A new method to optimize the truncated PCE order of collocation-based SRSM in reliability analysis and its application to geotechnical problems

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Peng Zeng ◽  
Tianbin Li ◽  
Rafael Jimenez ◽  
Xianda Feng ◽  
Yu Chen ◽  
...  

PurposeThe collocation-based stochastic response surface method (CSRSM) is widely used in geotechnical reliability analyses due to its efficiency and accuracy. Determining the optimal truncated order of the associated polynomial chaos expansion (PCE) is important, as it may strongly affect the practical applicability of CSRSM.Design/methodology/approachThis study investigates the performance of different optimal order selection strategies used in the CSRSM and proposes a new cross-order validation method. First, several methods commonly used for optimal order selection are briefly reviewed, and their merits and limitations for reliability analyses are discussed. Then, an improved optimal order selection method that achieves a better trade-off between efficiency and accuracy is proposed.FindingsIn total, ten simple mathematical examples from the literature are employed to perform a preliminary test on the proposed method, and a comparative study is conducted to demonstrate its advantages with respect to some other existing methods.Practical implicationsA total of three typical geotechnical problems are employed to demonstrate the performance of the proposed method in geotechnical practice.Originality/valueAn improved optimal order selection method that achieves a better trade-off between efficiency and accuracy is proposed. The threshold value of the deterministic coefficient used for the proposed method is discussed.

2017 ◽  
Vol 119 (6) ◽  
pp. 1232-1246 ◽  
Author(s):  
Aina Ravoniarison

Purpose The purpose of this paper is to examine how French senior consumers deal with duality between perceived risk and perceived value associated with functional foods (FFs) and to analyze whether the risk-value trade-off may help to derive different consumer profiles. Design/methodology/approach Data were collected from 220 senior consumers (50-70). A two-step clustering analysis was carried out on factor scores of perceived value and perceived risk. Discriminant analysis was then employed to verify the classification reliability, and analysis of variance was performed to profile the clusters on the basis of additional variables. Findings Four distinctive profiles of FF senior consumers were identified. Significant differences were found to be attributed to personality traits. Interestingly, the “Trustful enthusiasts” and the “Ambivalents” consumers do not differ in their repurchase intention, despite a significant discrepancy in risk perception. Practical implications The study is an opportunity to offer a segmentation of this attractive growing target of health-enhancing products. The typology can help the practitioners to find out a new valuable scope of messages to better communicate to elderly market. Originality/value The research seeks to contribute to the existing knowledge on seniors’ nutrition-related behavior, by proposing a segmentation still lacking in research works. Since FF perceived value appears to be multidimensional and not only utilitarian, the study provides a new insight into the experiential approach of health-enhancing eating. Also, it shows how the differences between FF consumers could be attributed to certain personal variables.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Inayat Ullah ◽  
Rakesh Narain

Purpose Owing to the paucity of literature, in the specific context of mass customization (MC), that explains what factors need to be considered while selecting suppliers and what strategies need to be implemented for effective management of suppliers, this paper aims to explore the effective supplier selection and management strategies and also investigate their impact on the development of mass customization capability (MCC). Design/methodology/approach Through an extensive review of literature, a total of 18 factors for supplier selection and management have been identified. Further, using multiple regression analysis, the linkages between these factors and MCCs have been examined based on the data set from the survey of Indian manufacturing organizations. Findings The results indicate that while concentrating on the responsive and reconfiguration capability, all the five measures of supplier selection and the four measures of supplier management have shown a significant influence. However, in the case of relational capability, only two of the supplier selection strategies and three of the supplier management strategies have shown a notable impact. Practical implications The study provides help to the firms in deciding whom to select and how to manage the suppliers in the course of improving their MCCs. The study has shown the possibility that different types of MCCs might require different approaches to both the supplier selection and management. Originality/value To the best of the authors’ knowledge, this study happens to be the first of its kind that investigates the interconnectedness among the supplier selection and management strategies and MCCs.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lingzhi Yu ◽  
Tingting Zhao ◽  
Xiucheng Fan

PurposeRelational norms, referring to shared values about behavioral rules, distinguish communal and exchange relationships based on different reciprocal expectations between actors. This research explains how reciprocal expectations behind the two relationships trigger gift givers' disparate behavioral goals and further determine their gift choices.Design/methodology/approachThe current work uses three lab experiments (N = 482) and one consumer survey (N = 422) to collect Chinese gifting data. Multiple data-analysis methods – crosstab analysis, ANOVA, linear regression and bootstrapping procedures – confirm the hypotheses.FindingsGift givers distinguish communal and exchange recipients. When selecting gifts for communal (exchange) recipients, people depended more strongly on rational analyses (intuition), preferring products superior on cognitive (affective) attributions. Further, givers primed to be rational decision-makers by anticipating that recipients would evaluate the gifts immediately in their presence, regardless of the communal or exchange context, preferred cognitively superior products.Practical implicationsFrom a managerial perspective, marketers can make targeted recommendations by highlighting the appropriate attribute dimension (cognitive or affective) after learning givers' reciprocal expectations.Originality/valueThis work contributes to the gift-giving literature by revealing the direct link between gifting goals and gift choices, extending the understanding of consumers' gift-selection strategies.


2015 ◽  
Vol 35 (7) ◽  
pp. 1075-1096 ◽  
Author(s):  
Yen-Tsang Chen ◽  
Ronaldo Gomes Dultra-de-Lima ◽  
João Mário Csillag ◽  
José Carlos Tiomatsu Oyadomari

Purpose – The purpose of this paper is to investigate if the organization competitive orientation can really make firms emphasize different internal capability. This paper aims to revisit and extend the study proposed by Fleury and Fleury (2003). Design/methodology/approach – The survey instrument was employed to collect the sample composed by 163 companies from different sectors of Brazilian market. Additionally, several statistic techniques were applied such as cluster analysis, ANOVA test and hierarchical regression analysis to investigate the phenomenon. Findings – It was observed that three possible clusters can be built based on cumulative capabilities perspective and the Operation oriented group has no emphasis on production, logistic nether R & D capability, while other two clusters have a distinctive attentions on their internal capabilities. Research limitations/implications – The limitation of this research lies in using perceptual scale for performance and few constructs with one item for measuring. On the other hand, this research has revisited the taxonomy topic based on cumulative capability perspective and discussed the trade-off concepts assumed in past studies. Practical implications – This study has demonstrated the absence of systematic strategy implementation of those that are considered Operational oriented. Additionally, the authors have demonstrated that market share and customer satisfaction performance are impacted by different competitive priority as well as internal capability. Originality/value – The authors reviewed the work proposed by Fleury and Fleury (2003), and went further in proposing a taxonomy complementation suggested by them. Additionally the authors discussed the assumptions of the taxonomies that have been adopted up today and explored this issue using cumulative capabilities concept. This work is based on competitive orientations, internal capability and cumulative capabilities suggested by seminar papers.


2017 ◽  
Vol 8 (3) ◽  
pp. 289-303
Author(s):  
Qin Wan ◽  
Jing Zhu ◽  
Huijing Li ◽  
Lili Wang

Purpose Based on consumers’ geographic real-time locations, firms can utilize mobile targeting promotion (MTP) to target consumers through some applications embedded in mobile device. This paper aims to focus on two competing firms about how to make MTP strategies under asymmetric mobile accessibilities, i.e. the proportions of consumers who can be targeted by firms through apps are different. Design/methodology/approach This paper develops a game model for two competing firms. Aiming to maximizing profit, firms should consider how to utilize MTP strategies to trade off the benefit (expand market share) and the cost (intensive price competition). Findings The optimal MTP strategies and equilibrium prices have been presented under different scenarios. This paper verifies that asymmetry can make the firm with high mobile accessibility obtain extra profits. Furthermore, when unit targeting cost is relatively low, profit of the firm with low mobile accessibility increases first and decreases later with respect to its mobile accessibility. Practical implications Competing firms’ optimal MTP strategies and equilibrium prices are determined not only by unit targeting cost but also by consumers’ mobile accessibilities to firms. Firms have strong incentive to enlarge the mobile accessibility to procure more profit in monopoly context, but, under competing context, a higher mobile accessibility may not mean better for firm. Originality/value This is one of the few papers which study mobile targeting based on game theory considering unit targeting cost and asymmetric mobile accessibility simultaneously.


2016 ◽  
Vol 20 (5) ◽  
pp. 936-958 ◽  
Author(s):  
Les Coleman ◽  
R. Mitch Casselman

Purpose The paper aims to focus on a strategic approach for making trade-offs between knowledge and risk. Design/methodology/approach Knowledge and risk are viewed as organizational resources that have an inherent trade-off between them, so that optimal firm performance does not necessarily arise through greater accumulation of knowledge nor from reduced risk. This trade-off is represented as an efficient knowledge-risk frontier. The paper examines the dynamics of this frontier on organizational performance. Findings The concept of knowledge-risk strategy is presented which contends that non-probabilistic risk or uncertainty originates from gaps in knowledge. Research limitations implications The paper proposes a new line of research to understand decision-making in organizations, particularly those which focus on knowledge intensive products and services. Practical implications The paper proposes managerial approaches to improve organizational positioning relative to the efficient knowledge-risk frontier through greater awareness of contributors to knowledge gaps and risk in decision situations, as well as traditional strategic tools such as outsourcing. Originality/value The postulated link between risk and knowledge gaps establishes a knowledge-based view of firm risk and recognizes trade-offs for decisions regarding knowledge accumulation.


2015 ◽  
Vol 43 (2) ◽  
pp. 11-14 ◽  
Author(s):  
Robert M. Randall

Purpose – W. Chan Kim and Renée Mauborgne, professors of strategy at INSEAD and co-directors of the INSEAD Blue Ocean Strategy Institute, introduced and defined the theory and practice of blue ocean strategy – a unique methodology for creating commercially relevant new market space – in 2005. Despite the widespread interest in the concept, many managers still aren’t clear how blue ocean strategy differs from disruption theory, niche marketing, customer-focused innovation and other pioneering practices. Design/methodology/approach – To better understand how to use blue ocean strategy methodologies and tools, the interviewer asked the researchers to explain some of the underpinning concepts. Findings – Blue ocean strategy is about being first to get the customer offering right by linking innovation to value. Practical implications – A blue ocean strategist gains insights about reconstructing market boundaries not by looking at existing customers, but by exploring noncustomers. Originality/value – Managers will learn how to use blue ocean strategy to break the value-cost trade off, thereby opening up new market space.


2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Avik Sinha ◽  
Arnab Adhikari ◽  
Ashish Kumar Jha

PurposeThis study aims to analyze the socio-ecological policy trade-off caused by technological innovations in the post-COVID-19 era. The study outcomes are utilized to design a comprehensive policy framework for attaining sustainable development goals (SDGs).Design/methodology/approachStudy is done for 100 countries over 1991–2019. Second-generation estimation method is used. Innovation is measured by total factor productivity, environmental quality is measured by carbon dioxide (CO2) emissions and social dimension is captured by unemployment.FindingsInnovation–CO2 emissions association is found to be inverted U-shaped and innovation–unemployment association is found to be U-shaped.Research limitations/implicationsThe study outcomes show the conflicting impact of technological innovation leading to policy trade-off. This dual impact of innovation is considered during policy recommendation.Practical implicationsThe policy framework recommended in the study shows a way to address the objectives of SDG 8, 9 and 13 during post-COVID-19 period.Social implicationsPolicy recommendations in the study show a way to internalize the negative social externality exerted by innovation.Originality/valueThis study contributes to the literature by considering the policy trade-off caused by innovation and recommending an SDG-oriented policy framework for the post-COVID-19 era.


2018 ◽  
Vol 70 (2) ◽  
pp. 192-213 ◽  
Author(s):  
Cristina I. Font-Julian ◽  
José-Antonio Ontalba-Ruipérez ◽  
Enrique Orduña-Malea

Purpose The purpose of this paper is to determine the effect of the chosen search engine results page (SERP) on the website-specific hit count estimation indicator. Design/methodology/approach A sample of 100 Spanish rare disease association websites is analysed, obtaining the website-specific hit count estimation for the first and last SERPs in two search engines (Google and Bing) at two different periods in time (2016 and 2017). Findings It has been empirically demonstrated that there are differences between the number of hits returned on the first and last SERP in both Google and Bing. These differences are significant when they exceed a threshold value on the first SERP. Research limitations/implications Future studies considering other samples, more SERPs and generating different queries other than website page count (<site>) would be desirable to draw more general conclusions on the nature of quantitative data provided by general search engines. Practical implications Selecting a wrong SERP to calculate some metrics (in this case, website-specific hit count estimation) might provide misleading results, comparisons and performance rankings. The empirical data suggest that the first SERP captures the differences between websites better because it has a greater discriminating power and is more appropriate for webometric longitudinal studies. Social implications The findings allow improving future quantitative webometric analyses based on website-specific hit count estimation metrics in general search engines. Originality/value The website-specific hit count estimation variability between SERPs has been empirically analysed, considering two different search engines (Google and Bing), a set of 100 websites focussed on a similar market (Spanish rare diseases associations), and two annual samples, making this study the most exhaustive on this issue to date.


2007 ◽  
Vol 37 (1) ◽  
pp. 109-117 ◽  
Author(s):  
Nina Cole

PurposeThis study seeks to explore the incidence and severity of inconsistency in the application of disciplinary measures between supervisors, given the same disciplinary incident. Consistency is an important aspect of procedural fairness in disciplinary action, but it has received little empirical attention.Design/methodology/approachFour employee discipline scenarios were assigned at random to 130 real‐life supervisor‐employee dyads, who role‐played the scenario.FindingsThere was little consistency between supervisors in their decisions regarding disciplinary measures. Overall, having an informal discussion with the employee was the most common response. Only when specific instructions to impose a verbal or written warning were provided did most supervisors move beyond an informal discussion. Even when clear instructions were given, a substantial minority applied a less severe disciplinary outcome.Research limitations/implicationsEven in this role‐play situation, where “real life” variables such as union grievances that could lead to the dilution of disciplinary action were not present, supervisors were generally lenient regarding employee discipline.Practical implicationsThe trade‐off between the objectives of consistency and consideration of individual circumstances presents a serious challenge to practising supervisors.Originality/valueThis is a rare empirical paper exploring the issue of consistency in employee discipline.


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