Search results

1 – 10 of over 160000
Article
Publication date: 3 June 2024

Jianhua Sun, Suihuai Yu, Jianjie Chu, Wenzhe Cun, Hanyu Wang, Chen Chen, Feilong Li and Yuexin Huang

In situations where the crew is reduced, the optimization of crew task allocation and sequencing (CTAS) can significantly enhance the operational efficiency of the man-machine…

Abstract

Purpose

In situations where the crew is reduced, the optimization of crew task allocation and sequencing (CTAS) can significantly enhance the operational efficiency of the man-machine system by rationally distributing workload and minimizing task completion time. Existing related studies exhibit a limited consideration of workload distribution and involve the violation of precedence constraints in the solution process. This study proposes a CTAS method to address these issues.

Design/methodology/approach

The method defines visual, auditory, cognitive and psychomotor (VACP) load balancing objectives and integrates them with workload balancing and minimum task completion time to ensure equitable workload distribution and task execution efficiency, and then a multi-objective optimization model for CTAS is constructed. Subsequently, it designs a population initialization strategy and a repair mechanism to maintain sequence feasibility, and utilizes them to improve the non-dominated sorting genetic algorithm III (NSGA-III) for solving the CTAS model.

Findings

The CTAS method is validated through a numerical example involving a mission with a specific type of armored vehicle. The results demonstrate that the method achieves equitable workload distribution by integrating VACP load balancing and workload balancing. Moreover, the improved NSGA-III maintains sequence feasibility and thus reduces computation time.

Originality/value

The study can achieve equitable workload distribution and enhance the search efficiency of the optimal CTAS scheme. It provides a novel perspective for task planners in objective determination and solution methodologies for CTAS.

Details

Kybernetes, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 25 April 2024

Minghuan Shou, Furong Jia and Jie Yu

The aging population, a higher proportion of older adults (aged 65+), is considered a global and severe problem, while the information systems (IS) literature on detecting the…

Abstract

Purpose

The aging population, a higher proportion of older adults (aged 65+), is considered a global and severe problem, while the information systems (IS) literature on detecting the relationship between the aging population and the development of electronic commerce (e-commerce) is limited and insufficient. Hence, the main objective of this paper is to examine whether an aging population can moderate the effect of infrastructure constructions on e-commerce sales and whether an aging population can affect e-commerce sales.

Design/methodology/approach

To investigate the relationship between the aging population and e-commerce sales, this study proposes two potential influential mechanisms: moderating the effects of infrastructure development on e-commerce sales and direct influence. Subsequently, a sample of 31 Chinese provinces from 2013 to 2019 is utilized to conduct regression analyses in order to examine these hypotheses.

Findings

The findings suggest that the development of urban transportation infrastructure and network constructions can significantly contribute to the enhancement of e-commerce sales, and the influence cannot be affected by aging population. Furthermore, it is noteworthy that an aging population can have a positive effect on e-commerce sales.

Practical implications

The findings can inform future infrastructure constructions by assessing the potential of infrastructure projects to boost e-commerce sales and examining whether this effect varies in an aging population context.

Originality/value

The findings substantiate the pivotal role of older adults in the e-commerce industry. Moreover, the obtained results establish a positive relationship between an aging population and e-commerce sales, thereby offering diverse perspectives on existing theories.

Details

Industrial Management & Data Systems, vol. 124 no. 5
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 16 May 2024

R.M. Kapila Tharanga Rathnayaka and D.M.K.N. Seneviratna

The global population has been experiencing an unprecedentedly rapid demographic transition as the populations have been growing older in many countries during the current…

Abstract

Purpose

The global population has been experiencing an unprecedentedly rapid demographic transition as the populations have been growing older in many countries during the current decades. The purpose of this study is to introduce a Grey Exponential Smoothing model (GESM)-based mechanism for analyzing population aging.

Design/methodology/approach

To analyze the aging population of Sri Lanka, initially, three major indicators were considered, i.e. total population, aged population and proportion of the aged population to reflect the aging status of a country. Based on the latest development of computational intelligence with Grey techniques, this study aims to develop a new analytical model for the analysis of the challenge of disabled and frail older people in an aging society.

Findings

The results suggested that a well-defined exponential trend has been seen for the population ages 65 and above, a total of a million) during 1960–2022; especially, the aging population ages 65 and above has been rising rapidly since 2008. This will increase to 24.8% in 2040 and represents the third highest percentage of elderly citizens living in an Asian country. By 2041, one in every four Sri Lankans is expected to be elderly.

Originality/value

The study proposed a GESM-based mechanism for analyzing the population aging in Sri Lanka based on the data from 1960 to 2022 and forecast the aging demands in the next five years from 2024 to 2028.

Details

Grey Systems: Theory and Application, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2043-9377

Keywords

Article
Publication date: 4 April 2024

Nicholas Fancher, Bibek Saha, Kurtis Young, Austin Corpuz, Shirley Cheng, Angelique Fontaine, Teresa Schiff-Elfalan and Jill Omori

In the state of Hawaii, it has been shown that certain ethnic minority groups, such as Filipinos and Pacific Islanders, suffer disproportionally high rates of cardiovascular…

Abstract

Purpose

In the state of Hawaii, it has been shown that certain ethnic minority groups, such as Filipinos and Pacific Islanders, suffer disproportionally high rates of cardiovascular disease, evidence that local health-care systems and governing bodies fail to equally extend the human right to health to all. This study aims to examine whether these ethnic health disparities in cardiovascular disease persist even within an already globally disadvantaged group, the houseless population of Hawaii.

Design/methodology/approach

A retrospective chart review of records from Hawaii Houseless Outreach and Medical Education Project clinic sites from 2016 to 2020 was performed to gather patient demographics and reported histories of type II diabetes, obesity, hyperlipidemia, hypertension and other cardiovascular disease diagnoses. Reported disease prevalence rates were compared between larger ethnic categories as well as ethnic subgroups.

Findings

Unexpectedly, the data revealed lower reported prevalence rates of most cardiometabolic diseases among the houseless compared to the general population. However, multiple ethnic health disparities were identified, including higher rates of diabetes and obesity among Native Hawaiians and other Pacific Islanders and higher rates of hypertension among Filipinos and Asians overall. The findings suggest that even within a generally disadvantaged houseless population, disparities in health outcomes persist between ethnic groups and that ethnocultural considerations are just as important in caring for this vulnerable population.

Originality/value

To the best of the authors’ knowledge, this is the first comprehensive study focusing on ethnic health disparities in cardiovascular disease and the structural processes that contribute to them, among a houseless population in the ethnically diverse state of Hawaii.

Details

International Journal of Human Rights in Healthcare, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2056-4902

Keywords

Article
Publication date: 14 September 2012

M. Kabir and M.S. Rahman

Knowledge about current size and structure of a country's population is needed for the formulation and implementation of policies and programs in almost all sectors of public…

Abstract

Purpose

Knowledge about current size and structure of a country's population is needed for the formulation and implementation of policies and programs in almost all sectors of public life. The purpose of this paper is to provide population projection for Oman, using population census and family health survey data.

Design/methodology/approach

Component method is used for projecting future population of Oman. Population Census data of 2003 by sex and by five‐year age groups were used. The base life expectancy of Oman is assumed to be 73 years and the base total fertility considered as 5.1 children per woman.

Findings

Depending upon the achievement of replacement fertility by the year 2025 or 2030 or 2035 the population of Oman in 2050 will vary from 4.5 million to 5.0 million. The different scenarios of population projection indicate that the population of Oman will not be stabilized before 2100.

Research limitations/implications

Population projection depends on assumptions about mortality, fertility, base life expectancy and migration. If these assumptions change then the projections will also change.

Practical implications

Because of high fertility in the past, women in the reproductive ages will increase for up to several decades. Thus, population growth will continue because of momentum effect, even if Oman achieves replacement fertility say in 2030. The age at marriage will increase.

Social implications

The rapid socio‐economic development and increased women empowerment will create a new outlook and ideas about lifestyles, leading to a decline in fertility. The decline in fertility is strongly related to social, health, education, employment opportunities of women and economic development, which through a variety of mechanisms, reduces the fertility desired and increases the fertility regulation through contraception, birth spacing and increased age at marriage of females. Because of increase in life expectancy and falling birth rate, the absolute number of the elderly population will have enormous impact on health care needs and hospitalization.

Originality/value

This paper deals with the population projection of Oman. Timely and accurate information about population trends is crucial for the socio‐economic development of a country. Knowledge about current size and structure of a country's population is needed for the formulation and implementation of policies and programs in almost all sectors of public life such as health, education and employment.

Details

Education, Business and Society: Contemporary Middle Eastern Issues, vol. 5 no. 3
Type: Research Article
ISSN: 1753-7983

Keywords

Article
Publication date: 1 January 1989

Jiang Xiaorong and Zhang Wenxian

The economic law of population distribution and migration has beenstudied chiefly based on the Chinese situation. The distribution anddevelopment of productive forces decide the…

Abstract

The economic law of population distribution and migration has been studied chiefly based on the Chinese situation. The distribution and development of productive forces decide the distribution and migration of population, and in turn, the latter influences the former. The population distributions in three different stages of social development, namely agricultural, industrial and information society, are described. A new concept in population economics is introduced, i.e. population economic density, which is different from the concept of population density. The formula of population economic density is P(population)/R(resources). Many kinds of migration are analysed, and it is believed that the main efficient cause of migration is economy.

Details

International Journal of Social Economics, vol. 16 no. 1
Type: Research Article
ISSN: 0306-8293

Keywords

Article
Publication date: 1 October 2018

Meghan Hufstader Gabriel, Danielle Atkins, Xinliang Liu and Rebecca Tregerman

The purpose of this paper is to investigate the relationship between ownership type and population health initiatives adopted by hospitals using the 2015 American Hospital…

Abstract

Purpose

The purpose of this paper is to investigate the relationship between ownership type and population health initiatives adopted by hospitals using the 2015 American Hospital Association data.

Design/methodology/approach

Hospitals of various sizes, ownership structures and geographic locations are represented in the survey. The outcome variables of interest include measures of hospital population health activities.

Findings

Findings indicate that nonprofit hospitals are most likely to express commitment to population health and participate in population health activities, with for-profit hospitals being least likely. Implications for policy and practice are discussed.

Research limitations/implications

This study demonstrates that discrepancies in population health approaches exist across ownership status – particularly, nonprofit hospitals appear to be the most likely to be involved in population health efforts.

Practical implications

As we continue to push for population health management in the hospital setting, grappling with the definition and purpose of population health management will be essential.

Social implications

Overall, these results suggest that nonprofit hospitals are more likely to be implementing population health efforts than for-profit or government-owned hospitals.

Originality/value

Although there are several studies on population health in hospitals, this study is the first to investigate the relationship between ownership type and population health initiatives adopted by hospitals.

Details

Journal of Health Organization and Management, vol. 32 no. 8
Type: Research Article
ISSN: 1477-7266

Keywords

Article
Publication date: 24 May 2011

Wolfgang Lutz

The paper seeks to provide a comprehensive review of the most important current and future demographic trends around the world and to discuss their implications for business…

1150

Abstract

Purpose

The paper seeks to provide a comprehensive review of the most important current and future demographic trends around the world and to discuss their implications for business schools. It aims to do so by going beyond the usual consideration of population size and also by focusing on the changing composition by age, sex and highest educational attainment.

Design/methodology/approach

Standard cohort‐component population projections are complemented with methods of multi‐state projections and probabilistic population projections.

Findings

The paper shows the likely end of world population growth together with massive anticipated population ageing in low fertility countries and continuing very high population growth in Sub‐Saharan Africa and parts of Western Asia. Because of past investments in education younger cohorts tend to be better educated. For business schools this presents challenges in terms of the composition of the student body and faculty as well as the content of teaching.

Originality/value

This is the first time that such multi‐state projections of population and human capital around the world are discussed in the context of challenges arising for higher education.

Details

Journal of Management Development, vol. 30 no. 5
Type: Research Article
ISSN: 0262-1711

Keywords

Article
Publication date: 10 April 2009

Lu Caimei, Hao Yonghong and Wang Xuemeng

The purpose of this paper is to apply grey system theory to population system and project China's population.

693

Abstract

Purpose

The purpose of this paper is to apply grey system theory to population system and project China's population.

Design/methodology/approach

The paper applies the GM(1,1) model to China's population projections. Two key aspects of the method are crucial for obtaining best accuracy of prediction. They are the choice of the length for the original data to be used in the model and the adoption of the GM(1,1) metabolic model in prediction. The former determines what initial data to be used while the latter describes an iteration process on how to proceed to predict.

Findings

The results show that in 2015 China's population will reach 1.37 billion and in 2050 it will be between 1.42 and 1.48 billion, which is in accordance with the latest projections from the UN. The findings show the GM(1,1) metabolic model is an effective mathematical means in population projections.

Research limitations/implications

The paper suggests that GM(1,1) metabolic model can provide an effective simulation model for complicated systems with uncertainty and can be used in many fields.

Practical implications

The paper provides useful advice for the department of population.

Originality/value

Most population projections have been based on assumptions about fertility, mortality, and migration. The paper considers the population system as a grey system and introduces the GM(1,1) metabolic model to population projections.

Details

Kybernetes, vol. 38 no. 3/4
Type: Research Article
ISSN: 0368-492X

Keywords

Book part
Publication date: 29 November 2019

Magnus Andersson, Peter G. Håkansson and Inge Thorsen

This chapter examines observed regional inequalities and centralization tendencies in Norway. Small, rural, municipalities experienced a favourable population development from…

Abstract

This chapter examines observed regional inequalities and centralization tendencies in Norway. Small, rural, municipalities experienced a favourable population development from 1970 to the mid-1980s. After this, the percentage population growth has been strongest in the largest municipalities/cities, and this tendency has accelerated during the last 10–15 years. Data post-1970 strongly support the reasonable hypothesis that population growth is positively related to centrality. The major source of changes lies within the labour market regions, whereas the changes between the regions are modest. Jobs have not become more centralized than households over the period.

A conceptual model is developed, offering a useful taxonomy of municipalities in three dimensions: the unemployment rate, the employment growth, and housing prices. This provides a classification that contributes to clarify the changes in the urban-rural divide. The discussion demonstrates that distinguishing between different categories is important, since different explanations of centralization and regional disparities call for different menus of policy instruments.

We study the relationship between population growth, unemployment rates, and employment growth in Norwegian municipalities, to distinguish between disequilibrium and equilibrium explanations of the situation in regional labour markets. At a national level our results indicate that neoclassical adjustments dominate weakly over amenity-based mechanisms. However, results from many regions support the hypothesis that amenity-based adjustments are dominant for municipalities within a labour market region. One possible explanation is that the diversity in job opportunities is considered as an amenity. A thicker labour market is better fit to meet the demand of workers with specific qualifications.

1 – 10 of over 160000