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1 – 10 of 32
Article
Publication date: 13 June 2016

Marwa Naili, Anja Habacha Chaibi and Henda Hajjami Ben Ghezala

Topic segmentation is one of the active research fields in natural language processing. Also, many topic segmenters have been proposed. However, the current challenge of…

Abstract

Purpose

Topic segmentation is one of the active research fields in natural language processing. Also, many topic segmenters have been proposed. However, the current challenge of researchers is the improvement of these segmenters by using external resources. Therefore, the purpose of this paper is to integrate study and evaluate a new external semantic resource in topic segmentation.

Design/methodology/approach

New topic segmenters (TSS-Onto and TSB-Onto) are proposed based on the two well-known segmenters C99 and TextTiling. The proposed segmenters integrate semantic knowledge to the segmentation process by using a domain ontology as an external resource. Subsequently, an evaluation is made to study the effect of this resource on the quality of topic segmentation along with a comparative study with related works.

Findings

Based on this study, the authors showed that adding semantic knowledge, which is extracted from a domain ontology, improves the quality of topic segmentation. Moreover, TSS-Ont outperforms TSB-Ont in terms of quality of topic segmentation.

Research limitations/implications

The main limitation of this study is the used test corpus for the evaluation which is not a benchmark. However, we used a collection of scientific papers from well-known digital libraries (ArXiv and ACM).

Practical implications

The proposed topic segmenters can be useful in different NLP applications such as information retrieval and text summarizing.

Originality/value

The primary original contribution of this paper is the improvement of topic segmentation based on semantic knowledge. This knowledge is extracted from an ontological external resource.

Details

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

Keywords

Open Access
Article
Publication date: 31 December 2017

Woosuk Yang

This paper considers locating congested fast charging stations (FCSs) and deploying chargers in a stochastic environment, while the related studies have predominantly focused on…

Abstract

This paper considers locating congested fast charging stations (FCSs) and deploying chargers in a stochastic environment, while the related studies have predominantly focused on problems in deterministic environments. Reducing the inconvenience caused by congestion at FCSs is an important challenge for FCS service provider. This is the underlying motivation for this study to consider a problem for FCS network design with the congestion restriction in a stochastic environment. We proposed a maximal coverage problem subject to budget constraints and a congestion restriction in order to maximize the demand coverage. With the derivation of the congestion restriction in the considered stochastic environment, the problem is formulated into an integer programming model. A real-life case study is conducted and managerial implications are drawn from its results.

Details

Journal of International Logistics and Trade, vol. 15 no. 3
Type: Research Article
ISSN: 1738-2122

Keywords

Article
Publication date: 30 October 2023

Terence Y.M. Lam, Taylah O. Hasell and Malvern L.D.B. Tipping

Referring to “behavioural finance” and “normative model” theories, this study explores the relative significance of behavioural heuristic biases in the investment decisions of…

Abstract

Purpose

Referring to “behavioural finance” and “normative model” theories, this study explores the relative significance of behavioural heuristic biases in the investment decisions of real estate investment trusts (REITs) when compared with the conventional normative decision factors, with an ultimate aim to identify the significant behavioural factors that should be avoided to ensure rational asset acquisitions and market efficiency.

Design/methodology/approach

A triangulation approach was adopted. Qualitative multiple case studies were conducted, with four cases selected from Australian and New Zealand REITs across the industry, to identify what normative and behavioural finance factors are involved in investment decisions. This formed the basis for the subsequent expert review survey to explore how significant the behavioural factors were manifested in the judgement when compared with the normative factors.

Findings

Three out of four theoretical behavioural factors manifested themselves in the investment decisions: investor sentiment, anchoring factors and overconfidence. The overall impact of these three behavioural factors was that they were as significant as normative factors in investment decisions. The heuristic availability of information was found to have no significant effect on experienced REIT fund managers.

Research limitations/implications

The findings were based on four multiple cases and an expert review survey of six frontline fund managers, which form a baseline upon which further research can be conducted to widen the scope of research to cover all REITs in Australasia so that the results can become more robust to benefit the entire market in the region.

Practical implications

As behavioural factors are significant in the decision-making process, REIT fund managers should raise awareness to avoid the significant behavioural factors identified, in particular investor sentiment, which was found to be the most significant one.

Originality/value

This study confirms the relative significance of behavioural factors in property investment decisions within the context of Australasian REITs and alerts fund managers to the ways they should follow to ensure rational investments and market efficiency. It also extends the scale of existing studies to cover not only Australia but also New Zealand for the benefit of the entire Australasian market.

Details

Property Management, vol. 42 no. 1
Type: Research Article
ISSN: 0263-7472

Keywords

Article
Publication date: 30 September 2014

Gai-Ge Wang, Amir Hossein Gandomi, Xin-She Yang and Amir Hossein Alavi

Meta-heuristic algorithms are efficient in achieving the optimal solution for engineering problems. Hybridization of different algorithms may enhance the quality of the solutions…

1011

Abstract

Purpose

Meta-heuristic algorithms are efficient in achieving the optimal solution for engineering problems. Hybridization of different algorithms may enhance the quality of the solutions and improve the efficiency of the algorithms. The purpose of this paper is to propose a novel, robust hybrid meta-heuristic optimization approach by adding differential evolution (DE) mutation operator to the accelerated particle swarm optimization (APSO) algorithm to solve numerical optimization problems.

Design/methodology/approach

The improvement includes the addition of DE mutation operator to the APSO updating equations so as to speed up convergence.

Findings

A new optimization method is proposed by introducing DE-type mutation into APSO, and the hybrid algorithm is called differential evolution accelerated particle swarm optimization (DPSO). The difference between DPSO and APSO is that the mutation operator is employed to fine-tune the newly generated solution for each particle, rather than random walks used in APSO.

Originality/value

A novel hybrid method is proposed and used to optimize 51 functions. It is compared with other methods to show its effectiveness. The effect of the DPSO parameters on convergence and performance is also studied and analyzed by detailed parameter sensitivity studies.

Details

Engineering Computations, vol. 31 no. 7
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 22 March 2021

Jannet C. Bencure, Nitin K. Tripathi, Hiroyuki Miyazaki, Sarawut Ninsawat and Sohee Minsun Kim

The research aims to establish importance scheme of geospatial factors for land valuation activities that may serve as an eye-opener and aid the concerned government agencies in…

Abstract

Purpose

The research aims to establish importance scheme of geospatial factors for land valuation activities that may serve as an eye-opener and aid the concerned government agencies in drafting land valuation policies and guidelines to achieve a sound land governance and administration. It specifically identifies and weighs geospatial valuation factors to establish their importance.

Design/methodology/approach

The research involves discussions and survey questionnaires given to land experts (i.e. appraisers, environmental planners, land economist, geodetic engineers and assessors) who indicated their opinions on influence of geospatial factors on land value. The analytic hierarchy process (AHP) is then used to weigh the factors in terms of its importance.

Findings

The result was then compared with the multiple regression analysis (MRA) taking into consideration the standardized regression coefficient of the 15 factors. The AHP method found out the major road accessibility and slope direction as the most and least influential factors, respectively, while surprisingly MRA found major road accessibility not significant at p < 0.05 level of significance.

Research limitations/implications

The research generally reflects the sub-urban type of study area; hence, inclusion of other road types such as express ways and subways and performing sensitivity analysis of AHP are suggested in future studies.

Practical implications

The findings of the study will provide information of concerned government agencies in improving valuation activities, as well as to update values regularly based on the geospatial factors.

Originality/value

To the best of the authors’ knowledge, this study is the first effort to rank geospatial factors with analytic hierarchy analytic process that further considered both their negative and positive influences on land value. The approach surmounts the flaw and shortcomings of empirical methods of identifying importance of factors.

Details

International Journal of Housing Markets and Analysis, vol. 15 no. 1
Type: Research Article
ISSN: 1753-8270

Keywords

Article
Publication date: 15 June 2012

Christalla Pithara, Michalinos Zembylas and Mamas Theodorou

This paper aims to discuss factors affecting temporary migrants' ability to access and make effective use of public and private healthcare services in the Republic of Cyprus…

Abstract

Purpose

This paper aims to discuss factors affecting temporary migrants' ability to access and make effective use of public and private healthcare services in the Republic of Cyprus (hereafter referred to as Cyprus). These factors are raised in the context of a larger study focusing on the healthcare needs of temporary migrants from non‐EU countries living and working in Cyprus.

Design/methodology/approach

Semi‐structured interviews with 13 domestic workers and 17 students from Sri Lanka, Pakistan, Bangladesh, India and the Philippines explored migrants' experiences with accessing and utilizing healthcare services in Cyprus. The theoretical framework utilized is grounded in the health capability approach which focuses on individuals' confidence and ability to be effective in achieving optimal health.

Findings

The study highlights issues concerning the accessibility and acceptability of healthcare services which emerge as the result of both the organisation and delivery of healthcare services and social, political and economic structures.

Research limitations/implications

The implications of this study are relevant in the current debate taking place at the EU level about the opportunities and challenges of temporary migration. Specifically, it is argued that governments and societies should promote individual freedoms and opportunities that empower people to lead the lives they want to live.

Originality/value

Temporary migrants form a group whose experiences and needs have not been as extensively investigated as those of other migrant groups, particularly in Cyprus. The capability approach allows for assessing both policy and health systems taking into consideration equity and the impact of multi‐sectoral influences on health.

Details

International Journal of Migration, Health and Social Care, vol. 8 no. 2
Type: Research Article
ISSN: 1747-9894

Keywords

Article
Publication date: 30 September 2020

Jagannath Mallick and Atsushi Fukumi

This study aims to explain the role of globalisation on the regional income growth disparities in the states of India and provinces in the People’s Republic of China (PRC).

Abstract

Purpose

This study aims to explain the role of globalisation on the regional income growth disparities in the states of India and provinces in the People’s Republic of China (PRC).

Design/methodology/approach

The authors use two approaches to analyse regional growth disparities: growth accounting and the panel spatial Durbin model.

Findings

The growth accounting shows that contributions of growth of capital intensity (GKI) and total factor productivity growth (TFPG) distinguish the high-income (HI) regions from medium-income (MI) and lower-income (LI) regions in India. In the PRC, the contributions of GKI and TFPG in MI regions are slightly higher than HI regions, but significantly higher than the LI regions. The empirical results find that foreign direct investment (FDI), domestic investment, human capital, and interaction of FDI and human capital explain income growth states/provinces in India and the PRC. A region’s income growth and FDI inflows spread the benefit to neighbourhoods in both countries.

Originality/value

The paper contributes by performing a comparative analysis of Indian states and the PRC’s provinces by capturing the neighbourhood effects of economic growth, FDI, investment and human capital and also the interaction effects of FDI with human capital and domestic investment. A comparison of the decomposition of income growth to the growth of factor inputs and efficiency in Indian states and the PRC’s provinces also adds to the existing literature.

Details

Indian Growth and Development Review, vol. 14 no. 2
Type: Research Article
ISSN: 1753-8254

Keywords

Article
Publication date: 1 March 1985

Mary D. Walters

A study of two approval program dealers was conducted by the Collection Development Department at California State University, Los Angeles. The purpose of the study was to compare…

Abstract

A study of two approval program dealers was conducted by the Collection Development Department at California State University, Los Angeles. The purpose of the study was to compare the length of time it takes for each dealer to supply current American imprints to the library after publication, using a predetermined set of subject guidelines. While the timeliness of the materials supplied was the primary purpose of the study, other factors, such as number of titles supplied under the same set of subject guidelines, discount, charges for postage and handling, etc., were also considered. Based on these findings, a determination was to be made as to which dealer would supply approval program materials to the library in the future.

Details

Collection Building, vol. 7 no. 1
Type: Research Article
ISSN: 0160-4953

Article
Publication date: 1 November 2005

Yi‐Ping Lee and Brian H. Kleiner

Stress is a mentally or emotionally disruptive or upsetting condition occurring in response to adverse external influences and capable of affecting physical and psychological…

5218

Abstract

Stress is a mentally or emotionally disruptive or upsetting condition occurring in response to adverse external influences and capable of affecting physical and psychological health. Stress is intangible. However, it comes with some symptoms such as weight gain or loss, easiness to anger, sleeplessness, frequency headaches, strained relationships, fatigue, and low productivity (Hanes, 2002).

Details

Management Research News, vol. 28 no. 11/12
Type: Research Article
ISSN: 0140-9174

Keywords

Article
Publication date: 30 January 2024

Li Si and Xianrui Liu

This research aims to explore the research data ethics governance framework and collaborative network to optimize research data ethics governance practices, to balance the…

Abstract

Purpose

This research aims to explore the research data ethics governance framework and collaborative network to optimize research data ethics governance practices, to balance the relationship between data development and utilization, open sharing, data security and to reduce the ethical risks that may arise from data sharing and utilization.

Design/methodology/approach

This study explores the framework and collaborative network of research data ethics policies by using the UK as an example. 78 policies from the UK government, university, research institution, funding agency, publisher, database, library and third-party organization are obtained. Adopting grounded theory (GT) and social network analysis (SNA), Nvivo12 is used to analyze these samples and summarize the research data ethics governance framework. Ucinet and Netdraw are used to reveal collaborative networks in policy.

Findings

Results indicate that the framework covers governance context, subject and measure. The content of governance context contains context description and data ethics issues analysis. Governance subject consists of defining subjects and facilitating their collaboration. Governance measure includes governance guidance and ethics governance initiatives in the data lifecycle. The collaborative network indicates that research institution plays a central role in ethics governance. The core of the governance content are ethics governance initiatives, governance guidance and governance context description.

Research limitations/implications

This research provides new insights for policy analysis by combining GT and SNA methods. Research data ethics and its governance are conceptualized to complete data governance and research ethics theory.

Practical implications

A research data ethics governance framework and collaborative network are revealed, and actionable guidance for addressing essential aspects of research data ethics and multiple subjects to confer their functions in collaborative governance is provided.

Originality/value

This study analyzes policy text using qualitative and quantitative methods, ensuring fine-grained content profiling and improving policy research. A typical research data ethics governance framework is revealed. Various stakeholders' roles and priorities in collaborative governance are explored. These contribute to improving governance policies and governance levels in both theory and practice.

Details

Aslib Journal of Information Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2050-3806

Keywords

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