Yasser Assem, Heba A. Mohamed, Rana Said and Ahmed El-Masry
The purpose of this paper is to prepare amphiphilic block copolymers polyethylene adipate-block-polyethylene glycol (PEA-b-PEG)s and study their performance as plasticizers in…
Abstract
Purpose
The purpose of this paper is to prepare amphiphilic block copolymers polyethylene adipate-block-polyethylene glycol (PEA-b-PEG)s and study their performance as plasticizers in rotogravure ink formulations.
Design/methodology/approach
Series of amphiphilic block copolymers (PEA-b-PEG1), (PEA-b-PEG2), (PEA-b-PEG3), (PEA-b-PEG4) and (PEA-b-PEG5) were prepared by the reaction of adipic acid, ethylene glycol and polyethylene glycol of different molecular weights (300, 1,000, 2,000, 10,000 and 20,000 g/mol), respectively. Full characterization of the prepared copolymers was achieved using Fourier Transfer Infrared Spectroscopy (FTIR), 1H NMR, thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The performance of the prepared copolymers as plasticizers for neat nitrocellulose resin were studied in different formulations, namely, R1, R2, R3, R4 and R5 containing copolymers (PEA-b-PEG1), (PEA-b-PEG2), (PEA-b-PEG3), (PEA-b-PEG4) and (PEA-b-PEG5), respectively. In addition to formula R0 that contains acetyl tributyl citrate (ATBC) as a commercial plasticizer. The mechanical properties, thermal analysis (DSC, TGA) and optical properties of the prepared formulations films were investigated. Theses amphiphilic block copolymers were then applied as plasticizers in different rotogravure ink formulations (F1, F2, F3, F4 and F5) and compared with commercial rotogravure ink formula (F0). The color measurements and optical properties of all formulations were achieved.
Findings
It was found that the performance of the prepared copolymers as plasticizers in different formulations based on nitro cellulose resin gives better gloss, adhesion for R1 compared with the other samples and color strength for F1 compared with F0. Finally, all the samples gave excellent plasticizing effect.
Research limitations/implications
The authors believe that type of these materials open the way for a new class of plasticizers that upon application or even degradation gives small ecofriendly molecules (adipic acid and or ethylene glycol moieties) taking into consideration the simplicity of the rout of the synthesis process.
Practical implications
The prepared ecofriendly (PEA-b-PEG)s could be successfully used as plasticizers instead of commercial plasticizer ATBC.
Originality/value
The research provides that the prepared (PEA-b-PEG)s with different molecular weights can act as plasticizers in rotogravure ink formulations, and their performance was acceptable and available.
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An examination of the research literature suggests that no attempt has been made to examine learner autonomy development within female university-level English as a Foreign…
Abstract
Purpose
An examination of the research literature suggests that no attempt has been made to examine learner autonomy development within female university-level English as a Foreign Language (EFL) students in the Kingdom of Saudi Arabia. Given that English has become the world’s predominant lingua franca for academia, business, and politics, the purpose of this paper, therefore, is to fill this gap in the literature.
Design/methodology/approach
This is a qualitative case study that aims to explore learner autonomy in vocabulary development.
Findings
The results showed that teachers are cognizant of the concept of learner autonomy. However, they are not all certain of the benefits of autonomous vocabulary learning. This study reveals how six adult learners’ levels of autonomy are highly influenced by their teachers’ practices. This study draws out suggestions for English language teachers who promote learner autonomy theory and practice. It also offers specific guidance, models, and adapted learning approaches of how to promote autonomy inside the classroom.
Research limitations/implications
This study encountered several limitations. The first is time: the study took place over the course of two months in the Summer of 2016, when students were fully encumbered with schoolwork and social duties. The recruitment of participants during that time was a challenge. Some of the students who agreed to participate in the study were not fully engaged in the research. Additionally, the study faced difficulties with faculty commitment – one of the professors delayed the interview session multiple times and perceived some of the interview questions negatively. In addition, Dickinson’s (1993) characteristics of learner autonomy are largely related to the opportunities that are presented to the students by the teacher. It appears that Dickinson’s scale was meant to be used to identify students’ level of autonomy, particularly inside the classroom. However, because of some of the examples of activities pertaining to how they learned vocabulary outside the classroom, they were not related to classroom teaching. Also, the number of the participants is limited in this study.
Practical implications
A future study could be undertaken to measure and quantitatively analyze learners’ vocabulary development on a larger scale. Research could also be conducted using a pretest, an intervention, and a posttest to measure the effectiveness of learning vocabulary autonomously. In addition, other pedagogical approaches could be utilized to measure EFL students’ intrinsic motivation and autonomy, which play critical roles in learning. Allowing learners to self-select their preferred method of learning can help them to develop their vocabulary knowledge. The findings from this study reveal that learner autonomy plays a significant role in enhancing EFL students’ vocabulary development.
Originality/value
When students learn vocabulary autonomously, they are better able to source the lingua franca’s core pronunciation of a word and its spelling without the influence of the teacher’s cultural background. Given the magnitude of teachers’ workloads, they may lack the time for designing lessons that adequately meet the needs of diverse learners. Therefore, the practical way to ameliorate the problem of inadequate time is to provide them with methods (e.g. using strategies such as inquiry-based learning, problem-based learning, and project-based learning) that they can use to more readily foster learner autonomy.
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Rana Muhammad Ayyub, Saira Naeem, Shehzad Ahmed and Chanaka Jayawardhena
The main purpose of this paper is to study the changing consumer behavior toward broiler meat and apprise its consequences toward food insecurity.
Abstract
Purpose
The main purpose of this paper is to study the changing consumer behavior toward broiler meat and apprise its consequences toward food insecurity.
Design/methodology/approach
This is a sequential exploratory mixed-method study in which qualitative data were collected through semi-structured interviews (n = 38) by snowball sampling. The quantitative data were collected through a questionnaire survey (n = 975) by convenience sampling. The qualitative data were analyzed through NVivo 10 software by using thematic analysis, i.e. the qualitative content analysis (QCA). The theory of consumer alienation provides the theoretical underpinning for a quantitative study. The established scales were adopted and adapted. The quantitative data was analyzed through AMOS 24 software by using structural equation modeling (SEM).
Findings
It was found that people have many reservations regarding broiler meat. Thus, consumer alienation negatively (ß = −0.10) and the subjective norm positively (ß = 0.82) affects the intention to buy broiler meat.
Research limitations/implications
The ongoing consumer alienation toward broiler will force them to avoid using this cheapest protein and ultimately will lead to food insecurity in developing countries. It is recommended that people must be adequately educated about the real broiler business and its operations to counter their ongoing misperceptions.
Originality/value
It is the original empirical Research Work.
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Shobod Deba Nath, Gabriel Eweje and Suborna Barua
The purpose of this paper is to investigate why multi-tier apparel suppliers integrate social sustainability practices into their supply chains and what barriers these suppliers…
Abstract
Purpose
The purpose of this paper is to investigate why multi-tier apparel suppliers integrate social sustainability practices into their supply chains and what barriers these suppliers encounter while embedding social sustainability practices.
Design/methodology/approach
This study employs a qualitative research design, drawing on data from semi-structured interviews with 46 owners and managers from 33 multi-tier apparel suppliers in Bangladesh, an important outsourcing hub for the global apparel industry. To corroborate research findings, the views of owners and managers were triangulated by further interviewing 11 key representatives of institutional actors such as third-party auditors, a donor agency, industry associations, regulatory agencies and a non-governmental organisation (NGO).
Findings
The authors' findings suggest a range of divergent institutional drivers and barriers – coercive, mimetic and normative – that determine the implementation of multi-tier suppliers' social sustainability practices. The key reported drivers were buyers' requirements, external stakeholders' expectations, top management commitment and competition. Conversely, cost and resource concerns and gaps in the regulatory framework were identified as key social sustainability implementation barriers. In particular, owners and managers of second-tier and third-tier supplier firms experienced more internal barriers such as cost and resource concerns than external barriers such as gaps in values, learning and commitment (i.e. compromise for mutual benefit and non-disclosure of non-compliance) that impeded effective social sustainability implementation.
Research limitations/implications
Social sustainability in supply chain management has received significant attention from academics, business practitioners, governments, NGOs and supranational organisations. However, limited attention has been paid to investigating the drivers and barriers for social sustainability implementation from a developing country's multi-tier supplier perspective. The authors' research has addressed this knowledge gap.
Practical implications
The evidence from the authors' study provides robust support for key assumptions of institutional theory and has useful implications for both managers and policy-makers.
Originality/value
The authors' study contributes to the embryonic research stream of socially sustainable multi-tier supply chain management by connecting it to the application of institutional theory in a challenging institutional context.
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NEPAL: MPs will be main worry for top judge
Students discussing the case will be able to:▪ Evaluate and decide the marketing strategy that will best align the organizational resources and capabilities with the external…
Abstract
Learning outcomes
Students discussing the case will be able to:▪ Evaluate and decide the marketing strategy that will best align the organizational resources and capabilities with the external environment.▪ Demonstrate the process of segmentation and choose the most attractive target market.▪ Analyze the competition and develop an effective positioning strategy.▪ Evaluate and use different growth strategies in business situations.
Case overview/synopsis
The case demonstrated the decision-making process behind the post-pandemic strategy of ShakahariS by Awadhpuri, a restaurant in the emerging Indian market. The restaurant was situated in Ahmedabad, one of the fastest-growing mini-metro cites of the Indian restaurant industry. It was known for authentic Indian vegetarian cuisine. The restaurant, originally named Awadhpuri, was started in 2012 by Ms. Vandana Singh. It was positioned as a non-vegetarian restaurant providing Awadhi cuisine in the fine-dining segment known for its ambiance and authentic taste. However, due to the predominant vegetarian market in Ahmedabad city, the restaurant was rebranded and repositioned as ShakahariS by Awadhpuri, serving only vegetarian cuisine in 2018. The years 2019–2020 were very harsh due to the Covid-19 crisis. During the uncertain times when the lockdowns and the guidelines kept on changing, it was difficult for the restaurant to even recover their costs. It was a good time to explore the possibilities of the cloud kitchen format, and they came up with multiple kitchens offering different cuisines and targeted new customer segments. The case highlighted these survival strategies adopted by the restaurant during Covid. Post-pandemic, the protagonist was now contemplating a long-term growth strategy for the restaurant to target a new market with a new offering. The dilemma for the restaurant is whether (or not) to align the marketing strategy by repositioning again to cater to the new target segment.
Complexity academic level
Undergraduate courses on Business Management (BBA) and specific topics in introductory courses on marketing management and strategic management of the post-management programs.
Supplementary materials
Teaching notes are available for educators only.
Subject code
CSS 8: Marketing.