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Article
Publication date: 29 April 2014

Khaled Alawadhi, Mylène Martinez, Abdulkareem Aloraier and Jalal Alsarraf

The aim of this investigation was to compare the performance of three typical oil field carbon dioxide corrosion inhibitors in controlling preferential weld corrosion (PWC) of X65…

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Abstract

Purpose

The aim of this investigation was to compare the performance of three typical oil field carbon dioxide corrosion inhibitors in controlling preferential weld corrosion (PWC) of X65 pipeline steel in artificial seawater (3.5 weight per cent) saturated with carbon dioxide at one bar pressure.

Design/methodology/approach

A novel rotating cylinder electrode (RCE) apparatus was used to evaluate the effect of flow on the inhibition for the weld metal (WM), heat-affected zone (HAZ) and parent material. To fulfill this objective, the galvanic currents flowing between the weld regions were recorded using parallel zero-resistance ammeters, and the self-corrosion rates of the couples were obtained by linear polarization resistance measurements.

Findings

The results showed that when 30 ppm of green oil field inhibitors were present in the service environment, a current reversal took place, resulting in accelerated weld corrosion. At high shear stress, the currents increased and further reversals occurred. The inhibitors were more effective in controlling the self-corrosion rates of the parent material than of the WM and HAZ material. It was concluded that PWC was caused by unstable conditions in which the inhibitor film was selectively disrupted from the WM and HAZ, but remained effective on the parent material.

Originality/value

Electrochemical corrosion rate measurements were carried out using an RCE produced from the different regions of the weld. An advantage of using the RCE is that the hydrodynamic conditions are very well defined, and it is feasible to translate the conditions that are known to exist in a production pipeline to those used in laboratory tests.

Details

Anti-Corrosion Methods and Materials, vol. 61 no. 3
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 3 April 2018

Khaled Ahmed Al Mansoori, Jawahitha Sarabdeen and Abdel Latif Tchantchane

E-government is new to the public administration sector of Abu Dhabi and it is rapidly expanding. The purpose of this paper is to explore the factors that might motivate citizens…

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Abstract

Purpose

E-government is new to the public administration sector of Abu Dhabi and it is rapidly expanding. The purpose of this paper is to explore the factors that might motivate citizens to adopt the e-government public services provided by the Government of Abu Dhabi Emirate. The insights of the study will help government leaders to plan the delivery of public services effectively.

Design/methodology/approach

The study surveyed 638 United Arab Emirates (UAE) citizens living in three main districts of the Abu Dhabi Emirate. The research used an exploratory factor analysis that conforms the validity of the theoretical model to the data collected, confirmatory analysis to extract the latent factors and both multiple regression and structural equation modelling to test the research hypotheses.

Findings

The finding revealed that internet trust and performance expectancy was the strongest predictors of intention to use e-government services. Effort expectancy, facilitating conditions and trust had a positive influence on behavioural intention (BI). However, social influence (SI) did not have a significant effect. Gender, age and experience did not affect the relationship between SI and BI. It was also found that BI to use e-government services had a significant influence on the actual use of e-government sites.

Practical implications

When the government gets to know the major factors that affect the adoption of e-government services in Abu Dhabi, it can maximise its returns on ICT infrastructure investments by providing efficient service that could be adopted by the citizens.

Originality/value

The research has theoretical and practical value. Though the unified theory of acceptance and use of technology (UTAUT) model has previously been used in organisational settings, the present study uses a modified version in the context of citizens’ acceptance and use of e-government services. The present study thus provides an extension of the UTAUT model that could be suitable for developing countries such as the UAE.

Details

Information Technology & People, vol. 31 no. 2
Type: Research Article
ISSN: 0959-3845

Keywords

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Article
Publication date: 21 May 2021

Hamed Khatibi, Suzanne Wilkinson, Mostafa Baghersad, Heiman Dianat, Hidayati Ramli, Meldi Suhatril, Ahad Javanmardi and Khaled Ghaedi

This paper aims to develop a framework that could establish and further the terminology of smart city/resilient city discourse in that resilience could support urban “smartness”…

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Abstract

Purpose

This paper aims to develop a framework that could establish and further the terminology of smart city/resilient city discourse in that resilience could support urban “smartness”, a term that is widely argued being not easily measured nor quantifiably assessed.

Design/methodology/approach

The qualitative approach was employed, and based on selected keywords, a systematic literature review was carried out to understand the main themes within the smart city and resilient city concepts databases. Upon screening, 86 papers were used and synthesised through the meta-synthesis method using both synthesis approach, meta-aggregation and meta-ethnography that systematically identifies both properties and characteristics, to build an innovative framework as an indicator-based smart/resilience quantification model.

Findings

Two novel frameworks are proposed, smart resilient city (SRC) and resilient smart city (RSC), as guidelines regulatory that establish a city's smartness and resilience.

Research limitations/implications

The quantitative research phase is not provided as the framework builds on the exploratory approach in which the model is proposed through the postulation of data definitions.

Practical implications

Although the study's scope was limited to the city, proposed frameworks may be interpreted for other contexts that deal with the topic of resilience and smart.

Originality/value

The established framework proposal would encourage further exploration in context, serving as an inspiration for other scholars, decision-makers, as well as municipalities to keep strengthening smart city through resilience factors.

Details

Built Environment Project and Asset Management, vol. 11 no. 4
Type: Research Article
ISSN: 2044-124X

Keywords

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