth of 30 percent per year; the growth ship traffic visit history showed that the flow of goods increased by 4 percent and the number of passengers was targeted to grow up to 30 percent. A historical growth rate of 6 percent was also expected both for the human resources and personnel scout. Originality/value In this paper, the Sobel test was used to test the significance of a mediation effect and balanced scorecard was used for measuring competitive advantage of infrastructure assets of state-owned ports in Indonesia. Previously, no research has been undertaken to examine the relationship between the location of the study and competitive advantage of infrastructure assets in the context of PELINDO IV, Makassar branch, Indonesia.


2018 ◽  
Vol 22 (3) ◽  
pp. 292-314 ◽  
Author(s):  
Aries Susanty ◽  
Norma Mustiana Sirait ◽  
Arfan Bakhtiar

Purpose The purpose of this study is twofold: to examine the effect of information sharing and contract on increasing the trust level in the relationship between the batik small- and medium-size enterprises (SMEs) and supplier and to examine the trust on performance of a supply chain related to the procurement of raw cotton fabric (mori). Design/methodology/approach This research used primary data collected through interviews and closed questionnaires using a five-point Likert scale. The sample included 65 people, including batik SME-owners in Pekalongan, a Central Java city. This research was conducted using partial least square (PLS) through SmartPLS 3.0 software to analyze the hypothesis. Findings The results of hypothesis testing indicate that trust between owners of SME and their suppliers has a significant positive effect on the performance of supply chain management (SCM). Strong trust between batik SME- owners with their suppliers will be beneficial for both parties. Among other things, trust can reduce unnecessary cost and activity, reduce the waiting time for the arrival of raw material, reduce the number of inventories and increase profit and customer satisfaction. This result has also show that information sharing and informal contract have a significant positive effect on trust between batik SME-owners and their mori suppliers. In this case, information sharing has a higher effect on trust compared to informal contract. Broader information was distributed to the batik SME-owners and their suppliers, resulting in stronger trust between them. Research limitations/implications The limitations of this study include the relatively small sample size and data collection method used to determine the effect of trust, the number of the antecedent variables of trust and the type of scale used to measure the performance of the supply chain. Suggestions for future research may include expanding the scope of the data collection to other regions in Indonesia; adopting a dyadic approach and longitudinal research in providing evidence on the effect of trust as a component of an interactive activity along the supply chain; adding other variables that contribute towards increasing the trust between SMEs and their suppliers (such as commitment); and enhancing the performance measurement of SCM by using a direct measure of financial and non-financial performance instead of recording the perception of the batik SME-owners. Practical implications As the scale of their business increases, it is better if the batik SMEs can enhance information sharing and informal contract with suppliers to promote the development of trust. In this case, to ensure that batik SMEs will have better information sharing from their supplier, it is better if the batik SME-owners using the criteria of supplier willingness to share detailed information when they select the new supplier. Then, to increase the role of contract on trust, it is better if owner of batik SME learn to understand the written contract processes and procedures as their business scale increases. Social implications The research confirms that information sharing, informal contract and trust between batik SMEs and their suppliers can have a positive effect on the performance of the supply chain. It may encourage more SMEs and suppliers in the batik industry to build better information sharing, informal contract and trust as a bottom line for the economic and non-economic growth of their business. Originality/value The conceptual model used in this study is original, built from past research about the relationship between information sharing, informal contract and trust on the performance of the supply chain. Besides, the selection of the sample is also original, which in this case is on the batik SMEs which have informal contracts. This case has still been rarely studied, and the research is therefore highly valuable.


2019 ◽  
Vol 30 (6) ◽  
pp. 920-936 ◽  
Author(s):  
Manjeet Kharub ◽  
Rahul S. Mor ◽  
Rajiv Sharma

Purpose The purpose of this paper is to examine the cost leadership competitive strategy’s (CLCS) impact on firm performances and the mediating role of quality management (QM) practices in the context of micro, small and medium enterprises (MSMEs). Design/methodology/approach A structures questionnaire data collected from 245 ISO 9000 certified MSMEs in India (65.1 per cent of response rate) have been utilised to understand the CLCS’s impact on firm performances. In the first step, the data adequacy tests were performed to check the reliability and validity of the questionnaire and survey data. After that, the partial mediating model (direct, indirect and total effect) along with structural equation modelling approach was employed to test the research hypotheses. Findings The study results revealed that no direct relationship exists between the CLCS and firm performances (0.12<β<0.13; p>0.05); however, QM practices entirely mediated their relationship (β=0.73, p<0.01). Among eight model parameters, with highest total effects on product quality improvement (β=0.6264) and process improvement (β=0.6028), the continuous improvement secured the rank 1, followed by information and analysis (β=0.2334) and supplier management (0.1839), respectively, at p<0.05. Based on the empirical results, it can be concluded that the continuous improvement via proper information and data analysis is the key to achieve CLCS’s goal in the MSMEs. Research limitations/implications The study results’ generalisation towards the large organisations is limited. The survey result findings applicability to other developing countries should also be treated with caution because the Indian Government subsidised the MSMEs selected for this study. The study results will help managers in implementing CLCS at the organisational level. The successful implementation will facilitate a competitive advantage in the local market and will motivate them to think globally. Originality/value The research observation and findings are expected to contribute to the strategic management in manufacturing industries. The study also confirms the existence of strategic management in MSMEs in a developing country. Furthermore, the major contribution is to understand the mediating role of QM practices, especially continuous improvement effect on the relationship between CLCS and firm performances in a developing country. The results indicated that the CLCS is only possible when the managers in the manufacturing sectors emphasis on the QM practices in their firms.


Author(s):  
Mahmoud Al Saeed ◽  
Raffaello Furlan

Purpose West Bay, the Business District of Doha, the capital city of the State of Qatar, is facing an urban regeneration phase due to the construction of the West Bay Central Train Station, a four-storey underground building hosting the intersection of two metro lines – one long-distance train and one people mover. The development of the transit village, or transit-oriented development, is raising concerns related to the need to enhance liveability (as urban quality of life) and sense of place (considering the local cultural identity). The purpose of this paper is to investigate existing urban elements, such as transit stations, as well as their impact on the liveability and identity of the place and to define a comprehensive urban regeneration strategy for the development of the distinctive urban village of West Bay. Design/methodology/approach The analysis and data collection were based on the type of data as tangible aspects which mainly include the physical, and aspects such as diversity, density, connectivity, transportation systems and public realm. Intangible factors are concluded from close and direct site observation, semi-structured in-depth interviews, as a face-to-face type of data collection with key persons in Qatar Rail, the Ministry of the Municipality and public work authorities, where the intangible aspects were briefed by economic aspects, environmental situation, social pattern and human behaviours. After siting the base ground of theoretical knowledge and site condition analysis, the authors identified a group of key factors that respond to the targeted (tangible and intangible) aspects and threats, to propose a design treatment for the site threats and highlighted issues in addition to a group of recommendations and design strategies (Charmaz, 2006; Marshall and Rossman, 2010). Findings From the data analysis of the site and by revisiting the literature review, a group of recommendations are formulated. The authors divided the recommendations into two types according to their method of application. The first is the design approach, where the authors propose integrated design proposals to tackle and solve the highlighted issues from the findings of site analysis (diversity, density, connectivity in addition to economic, social and environmental factors). Meanwhile, the second part represents the systematic recommendations that should be adopted and implemented to enhance the existing situation and form a guideline for further developments. Research limitations/implications This research study could be further expanded to urban planning, urban design, social development and environmental engineering. Urban design and social development chiefly focus on the relationship between built and unbuilt forms with an eye to creating healthy, sustainable communities for current and future generations. Originality/value Because issues of social sustainability and urban design have failed to attract suitable levels of attention from local scholars, gaps have arisen in the research. Accordingly, this research study investigates the relationship between social sustainability and urban design standards in the State of Qatar with an eye to translating theoretical knowledge into applicable principles of urban planning. In doing so, it will help close the gaps in knowledge related to Qatar and GCC countries.


2018 ◽  
Vol 15 (2) ◽  
pp. 118-136 ◽  
Author(s):  
Ismael Luiz dos Santos ◽  
Sidnei Vieira Marinho

Purpose This study aims to find evidence of a possible relationship between three constructs that are generally investigated separately: entrepreneurial orientation, understood as entrepreneurship on the organizational level; marketing capability, seen as a highly competitive factor for the organization; and business performance, highlighted as a focus of the entire organization. Design/methodology/approach A survey-based quantitative approach was adopted with a cross-sectional temporal perspective. To arrive at results that can be compared, the study uses factor analysis and structural equations modeling techniques, with estimations of maximum likelihood for testing the quality of fit of the measures to the structural models, using SPSS 21 and AMOS 16 software. Data were collected at the 27th EXPOSUPER, which is a trade fair at which 35,000 visitors were present. The data collection instrument used is a questionnaire previously validated by Reis Neto et al. (2013a). The first section covers control variables chosen to profile the firms, the second contains entrepreneurial orientation variables, the third comprises marketing capability variables and the fourth section contains business performance variables, all using seven-point Likert response scales. Findings Tests of the entrepreneurial orientation measurement scale produced interesting results in this application within the retail supermarket industry. The results of exploratory factor analysis indicated that a scale with three dimensions was significant. The relationship between entrepreneurial orientation and marketing capability (H1) is positive, through the intermediate dimensions of innovation, proactiveness and risk-taking, used by firms’ management, contributing to their efforts to research and manage the market, to develop products and services and to offer better prices. Exploratory factor analysis and confirmatory factor analysis showed that four of the scale’s dimensions of the marketing capability were significant: market research, market management, new product development and pricing. Comparison of these results with those of Reis Neto et al. (2013a) reveals a difference, as although their result, achieved using structural equations modeling, also had four factors; the promotion dimension was the most significant and absorbed the other variables. Despite these differences, confirmatory factor analysis and structural equations modeling demonstrated that this construct met the minimum conditions for adequacy, where (H2), formulated to test the relationship between the marketing capability construct, was confirmed. The final construct analyzed in this study was business performance, initially suggested by González-Benito et al. (2009), and also used by Reis Neto et al. (2013a). They used the dimensions profitability, market value and market response, and in the present study, after exploratory factor analysis, confirmatory factor analysis and structural equations modeling, the results were identical to those authors results, in that (H3), formulated with the objective of testing the relationship between the entrepreneurial orientation construct and business performance, was confirmed, and although this was not the most robust of the relationships postulated in the three hypotheses, but was of lower significance. Research limitations/implications Although this study has achieved its objective, one of the study’s limitations relates to the data collection instrument, which was subject to failures in terms of the number of variables to be analyzed in each dimension. This led to elimination of certain dimensions during the analyses. Another limitation is related to the method used in the study. When questionnaires are used as data collection instruments, respondents often may not understand the true meaning of questions, which could lead them to choose any option, thereby stripping the results of credibility. In view of this limitation, it is suggested that future researchers conduct qualitative studies, using the case study method, which could offer greater clarity and increase understanding of the results related to these subjects. Even considering that this study has certain limitations and restrictions affecting generalization, it is hoped that it raises new questions, interests and inspirations, improving and complementing understanding of this strong social and economic sector. Originality/value It is identify the relationship between entrepreneurial orientation and marketing capability, since to date there is no evidence from studies confirming the existence of such a relationship. This statement was based on the results of a bibliographic survey conducted using the ProKnow-C, knowledge development process-constructivist methodology, in which, this originality was positive and significant, offering new studies from this point of view.


2014 ◽  
Vol 32 (4) ◽  
pp. 413-435 ◽  
Author(s):  
Kumkum Bharti ◽  
Rajat Agrawal ◽  
Vinay Sharma

Purpose – The purpose of this paper is to explore the drivers of customer participation for value co-creation among bottom of the pyramid (BOP) customers. In addition, the difference, if exists, between the perception of customer and marketers belongs to this segment about the drivers of customer participation is also studied. Design/methodology/approach – Qualitative study has been conducted to investigate the drivers of customer participation for value co-creation in BOP market. Data collection are done through in-depth interviews from BOP customers and marketers. Spearman rank correlation is used to find out the relationship between the BOP customers and marketers responses. Findings – The findings enrich understanding of value co-creation in the BOP market by suggesting the various drivers that instigate BOP consumers to participate in value co-creation activities. The study also shows a strong relationship between the customers and marketers perspective on what drives BOP customers to participate in value co-creation. Research limitations/implications – The study is conducted qualitatively hence results cannot be generalized. The sample used for data collection is limited to one state of India. Practical implications – Twenty-seven factors are identified that an organization can leverage or develop to successfully practice value co-creation in the BOP markets. Originality\value – The paper provides a comprehensive view to help organizations manage value co-creation through customer participation in BOP market. According to author's knowledge, no prior study in BOP as well as on value co-creation literature discusses empirically the drivers of customer participation in value co-creation.


2016 ◽  
Vol 54 (1) ◽  
pp. 130-147 ◽  
Author(s):  
Wenxing Liu ◽  
Pengcheng Zhang ◽  
Jianqiao Liao ◽  
Po Hao ◽  
Jianghua Mao

Purpose – Prior researches have indicated that leadership had an important impact on employee creativity. However, the authors know little about the link between the dark side of leadership-abusive supervision, and employee creativity, as well as its underlying mechanisms. Combining psychological safety theory and social identification theory, the purpose of this paper is to examine the relationship between abusive supervision and employee creativity and the mediating role of psychological safety and organizational identification between abusive supervision and employee creativity. Design/methodology/approach – The authors conducted a multi-source and time-lagged data collection. At Time 1, team members evaluated abusive supervision and psychological safety, and at Time 2, team members evaluated organization identification, and team leaders evaluated members’ creativity. Abusive supervision, psychological safety were evaluated at first stage and organizational identification, creativity were evaluated at second stage, being conducted 2-4 weeks later after the first stage. Finally 423 participants completed two waves of data collection. Findings – The results suggested that, abusive supervision had negative effects on psychological safety and organizational identification, and psychological safety partially mediated the relationship between abusive supervision and organizational identification, and organizational identification fully mediated the relationship between psychological safety and creativity, and the negative effect of abusive supervision on employee creativity was mediated by psychological safety and then by organizational identification. Originality/value – This study identifies and examines the mechanism underlying the effect of abusive supervision, and suggests that psychological safety and organizational identification are two important mediators of the complex relationship between abusive supervision and employee creativity. Therefore, this study not only re-examines the inconsistent effect of abusive supervision on employee creativity, but also represents the first attempt at integrating the psychological safety perspective and social identification theory to study employee creativity and offers important implications for theory development.


1979 ◽  
Vol 101 (1) ◽  
pp. 73-78
Author(s):  
R. A. Harrison ◽  
P. F. Weatherilt

This paper describes British Gas Corporation (BGC) experience of the operating reliability of aircraft gas turbine powered compressor units utilized in the gas transmission system. The complex nature of the system has led to the design of computer based simulation models to identify the relationship between operating reliability and spare unit provisioning. The need to achieve particular reliability levels has led to the specification in contracts of quantified reliability criteria which are both measurable and achievable. There seems a clear need for national or international standards for reliability specification. BGC is introducing operational and defect data collection systems to identify areas of weakness in current plant and to provide a feedback to the manufacturer.


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