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Open Access
Article
Publication date: 5 October 2018

Liwei Xu, Guodong Yin, Guangmin Li, Athar Hanif and Chentong Bian

The purpose of this paper is to investigate problems in performing stable lane changes and to find a solution to reduce energy consumption of autonomous electric vehicles.

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Abstract

Purpose

The purpose of this paper is to investigate problems in performing stable lane changes and to find a solution to reduce energy consumption of autonomous electric vehicles.

Design/methodology/approach

An optimization algorithm, model predictive control (MPC) and Karush–Kuhn–Tucker (KKT) conditions are adopted to resolve the problems of obtaining optimal lane time, tracking dynamic reference and energy-efficient allocation. In this paper, the dynamic constraints of vehicles during lane change are first established based on the longitudinal and lateral force coupling characteristics and the nominal reference trajectory. Then, by optimizing the lane change time, the yaw rate and lateral acceleration that connect with the lane change time are limed. Furthermore, to assure the dynamic properties of autonomous vehicles, the real system inputs under the restraints are obtained by using the MPC method. Based on the gained inputs and the efficient map of brushless direct-current in-wheel motors (BLDC IWMs), the nonlinear cost function which combines vehicle dynamic and energy consumption is given and the KKT-based method is adopted.

Findings

The effectiveness of the proposed control system is verified by numerical simulations. Consequently, the proposed control system can successfully achieve stable trajectory planning, which means that the yaw rate and longitudinal and lateral acceleration of vehicle are within stability boundaries, which accomplishes accurate tracking control and decreases obvious energy consumption.

Originality/value

This paper proposes a solution to simultaneously satisfy stable lane change maneuvering and reduction of energy consumption for autonomous electric vehicles. Different from previous path planning researches in which only the geometric constraints are involved, this paper considers vehicle dynamics, and stability boundaries are established in path planning to ensure the feasibility of the generated reference path.

Details

Journal of Intelligent and Connected Vehicles, vol. 1 no. 2
Type: Research Article
ISSN: 2399-9802

Keywords

Open Access
Article
Publication date: 7 December 2023

Zhen Qiao

This paper aims to determine the status of the socialist market economy through a logical analysis of the evolution of economic systems in human society.

Abstract

Purpose

This paper aims to determine the status of the socialist market economy through a logical analysis of the evolution of economic systems in human society.

Design/methodology/approach

This paper presents an analysis of uncertainty and the functions performed by different economic systems in managing and resolving it, thereby explaining the evolutionary rationale behind economic system evolution.

Findings

Firstly, the socialist market economy empowers the market to play a decisive role in resource allocation, which serves as the foundation for activating individuals' motivation to engage in economic activities. Secondly, the socialist market economy adheres to the basic socialist economic system, which is the basis for the socialist market economy to stabilize the economy and society or to address the risk of economic uncertainty that may trigger macro-level inconsistencies in economic operations. Thirdly, the advantages of a socialist market economy in adapting to economic uncertainties do not arise spontaneously and must be exerted through continuous improvement of the socialist market economy.

Originality/value

The innovation of this paper lies in introducing uncertainty to clarify the logic behind the evolution of economic systems in human society and explaining the typical significance of the socialist market economy and its advantages in accommodating and resolving uncertainty.

Details

China Political Economy, vol. 6 no. 2
Type: Research Article
ISSN: 2516-1652

Keywords

Open Access
Book part
Publication date: 9 May 2023

Volker Stocker, William Lehr and Georgios Smaragdakis

The COVID-19 pandemic has disrupted the ‘real’ world and substantially impacted the virtual world and thus the Internet ecosystem. It has caused a significant exogenous shock that…

Abstract

The COVID-19 pandemic has disrupted the ‘real’ world and substantially impacted the virtual world and thus the Internet ecosystem. It has caused a significant exogenous shock that offers a wealth of natural experiments and produced new data about broadband, clouds, and the Internet in times of crisis. In this chapter, we characterise and evaluate the evolving impact of the global COVID-19 crisis on traffic patterns and loads and the impact of those on Internet performance from multiple perspectives. While we place a particular focus on deriving insights into how we can better respond to crises and better plan for the post-COVID-19 ‘new normal’, we analyse the impact on and the responses by different actors of the Internet ecosystem across different jurisdictions. With a focus on the USA and Europe, we examine the responses of both public and private actors, with the latter including content and cloud providers, content delivery networks, and Internet service providers (ISPs). This chapter makes two contributions: first, we derive lessons learned for a future post-COVID-19 world to inform non-networking spheres and policy-making; second, the insights gained assist the networking community in better planning for the future.

Details

Beyond the Pandemic? Exploring the Impact of COVID-19 on Telecommunications and the Internet
Type: Book
ISBN: 978-1-80262-050-4

Keywords

Open Access
Article
Publication date: 29 June 2021

Gemma Ubasart-González and Analía Mara Minteguiaga

The purpose of this paper is to examine the relation between estate transformations produced during the governments of the Citizen Revolution (CR) in Ecuador (2007-2017) and…

1209

Abstract

Purpose

The purpose of this paper is to examine the relation between estate transformations produced during the governments of the Citizen Revolution (CR) in Ecuador (2007-2017) and welfare regime transformations.

Design/methodology/approach

The CR’s project registers an array of specificities that make it a relevant case study to understand it. Among them, it articulated the transformation of the development model with a comprehensive state reform: emphasized both the modernization of the state and the productive structure, and the creation of the basic pillars of a welfare state. The ambitious project materialized in an ambivalent manner, revealing accomplishments and limitations.

Findings

The recovery of resources for the state, the efficient organization of resources, decentralization and deconcentration processes, public administration transformations and policy de-corporatization processes accompanied and even propelled important achievements in the social sphere in terms of decommodification, stratification, commodification and defamiliarization. Ecuador’s starting point, as a small and impoverished country with pubic and communal goods and services dismantled through neoliberal reforms, was quite precarious. But, progress was made. Beyond the identified limitations, its accomplishments must be highlighted because they are novel in comparison to other progressive government experiences, especially in the context of Central Andean countries.

Originality/value

This article vindicates the need to link state transformation processes to welfare regime transformations, as well as the academic literature that informs both fields. The description of what took place in Ecuador in the field of social welfare during the ten years of the CR continues to confirm the theoretical potential of the concept of welfare regime with the necessary translations and appropriations that allow for the analysis of countries in the region. It enables an approach to a more theoretically and methodologically elusive object that is at the same time tremendously potent in analytical terms and in its contributions to social transformations. An object that alludes to areas gravely affected during neoliberal hegemony, linked to public institutionality, state capacity and state autonomy. This is why everything that affects the state and the management of public goods and services must be incorporated into the analysis.

Details

International Journal of Sociology and Social Policy, vol. 42 no. 1/2
Type: Research Article
ISSN: 0144-333X

Keywords

Open Access
Article
Publication date: 15 December 2022

Muhammad Yazrin Yasin, Muhammad Azmi Bin Mohd Zain and Muhammad Haniff Bin Hassan

This paper discusses the urban management challenges in the Greater Kuala Lumpur area. Before examining Greater Kuala Lumpur's economic and social environment, we will look at the…

Abstract

This paper discusses the urban management challenges in the Greater Kuala Lumpur area. Before examining Greater Kuala Lumpur's economic and social environment, we will look at the factors that make it a competitive and fiscally sound entity. When considering urban development and redevelopment, we consider how proposed and ongoing projects, as well as plans, hierarchical links, and road networks, contributed to the increase. Because there is no urban growth boundary, land use change and rural encroachment, as well as environmental degradation and the impact of national economic projects on urban expansion, are both rapid and linear in the analysis. This paper also considers how to manage linear development that results in the creation of new suburbs. Finally, we propose strategies for achieving sustainable urban expansion and management by balancing the financial and governance capacities of Greater Kuala Lumpur local governments.

Details

Southeast Asia: A Multidisciplinary Journal, vol. 22 no. 2
Type: Research Article
ISSN: 1819-5091

Keywords

Open Access
Article
Publication date: 2 March 2023

Andrew Ebekozien, Clinton Ohis Aigbavboa, Mohamad Shaharudin Samsurijan, Radin Badarudin Radin Firdaus and Mohd Isa Rohayati

Public higher education institutions (HEIs) infrastructure funding is challenging in many developing countries. Encouraging private investment in HEIs infrastructure via a…

1569

Abstract

Purpose

Public higher education institutions (HEIs) infrastructure funding is challenging in many developing countries. Encouraging private investment in HEIs infrastructure via a developed expanded corporate social responsibility (ECSR) may improve physical facilities. ECSR is a form of infrastructure tax relief providing physical facilities for HEIs. Academic literature is scarce concerning how ECSR can improve Nigeria’s public HEIs infrastructure and achieve education infrastructure related to Sustainable Development Goal 4 (SDG 4). Therefore, this study aims to proffer measures to improve public HEIs infrastructure and achieve sustainable development connected to Goal 4 focussing on infrastructure via a developed framework.

Design/methodology/approach

This is an expansion of an ongoing study, and data were collated via virtual interviews across the six geo-political zones in Nigeria. The analysed data were presented in a thematic pattern.

Findings

A total of 18 measures (sub-variables) emerged and were re-grouped into six variables. This includes institutionalising ECSR, HEIs infrastructure via ECSR awareness, HEIs infrastructure incentives, national and state action plans on HEIs infrastructure, a legal framework for HEIs infrastructure and key stakeholders’ participation. Also, the study used the generated six main variables to develop the improved public HEIs infrastructure via ECSR in developing countries, using Nigeria as a case study. This can enhance achieving infrastructure associated with SDG 4 (quality education) and targets.

Originality/value

This study intends to develop the philosophy (ECSR) with an implementable framework to encourage the private sector further to expand their CSR in the infrastructure development to the educational sector, especially in developing countries higher institutions, using Nigeria as a case study.

Details

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

Keywords

Open Access
Article
Publication date: 15 August 2022

Andrew Ebekozien, Mohamad Shaharudin Samsurijan, Clinton Aigbavboa, Radin Badarudin Radin Firdaus, Noor Alyani Nor Azazi and Godpower C. Amadi

Funding infrastructural facilities of higher institutions, especially in some developing nations such as Nigeria, that is under-funded, is a challenge in the current era. Private…

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Abstract

Purpose

Funding infrastructural facilities of higher institutions, especially in some developing nations such as Nigeria, that is under-funded, is a challenge in the current era. Private organisations participation in infrastructure development via a proposed expanded corporate social responsibility (ECSR) may enhance infrastructural facilities provision. There is a paucity of literature regarding ECSR, a form of infrastructure tax relief providing infrastructural facilities for higher institutions. Therefore, the study investigated the role of private organisations via a proposed ECSR in the provision of infrastructure and proffer ways to enhance higher institutions' infrastructure development delivery in Nigeria.

Design/methodology/approach

The study data were collated via face-to-face interviews and observation of existing buildings. From the six geo-political zones, two higher institutions each were selected for a good representation across Nigeria. Saturation was achieved with 26 participants interviewed. The emerged three main themes were analysed via thematic analysis.

Findings

Findings show inadequate infrastructure development in Nigerian higher institutions. Lack of policy and institutional framework, lax governance, level of transparency, and corruption, emerged as the key issues that may hinder private organisations from participating in public higher institutions infrastructure development delivery in Nigeria via ECSR. Others are lack of autonomy, inadequate planning, high level of impunity, political affiliation, poor management, and access to funding. The study proffers some recommendations based on these findings.

Research limitations/implications

This research is restricted to the role of private organisations via ECSR in infrastructure development (buildings) in Nigeria's public higher institutions. Future study is needed to validate the proposed ECSR framework in developing countries for the provision of buildings for higher institutions in their host communities.

Practical implications

The paper will advance the philosophy of corporate social responsibility to the provision of building facilities in host communities' higher institutions by private companies through tax relief and supported by a proposed Presidential Executive Order.

Originality/value

The proposed ECSR framework can be used to improve building facilities in Nigeria's higher institutions. This may assist and stir up policymakers to explore the proposed model and back up with an established policy such as infrastructure tax relief (ITR) for implementation.

Details

Property Management, vol. 41 no. 1
Type: Research Article
ISSN: 0263-7472

Keywords

Open Access
Article
Publication date: 16 August 2019

Zheng Zhao and Yali Wen

The purpose of this paper is to measure the influence factors of their preferences for urban forest, marginal values of various properties and relative values of different scheme…

Abstract

Purpose

The purpose of this paper is to measure the influence factors of their preferences for urban forest, marginal values of various properties and relative values of different scheme portfolios, thus arriving indirectly at the city residents’ demand for urban forest improvement.

Design/methodology/approach

This paper, based on the data from the 2015–2017 field survey questionnaire of city residents over the radius of Beijing’s 5th Ring Road, uses the choice experiment method (CEM) to conduct a study of its residents’ demand for urban forest.

Findings

Beijing’s city residents are generally inclined to accept a relatively low payment of urban forest while hoping to access a relatively high urban afforestation coverage with the construction of relatively many city parks, especially focusing on the specialized park management; the marginal values of biodiversity and greenery coverage are far higher than those of greenbelts in quantity and the maximum marginal value of biodiversity remains as high as RMB29.42, indicating that the city residents do not favor much the number of greenbelts over other aspects but they generally hope to achieve a higher greenery coverage and a richer biodiversity.

Research limitations/implications

Generally speaking, what Beijing City needs most is not continuing the increase in the number of greenbelts, but engaging in the rational retrofit of its existing greenbelts and optimizing its urban forest structure.

Originality/value

This paper may provide reference for determining the city residents’ payment criteria for urban forest and will be of equally great significance to developing cities and their urban forest.

Details

Forestry Economics Review, vol. 1 no. 1
Type: Research Article
ISSN: 2631-3030

Keywords

Open Access
Article
Publication date: 16 March 2015

Jim Dator and Ian Yeoman

Futurist Jim Dator provides a personal insight of how he “sees” the past, present, and futures of Hawaiian tourism. The paper aims to discuss this issue.

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Abstract

Purpose

Futurist Jim Dator provides a personal insight of how he “sees” the past, present, and futures of Hawaiian tourism. The paper aims to discuss this issue.

Design/methodology/approach

Ian Yeoman interviews one of the world's most prominent and respected futurists, Professor Jim Dator, from the Futures Research Center of the University of Hawaii at Manoa's Political Science Department.

Findings

Like a climatologist, futurists discuss long‐term futures which are very uncertain, controversial, and often frightening stories. The past tells how the present occurred. Understanding that story is essential before considering the future. The growth of tourism is a fabulous story dependent on many developments whose future is uncertain. The tourism industry may want a “more of the same” trajectory of continued economic growth but a number changes are on the horizon which Dator calls “The Unholy Trinity,” namely the end of cheap and abundant energy; a profoundly unstable environment and a dysfunctional global economic system. Dator concludes that no government now governs satisfactorily, and so the future of tourism is extremely precarious and uncertain.

Originality/value

The interview provides both insight into how tourism has evolved and foresight of what could occur in the futures. Central to the interview is Dator's identification of the Unholy Trinity, Plus One, that suggests that the future will not neither be like the present nor like the future the tourism industry has hoped for in terms of continued economic growth. The originality and value of Dator's frank views are thought provoking, going beyond present wisdom and comfort.

Details

Journal of Tourism Futures, vol. 1 no. 1
Type: Research Article
ISSN: 2055-5911

Keywords

Open Access
Article
Publication date: 20 April 2022

Honghao Tang, Mingyue Lin, Jing Yu and Qi Yue

The focus of this paper is to further improve the implementation safeguard measures of the National Plan for Main Functional Zones of Ocean (NPMFZO) based on the implementation…

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Abstract

Purpose

The focus of this paper is to further improve the implementation safeguard measures of the National Plan for Main Functional Zones of Ocean (NPMFZO) based on the implementation status of the national marine main functional area plan after the promulgation of the existing marine planning implementation safeguard measures, aiming at the problems existing in the implementation of the plan, to help the implementation of the plan more effective.

Design/methodology/approach

This paper reviews the historical process of the preparation and implementation of NPMFZO, analyzes the problems existing in the implementation of this plan, and puts forward some measures and suggestions under the background of the new national territory planning system.

Findings

In the new period, the authors should focus on building the evaluation system of planning implementation, strengthening the coordination with other plans, improving the supporting policies of planning and ensuring the effective implementation of the main functional zoning of oceans under the territorial spatial planning system.

Originality/value

This paper reviews some problems existing in the implementation of the NPMFZO and puts forward policy suggestions to ensure the implementation of the plan in the new period.

Details

Marine Economics and Management, vol. 5 no. 1
Type: Research Article
ISSN: 2516-158X

Keywords

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