Search results

In recent years, zeolites have been highlighted as a new component in many industrial applications owing to their unique properties. The purpose of this study is to apply three prepared types of zeolites Na-X, Na-Y and hydroxysodalite (Na-HS) in anticorrosive paint formulations to be evaluated as a partial replacement to zinc phosphate in anticorrosive paint formulations to protect carbon steel.

The three types of zeolites were characterized using different instrumental analysis such as X-ray diffraction, scanning electron microscopy and X-ray fluorescence. Evaluation of zeolites was done using American society for material and testing. Then, they were incorporated in paint formulations based on medium oil-modified soya-bean dehydrated castor oil alkyd resin in the presence and absence of zinc phosphate. Their corrosion behavior was estimated using both immersion test and electrochemical impedance measurements in 3.5% NaCl.

Generally, the prepared zeolites exhibited good corrosion protection performance, but in presence of zinc phosphate the performance was better. This proves that, zeolites by themselves can resist corrosion but not efficiently, while in presence of zinc phosphate and owing to a synergistic effect between them, the performance was better. This opens the way to partial replacement of zinc phosphate with another safer and cheaper ingredient, which is zeolite.

The three zeolites can be applied in many industries besides the paint industry, such as reinforcing filler in rubber, plastics and ceramic composites, also can be applied in paper filling, paper coatings and electrical insulation.

The three zeolites are environmentally friendly materials that can partially replace other expensive anticorrosive pigments (e.g. zinc phosphate).

Informal learning is an effective and motivating strategy to support the learning process. Informal learning has received increased attention recently due to the coronavirus disease 2019 (COVID-19) pandemic. However, finding effective ways to facilitate innovative teaching and learning through open educational resources (OER) is a vital issue. The purpose of the current study is to investigate the informal learning characteristics (ILC) (i.e. observation, imitation, exploration, innovation and articulation) of teachers in using OER and whether these characteristics have any relationship with teachers' innovative work behavior (IWB, i.e. opportunity exploration, idea generation, idea promotion and idea realization) in schools.

The current study utilized a descriptive quantitative survey approach. A survey with three parts was developed: the Open Educational Resources Scale (OERS), the Teachers' Informal Learning Characteristics Scale (TILCS) and the Teachers' Innovative Work Behavior Scale (TIWBS). The information was gathered from a sample of 2,024 teachers working in Kuwait's public schools through an online survey.

The results revealed that social media, YouTube, PowerPoint and games were the most common open resources used by teachers. Teachers' responses on the TILCS showed that observation was the most common among teachers and exploration was the second. Responses on the TIWBS showed that idea generation was the highest. When using OER, the results showed that all five subscales of the TILCS and all four subscales of the TIWBS were linked in a good way.

This study had several limitations that should be considered in future research. First, the data collection method was self-report. Future research necessitates adopting qualitative methods such as participant observations where IWB can be monitored and documented. Another limitation is almost all teachers have smartphone with Internet access, which may have affected the results. This situation might not be found in other countries since a large percentage of young people in Kuwait use information and communication technology as is the case in other Gulf region countries.

This study expects that this kind of support will be reflected on teachers' IWB which accelerates teachers' movement toward upper IWB tasks such as idea promotion and idea realization. This support will motivate teachers to transform teachers' innovative ideas into useful applications and try to assist teachers' colleagues through conducting workshops or inviting well-known educators to present their experiences to school personnel.

This study can be a guide to help teachers be independent, self-directed, problem-solving-oriented and internally motivated by incorporating the assumptions of andragogy theory. Furthermore, this study points out the high tendency of teachers to use OER and helps to plan teachers' professional development programs that take Andragogical tendencies into account in addition to developing teachers' lifelong learning skills.

The results implied that teachers have obvious ILC toward OER, specifically through observation and exploration to create their own innovations in their work environments. With the appropriate internal and external incentives and support from school administrators, this study expects that teachers will move forward toward upper informal learning stages such as innovation and articulation and toward upper tasks in IWB such as idea promotion and idea realization. As a result, schools as places of work can go through a lot of changes if new OER-related applications and workshops are added.

Healthcare service is a process that comprises a series of touchpoints underlying the key facets of service delivery, collectively shaping the users' (i.e. patients, hospital staff, and visitors) experiences. Departing from most sensory studies dedicated to understanding the retail environment and hedonic service, this study focuses on how sensory knowledge can contribute to understanding the sensory-based experiences of hospital users and their interactions with healthcare services at multiple touchpoints.

This study employs a multi-method approach comprising two studies involving semi-structured interviews and a qualitative online survey of past patients.

Drawing upon the user-centered theory, the authors (1) consulted healthcare experts on hospital service touchpoints and standards around medical protocol; (2) explored users' needs, experiences, expectations, and evaluations of healthcare services; and (3) identified the issues and challenges faced by healthcare service users at various service touchpoints. Based on these insights, the authors proposed sensory tactics across healthcare service touchpoints that promote the well-being of major hospital users.

The proposed sensory tactics require follow-up empirical evidence. Future research could adopt robust methodological designs on healthcare environmental interventions and progress with a transdisciplinary approach to advance this research area.

The authors' experience-based framework forms the basis of a valuable toolkit for healthcare service management.

This study advances services literature by integrating sense-based marketing knowledge with healthcare service research to understand the dynamic and interactive relationship between hospital users and the environment.

The purpose of this paper is to close the gap between the theoretical nature of existing contributions in customer engagement value (CEV) and its need to practically empower business decisions. This is done by proposing a framework that consists of three techniques, each of which combines the components of CEV to make it more comprehensive and applicable. The paper also reviews and analyzes the work that has been done so far in the area of CEV whether in business to business (B2B), business to consumer (B2C) or consumer to consumer (C2C) markets.

CEV is a comprehensive term that measures the total value of the customer through capturing his transactional and non-transactional behaviors. Hence, it is an essential term for measuring the value of the customer in direct marketing. This motivates researchers to compete in developing models to maximize CEV. Meanwhile, most of the existing models are conceptual and the majority of them lack applicability due to many reasons. First, these models relied on a linear version of the CEV model, hence double-counting the value of the customer; also they weighted the components of CEV equally, which is unrealistic. Finally, the effect of the environmental components in determining the engagement level of each customer was almost ignored. In this paper, two main contributions are presented. First, a summary and analysis of the contributions of the literature in the CEV field for different market types whether in B2C, B2B or C2C. Furthermore, three modifications are added to the existing models. The first model introduces a non-linear relationship of the components of CEV. The second model is a weighted linear model of these components. Finally, the third model adds the environmental factors to the CEV components. All the proposed models are theoretical in nature, however, these models are expected to show superiority when being applied to real data sets due to their ability to capture the complexity in the relationship between the firm and its customers in real-life situations. The proposed models are expected to attract the practitioners and other researchers and they both are encouraged to apply the proposed models on real-life data sets, test their performance, compare them against each other, to be able to apply each of them on the best suitable data set and business scenario.

Based on the review and analysis that has been done on about 87 papers, it is found that the majority of the contributions that have been done in the area of CEV are theoretical in nature, in spite of the effectiveness of CEV in empowering business decision. It is also found that few researchers proposed a set of theoretical comprehensive frameworks that combined CEV’s components together. Meanwhile, those frameworks are not practically applicable.

Although the contribution of the proposed models expected to attract both researchers and practitioners, these are not applied to real-life case studies to prove their effectiveness.

The research in this paper has many industrial and managerial implications. First, it helps managers and decision takers to treat the customers as assets and cost-free resources who can work with the firm to achieve what’s both aims to (i.e. increase customer satisfaction and firm’s profitability). Second, it helps the firm to determine the total value of each customer and treat its customers accordingly. Third, it empowers the managers to do target marketing, based on grouping the customers upon their total engagement. This would save time and cost and for sure increase the profitability and customer satisfaction. Forth, the proposed models take into consideration not only the transactional behavior of the customers but also the non-transactional factors that play a significant role in formulating the relationship between the firm and its customers.

This is hereby to certify that the paper is original, neither the paper nor a part of it is under consideration for publication anywhere else. Also, this study has no conflicts of interest to disclose.

The purpose of this paper is to provide a picture of (local) e‐government impact and development philosophy in China, New Zealand, Oman, and the UK.

A survey instrument was used to collect data from policymakers in 114 civil service organisations in four countries during 2007.

Policymakers in every country report only low‐medium levels of agreement that their e‐government initiatives had yielded significant benefits for organisations and citizens alike over a broad range of performance measures concerning service quality, citizen satisfaction, productivity, and management effectiveness. In interactions with stakeholders that are both directive and maintain control over citizens, policymakers also favour the provision of online services that offer ever increasing amounts of information, rather than collaborative service channels that engage citizens in local decision making.

Less than a 100‐percent response rate gives an incomplete snapshot of the e‐government scene in the four countries studied. Also, a lack of understanding of some key e‐government issues plus cultural response bias may have led to erroneous/biased responses.

In an era in which public sector organisations worldwide are under pressure to demonstrate success in service delivery and organisational performance, policymakers do not perceive online services as an opportunity to reduce the costs of physical infrastructure or to improve democracy via shared decision‐making. Thus, further erosions of trust and participation in democracy may continue unless citizens are given similar choices in the democratic system to those they have in their everyday lives.

The paper is undertaken at the local level of government and in a diverse range of countries where the political, social, economic, and cultural environments can differ markedly. It evaluates the significance of key e‐government issues in Western, Arabic, and Eastern contexts, enabling international comparisons to be made across these cultural settings. Impacts of the e‐government initiatives on organisations and citizens are presented and compared; and policymaker attitudes to new technology having the potential to enhance the democratic process are presented.

This paper aims to develop a mathematical model for four-lobe memristor (FLM) element. The four-lobe memristive behaviour can be used in realization of hyperchaotic oscillators and implementation of multi-bit memories. For verification of the developed mathematical framework, two FLM circuit emulators have been presented using VDCC and IC LM13700, respectively.

A mathematical model for FLM has been developed in which, the condition for the existence of symmetrical four lobes, instances and coordinates of the end points of lobes has been derived and presented. Using this mathematical framework, a FLM emulator based on VDCC has been developed. To validate the possibility of practical implementation of FLM concept, an IC LM13700-based circuit has also been developed. The workability of VDCC based circuit has been verified by running simulations in PSPICE environment using CMOS VDCC model. Similarly, the behaviour of LM13700 IC-based circuit has been confirmed by SPICE model of LM13700 IC.

It has been shown mathematically that under certain conditions, third-order flux dependent equation of memductance can be used to generate four lobes on the transient v-i plane. Also, two FLM emulators without using any voltage multiplier circuit/IC have been reported.

From the best knowledge of the authors, there are no such FLM emulators that have been reported in literature so far, which operates at practical operating frequencies.

The purpose of the paper is to report an emulation configuration of a three pinch-off memristor (TPM), whose transient characteristics consist three cross-over points on the voltage-current plane, which is dissimilar to a conventional memristor. These characteristics can be very useful in memristor-based multi-bit memory devices and hyperchaotic oscillators.

The work describes the Mathematical framework for TPM and a circuit emulator based on the derived conditions. The configuration is based on five operational transconductance amplifier (OTAs) and four grounded passive elements. After which, we have verified its operation using personal simulation program with integrated circuit emphasis simulation environment. Finally, the implementation of OTA-based TPM using commercial integrated circuit (IC) LM13700 has also been presented.

It has been shown that a flux-dependent memductance expression of cubic order can show three intersections on the VI contour under certain parameter related constraints. Moreover, the OTA-based emulator reported in the work is very compact in nature because of the no use of external multiplier IC/circuitry, which has been popular in previous emulators.

For the first time, a multiple cross-over memristor emulator has been reported which can operate under practical operating conditions such as at practical operating frequencies and sinusoidal excitation.

This paper aims to provide a critical review of water generation from atmospheric air by using desiccant materials. Over the past few years, there has been very high stress on water scarcity, especially in Asian and African countries. Because of this insecurity, many countries are focusing on their research in the field of water technologies. Water generation from atmospheric air by using desiccant materials is one of the techniques among the air-to-water generators (AWGs).

A structured and systematic literature review has been presented to observe and understand the past trend/patterns in the field of water generation from atmospheric air by using desiccant materials. To understand the water generation technologies based on desiccant materials, the research papers from the years 1987 to 2022 have been studied and included.

The properties of the different and most probable desiccant materials in the field of AWGs have been discussed. A detailed review of testing reports of collected water samples has also been presented in tabular form. Finally, the economic analysis has been done and future prospects have been discussed. It is also found that the capacity of solid desiccant materials to adsorb the water is less as compared to liquid desiccant materials. But, the adsorption capacity can be improved by using composite desiccant materials.

The uniqueness of this manuscript lies in the compiling and examination of the existed published research papers, including variables such as author, year and geographical location, experimental/simulative, types of desiccant material, type of setup, desiccant material type and quantity and type of concentrator. This manuscript provides critique to the empirical and conceptual research in AWG technologies and also stimulates researchers to explore the topic very carefully.

Within a larger mandate of reviewing the key global trends concerning consumer protection in the electronic commerce (e-commerce) literature, this study aims to study the legal framework concerning e-commerce and consumer protection in the Sultanate of Oman and to analyse the current regulations concerning e-commerce and consumer protection.

This study followed the normative legal research approach and resorted to the desk research process to facilitate content analysis of literature containing consumer protection legislation and regulatory provisions in Oman in particular and the rest of the world in general.

The study reveals that consumer protection initiatives in Oman are well entrenched for offline transactions, but are relatively new and limited for e-commerce. In spite of the promulgation of consumer protection laws, electronic transaction law and cybercrime law, consumer protection measures for e-commerce in Oman do not address a large number of the global concerns necessary to build consumer confidence and trust in the online environment.

There is a dearth of information concerning Oman on this topic in the extant literature. The research also witnessed the lack of empirical data on the issue of consumer protection and e-commerce in Oman that offer a detailed database of consumer complaints and associated outcomes.

The mechanism of consumer protection in electronic transactions is not robust in many countries. Because of the lack of comprehensive and robust legislation, consumers remain vulnerable in the online contractual purchase process. Moving beyond the fragmented legislation, many countries are currently mulling an all-comprehensive e-commerce law, implications of this paper will help the policymakers in identifying the focus areas.

Consumer protection is a burning global issue in this era of consumerism. It is important to build consumer trust, transparency and integrity of transactions to reduce the risk and uncertainties of purchase.

Consumer protection studies conducted in the context of Oman, hitherto, deal more with data protection and dispute resolution mechanisms, and less with legal provisions, regulations and consumer confidence. The study shares newer insights based on a systematic review of legal and business databases. It is the first study of its kind in the context of Oman and the Middle East in general.

The purpose of this paper is to examine the nature and structure of Islamic investment funds and evaluate their governance.

The methodology employed is the conceptual framework of Islamic economics.

It is found that Islamic investment funds have grown rapidly this decade: in Malaysia alone, the number of shari'a‐compliant funds has grown from 17 in 2000 to 149 in 2008, and at a global level there are 650 funds in operation. However, the industry has developed in a particular way, by focusing on negative screens, and removing from investments those activities deemed to be unacceptable to Islamic precepts, rather than pursuing as well the implementation of other aspects of the Islamic ethos.

The conclusion reached is that, if the Islamic investment fund industry is to provide more completely for the religious and financial aspirations of investors, it needs to go beyond the negatives and to also accentuate the positive and, drawing upon Islamic governance guidelines, actively seek out investments that have a positive impact on society and the environment and promote the welfare of the community. These issues hitherto have been largely unexplored.