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Article
Publication date: 2 February 2015

Mohammad Saleh Owlia, Mohammad Saber Fallah Nezhad and Mohesn Sheikh Sajadieh

– The purpose of this paper is to propose a new method based on goodness of fit tests for shift detection problems.

Abstract

Purpose

The purpose of this paper is to propose a new method based on goodness of fit tests for shift detection problems.

Design/methodology/approach

In this method, although the distribution of gathered data from the process is the subject of control, but any out-of-control signal could also be generalized to the overall state of the process including the parameters of the distribution.

Findings

Results of simulation study denote that among goodness of fit tests, the χ2 test has a better performance than the Kolmogorov-Smirnov test in detecting shifts of process. Also comparison of proposed method with traditional methods denotes that, proposed method generally has smaller probabilities of first and second type errors.

Originality/value

To the best of author’s knowledge, no attention has previously been paid to application of goodness of fit tests in process control.

Details

International Journal of Quality & Reliability Management, vol. 32 no. 2
Type: Research Article
ISSN: 0265-671X

Keywords

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Article
Publication date: 11 June 2018

Luca Vincenzo Ballestra, Stefano Fontana, Veronica Scuotto and Silvia Solimene

The purpose of this paper is to propose a new statistical approach to evaluate complex open innovation projects on a quantitative basis. In certain circumstances, open…

Abstract

Purpose

The purpose of this paper is to propose a new statistical approach to evaluate complex open innovation projects on a quantitative basis. In certain circumstances, open innovation entails a radical change of policy that involves various different functions of a company such as R&D, production, and management over a period of years and gives rise to mechanisms of mutual interaction with several business partners, such as collaboration with other companies, universities and R&D institutions, and new suppliers. Then, the question arises of how to measure the impact of such complex open innovation processes on the overall performances of companies.

Design/methodology/approach

A holistic case study is applied to analyze the effect of open innovation projects on a corporate company’s stock price dynamics. The scope is to identify two different scenarios pre- and post-adoption of an open innovation model by a multinational company, Fujifilm. In particular, a stochastic model, namely the log-normal model, is applied along with three statistical tests: Kolmogorov-Smirnov, Cramer von Mises, and F-test for equal variances, in order to verify if the adoption of an open innovation model causes any significant change in the stock price dynamics of the corporate company.

Findings

From the findings emerges evidence that open innovation projects have a moderate effect on Fujifilm’s stock price dynamics, but a greater improvement of the perception of Fujifilm’s stock value. This enhances the management and financial literature review by offering a novel, empirical perspective on the effect of the adoption of an open innovation model on a corporate company’s stock price dynamics.

Research limitations/implications

This research is limited to a single case study, but it can be extended to other stock market companies and therefore improve on the present study.

Originality/value

An original application of Kolmogorov-Smirnov tests to detect and measure the differences between the two regimes of pre-open innovation and post-innovation regimes.

Details

Management Decision, vol. 56 no. 6
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 1 April 2004

Sofia V. Dermisi

This paper focuses on a comparison between Internet and traditionally presented and transacted office properties for sale in Boston/US and London/UK. This comparison…

Abstract

This paper focuses on a comparison between Internet and traditionally presented and transacted office properties for sale in Boston/US and London/UK. This comparison provides a better understanding of the effect of the Internet on the real estate office market based on a data‐driven, rather than an opinion‐based, study. The study of both cities for a 6 month period, from September 2000 to February 2001, indicated that small properties are more likely to be sold through the Internet than in the traditional office market. Moreover, in both cities, there are differences in the distributions of price per square foot and area in square feet between Internet and traditionally transacted office properties.

Details

Property Management, vol. 22 no. 2
Type: Research Article
ISSN: 0263-7472

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Article
Publication date: 1 January 2021

Mahdi Salehi and Arash Arianpoor

The study's main objective is to identify business sustainability performance indicators and analyze the mutual relationship between different business sustainability…

Abstract

Purpose

The study's main objective is to identify business sustainability performance indicators and analyze the mutual relationship between different business sustainability components in Iran.

Design/methodology/approach

To achieve research objectives, the 125 indicators of Business Sustainability Performance in Arianpoor and Salehi (2020) were used. For data collection, a questionnaire is designed and developed. Moreover, the Delphi method is used to determine the indicators related to business sustainability performance. Accordingly, we attempted to send the questionnaire to 346 experts and qualified opinion-leaders in the study area to utilize their opinions in our project. Finally, 108 questionnaires were analyzed statistically.

Findings

In this study, the confirmatory factor analysis (CFA), binomial test, one sample t-test, one sample Kolmogorov–Smirnov test and Kruskal–Wallis test are used. The results of statistical tests show that among 125 proposed indicators, 11 indicators were eliminated. Hence, to assess business sustainability performance in the listed firm on the Tehran Stock Exchange, 114 indicators were analyzed. To achieve the study's objective, the relationship between financial and non-financial sustainability performance and their effect is analyzed using the Smart PLS Software. Findings indicate that there is a mutual relationship between financial and non-financial sustainability performance in Iran. There is also a relationship between the operational component and research component and non-financial sustainability performance. In contrast, as for the growth component and non-financial sustainability performance, there is no significant relationship. Also, root means squared error (RMSE) values suggest a reasonable model-data fit.

Originality/value

The type and characteristics of different regions have a significant role in the reporting and differ according to different economic conditions. The discussion of business sustainability and its reporting is important; therefore, essential indicators were identified in this study. In addition, all aspects of sustainability performance are considered cohesively to analyze the mutual relationship between different components of sustainability performance and to be able to make more appropriate decisions in future studies about performance evaluation and reporting using the results of this paper.

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Article
Publication date: 3 September 2018

Rosembergue Pereira Souza, Luiz Fernando Rust da Costa Carmo and Luci Pirmez

The purpose of this paper is to present a procedure for finding unusual patterns in accredited tests using a rapid processing method for analyzing video records. The…

Abstract

Purpose

The purpose of this paper is to present a procedure for finding unusual patterns in accredited tests using a rapid processing method for analyzing video records. The procedure uses the temporal differencing technique for object tracking and considers only frames not identified as statistically redundant.

Design/methodology/approach

An accreditation organization is responsible for accrediting facilities to undertake testing and calibration activities. Periodically, such organizations evaluate accredited testing facilities. These evaluations could use video records and photographs of the tests performed by the facility to judge their conformity to technical requirements. To validate the proposed procedure, a real-world data set with video records from accredited testing facilities in the field of vehicle safety in Brazil was used. The processing time of this proposed procedure was compared with the time needed to process the video records in a traditional fashion.

Findings

With an appropriate threshold value, the proposed procedure could successfully identify video records of fraudulent services. Processing time was faster than when a traditional method was employed.

Originality/value

Manually evaluating video records is time consuming and tedious. This paper proposes a procedure to rapidly find unusual patterns in videos of accredited tests with a minimum of manual effort.

Details

International Journal of Quality & Reliability Management, vol. 35 no. 8
Type: Research Article
ISSN: 0265-671X

Keywords

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Article
Publication date: 30 November 2010

Aristeidis Meletiou

Libraries constitute a highly developing area as they always enrich their offered services in order to satisfy users' expectations. One of the most important factors in…

Abstract

Purpose

Libraries constitute a highly developing area as they always enrich their offered services in order to satisfy users' expectations. One of the most important factors in customization strategies and improvement of individual services must be user preferences. However, customization requires an in‐depth analysis of user preferences and an evaluation of future behavior. The main objective of this paper is to present a framework for analyzing changes of user preferences in a library.

Design/methodology/approach

The paper presents detailed results of two independent user satisfaction surveys conducted in an interval of five years in the Library of the Technical University of Crete and analyzes them using a proposed framework. However, the framework can be applied in every modern library. The analyses are based on non‐parametric statistical techniques and a multicriteria satisfaction analysis method, which is a multicriteria preference disaggregation approach.

Findings

Overall, user judgments for both surveys show that 50‐70 percent of users are “very satisfied” or “satisfied”. The percentage of “satisfied” users increased from 2005 to 2010 (almost 18 percent) and “very satisfied” remained almost the same.

Practical implications

Results are mainly focused on the evaluation of potential trends of user preferences. Furthermore, results of a benchmarking analysis are also presented, based on the evolution of satisfaction levels for the quality characteristics of the offered services.

Originality/value

The goal of the presented study and proposed framework and methodology is to help library decision makers track changes to user preferences and improve the provided services according to those preferences.

Details

Performance Measurement and Metrics, vol. 11 no. 3
Type: Research Article
ISSN: 1467-8047

Keywords

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Article
Publication date: 1 December 1999

Ming‐Yueh Tsay

This study explores the in‐house use age distribution of journals in the library of Veterans General Hospital, Taipei, Taiwan, their citation age distribution and the…

Abstract

This study explores the in‐house use age distribution of journals in the library of Veterans General Hospital, Taipei, Taiwan, their citation age distribution and the difference between them. The use study employed the sweep method and the study period lasted for six months. The citation age of each journal in this study was based on the data listed in the Science Citation Index, Journal Citation Reports, 1993. The results of this study illustrate that the use age distribution for the mean of all the journals is an exponentially decaying curve. On the other hand, the citation age distributions show a sharp initial rise from age one to three or four years and then fall off in a sort of exponential decay; and the age of maximum citation is typically three years. About 80 per cent of uses are attributed to journals less than ten years old, while these journals contribute about 70 per cent of total citations. The Kolmogorov‐Smirnov two‐sample test indicates that the use age distribution does not fit the citation age distribution.

Details

Journal of Documentation, vol. 55 no. 5
Type: Research Article
ISSN: 0022-0418

Keywords

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Article
Publication date: 7 August 2017

Puspa Amri, Eric M.P. Chiu, Greg Richey and Thomas D. Willett

The purpose of this paper is to test whether financial crises themselves provide some degree of ex post discipline. In other words, is there learning from the mistakes…

Abstract

Purpose

The purpose of this paper is to test whether financial crises themselves provide some degree of ex post discipline. In other words, is there learning from the mistakes associated with crises? The authors test this hypothesis on credit growth, a frequent contributor to banking crises.

Design/methodology/approach

The study uses statistical tests (comparison of means) on a sample of 72 banking crises, the onset of which occurred between 1980 and 2008. Tests for significance of the difference are conducted using Kolmogorov–Smirnov equality in distribution tests.

Findings

The results show that real credit growth fell substantially (relative to average) by about 8 per cent points from pre- to post-crisis periods, and that average banking regulation and supervision strengthens after a crisis.

Originality/value

This paper provides empirical support for the proposition that while financial markets may fail to give sufficient warning signals before a financial crisis, they may discipline governments to undertake reforms in the aftermath of a crisis.

Details

Journal of Financial Economic Policy, vol. 9 no. 3
Type: Research Article
ISSN: 1757-6385

Keywords

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Article
Publication date: 9 March 2010

Larry D. Su

The purpose of this paper is to investigate whether, and to what extent, corporate diversification into related and unrelated businesses affects capital structure choices…

Abstract

Purpose

The purpose of this paper is to investigate whether, and to what extent, corporate diversification into related and unrelated businesses affects capital structure choices, and whether ownership structure is germane to the understanding of corporate diversification strategies and debt‐equity financing choices.

Design/methodology/approach

Univariate approaches include the parametric two‐sample ttest, non‐parametric Kolmogorov‐Smirnov test and Kruskal‐Wallis rank test, and cluster analysis. Multivariate approaches include panel data regressions to identify the sign and magnitude of the effect of diversification on capital structure, after controlling for a number of industry and firm characteristics as suggested in the literature.

Findings

Corporate diversification into related or unrelated industries has opposite effects on capital structure, after controlling for ownership structure and corporate governance mechanisms. Consistent with the prediction of organizational economics, an increase in the degree of business relatedness is associated with a reduction in debt while an increase in business unrelatedness is associated with an increase in debt. In addition, there is strong evidence that government‐controlled firms use less debt financing and that government ownership weakens the positive relationship between unrelated diversification and leverage. The results are robust to different measures of capital structure.

Originality/value

Traditional finance literature has not been able to provide conclusive evidence on what affects corporate capital structure decisions. This paper shows that a corporate strategy perspective, with its emphasis on a managerial decision‐making process, can provide a behavioral basis for understanding capital structure choices.

Details

Management Decision, vol. 48 no. 2
Type: Research Article
ISSN: 0025-1747

Keywords

Content available
Article
Publication date: 15 July 2019

Diego Aparecido Wolfshorndl, Mauro Vivaldini and João Batista de Camargo Junior

From the perspective of the supply chain risk management (SCRM), this paper addresses the effects of a hybrid production system (make-to-stock and make-to-order) in order…

Abstract

Purpose

From the perspective of the supply chain risk management (SCRM), this paper addresses the effects of a hybrid production system (make-to-stock and make-to-order) in order to know which risks can impact the production planning process at a large automaker in Brazil. Through the correlation of these themes, the purpose of this paper is to understand the relevant risks to the supply chain (SC).

Design/methodology/approach

Before the field research, a theoretical approach was made on two themes. After theoretical analysis of a case study on the automaker and data collection, the work used the Pearson’s product moment correlation (r) and χ2 and Kolmogorov–Smirnov tests to assess the risk factors raised by the interviewed professionals, thus characterizing a mixed methodological approach (i.e. qualitative and quantitative).

Findings

It was evidenced that many risks are the result of functional failures, such as input of incorrect information in the system, and many are inherent to managerial decisions when procedures and different paths of production are adopted. Additionally, it has been proven that the adoption of a hybrid production planning approach does not increase the risks to the SC and that the identified risks do not necessarily are included within the scope of SCRM.

Originality/value

This study is characterized by an approach which combines SCRM and hybrid production system.

Details

Revista de Gestão, vol. 26 no. 3
Type: Research Article
ISSN: 2177-8736

Keywords

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