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Article
Publication date: 11 December 2018

Walid Belmaghraoui, Aimad Mazkour, Hicham Harhar, Mourad Harir and Souad El Hajjaji

This study aims to investigate the corrosion inhibition effect of extracted oil from Ziziphus lotus fruit on corrosion of C38 carbon steel in 5.5 M H3PO4 solution using…

Abstract

Purpose

This study aims to investigate the corrosion inhibition effect of extracted oil from Ziziphus lotus fruit on corrosion of C38 carbon steel in 5.5 M H3PO4 solution using potentiodynamic polarization and impedance techniques.

Design/methodology/approach

Oil composition was determined using gas chromatography, and the results showed that oleic and palmitic acids present approximately 84.0 per cent of its total chemical content. Electrochemical impedance spectroscopy (EIS) data were analyzed by adapting it to a well-developed electric circuit model. The inhibition efficiency of Z. lotus oil was calculated and compared using Tafel polarization and EIS.

Findings

Accordingly, the oil extract was found to act as an anodic type inhibitor. Furthermore, inhibition efficiency of Z. lotus oil extract increase with oil concentrations and achieve approximately 70.5 per cent at 3 g/L solution of Z. lotus oil.

Originality/value

The results obtained from different tested methods were in line, and the oil was able to reduce significantly the kinetics of the corrosion process of C38 carbon steel.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 2 January 2018

Ayssar Nahle, Fadoua El-Hajjaji, Abdeslam Ghazoui, Nour-Eddine Benchat, Mustapha Taleb, Rafik Saddik, Abdelmalik Elaatiaoui, Mohammed Koudad and Belkheir Hammouti

The purpose of this paper is to study the inhibition effect of (6-phenyl-3-oxopyridazin-2-yl) acetohydrazide (GP4) on the corrosion of mild steel in acidic medium by…

Abstract

Purpose

The purpose of this paper is to study the inhibition effect of (6-phenyl-3-oxopyridazin-2-yl) acetohydrazide (GP4) on the corrosion of mild steel in acidic medium by gravimetric measurements, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS).

Design/methodology/approach

Weight loss measurements, potentiodynamic tests and EIS were performed during this study.

Findings

(6-phenyl-3-oxopyridazin-2-yl) acetohydrazide (GP4) was found to be a very efficient inhibitor for mild steel in 1.0 M HCl solution, reaching about 85 per cent with inhibitor concentration 1.0 × 10-3 M at 303 K.

Practical implications

(6-phenyl-3-oxopyridazin-2-yl) acetohydrazide (GP4) was found to play an important role in the corrosion inhibition of mild steel in acidic solution.

Originality/value

This paper is intended to be added to the family of pyridazine derivatives which are highly efficient inhibitors and can be used in the area of corrosion prevention and control.

Details

Anti-Corrosion Methods and Materials, vol. 65 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Book part
Publication date: 25 April 2022

Do Tien Sy, Zwe Man Aung and Nguyen Thanh Viet

Claims and disputes are often unavoidable in the construction industry due to its unique and complex characteristics involving the massive investment of capital, lengthy

Abstract

Claims and disputes are often unavoidable in the construction industry due to its unique and complex characteristics involving the massive investment of capital, lengthy project duration, and multiple project stakeholders. This chapter intends to identify the critical construction claims attributes, compare the perceptions of major stakeholders on different claim attributes, and investigate the contrast of the top five claim attributes between this study and previous ones. The literature review resulted in 48 claim attributes responsible for the construction project schedule delays. These attributes were then presented to Vietnam construction industry (VCI) practitioners in the form of a questionnaire survey. Data analysis was done based on the collected 113 qualified samples. Relative importance index (RII) was applied to determine the ranking of claim attributes. The results were that the top five causes of claims, that is, payment delays, mistakes by contractor during construction stage, delays in work progress by the contractor, financial failure of the contractor, and frequently changing requirements by the owner, lead to the schedule delays in VCI. These findings can assist the local industry practitioners and foreign companies seeking a share in the VCI market in understanding the causes of construction claims comprehensively and formulating the countermeasures to minimise their impacts and hence reduce the unnecessary losses and raise the likelihood of success as well as maintain sustainable relationships among stakeholders.

Details

Sustainability Management Strategies and Impact in Developing Countries
Type: Book
ISBN: 978-1-80262-450-2

Keywords

Article
Publication date: 1 August 2004

Susan Baker, Keith E. Thompson, Julia Engelken and Karen Huntley

The organic food market is one of the most promising in Europe, although national markets have developed at different rates. In Germany, organics' share of total food…

12755

Abstract

The organic food market is one of the most promising in Europe, although national markets have developed at different rates. In Germany, organics' share of total food turnover is 2.7 per cent compared with 1 per cent in the UK. This study explores the reasons why the behaviour of consumers in the UK and Germany has been so divergent despite both groups of consumers holding similar attitudes about organic foods. This was done by investigating the underlying values driving food choice behaviour using means‐end theory and Laddermap 5.4 software. In both cases the dominant means‐end hierarchies were uncovered and the cognitive process mapped. Although similarities emerged with respect to values concerned with health, wellbeing and the enjoyment of life, product attributes sought in order to achieve these values were different between the groups. A major difference was found in the absence among the UK group of any connection between organic food and the environment.

Details

European Journal of Marketing, vol. 38 no. 8
Type: Research Article
ISSN: 0309-0566

Keywords

Article
Publication date: 6 August 2018

Ajid ur Rehman

This study aims to apply unit root test to investigate the behavior of Chinese firms toward their leverage policy. The study is based on two influential and competing…

Abstract

Purpose

This study aims to apply unit root test to investigate the behavior of Chinese firms toward their leverage policy. The study is based on two influential and competing theories of capital structure.

Design/methodology/approach

This study applies unit root test to investigate the behavior of Chinese firms toward their leverage policy. The study is based on two influential and competing theories of capital structure. Trade off theory advocates that firms have a target level of leverage ratio and that firms try to achieve that optimal leverage ratio, whereas pecking order theory argues that firms have no target level of leverage and that they follow a specific pattern of leverage. For this purpose, this study applies a Fisher type unit root test to 12,808 firm level observations. The data are unbalanced and cover a period from 1991 to 2014.

Findings

The results reveal the presence of a stationary behavior across short-term, long-term and total leverage policies. For short-term leverage policy, 21 per cent firms show stationary behavior, while for long-term, 20 per cent show a targeting behavior; for the total leverage policy 17 per cent of firms are found to follow a tradeoff model. To make the findings more interesting sample was further classified into profit and loss making firms. The study finds that loss making firms do not follow a target level of leverage in China. Furthermore, unit root is applied to all firms before and after crises-2008. It is revealed that stationary behavior is more prevalent before crises-2008.

Originality/value

This study is highly important from the point of view that it quantifies firms into distinct categories of following specific model of capital structure. To the best of the author’s knowledge, the findings of this study add to current research knowledge about Chinese firms with respect to adjustment behavior toward a target capital structure.

Details

Journal of Asia Business Studies, vol. 12 no. 3
Type: Research Article
ISSN: 1558-7894

Keywords

Book part
Publication date: 6 January 2016

Antonello D’Agostino, Domenico Giannone, Michele Lenza and Michele Modugno

We develop a framework for measuring and monitoring business cycles in real time. Following a long tradition in macroeconometrics, inference is based on a variety of…

Abstract

We develop a framework for measuring and monitoring business cycles in real time. Following a long tradition in macroeconometrics, inference is based on a variety of indicators of economic activity, treated as imperfect measures of an underlying index of business cycle conditions. We extend existing approaches by permitting for heterogenous lead–lag patterns of the various indicators along the business cycles. The framework is well suited for high-frequency monitoring of current economic conditions in real time – nowcasting – since inference can be conducted in the presence of mixed frequency data and irregular patterns of data availability. Our assessment of the underlying index of business cycle conditions is accurate and more timely than popular alternatives, including the Chicago Fed National Activity Index (CFNAI). A formal real-time forecasting evaluation shows that the framework produces well-calibrated probability nowcasts that resemble the consensus assessment of the Survey of Professional Forecasters.

Book part
Publication date: 21 September 2020

Eva Medina and Ainhoa Herrarte

Women’s empowerment is a multidimensional concept that encompasses different aspects such as access to education, freedom to make vital decisions, labor market access…

Abstract

Women’s empowerment is a multidimensional concept that encompasses different aspects such as access to education, freedom to make vital decisions, labor market access, wages, and political participation, among others. In this research, the authors construct a multidimensional index of women’s empowerment that takes into account individual resources and achievements and analyze its evolution across countries using data from the United Nations Development Programme and the United Nations for 17 gender indicators across 96 countries over the period 1995–2015. By means of exploratory and confirmatory factor analysis, the authors identify three dimensions of women’s empowerment: reproductive health, economic participation, and basic education. In addition, the authors use cluster techniques to classify countries into four groups with similar behavior patterns in the different domains of women’s empowerment: a group of countries with high levels in the domains of reproductive health and basic education but with low levels in economic participation; a group of countries with high levels in the domains of reproductive health and economic participation that should pay attention to education; a group of countries with medium levels across the three dimensions of women’s empowerment, especially in reproductive health and economic participation; and a group of countries with low levels in all the dimensions of women’s empowerment, especially in reproductive health and basic education. The comparison of these different patterns serves to highlight the aspects in which improvements have been made or, on the contrary, to highlight the obstacles that are hindering the improvement of gender equality. Finally, the results suggest that advancements in women’s empowerment improve the countries’ level of development.

Details

Advances in Women’s Empowerment: Critical Insight from Asia, Africa and Latin America
Type: Book
ISBN: 978-1-83982-472-2

Keywords

Book part
Publication date: 4 July 2019

Eser Yeşildağ

Internet banking has a very important place in the banking sector. The majority of banks located in Turkey offer many technological services. However, it is also seen that…

Abstract

Internet banking has a very important place in the banking sector. The majority of banks located in Turkey offer many technological services. However, it is also seen that the use of internet banking does not reach the desired levels. The purpose of this study is to determine the factors affecting the internet banking preferences of the bank customers and the relationships between the demographic characteristics of bank customers and internet banking usage in Usak city of Turkey. Data from the questionnaires were analyzed using factor analysis, t-test and ANOVA analysis. As a result, seven factors were found to be effective in the use of internet banking. These are (1) “effect of social circle”; (2) “benefits of internet banking”; (3) “the usefulness of internet banking”; (4) “speed and time savings”; (5) “ease of use and cost”; (6) “the ability to use the internet and the advantages of internet banking”; and (7) “the suitability to life and work style.” In addition, it was determined that there is a significant relationship between the demographic characteristics of bank customers and internet banking usage.

Details

Contemporary Issues in Behavioral Finance
Type: Book
ISBN: 978-1-78769-881-9

Keywords

Article
Publication date: 31 May 2022

Na Lu, Wei Zhou and Zhi Wu Dou

Intelligent manufacturing has attracted extensive attention from national strategy, academic research and enterprises' practices. The purpose of this study is to…

Abstract

Purpose

Intelligent manufacturing has attracted extensive attention from national strategy, academic research and enterprises' practices. The purpose of this study is to investigate the influence of intelligent manufacturing on performance in manufacturing firms. Moreover, how intelligent manufacturing technology affects enterprise performance, this study provided a practice that can be replicated by other businesses.

Design/methodology/approach

This study uses text mining to collect the intelligence level of Chinese listed companies. It uses quantitative analysis to test the proposed model based on samples of 2,091 manufacturers.

Findings

Intelligent manufacturing has positive effect on short-term performance and long-term performance. Intelligent manufacturing can empower firms with ambidextrous capabilities, including exploit capability and explore capability. Exploit capability has positive effects on short-term performance and long-term performance. Explore capability has negative effects on short-term performance, but has positive effects on long-term performance.

Originality/value

On the theoretical side, it enriches the research framework between intelligent manufacturing and enterprise performance. This study explains the preconditions and results of ambidextrous capabilities. Moreover, based on the practice-based view (PBV), this study proposes that technologies can be used as strategies, filling a gap in the existing research on strategic management. On the practical side, how to quantify the intelligent manufacturing level of enterprises provides a certain reference. Also, this study provides an easy to imitate practice that can serve as a model for under-performing enterprises.

Details

Industrial Management & Data Systems, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 28 March 2022

Luisa Fernanda Restrepo, Diego Tellez-Falla and Jesús Godoy-Bejarano

The purpose of this study is to estimate the effect of information disclosure on firm value for firms in the Integrated Latin American Market (MILA) over the period 2011–2017.

Abstract

Purpose

The purpose of this study is to estimate the effect of information disclosure on firm value for firms in the Integrated Latin American Market (MILA) over the period 2011–2017.

Design/methodology/approach

The study uses structural equation modeling (SEM), where the latent variable “Disclosure Quality” is measured using five textual analysis variables as indicators. The final sample is composed of 1,412 observations representing 198 firms from which we were able to collect annual reports and financial information required.

Findings

The authors find a positive and statistically significant effect of “Disclosure Quality” on firm value. The indirect effect of language on firm value is also captured. Text similarity, negative tone, readability and text length in corporate disclosure are negatively related to firm value while using positive tone is positively related. In the exploratory analysis, the authors have significant effects of textual measures on disclosure quality.

Originality/value

The research is original and unique as it approaches the relation between disclosure quality and market valuation of the firm using SEM for firms participating in the MILA.

Propósito

El propósito es estimar el efecto de la calidad en la revelación de información sobre el valor de la firma para empresas que hacen parte del mercado integrado Latinoamericano (MILA) durante el periodo 2011–2017.

Diseño/metodología/aproximación

El estudio utiliza un modelo de ecuaciones estructurales (SEM), donde la variable latente “Calidad de la información” es medida usando cinco variables de análisis textual como indicadores. La muestra final está conpuesta de 1,412 observaciones que representan 198 empresas para las cuales se pudo recolectar los reportes anuales y la información financiera requerida

Hallazgos

Nosotros encontramos una relación positiva y estadísticamente significativa entre la variable “Calidad de la información” y valor de la firma. El efecto indirecto del lenguaje en el valor de la firma es igualmente observado. La similaridad en el texto, el tono negativo, la legibilidad y el largo del texto en la revelación corporativa están relacionados de manera negativa con el valor de la firma mientras que el tono positivo está relacionado de manera positiva. En el análisis exploratorio, nosotros encontramos un efecto estadísticamente significativo entre las medidas de texto y la calidad de la revelación.

Originalidad

La investigación es original y única en cuanto aproxima la relación entre calidad de la revelación y desempeño de la firma usando un modelo de ecuaciones estructurales para las firmas participantes del mercado integrado Latinoamericano (MILA).

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