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The Handbook of Road Safety Measures
Type: Book
ISBN: 978-1-84855-250-0

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Article
Publication date: 13 June 2016

M. Arif Wani and Romana Riyaz

The most commonly used approaches for cluster validation are based on indices but the majority of the existing cluster validity indices do not work well on data sets of…

Abstract

Purpose

The most commonly used approaches for cluster validation are based on indices but the majority of the existing cluster validity indices do not work well on data sets of different complexities. The purpose of this paper is to propose a new cluster validity index (ARSD index) that works well on all types of data sets.

Design/methodology/approach

The authors introduce a new compactness measure that depicts the typical behaviour of a cluster where more points are located around the centre and lesser points towards the outer edge of the cluster. A novel penalty function is proposed for determining the distinctness measure of clusters. Random linear search-algorithm is employed to evaluate and compare the performance of the five commonly known validity indices and the proposed validity index. The values of the six indices are computed for all nc ranging from (nc min, nc max) to obtain the optimal number of clusters present in a data set. The data sets used in the experiments include shaped, Gaussian-like and real data sets.

Findings

Through extensive experimental study, it is observed that the proposed validity index is found to be more consistent and reliable in indicating the correct number of clusters compared to other validity indices. This is experimentally demonstrated on 11 data sets where the proposed index has achieved better results.

Originality/value

The originality of the research paper includes proposing a novel cluster validity index which is used to determine the optimal number of clusters present in data sets of different complexities.

Details

International Journal of Intelligent Computing and Cybernetics, vol. 9 no. 2
Type: Research Article
ISSN: 1756-378X

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Abstract

Details

The Handbook of Road Safety Measures
Type: Book
ISBN: 978-1-84855-250-0

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Book part
Publication date: 25 November 2019

Ahoo Tabatabai

Using queer/crip theory as a frame, I examine the narratives of 17 mothers raising children with disabilities.

Abstract

Purpose/Methods/Approach

Using queer/crip theory as a frame, I examine the narratives of 17 mothers raising children with disabilities.

Findings

Results show that the mothers’ narratives of an imagined future for their children often involve the idea of success in terms of production and reproduction. However, some mothers do question this idea of normalcy, challenge deeply seated ideas about neoliberal inclusion, and reframe disability as a different way of existing as opposed to a deficient way of being.

Implications/Value

The focus of this paper is on how mothers imagine different kinds of social arrangements. Some mothers, instead of embracing success as narrowly defined under neoliberalism, challenge the idea and instead offer queer narratives of parenting. This study illustrates how counternarratives can be constructed to resist prevailing narratives of disability as deficiency.

Details

New Narratives of Disability
Type: Book
ISBN: 978-1-83909-144-5

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Article
Publication date: 5 March 2021

Youcef Oussama Fourar, Mebarek Djebabra, Wissal Benhassine and Leila Boubaker

The assessment of patient safety culture (PSC) is a major priority for healthcare providers. It is often realized using quantitative approaches (questionnaires) separately…

Abstract

Purpose

The assessment of patient safety culture (PSC) is a major priority for healthcare providers. It is often realized using quantitative approaches (questionnaires) separately from qualitative ones (patient safety culture maturity model (PSCMM)). These approaches suffer from certain major limits. Therefore, the aim of the present study is to overcome these limits and to propose a novel approach to PSC assessment.

Design/methodology/approach

The proposed approach consists of evaluating PSC in a set of healthcare establishments (HEs) using the HSOPSC questionnaire. After that, principal component analysis (PCA) and K-means algorithm were applied on PSC dimensional scores in order to aggregate them into macro dimensions. The latter were used to overcome the limits of PSC dimensional assessment and to propose a quantitative PSCMM.

Findings

PSC dimensions are grouped into three macro dimensions. Their capitalization permits their association with safety actors related to PSC promotion. Consequently, a quantitative PSC maturity matrix was proposed. Problematic PSC dimensions for the studied HEs are “Non-punitive response to error”, “Staffing”, “Communication openness”. Their PSC maturity level was found underdeveloped due to a managerial style that favors a “blame culture”.

Originality/value

A combined quali-quantitative assessment framework for PSC was proposed in the present study as recommended by a number of researchers but, to the best of our knowledge, few or no studies were devoted to it. The results can be projected for improvement and accreditation purposes, where different PSC stakeholders can be implicated as suggested by international standards.

Details

International Journal of Health Governance, vol. 26 no. 2
Type: Research Article
ISSN: 2059-4631

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Article
Publication date: 4 May 2012

Amine Jaafar, Bruno Sareni and Xavier Roboam

A wide number of applications requires classifying or grouping data into a set of categories or clusters. The most popular clustering techniques to achieve this objective…

Abstract

Purpose

A wide number of applications requires classifying or grouping data into a set of categories or clusters. The most popular clustering techniques to achieve this objective are K‐means clustering and hierarchical clustering. However, both of these methods necessitate the a priori setting of the cluster number. The purpose of this paper is to present a clustering method based on the use of a niching genetic algorithm to overcome this problem.

Design/methodology/approach

The proposed approach aims at finding the best compromise between the inter‐cluster distance maximization and the intra‐cluster distance minimization through the silhouette index optimization. It is capable of investigating in parallel multiple cluster configurations without requiring any assumption about the cluster number.

Findings

The effectiveness of the proposed approach is demonstrated on 2D benchmarks with non‐overlapping and overlapping clusters.

Originality/value

The proposed approach is also applied to the clustering analysis of railway driving profiles in the context of hybrid supply design. Such a method can help designers to identify different system configurations in compliance with the corresponding clusters: it may guide suppliers towards “market segmentation”, not only fulfilling economic constraints but also technical design objectives.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 31 no. 3
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 1 November 1976

Eighteen executives from industry take time off to shoot rapids, climb mountains and go skin diving. It all sounds a bit gimmicky — a sort of adventure playground for…

Abstract

Eighteen executives from industry take time off to shoot rapids, climb mountains and go skin diving. It all sounds a bit gimmicky — a sort of adventure playground for adults. But after spending a week on the course — devised by Bulmers' chairman, Peter Prior — and speaking to the men taking part, Leslie Kenton reports that the idea is a valuable means of developing a manager's leadership qualities. Not to mention his physique.

Details

Industrial Management, vol. 76 no. 11
Type: Research Article
ISSN: 0007-6929

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Article
Publication date: 7 January 2021

Alekh Gour, Shikha Aggarwal and Mehmet Erdem

The dynamic yet volatile nature of tourism and travel industry in a competitive environment calls for enhanced marketing intelligence and analytics, especially for those…

Abstract

Purpose

The dynamic yet volatile nature of tourism and travel industry in a competitive environment calls for enhanced marketing intelligence and analytics, especially for those entities with limited marketing budgets. The past decade has witnessed an increased use of user-generated content (UGC) analysis as a marketing tool to make better informed decisions. Likewise, textual data analysis of UGC has gained much attention among tourism and hospitality scholars. Nonetheless, most of the scholarly works have focused on the singular application of an existing method or technique rather than using a multi-method approach. The purpose of this study is to propose a novel Web analytics methodology to examine online reviews posted by tourists in real time and assist decision-makers tasked with marketing strategy and intelligence.

Design/methodology/approach

For illustration, the case of tourism campaign in India was undertaken. A total of 305,298 reviews were collected, and after filtering, 276,154 reviews were qualified for analysis using a string of models. Descriptive charts, sentiment analysis, clustering, topic modeling and machine learning algorithms for real-time classification were applied.

Findings

Using big data from TripAdvisor, a total of 145 tourist destinations were clustered based on tourists’ perceptions. Further exploration of each cluster through topic modeling was conducted, which revealed interesting insights into satisfiers and dissatisfiers of different clusters of destinations. The results supported the use of the proposed multi-method Web-analytics approach.

Practical implications

The proposed machine learning model demonstrated that it could provide real-time information on the sentiments in each incoming review about a destination. This information might be useful for taking timely action for improvisation or controlling a service situation.

Originality/value

In terms of Web-analytics and UGC, a comprehensive analytical model to perform an end-to-end understanding of tourist behavior patterns and offer the potential for real-time interpretation is rarely proposed. The current study not only proposes such a model but also offers empirical evidence for a successful application. It contributes to the literature by providing scholars interested in textual analytics a step-by-step guide to implement a multi-method approach.

Details

International Journal of Contemporary Hospitality Management, vol. 33 no. 2
Type: Research Article
ISSN: 0959-6119

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Article
Publication date: 16 February 2010

Vesa P. Taatila

There is a constant need to produce more entrepreneurial graduates from higher education institutions. This paper aims to present and discuss several successful cases of…

Abstract

Purpose

There is a constant need to produce more entrepreneurial graduates from higher education institutions. This paper aims to present and discuss several successful cases of entrepreneurial learning environments in order to suggest some important aspects that higher education institutions should consider.

Design/methodology/approach

The paper presents a literature review and four previously published case studies. These are used for suggesting a hypothesis for further study.

Findings

The pedagogical challenge is that entrepreneurial competencies are more holistic and psychologically oriented than traditional subject‐matter skills. Entrepreneurial skills are learned via pragmatic real life development projects. The paper presents several successful cases of entrepreneurial education programmes in higher education institutions. It proposes an entrepreneurial learning cycle that supports the development of entrepreneurial competencies.

Research limitations/implications

The evidence presented is case‐based, and the actual results are very difficult to measure. Further large‐scale research is needed to verify or falsify the hypothesis.

Originality/value

Entrepreneurial education in higher education institutions should be fully reviewed and changed. Clear goals should be set regarding the development of graduates who are more entrepreneurially oriented. Furthermore, the educational process will require much restructuring to enhance skill development for entrepreneurship.

Details

Education + Training, vol. 52 no. 1
Type: Research Article
ISSN: 0040-0912

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Article
Publication date: 4 July 2016

Jori Reijula, Emmi Reijula and Kari Reijula

Hospitals in the developed countries have been subjected to increasing economic pressure. Thus, several hospitals have been forced to improve their production efficiency…

Abstract

Purpose

Hospitals in the developed countries have been subjected to increasing economic pressure. Thus, several hospitals have been forced to improve their production efficiency while coping with limited resources. This paper aims to illustrate challenges and insight associated with health care (HC) facility design (FD) in two publicly funded hospitals.

Design/methodology/approach

In this study, 14 interviewees from two Finnish university hospitals were interviewed. Both hospitals had implemented Lean methods and recently undergone rigorous renovation projects and were seen as ideal study targets.

Findings

Both hospitals had managed to carry out successful indoor environment design. However, logistics, navigation, health information technology, scheduling, budgeting and outsourcing challenges had arisen. An outpatient care approach and customer-driven operational needs are beneficial and guide FD in the target hospitals. Lean thinking offers the necessary fundamental framework for integrating operational design as a part of FD.

Research limitations/implications

Due to the relatively small sample size of the interviewees in this study, post occupancy evaluations in a larger target group should be conducted in the present hospitals. Furthermore, the communication with the interviewees may be considered qualitative due to the research approach based on interviews and content analysis.

Practical implications

Hospital design should focus on developing aesthetic, durable and adaptable facilities that support work processes. The hospital management needs to ensure that architects and designers possess enough HC expertize and are able to interact with clinicians. FD projects should be led and organized more systematically, while project communication between all stakeholders should be more transparent and facilitated by – preferably – a hospital staff member. Furthermore, an organized forum for HC FD should be used for sharing knowledge. The clinicians must be thoroughly oriented to the new work environment and processes.

Originality/value

This paper brings forth numerous crucial challenges and insight related to management of FD in two university hospitals.

Details

Journal of Facilities Management, vol. 14 no. 3
Type: Research Article
ISSN: 1472-5967

Keywords

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