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Article
Publication date: 17 December 2021

Mojtaba Rezaei, Alberto Ferraris, Donatella Busso and Fabio Rizzato

This study aims to examine the role of organisational democracy (OD) in facilitating the knowledge sharing (KS) process within companies, thus considering the effect of different…

Abstract

Purpose

This study aims to examine the role of organisational democracy (OD) in facilitating the knowledge sharing (KS) process within companies, thus considering the effect of different OD principles.

Design/methodology/approach

The authors used data collected through a questionnaire on a sample of 254 employees at private universities and colleges to test the relationship between OD and KS. Data were analysed using the structural equation modelling technique.

Findings

Overall, OD has a direct and significant effect on facilitating KS in organisations. Also, the results showed that there are different degrees and intensities among the individual principles (sub-concepts) of OD and KS.

Practical implications

The findings highlight the important role of democracy in an organisation to enhance the organisational climate and employees’ behaviours, thus leading to higher KS outcomes. Also, results, provide an opportunity for managers to consider enhancing democracy in an organisation for improving internal collaboration effectiveness in KS.

Originality/value

This paper sheds light and adds new knowledge to embryonic studies that are directed towards the integration of democracy within the main concept of knowledge management (KM). This emphasises the need to use and stimulate OD and its principles for improving the effectiveness of KM practices with specific attention to KS.

Details

Journal of Knowledge Management, vol. 26 no. 10
Type: Research Article
ISSN: 1367-3270

Keywords

Article
Publication date: 4 July 2016

G.H. Elgemeie, K.A. Ahmed, E.A. Ahmed, M.H. Helal and D.M. Masoud

The purpose of this study is to successfully implement microwave irradiation for the rapid synthesis of novel fluorescent dyes. The prepared dyes are then applied for printing of…

Abstract

Purpose

The purpose of this study is to successfully implement microwave irradiation for the rapid synthesis of novel fluorescent dyes. The prepared dyes are then applied for printing of polyester and polyamide by silk screen printing process.

Design/methodology/approach

A series of new N′-(methylene)-2-imino-2H-chromene-3-carbohydrazide derivatives 3a–r were synthesised in excellent yield and high atom economy by the Knoevenagel condensation of salicylaldehyde derivatives 1 and cyano-N′-methyleneaceto-hydrazide derivatives 2 in the presence of piperidine catalyst. The optical properties of the synthesised compounds were recorded; all of the compounds were found to be fluorescent in 1, 4-dioxane solution; they all emitted blue light (440-460 nm). This work shows that the optical properties strongly depend on the nature of the substituent, and indicate which type of substituent is favourable for a given application. It confirms that iminocoumarin derivatives could lead to a new generation of fluorescent probes, prone to easy modification of their chemical structure. These synthesised dyes are used to print polyester and polyamide fabrics using synthetic thickener in the printing paste for silk screen technique.

Findings

The structures of synthesised dyes were established and confirmed for the reaction products on the basis of their elemental analysis and spectral data (MS, IR and 1H-NMR). The suitability of the prepared dyestuffs for traditional printing on polyester and polyamide fabrics has been investigated. The prints obtained using the synthesised dyes were found to possess high colour strength and excellent overall fastness properties but relatively low light fastness.

Research limitations/implications

The synthesised fluorescent dyes were prepared by a simple reaction process in microwave. The optical properties for obtained dyes show include the fact that it will have various important applications. In addition, they were used for printing synthetic fabrics and were found to have good results.

Practical implications

The new fluorescent dyes’ system has excellent printing properties. Also they are superior in terms of yield, purity, colour strength and fastness properties which may lend them valuable commercial production.

Originality/value

The result of this work aimed to define the scope and limitation of the procedures for the synthesis of novel iminocoumarin dyes via a simple and economic way.

Details

Pigment & Resin Technology, vol. 45 no. 4
Type: Research Article
ISSN: 0369-9420

Keywords

Book part
Publication date: 11 August 2014

Umma Habiba and Rajib Shaw

All over the world, Bangladesh is well known as a flood- and cyclone-affected country. But in the recent years the slow onset disaster of drought is more frequent in Bangladesh…

Abstract

All over the world, Bangladesh is well known as a flood- and cyclone-affected country. But in the recent years the slow onset disaster of drought is more frequent in Bangladesh due to climatic as well as nonclimatic variability. As a consequence, agriculture along with its dependent farmers’ livelihoods tremendously experience its adverse impacts. Therefore, the main focus of this chapter is to discuss about drought, its effects on different sectors, and how in different levels a number of drought risk management actions are carried out to cope with this insidious disaster in the context of Bangladesh.

Details

Water Insecurity: A Social Dilemma
Type: Book
ISBN: 978-1-78190-882-2

Keywords

Article
Publication date: 1 April 1991

S. RAKHEJA and A.K.W. AHMED

A local equivalent linearization methodology is proposed to simulate non‐linear shock absorbers and dual‐phase dampers in the convenient frequency domain. The methodology based on…

Abstract

A local equivalent linearization methodology is proposed to simulate non‐linear shock absorbers and dual‐phase dampers in the convenient frequency domain. The methodology based on principle of energy similarity, characterizes the non‐linear dual‐phase dampers via an array of local damping constants as function of local excitation frequency and amplitude, response, and type of non‐linearity. The non‐linear behaviour of the dual‐phase dampers can thus be predicted quite accurately in the entire frequency range. The frequency response characteristics of a vehicle model employing non‐linear dual‐phase dampers, evaluated using local linearization algorithm, are compared to those of the non‐linear system, established via numerical integration, to demonstrate the effectiveness of the algorithm. An error analysis is performed to quantify the maximum error between the damping forces generated by non‐linear and locally linear simulations. The influence of damper parameters on the ride improvement potentials of dual‐phase dampers is further evaluated using the proposed methodology and discussed.

Details

Engineering Computations, vol. 8 no. 4
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 8 February 2021

Ebtsam Abdelmowla Ahmed, Galal Elgemeie and Kawther Abd-Elzaher Ahmed

This study aims to represent a successful simple method for the synthesis of some novel dyes based on thiazole derivatives and their applications in textile printing.

Abstract

Purpose

This study aims to represent a successful simple method for the synthesis of some novel dyes based on thiazole derivatives and their applications in textile printing.

Design/methodology/approach

2-(benzo[d]thiazol-2-ylmethyl)thiazol-4(5H)-one compound is prepared by convention heating and microwave technique then used as a coupling agent, which reacts with different diazonium Salt to form diazo dyes.

Findings

The synthesized diazo dyes are confirmed via spectral data (IR,1H-NMR, 13C-NMR and Mass spectra). The dyes are used to print polyester fabric. The obtained results clarified that the prints have good color strength, brilliant color and highly durable antibacterial activity.

Originality/value

The authors designed efficient synthesis for some novel thiazolone dyes. The novel procedure features short-reaction time, very good yields and a simple workup. The authors studied the antibacterial activity and their application in printing polyester fabrics.

Details

Pigment & Resin Technology, vol. 51 no. 1
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 21 December 2020

Alireza Vafaei, Darren Henry, Kamran Ahmed and Mohammad Alipour

This study aims to examine the impact of board female participation on Australian firms’ innovation.

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Abstract

Purpose

This study aims to examine the impact of board female participation on Australian firms’ innovation.

Design/methodology/approach

Data are from the 500 largest Australian Securities Exchange (ASX)-listed companies for 2004–2015. Measures of innovation concern input (research and development expenditure and intangible assets) and output (patents registered) indicators.

Findings

A positive and significant association exists between female director participation and firm innovation activity. This association exists across industry classifications independent of technological importance and is particularly driven by materials and health-care sectors. Findings support calls for more board diversity in line with board female membership positively influencing innovative investment and development activities.

Practical implications

The economic efficacy of the latest revisions to the ASX Corporate Governance Council principles and recommendations (“ASX CGC revisions”) is supported. Diverse boards are a strong source of innovation. Regulators and corporations can use the findings to establish principles and practices that promote female board diversity.

Originality/value

This study is the first to examine the link between board diversity and corporate innovation in Australia where there is under-representation of women on corporate boards and in key management positions. Also lacking are formal legislative or governance policy mandates on board gender diversity. Beyond confirming a positive association between board diversity and levels of corporate innovation, this paper provides new findings that this relationship is driven by women who are non-executive (independent) directors, independent of the underlying technology intensity of firms and moderated by the nature of firm-level profitability and growth opportunities.

Details

International Journal of Accounting & Information Management, vol. 29 no. 2
Type: Research Article
ISSN: 1834-7649

Keywords

Article
Publication date: 1 October 2018

Amine Allaoui, Cristina Barranquero, Sanaa Yahia, Luis Vicente Herrera-Marcos, Souhila Benomar, Mourad Jridi, María Ángeles Navarro, Maria Jesús Rodriguez-Yoldi, Moncef Nasri, Jesús Osada and Ahmed Boualga

This paper aims to investigate the in vivo hypocholesterolemic property of fenugreek proteins (FP), Purafect-fenugreek protein hydrolysate (PFPH) and Esperase-fenugreek protein…

Abstract

Purpose

This paper aims to investigate the in vivo hypocholesterolemic property of fenugreek proteins (FP), Purafect-fenugreek protein hydrolysate (PFPH) and Esperase-fenugreek protein hydrolysate (EFPH) on high cholesterol (HC)-fed rats.

Design/methodology/approach

Rats were randomized into five groups: four were fed for four weeks a hypercholesterolemic diet and the tested products were given by gavage. The fifth group was taken as control (C) receiving the same diet without cholesterol.

Findings

Results showed that the elevated aspartate aminotransferase activity in HC group plasma was significantly corrected by FP and EFPH administration (−33 per cent; p = 0.0003). HC liver lipids and total cholesterol (TC) contents were not markedly affected by FP and EFPH. However, liver triglycerides (TG) contents trended to decrease in FP rats vs HC (p = 0.07), while, the TG decrease was significant in groups fed the proteins hydrolysates (p = 0.02). On the other hand, serum TC and TG decreased by 53 per cent (p = 0.0003) and 20 per cent (p = 0.04), respectively, in FP treated rats compared to HC group. This decrease was associated with a high fecal cholesterol excretion (2.5-fold higher in FP vs HC; p = 0.0001). Likewise, EFPH-treated rats exhibited lower TC compared to HC rats (p = 0.004). The very low density lipoprotins was the main affected fraction in these two groups, while there were no significant difference in apolipoproteins (Apo) B, A-I and A-IV contents between the different groups, except in FP group, where Apo A-I and A-IV decreased by 26 and 17 per cent, respectively, compared to C rats (p = 0.02). The high density lipoproteins (HDL) of rats treated with proteins hydrolysates showed a better antioxidant property compared to those of HC rats, which was accompanied with an increase in paraoxonase activity when compared to HC group.

Originality/value

Unlike PFPH which had almost no effect, FPs and EFPH could constitute a nutraceutical ingredient in cardiovascular disease management.

Details

Nutrition & Food Science, vol. 48 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 October 2011

Allam Ahmed and Kobena T. Hanson

There is now real optimism of the prospects of Africa reclaiming the 21st century given its recent sterling growth performance and the number of successful reforms undertaken…

Abstract

There is now real optimism of the prospects of Africa reclaiming the 21st century given its recent sterling growth performance and the number of successful reforms undertaken. There have been considerable and noticeable efforts to invest in innovation, infrastructure, integration, institutions and a revamp of incentive systems to develop new values that allow for transparency, accountability and greater social inclusion. New forms of leaderships have emerged at various social levels and institutions to drive a development agenda based on peer‐learning and knowledge‐sharing. Africa, in so doing, is unearthing deep skills and the reaping low‐hanging fruits needed to speed its ambitions to attain the Millennium Development Goals (MDGs) and sustainable development. This broad development agenda has required Africa to adopt strategic and practical solutions to the development challenges it faces. This volume interrogates a number of issues that are crucial for the attainment of sustainable development in Africa: a responsive governance framework, the demographic transition and youth bulge, conflict and related dynamics – such as disarmament and demobilisation, capacity building in post‐conflict and fragile states, the role of donors in enhancing (or otherwise) local development efforts, the need to understand the “softer‐side” of capacity development; and above all the role of savvy and strategic leadership. Understanding these issues and beyond, by organizations like the African Capacity Building Foundation (ACBF), will determine whether Africa will achieve its development ambitions in the very near future.

Details

World Journal of Entrepreneurship, Management and Sustainable Development, vol. 7 no. 2/3/4
Type: Research Article
ISSN: 2042-5961

Keywords

Article
Publication date: 1 October 2011

Allam Ahmed and Kobena T. Hanson

Today, more so than ever before, the African Continent is confronted with many challenges on its path to sustained growth and development. There is no denying the fact that Africa…

Abstract

Today, more so than ever before, the African Continent is confronted with many challenges on its path to sustained growth and development. There is no denying the fact that Africa needs to substantially improve growth performance if it is to achieve the Millennium Development Goals (MDGs). These various challenges facing Africa’s sustainable development were the main focus of the 20th Anniversary Summit of the African Capacity Building Foundation (ACBF) held in the picturesque city of Kigali, Rwanda ‐ under the theme ‘The Future of Africa is Now! The Critical Role of Capacity Development. The aim of this introductory paper of the special issue is to provide a summary of the key presentations from the Summit with special focus on leadership, innovation and the role of the private sector and science and technology, networks of skills and knowledge, rebuilding after conflict, and sustainable support to capacity development. Moreover the paper will also provide a summary of the steps outlined by the summit to build capacities for emerging challenges beyond the MDG. The paper will also include an overview of the ACBF’s flagship publication‐Africa Capacity Indicators Report (ACIR) launched during the Summit and finally conclude by highlighting a key outcome of the Summit ‐ ‘Kigali Resolution’.

Details

World Journal of Science, Technology and Sustainable Development, vol. 8 no. 2/3
Type: Research Article
ISSN: 2042-5945

Keywords

Article
Publication date: 28 February 2024

Ahmed Jan, Muhammad F. Afzaal, Muhammad Mushtaq, Umer Farooq and Muzammil Hussain

This study investigates the flow and heat transfer in a magnetohydrodynamic (MHD) ternary hybrid nanofluid (HNF), considering the effects of viscous dissipation and radiation.

Abstract

Purpose

This study investigates the flow and heat transfer in a magnetohydrodynamic (MHD) ternary hybrid nanofluid (HNF), considering the effects of viscous dissipation and radiation.

Design/methodology/approach

The transport equations are transformed into nondimensional partial differential equations. The local nonsimilarity (LNS) technique is implemented to truncate nonsimilar dimensionless system. The LNS truncated equation can be treated as ordinary differential equations. The numerical results of the equation are accomplished through the implementation of the bvp4c solver, which leverages the fourth-order three-stage Lobatto IIIa formula as a finite difference scheme.

Findings

The findings of a comparative investigation carried out under diverse physical limitations demonstrate that ternary HNFs exhibit remarkably elevated thermal efficiency in contrast to conventional nanofluids.

Originality/value

The LNS approach (Mahesh et al., 2023; Khan et al., 20223; Farooq et al., 2023) that we have proposed is not currently being used to clarify the dynamical issue of HNF via porous media. The LNS method, in conjunction with the bvp4c up to its second truncation level, yields numerical solutions to nonlinear-coupled PDEs. Relevant results of the topic at hand, obtained by adjusting the appropriate parameters, are explained and shown visually via tables and diagrams.

Details

Multidiscipline Modeling in Materials and Structures, vol. 20 no. 2
Type: Research Article
ISSN: 1573-6105

Keywords

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