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Article

Saeed Moradi, Farnad Nasirzadeh and Farzaneh Golkhoo

The purpose of this research is to propose a hybrid simulation framework which can take into account both the continuous and operational variables affecting the…

Abstract

Purpose

The purpose of this research is to propose a hybrid simulation framework which can take into account both the continuous and operational variables affecting the performance of construction projects.

Design/methodology/approach

System dynamics (SD) simulation paradigm is implemented for the modelling of the complex inter-related structure of continuous variables and discrete event simulation (DES) is implemented for the modelling of operational influencing factors. A hybrid modelling framework is then proposed through combination of SD and DES to simulate the construction projects.

Findings

This paper discusses the deficiencies of two traditional simulation methods – SD and DES – for simulation of construction projects which can be compensated by implementing hybrid SD–DES model. Different types of basic hybrid structures and synchronisation methods of SD and DES models are introduced.

Practical implications

The proposed hybrid framework discussed in this research will be beneficial to modellers to simulate construction projects.

Originality/value

The paper introduces a theoretical framework for a hybrid continuous- discrete simulation approach which can take into account the dynamics of project environment arising from the complex inter-related structure of various continuous influencing factors as well as the construction operations. Different steps required to develop the hybrid SD–DES model and synchronisation of SD and DES simulation methods are illustrated.

Details

Construction Innovation, vol. 15 no. 1
Type: Research Article
ISSN: 1471-4175

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Article

Iman Hesam Arefi, Mehri Saffari and Rooholla Moradi

The purpose of this study is to simulate the climate change impacts on winter wheat production and evaluate the possibilities of using various varieties and shifting…

Abstract

Purpose

The purpose of this study is to simulate the climate change impacts on winter wheat production and evaluate the possibilities of using various varieties and shifting planting date as two climate change adaptation strategies in Kerman Province, Iran.

Design/methodology/approach

Two types of global circulation model and three scenarios for three periods were used. Daily climatic parameters were generated by LARS-WG (Long Ashton Research Station-Weather Generator). The CERES-wheat model was used to simulate future winter wheat growth, development and production.

Findings

The results showed that CO2 had no effect on the phenology of winter wheat, and the negative impact of temperature on the grain yield was higher than the positive effect of CO2 enrichment. The length of the reproductive growth period of the winter wheat was significantly shortened as affected by the negative impacts of rise in temperature. The simulated results indicated that the grain yield of common (medium maturing) variety of winter wheat will decline, ranging from −0.27 to −18.71 per cent according to future climate changes. Adaptation strategies showed that the early maturing variety had a higher and more stable grain yield under climate change conditions than medium and delayed maturing varieties. Earlier planting date (20 October) increased wheat grain yield under future climatic conditions than common (November 5) planting date. In reverse, later planting (November 20) would accelerate harmful effects of climate change on wheat grain yield.

Originality/value

The results highlighted the potential of early maturing variety and early planting date as the appropriate agronomical approaches for mitigating harmful impacts of climate change on winter wheat production in arid regions.

Details

International Journal of Climate Change Strategies and Management, vol. 9 no. 6
Type: Research Article
ISSN: 1756-8692

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Article

Nurul Hazwani Abdul Latif, Muhammad Taher, Juliana Md Jaffri, Mohamad Shahreen Amri, Muhammad Badri Abdul Kudos, Wan Mohd Azizi Wan Sulaiman and Deny Susanti

Various studies suggest that some of natural agents create a specific action of hypocholesterolemic effect. Considering this fact, the aim of this paper is to work on…

Abstract

Purpose

Various studies suggest that some of natural agents create a specific action of hypocholesterolemic effect. Considering this fact, the aim of this paper is to work on describing selected natural agents that may reduce cholesterol concentrations by different mechanism of actions.

Design/methodology/approach

The advantages, phytochemical components and the mechanisms of the agents were reviewed and supported from the findings of the in vitro, double-blind and clinical studies from published journals, books and articles. The journals used in this review were published between 1987 and 2016, and are available from PubMed, ScienceDirect and Google Scholar.

Findings

Plant stanols and sterols, turmeric, fenugreek, avocado, tomato, artichoke, red yeast rice and garlic showed a positive effect in maintaining cholesterol levels by specific mechanisms or actions. These agents each had a specific action in creating a hypocholesterolemic effect either by inhibition of the enzyme significant to the synthesis process, disturbing the absorption of cholesterol, conversion of cholesterol to other related forms and through the reduction of the oxidative stress.

Research limitations/implications

However, this field still needs more studies as, currently, there is not any detailed information regarding the main active ingredients responsible for the mechanism to reduce cholesterol levels in humans.

Originality/value

This paper enlightens the authors’ understanding of some natural agents that have the potential to be used in controlling cholesterol.

Details

Nutrition & Food Science, vol. 48 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

Abstract

Details

International Perspectives on Gender and Higher Education
Type: Book
ISBN: 978-1-83909-886-4

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Article

Saeed Pahlevan Sharif, Navaz Naghavi, Hamid Sharif Nia and Hassam Waheed

The purpose of this paper is to investigate whether financial distress explains the relationship between financial literacy and quality of life (QoL) among consumers who…

Abstract

Purpose

The purpose of this paper is to investigate whether financial distress explains the relationship between financial literacy and quality of life (QoL) among consumers who have faced life-threatening cancer. To extend this line of research, the moderating role of social supports in the relationship between financial distress and QoL is examined.

Design/methodology/approach

A cross-sectional survey was utilized to collect quantitative data through a self-administered questionnaire. A total of 223 consumers diagnosed with cancer in Iran participated in the study by means of a convenience sampling technique. Using a forward–backward method the questionnaire was translated from English into Persian.

Findings

The findings highlight the importance of financial literacy in managing direct and indirect costs of chronic diseases that in turn can improve consumers' QoL. Moreover, while perceived social support improves QoL of consumers diagnosed with cancer, it strengthens the negative association between financial distress and QoL. Consequently, solely receiving of emotional support from acquaintances with no financial support might be bothersome.

Practical implications

The findings highlight the need for interventions that target financial literacy and perceived financial distress for consumers with chronic diseases. These consumers can benefit from interventions that offer support based on accurate assessments of their needs and priorities.

Originality/value

The present study is the first of its kind to highlight the importance of financial literacy in improving the QoL of consumers with chronic diseases.

Details

International Journal of Bank Marketing, vol. 38 no. 5
Type: Research Article
ISSN: 0265-2323

Keywords

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Article

Mahdi Salehi, Nadia Mahdavi, Saeed Zarif Agahi Dari and Hossein Tarighi

The purpose of this paper is to investigate the relationship between access to financial resources, working capital with surplus stock returns and value of the company in Iran.

Abstract

Purpose

The purpose of this paper is to investigate the relationship between access to financial resources, working capital with surplus stock returns and value of the company in Iran.

Design/methodology/approach

The study population consists of 728 observations and 91 firms listed on the Tehran stock exchange during an eight-year period between 2009 and 2016. The statistical model used in this study is a multivariate regression model; further, the statistical technique used to test the hypotheses is panel data.

Findings

The results saw a negative and significant linkage between changes in cash and stock’ excess returns, whereas no meaningful association between changes in working capital and stock surplus returns was seen. In other words, an Iranian rial (Iran’s currency) invested in working capital worth less on average than a rial held in cash. Furthermore, the authors realized that in an inflationary economy, firms mainly pay more dividends so as to illustrate better their financial position and also to attract more investors’ trust. The results also indicated that the final value of working capital in the companies that are faced with financial constraints is more than companies that are not faced with financial constraints. Subsequently, after the elimination of the effects of inflation on stock returns, it was found there is not any significant association between the stock’s real return and firm value.

Practical implications

This is one of the most comprehensive research works in Iran that simultaneously surveys the impacts of access to finance and working capital on firm value. This research warns corporate managers to pay more attention to the importance of keeping cash to finance and manage working capital for profitability and sustainability of their company’s operations. Surely, by understanding the relationship between cash holdings, working capital management and stock surplus return, investors will be able to make appropriate decisions about the optimal choice of funds.

Originality/value

What really will fascinate other scholars about this paper is the time period of the study because there were unprecedented sanctions against Iran market and many manufacturing industries were in financial strain. Without hesitation, the paper will make aware investors and stakeholders of this fact that cash holdings will be a good way in reducing the corporate financial problems in emerging markets, particularly those markets face financial sanctions like Iran.

Details

International Journal of Emerging Markets, vol. 14 no. 2
Type: Research Article
ISSN: 1746-8809

Keywords

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Abstract

Details

Application of Big Data and Business Analytics
Type: Book
ISBN: 978-1-80043-884-2

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Article

Shanabhoga M.B., Krishnamurthy Bommaiah, Suresha S.V. and Shivani Dechamma

The purpose of this paper is to consider the climatic variables and evaluate the role of non-climatic factors that delicately influence agriculture. This study has come…

Abstract

Purpose

The purpose of this paper is to consider the climatic variables and evaluate the role of non-climatic factors that delicately influence agriculture. This study has come across various adaptation strategies such as modification in cultivation practices such as shifting planting dates, water-saving techniques and strategic nutrient management. Meanwhile, we are trying to forget the ground reality that a majority of the farmers are not aware of climate-resilient production technologies. However, farmers modify themselves in this climate change scenario for sustainable production. The practise of these adaptation strategies helps to reduce vulnerability to improve their “socio-economic status” and the “quality of life”.

Design/methodology/approach

The present study was attempted to document all the indigenous practices, which are practised by paddy-growers over time for confronting the climate crisis in the Hyderabad-Karnataka region of Karnataka state, India. A cross-sectional and questionnaire-based survey was conducted to collect primary data. The pre-tested interviewing questionnaire consisted of 7 sections with 51 questions. A total of 90 paddy-growing farmers of the region was selected as respondents for the survey. The descriptive statistics was used to analyse the collected data.

Findings

In respect of adopted strategies, the vast majority (96.67%) of the farmers had used crops as livestock fodder as they fall back in case of failure, followed by the majority (72.22%) of the selected appropriate varieties. Cent per cent of the farmers adopted the construction of waterways along the slope for safe disposal of rainwater. An overwhelming portion of the farmers adopted levelling of the land in between the bunds (96.67%) and construction of bunds to conserve moisture (95.56%). The majority (76.67%) of the farmers intensified agricultural activities on irrigated land. Nearly half of them (47.78%) paddy growers were practising zero tillage to save time and money.

Research limitations/implications

The current study was carried out in a few districts of Karnataka. Hence, any policy framed based on the outcomes of this study may not conform to the policy specification needs in general to other parts of the country. The farmers did not maintain record books for updating various records. Therefore, the accuracy of data depends on the memory of the respondents. However, the researcher had made every possible effort to make sure that the data collected are the best of the knowledge of the respondents and bear minimal distortions.

Practical implications

The major constraints to applying agricultural adaptation strategies in the study area have been a general lack of knowledge, expertise and data on climate change issues; a lack of specific climate change institutions to take on climate change work and the need for a better institutional framework in which to implement adaptation. Actions to address these gaps include, namely, training programmes for local government officials, dedicated research activities and post-graduate courses and the initiation of specific institutional frameworks for climate change. Furthermore, improving and strengthening human capital, through education, outreach and extension services, improves decision-making capacity at every level and increases the collective capacity to adapt.

Social implications

Hyderabad-Karnataka is already under pressure from climate stresses, which increases vulnerability to further climate change and reduces adaptive capacity. The adverse effects of climate change have a devastating effect particularly on paddy cultivation, which is the mainstay of most Hyderabad-Karnataka Region. This has affected food production with its resultant effect on widespread poverty. Farmers in the study area have developed traditional agricultural adaptation strategies to cope with climate variability and extreme events. Experience with these strategies needs to be shared among communities.

Originality/value

Though the many literatures were available on the adaptation strategies for climate change this research is one of the few studies to document the farmer led adaptation strategies. This study provides a better understanding of the importance of farmer led adaptation strategies which in turn helps to develop or modify the existing adaptation technologies to cope up with climate change. The authors have come across various adaptation strategies such as modification in cultivation practices such as shifting planting dates, water-saving techniques and strategic nutrient management. Meanwhile, we are trying to forget the ground reality that the majority of the farmers are not aware of climate-resilient production technologies. However, farmers modify themselves in this climate change scenario for sustainable production. The practise of these adaptation strategies helps to reduce vulnerability to improve their “socio-economic status” and the “quality of life”. Therefore, farmer-led adaptation strategies to confront with a change in climate require to be recorded.

Details

International Journal of Climate Change Strategies and Management, vol. 12 no. 5
Type: Research Article
ISSN: 1756-8692

Keywords

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Article

Mahdi Bastan, Reza Ramazani Khorshid-Doust, Saeid Delshad Sisi and Alimohammad Ahmadvand

Sustainable development is the management and conservation of the basic natural resources through which organizational and technological changes are lead to meet present…

Abstract

Purpose

Sustainable development is the management and conservation of the basic natural resources through which organizational and technological changes are lead to meet present and future needs of humans. In developing and analyzing the solutions based on sustainable development principles, an integrated and holistic approach needs to be pursued. Not only system dynamics has the essential tools for systemic analysis, but also it is an appropriate approach for perceiving problems and offering solutions. The aim of this study is to present an integrated and systemic model to analyze the existent dynamics in sustainable development of Iran’s farming industry.

Design/methodology/approach

To achieve the mathematical equations and values of model’s variables, a simulation is carried out using the data gathered from Damavand city, Tehran, Iran. The parameters of the model are selected and calculated considering the specifications of this case study. After modeling the system, Vensim simulation software has been employed, followed by identifying the leverage points of the model; then, a set of scenarios have been generated and tested through simulation to achieve a much improved understanding of the system’s dynamic behavior.

Findings

The results show that two factors are among the most important leverage points: “profit gained from agriculture” and “required water”. The authors could also observe that the main issue in Damavand is the lack of water for which saving policies would be a major step toward agriculture’s sustainable development in this area.

Originality/value

The paper shows how System Dynamics simulation approach can provide deep insights into the field of sustainable development and present efficient policies for agriculture sustainability.

Details

Kybernetes, vol. 47 no. 1
Type: Research Article
ISSN: 0368-492X

Keywords

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Article

Joko Mariyono

The purpose of this paper is to evaluate the implications of and assess the economic and sustainable impact of environmentally friendly technological packages introduced…

Abstract

Purpose

The purpose of this paper is to evaluate the implications of and assess the economic and sustainable impact of environmentally friendly technological packages introduced into agribusiness players in the centre of chilli-producing regions of Indonesia.

Design/methodology/approach

This study used a theory of optimisation in production as a fundamental analysis. Producers are assumed to maximise profit by allocating rational amounts of inputs as the components of technological packages. A combination of qualitative and quantitative methods was used. The rate of technology adoption was evaluated, and agribusiness performance was measured using an economic advantage and technical efficiency. Data were compiled using group discussions and individual surveys.

Findings

The packages of technologies improved economic and sustainability performance of agribusiness resulting from efficient use of agrochemicals and water resource, and increase the production. Socio-economic and technical factors influenced performance farmers, as agribusiness players responded positively towards the ecological technology packages.

Research limitations/implications

The sustainability of agribusiness was indicated by the reduction in agrochemical use and by the efficient use of water irrigation. There are other measures of sustainability, which are beyond this study. Additional studies are expected to fill the gap.

Practical implications

Considerable potential exists for broad adoption of these technological packages in Indonesia if they are disseminated effectively and in a close partnership with local extension agencies, farmers’ organisations, local non-governmental organisations and private sectors.

Originality/value

This study provides a realistic representation of a current condition because this is an empirical study conducted at the grass-root level. Sustainability of agribusiness practices was achieved with ecological technological packages.

Details

International Journal of Productivity and Performance Management, vol. 69 no. 5
Type: Research Article
ISSN: 1741-0401

Keywords

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