Search results

The spatial and non-spatial attributes are the two important characteristics of a spatial point, which belong to the two different attribute domains in many Geographic Information Systems applications. The dual clustering algorithms take into account both spatial and non-spatial attributes, where a cluster has not only high proximity in spatial domain but also high similarity in non-spatial domain. In a geographical dataset, traditional dual spatial clustering algorithms discover homogeneous spatially adjacent clusters suffering from the between-cluster inhomogeneity where those spatial points are described in non-spatial domain. To overcome this limitation, a novel dual-domain clustering algorithm (DDCA) is proposed by considering both spatial proximity and attribute similarity with the presence of inhomogeneity.

In this algorithm, Delaunay triangulation with edge length constraints is first employed to construct spatial proximity relationships amongst objects. Then, a clustering strategy based on statistical change detection is designed to obtain clusters with similar attributes.

The effectiveness and practicability of the proposed algorithm are illustrated by experiments on both simulated datasets and real spatial events. It is found that the proposed algorithm can adaptively and accurately detect clusters with spatial proximity and similar non-spatial attributes under the consideration of inhomogeneity.

Traditional dual spatial clustering algorithms discover homogeneous spatially adjacent clusters suffering from the between-cluster inhomogeneity where those spatial points are described in non-spatial domain. The research here is a contribution to developing a dual spatial clustering method considering both spatial proximity and attribute similarity with the presence of inhomogeneity. The detection of these clusters is useful to understand the local patterns of geographical phenomena, such as land use classification, spatial patterns research and big geo-data analysis.

Mental health care in England has been subject to a great deal of scrutiny in recent years for its equality of access, experience and outcome. Five years of the Delivering Race Equality programme produced momentum, learning and improvements. It is clear, though, that efforts need to consider a continuous quality improvement approach and consciously use all new initiatives to further drive more equal services. A current initiative in England is the care clusters model for mental health, along with associated moves to commission services on a payment by results basis. This paper examines these developments and the possible implications for supporting greater equality in mental health care.

There are two types of medium access control (MAC) layer power‐saving (PS) protocols for IEEE 802.11‐based mobile ad hoc networks: synchronous and asynchronous ones. This paper seeks to propose a hybrid PS protocol to take advantages of both types of protocols.

The protocol utilizes the concept of dual‐channel and dual‐transmission‐range clustering. It divides all the hosts into clusters. Each cluster has a head and all the heads are organized as a virtual backbone to help route data. The protocol also utilizes the cluster head dismissal mechanism to avoid the ever‐increasing of cluster heads and to adapt to topology changing.

Simulation results demonstrate that the proposed protocol is more power‐efficient and more scalable than related protocols.

The proposed protocol is applicable to MANETs composed of hosts with single IEEE 802‐11 network interface card.

The paper shows how small firms perceive the pathways through which access to and adoption of superfast broadband-enabled resources strengthen business performance. Improvements to broadband infrastructure do not automatically lead to adoption of opportunities made available through the broadband resource. Then, interventions can be used to alert small firms to new opportunities. However, the quality of interventions in terms of education and digital audits can be better targeted with information available on how small firms perceive the benefits from broadband access and whether these perceptions are reflected in business performance outcomes.

Data are used from the Digital Maturity Survey from Wales. The study uses principal component analysis and a dual stage cluster approach to show how SMEs believe they are benefitting from broadband access. These belief-based perceptions of broadband inferred business benefits are tested against business performance variables.

The analysis shows variation in SME perceptions of the benefits of broadband-enabled services. This study reveals a cluster of firms which perceived routes to business value in terms of variables linked to security and risk management, and then more commonly held notions linked to communication, competition enhancement and productivity.

While the research literature points to Information and Communication Technology (ICT) resources (ICT investment and skills) and use (digital applications), leading to new to business value improvements, this study suggests less work has sought to identify the critical themes identified by business owners in explaining how ICT resources and use tie to observed business performance. The study identifies these critical themes. The analysis suggests that these critical themes in terms of business value benefits as perceived by business owners can be summarised in terms of communication and competition benefits, and security and risk related benefits. The findings have a series of implications for interventions in the space.

This study aimed to identify subgroups of esports players based on their gaming behavior patterns across game genres and compare self-efficacy, social efficacy, loneliness and three dimensions of quality of life between these subgroups.

324 participants were recruited from prolific academic to complete an online survey. We employed latent profile analysis (LPA) to identify subgroups of esports players based on their behavioral patterns across genres. Additionally, a one-way multivariate analysis of covariance (MANCOVA) was conducted to test the association between cluster memberships and development and well-being outcomes, controlling for age and gender as covariates.

LPA analysis identified five clusters (two single-genre gamer groups, two multigenre gamer groups and one all-genre gamer group). Univariate analyses indicated the significant effect of the clusters on social efficacy, psychological health and social health. Pairwise comparisons highlighted the salience of the physical enactment-plus-sport simulation genre group in these outcomes.

This study contributes to the understanding of the development and well-being benefits experienced by various esports consumers, as well as the role of specific gameplay in facilitating targeted outcomes among these consumer groups.

The purpose of this paper is to examine the effectiveness of voluntary governance mechanisms in Australia.

This study identifies similar choices of corporate governance by Australian firms and tests the effectiveness of the choices made based on the earnings quality of reported firms. Cluster analysis is conducted using governance best practice variables, firm size and an earnings quality variable.

This paper’s results support the voluntary governance approach for smaller firms, but suggest that mandatory governance requirements could be beneficial for larger firms. Evidence suggests that a benefit accrues for larger firms with the adoption of governance best practice. Cluster analysis indicates that larger firms tend to exhibit higher levels of adoption of governance best practice than smaller firms.

This paper adds to the literature by providing important information regarding the suitability of adoption of voluntary governance mechanisms in Australia.

This paper aims to critically examine the emerging policy agenda of payment by results (PbR) and care clusters in order to identify how to engage with it to ensure it is supportive of social inclusion and recovery.

Care clusters and PbR for mental health care are critically examined.

There is scope in the ongoing development of care clusters and associated pathways to continue the progressive developments towards recovery and social inclusion in the commissioning and delivery of mental health care, but they need to be nurtured and actively pursued.

The care clusters and developments building on them provide scope for supporting social inclusion and recovery practice, but also some risks; hence, those with an interest in furthering such practice need to engage now locally and nationally with care clusters developments.

PbR is being pursued as a policy for commissioning mental health care in England, based on a model of care clusters. This paper discusses the move to PbR and its possible implications for the recovery and social inclusion agenda.

Perceived environmental uncertainty (PEU) is a foundational concept in organization studies. The PEU typologies used in organizational research were developed using private sector managers. But, do public sector managers perceive the same uncertainty sources? We asked public sector managers in Hong Kong to identify and group uncertainty sources facing their organizations. Multidimensional scaling and cluster analysis yielded classes of uncertainty sources that differ from those developed using private sector managers.

How and whether the rhythm, synchronization and sequence of firms' M&A and alliance activity over time impact firm performance is our core question. We seek to advance a temporal lens in the M&A and alliance discourse by explicitly incorporating time-associated theories, constructs and methods. A temporal view of M&A and alliance activity requires strategists to study fundamental questions related to when and under what conditions firms should accelerate, slow down and coordinate their M&A and alliance initiatives, whether firms' trajectory of M&A and alliance have discernible and distinctive patterns over time, and whether these initiatives demonstrate a temporal pattern that becomes an integrated part within firms' M&A and alliance routines that create a time-based source of competitive advantage. Using a sample of 57 small to medium-size firms in the global specialized pharmaceutical industry and their M&A and alliance activities for 19 years we find support for our temporal-based hypotheses.

Free and open-source software (FOSS) has been used worldwide because of the advantages of user control, cost-saving, flexibility, openness, freedom, more security and better stability. The purpose of this study is to explore the status quo of educational application of FOSS and the trends from international perspectives and its implications for higher education in Hong Kong.

The method of cluster analysis was used in this study. The Web of Science database was used as the data source and all relevant literature for the year 2010–2020 on the theme of “FOSS” was collected for analysis. The information visualization software CiteSpace was used for citation visualization analysis, revealing the research results of FOSS worldwide, including hot spots and development trends.

This paper found that FOSS has become an important research area and is playing an important role in the reform and development of education. Meanwhile, the development and application of FOSS have regional imbalances and strong differentiation, including the educational sector. The paper also found that although FOSS has entered the stage of interdisciplinary development, the research and development of FOSS in the field of education is insufficient, which poses a huge challenge to decision-makers, teachers and students.

Implications for higher education in Hong Kong including: attach importance to and vigorously promote FOSS research and practice to benefit more teachers and students; teachers and students need to be trained for acquiring the awareness and skills of FOSS applications and formulate different strategies; the government should provide greater support to formulate and implement a short and middle-term development plan to facilitate the application of FOSS; and Hong Kong higher education institutions may strengthen exchanges and cooperation with counterparts around the world to jointly promote the development of FOSS. It is hoped that the findings will provide a reference for the study and application of FOSS in higher education in Hong Kong.