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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…

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. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1753-8270

Keywords

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Article
Publication date: 14 February 2019

Lucy Barnard-Brak, David Richman and Zhanxia Yang

Autism spectrum disorder (ASD) is a lifelong disorder that requires intervention and support services for a growing geriatric population. The purpose of this paper is to…

Abstract

Purpose

Autism spectrum disorder (ASD) is a lifelong disorder that requires intervention and support services for a growing geriatric population. The purpose of this paper is to examine the mean age at death of individuals with ASD and subsequent comorbidity with Alzheimer’s disease, and any form of dementia, as a whole and according to sex.

Design/methodology/approach

Data consisted of 1,754 individuals who had an ASD listed as one of the causes of deaths from the National Vital Statistics System with data from 1999 to 2015. In the current study, the authors present contradictory results with a mean age at death for individuals with ASD was 68 years by adjusting for changing prevalence rates.

Findings

Females with ASD had a higher mean age at death than males with ASD; consistent with the trend in the sex differences in the general population. The results of the current study also indicate that individuals with ASD were, in fact, less likely than the general population to have Alzheimer’s disease or a form of dementia. However, males with ASD were significantly more likely to have acquired Alzheimer’s disease or a form of dementia as compared to females with ASD.

Originality/value

Guan and Li (2017) reported a mean age at death of 36 years old for individuals with ASD, which was subsequently reported in the mass media, most notably CNN. The authors contend that this study provides a more accurate estimate mean age at death.

Details

Advances in Autism, vol. 5 no. 4
Type: Research Article
ISSN: 2056-3868

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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…

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

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Article
Publication date: 1 March 1940

H.M.J. Kittelsen

IN order to obtain a clear view of the analysis it is perhaps better first to consider the analogy of a channel section rigidly attached to two cylinders subjected to a…

Abstract

IN order to obtain a clear view of the analysis it is perhaps better first to consider the analogy of a channel section rigidly attached to two cylinders subjected to a shear at their in the plane of the web of the channel (see Fig. 1).

Details

Aircraft Engineering and Aerospace Technology, vol. 12 no. 3
Type: Research Article
ISSN: 0002-2667

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Article
Publication date: 16 April 2018

Ravinder Singh and Kuldeep Singh Nagla

Accurate perception of the environment using range sensors such as laser scanner, SONAR, infrared, vision, etc., for the application, such as path planning, localization…

Abstract

Purpose

Accurate perception of the environment using range sensors such as laser scanner, SONAR, infrared, vision, etc., for the application, such as path planning, localization, autonomous navigation, simultaneously localization and mapping, is a highly challenging area. The reliability of the perception by range sensors relies on the sensor accuracy, precision, sensor model, sensor registration, resolution, etc. Laser scanner is even though accurate and precise but still the efficient and consistent mapping of the environment is yet to be attained because laser scanner gives error as the extrinsic and intrinsic parameters varied which cause specular reflection, refraction, absorption, etc., of the laser beam. The paper aims to discuss this issue.

Design/methodology/approach

This paper presents an error analysis in sensory information of laser scanner due to the effect of varying the scanning angle with respect to the optical axis and surface reflectivity or refractive index of the targets. Uncertainties caused by these parameters are reduced by proposing a new technique, tilt mounting system (TMS) with designed filters of tilting the angular position of a laser scanner with the best possible selection of range and scanning angle for the robust occupancy grid mapping. Various experiments are performed in different indoor environments, and the results are validated after the implementation of the TMS approach with designed filters.

Findings

After the implementation of the proposed TMS approach with filters, the errors in the laser grid map are reduced by 15.6 percent, which results in 62.5 percent reduction in the collision of a mobile robot during autonomous navigation in the laser grid map.

Originality/value

The TMS approach with designed filter reduces the effect of variation in intrinsic and extrinsic parameters to generate efficient laser occupancy grid map to achieve collision-free autonomous navigation.

Details

International Journal of Intelligent Unmanned Systems, vol. 6 no. 2
Type: Research Article
ISSN: 2049-6427

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Article
Publication date: 2 October 2017

Nuno Manuel Veloso Neto, Júlio Fernando Seara Sequeira da Mota Lobão and Elisabete Simões Vieira

This study aims to evaluate the performance of the Portuguese fund managers by examining the selectivity and market timing skills of 51 Portuguese mutual funds from June…

Abstract

Purpose

This study aims to evaluate the performance of the Portuguese fund managers by examining the selectivity and market timing skills of 51 Portuguese mutual funds from June 2002 to March 2012.

Design/methodology/approach

The authors assess empirically the performance of a sample of funds by applying the unconditional and conditional models of Treynor and Mazuy (1966) and Henriksson and Merton (1981).

Findings

The results suggest that, overall, the Portuguese mutual funds do not possess selectivity or timing skills. However, regardless of the model used, the domestic equity funds exhibit a statistically significant market timing ability. Furthermore, the domestic and North American equity funds display positive selectivity during bull markets and timing skills during bear markets. Additionally, there is some evidence that older funds are better stock pickers than younger funds.

Research limitations/implications

To address some of the limitations of this study, the authors suggest for further research correcting the Treynor and Mazuy (1966) model for the convexity cost of replicating Merton’s (1981) option approach. Additionally, for further research, we suggest using a bigger sample, higher frequency data, as such data may lead to higher frequency of timing ability as proposed by Bollen and Busse (2001). To overcome some of the limitations of traditional models, future research may consider using Jiang’s (2003) nonparametric test, as it is not affected by manager’s risk aversion, or Ferson and Khang (2002) conditional performance evaluation using portfolios holdings.

Originality/value

The authors contribute to the current literature by extending the period of study to 10 years in comparison to previous studies; extending the sample of funds to 51; addressing, for the first time in this context, the importance of public information on funds’ performance, through the comparison of unconditional and conditional models of Treynor and Mazuy’s (1966) and Henriksson and Merton’s (1981); and, for the first time in the Portuguese context, analysing the relationship between funds’ size, age and market cycles and selectivity and market timing skills.

Details

Studies in Economics and Finance, vol. 34 no. 4
Type: Research Article
ISSN: 1086-7376

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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…

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

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Book part
Publication date: 29 July 2019

Marina L. Alpidovskaya and Dmitry P. Sokolov

The postindustrial economy did not take the place of previous types of economy. More than that, by definition, it hasn't become “post”-industrial in point of fact…

Abstract

The postindustrial economy did not take the place of previous types of economy. More than that, by definition, it hasn't become “post”-industrial in point of fact: relations with regard to the production of tangible goods define the imperative of industrialism, yet with a modern science and technology stage of development. The present-day production becomes increasingly automated, leading to the absence of demand for psychophysiological properties of man and labor in general. At the same time, highly qualified personnel who are able to control complex information management systems come to the fore. New types of energy and manmade materials appear; socioeconomic human living environment becomes more complicated. These processes are an objective phenomenon. However, the technological revolution is manifested differently in the “central” and “peripheral” countries. In the Russian Federation, formation of the innovational takes place in the conditions of integration of the resource model and opposition of the institutes that fund it. The crisis stimulates the conceptual search and does not deny the scientifically based classics.

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Book part
Publication date: 9 March 2021

Ujjal Protim Dutta, Lipika Kankaria and Partha Pratim Sengupta

The US–China conflicts surrounding the imposition of tariffs have caused a stir in the global markets. Various attempts have been made to understand the rationale and…

Abstract

The US–China conflicts surrounding the imposition of tariffs have caused a stir in the global markets. Various attempts have been made to understand the rationale and causes as well as its impact on the various ­aspects of the international market. There are many unanswered questions pertaining to China’s emergence as a global superpower and the ­possible threats that it poses to the Western dominated market. Based on this background, the chapter is an attempt to investigate the impacts of the Economic Policy Uncertainty (EPU) of the United States and China on three most important global markets, namely, crude oil, credit market, and commodity ­market. To attain the objectives of the chapter, the study has utilized Vector Auto Regressive model and has analyzed the results. The study concludes that China’s EPU has lesser impact on the global market as compared to the US EPU. On the basis of the results obtained, few policy implications have been proposed.

Details

Global Tariff War: Economic, Political and Social Implications
Type: Book
ISBN: 978-1-80071-314-7

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Book part
Publication date: 24 October 2018

A. U. Albekov, T. V. Parkhomenko and A. A. Polubotko

This chapter presents the development prospects of environmentally safe standards in the Russian Federation. It also addresses the imbalance between the natural…

Abstract

This chapter presents the development prospects of environmentally safe standards in the Russian Federation. It also addresses the imbalance between the natural, socio-economic, and scientific substantiation of green economy development.

The main idea of this chapter is based on the necessity of technological modernization, which would facilitate the reduction of environmentally unfriendly production methods, the decrease in natural resources depletion, and the increase in economy competitiveness by reducing the dependence on carbon energy.

The authors substantiate reasons and effective solutions for a green economy aimed at realization, implementation, and successful exploitation of innovation in the alternative energy production space.

Details

Contemporary Issues in Business and Financial Management in Eastern Europe
Type: Book
ISBN: 978-1-78756-449-7

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