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Article
Publication date: 27 December 2011

Weijian Huang, Pei Niu and Wei Du

Parallel processing technology was applied to accelerate the calculation speed of the water quality forecasting model. The parallel algorithm proposed was based on the…

Abstract

Parallel processing technology was applied to accelerate the calculation speed of the water quality forecasting model. The parallel algorithm proposed was based on the message-passing interface (MPI). It mainly aims at enhancing the computation speed of the water quality forecasting model of Jiaozhou Bay, and decomposes the material transport issue into many sub-duties. The model was run in a MPI message cluster system. The result indicates that, by using this method, the computation efficiency for solving material transportation module is increased by approximately more than 60%.

Details

World Journal of Engineering, vol. 8 no. 4
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 1 March 2013

Hongyu Zhao, Zhelong Wang, Hong Shang, Weijian Hu and Gao Qin

The purpose of this paper is to reduce the calculation burden and speed up the estimation process of Allan variance method while ensuring the exactness of the analysis results.

Abstract

Purpose

The purpose of this paper is to reduce the calculation burden and speed up the estimation process of Allan variance method while ensuring the exactness of the analysis results.

Design/methodology/approach

A series of six‐hour static tests have been implemented at room temperature, and the static measurements have been collected from MEMS IMU. In order to characterize the various types of random noise terms for the IMU, the basic definition and main procedure of the Allan variance method are investigated. Unlike the normal Allan variance method, which has the shortcomings of processing large data sets and requiring long computation time, a modified Allan variance method is proposed based on the features of data distribution in the log‐log plot of the Allan standard deviation versus the averaging time.

Findings

Experiment results demonstrate that the modified Allan variance method can effectively estimate the noise coefficients for MEMS IMU, with controllable computation time and acceptable estimation accuracy.

Originality/value

This paper proposes a time‐controllable Allan variance method which can quickly and accurately identify different noise terms imposed by the stochastic fluctuations.

Details

Industrial Robot: An International Journal, vol. 40 no. 2
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 1 May 2007

Reza Hasmath and Jennifer Hsu

This paper seeks to historically examine social development outcomes in the Tibet Autonomous Region (TAR) in respect to poverty eradication, education and employment, health care…

Abstract

Purpose

This paper seeks to historically examine social development outcomes in the Tibet Autonomous Region (TAR) in respect to poverty eradication, education and employment, health care and social integration. Moreover, it will aims to offer tangible advice for improving future social development work in TAR.

Design/methodology/approach

The main theoretical approach is a literature and policy review of social development in TAR from 1951 to present.

Findings

Seemingly, Tibet's social development strategy has been achieved through a strong top‐down approach. However, the road ahead for TAR once basic needs are satisfactorily met, is a move towards a participatory approach, whereby Tibetans can directly contribute and have a stake in their own futures.

Originality/value

This paper will be of interest to those who want a definitive account of recent historical social development strategies and outcomes in TAR; and subsequently, the future possibilities and challenges for development in the region.

Details

International Journal of Development Issues, vol. 6 no. 2
Type: Research Article
ISSN: 1446-8956

Keywords

Article
Publication date: 13 November 2009

Weijian Mi, Wei Yan, Junliang He and Daofang Chang

The purpose of this paper is to propose a yard allocation model via objective programming. This is initially postulated based on a rolling‐horizon strategy, which aims at…

Abstract

Purpose

The purpose of this paper is to propose a yard allocation model via objective programming. This is initially postulated based on a rolling‐horizon strategy, which aims at allotting outbound containers into yard.

Design/methodology/approach

To resolve the NP‐hard problem regarding the yard allocation model, a hybrid algorithm, which applies heuristic rules and distributed genetic algorithm (DGA), is then employed.

Findings

It could be observed from the case study that this proposed approach is proven effective for resolving the container yard allocation problem. The total loading time onto vessels, the total horizontal transportation distance and the imbalance among blocks are improved.

Research limitations/implications

This paper does not deal with equipment scheduling.

Practical implications

This approach helps to minimize turnaround time; handling cost of vessels; the workloads among blocks are balanced for each vessel; and the total distance of container transportation.

Originality/value

This paper designs a hybrid algorithm, which integrates heuristic rules and DGA. In details, the heuristic rules are developed for generating feasible solutions, while the DGA was applied for optimizing these solutions.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 28 no. 6
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 6 February 2017

Asli Özdemir and Güzin Özdagoglu

Prediction problems raised in uncertain environments require different solution approaches such as grey prediction models, which consider uncertainty in information and also…

Abstract

Purpose

Prediction problems raised in uncertain environments require different solution approaches such as grey prediction models, which consider uncertainty in information and also enable the use of small data sets. The purpose of this paper is to investigate the comparative performances of grey prediction models (GM) and Markov chain integrated grey models in a demand prediction problem.

Design/methodology/approach

The modeling process of grey models is initially described, and then an integrated model called the Grey-Markov model is presented for the convenience of applications. The analyses are conducted on a monthly demand prediction problem to demonstrate the modeling accuracies of the GM (1,1), GM (2,1), GM (1,1)-Markov, and GM (2,1)-Markov models.

Findings

Numerical results reveal that the Grey-Markov model based on GM (2,1) achieves better prediction performance than the other models.

Practical implications

It is thought that the methodology and the findings of the study will be a significant reference for both academics and executives who struggle with similar demand prediction problems in their fields of interest.

Originality/value

The novelty of this study comes from the fact that the GM (2,1)-Markov model has been first used for demand prediction. Furthermore, the GM (2,1)-Markov model represents a relatively new approach, and this is the second paper that addresses the GM (2,1)-Markov model in any area.

Details

Grey Systems: Theory and Application, vol. 7 no. 1
Type: Research Article
ISSN: 2043-9377

Keywords

Article
Publication date: 26 September 2018

Ann Veeck, Hongyan Yu, Hongli Zhang, Hong Zhu and Fang (Grace) Yu

The purpose of this study is to explore the association between eating patterns, social identity and the well-being of adolescents via a mixed methods study of Chinese teenagers…

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Abstract

Purpose

The purpose of this study is to explore the association between eating patterns, social identity and the well-being of adolescents via a mixed methods study of Chinese teenagers. The specific research questions presented in this study are as follows: What is the relationship between social eating and well-being? How is the relationship between social eating and well-being mediated by social identity?

Design/methodology/approach

This study is based on a sequential mixed methods study, including interviews with 16 teenage–parent dyads, and a large-scale survey of over 1,000 teenagers on their eating patterns, conducted with the support of public schools. A model that tests relationships among social eating, social identity and subjective well-being is developed and tested.

Findings

The results show that dining with family members leads to improved subjective well-being for teenagers, through a partial mediator of stronger family identity. However, dining with peers is not found to influence subjective well-being.

Research limitations/implications

The privileged position of family meals demonstrated through this study may be an artifact of the location of this study in one Chinese city. Further research is needed related to the connections among social identity, objective well-being and the social patterns of teenagers’ food consumption behavior.

Practical implications

To improve the subjective well-being of teenagers, families, public policy-makers and food marketers should support food consumption patterns that promote family meals.

Originality/value

While many food-related consumer studies focus on the individual, social and environmental influences of food choices of adolescents, few studies address how eating patterns affect overall well-being. These results reinforce the importance of understanding the effect of the social context of teenagers’ eating patterns on health and well-being.

Details

European Journal of Marketing, vol. 52 no. 12
Type: Research Article
ISSN: 0309-0566

Keywords

Content available
Article
Publication date: 26 October 2020

W.K. Kon, Noorul Shaiful Fitri Abdul Rahman, Rudiah Md Hanafiah and Saharuddin Abdul Hamid

Since the first automated container terminal (ACT) was introduced at Europe Container Terminals Delta Terminal in Port Rotterdam back in the year 1992, a lot of research had been…

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Abstract

Purpose

Since the first automated container terminal (ACT) was introduced at Europe Container Terminals Delta Terminal in Port Rotterdam back in the year 1992, a lot of research had been done to improve the management of ACT. However, up until recently, the number of literature available still appeared scarce. Hence, this paper aims to review the collection of literature about ACT to generate an exhaustive summary to answer the formulated review question in this study.

Design/methodology/approach

Preferred reporting items for systematic reviews and meta-analyses to narrow down the search parameters of literature retrieved so that only relevant articles were only selected. The systematic literature reviews were applied to analyse the content of the articles retrieved to determine its journal ranking, research findings and timeline of publications.

Findings

The adoption of ACT technology by container terminal operators could increase the terminal efficiency in productivity, cost reduction and environmental sustainability. Owing to global environmental awareness, the research trend of container terminal field and container terminal operator in the terminal design is much more environmentally friendly oriented.

Research limitations/implications

The limited numbers of experts in the management of ACT are causing challenges in data collections.

Practical implications

The analysis of the global ACT trend could help academicians and industrial investors to review the revolution timeline of maritime technology in port and shipping that is happening rapidly.

Originality/value

The analysis of timeline and collective literature leads to the propose of the conceptual framework to determine the relationship between increased productivity, cost reduction and environmentally sustainable.

Details

Maritime Business Review, vol. 6 no. 3
Type: Research Article
ISSN: 2397-3757

Keywords

Article
Publication date: 7 April 2022

Chen Wang, Fengqiu Zou, Jeffrey Boon Hui Yap, Lincoln C. Wood, Heng Li and Linghua Ding

The production of sleeve grouting in prefabricated construction is routinely plagued by a variety of factors, and lack of mass data and complex environmental conditions over time…

Abstract

Purpose

The production of sleeve grouting in prefabricated construction is routinely plagued by a variety of factors, and lack of mass data and complex environmental conditions over time make problems inevitable. Thus, a dynamic risk control system is a valuable support for the successful completion of the sleeve grouting process. This study aims to develop an entropy-based sleeve grouting risk dynamic control system.

Design/methodology/approach

First, static risk assessment was conducted through the structured interview survey using the entropy weight method, followed by a dynamic risk control technique, where indicators were simulated through system dynamics containing causal loop diagrams and stock-and-flow diagrams.

Findings

Finally, three types of risk control models, namely, “tortuous type”, “stable type” and “peak loop type”, were developed in the entropy-based sleeve grouting risk dynamic control system and simulated using system dynamics in a real case.

Originality/value

Compared to traditional sleeve grouting risk management, the developed system enabled dynamic control over time.

Details

Engineering, Construction and Architectural Management, vol. 30 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 30 August 2021

Yasamin Abedini

The present study aimed to present a structural model of the relationships between personality traits, metacognitive awareness, creativity and academic achievement in virtual…

Abstract

Purpose

The present study aimed to present a structural model of the relationships between personality traits, metacognitive awareness, creativity and academic achievement in virtual students.

Design/methodology/approach

The statistical population of the study consisted of all students of the electronic Islamic Azad University in Tehran, where 240 of them were selected as sample group by random sampling method. Research instruments included the short form of the Creative Behavior Inventory (Linger), the Metacognitive Awareness Questionnaire (Schraw and Dennison) and NEO Personality Inventory (McCrae and Costa). Data were analyzed using LISERL software and the path analysis method.

Findings

The findings indicated a mediating role of metacognitive awareness and creativity in the relationship between extraversion, openness to experience and conscientiousness personality traits with academic performance. It was also found that metacognitive awareness has a direct, significant positive effect on creativity.

Originality/value

According to the results of the present study, the level of creativity in virtual students can be developed through training and strengthening meta-cognitive skills. The findings also suggest that meta-cognition and creativity are traits that can have intrinsic and personality roots.

Details

Journal of Applied Research in Higher Education, vol. 14 no. 4
Type: Research Article
ISSN: 2050-7003

Keywords

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