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This paper aims to critically review the isolation and chemistry of plant pigments.

A literature survey from 1974 to 2022 was carried out and studied thoroughly. The authors reviewed literature in various areas such as isolation methods and catalytic properties of pigments.

With vast growing research in the field of catalytic activities of various pigments like chlorophyll, anthocyanin and flavonoids, there is still scope for further research for the pigments such as Lycopene, carotenoids and xanthophyll as there has not been any significant work in this area.

Plant pigments may be used as an ecofriendly catalyst for chemical reactions.

One can get the direction of pigment research.

Plant pigments are natural and ecofriendly catalyst which can reduce the pollution.

This is an original work. This paper precisely depicts the advantages as well as disadvantages of the isolation techniques of pigments. This study also presents the chemistry of plant pigments.

Overtourism is an emerging concept and a perennial process every destination is going through. It is a cyclic phenomenon derived from the destination, retained in the destination and at last demised by the destination. It's a kind of ‘tourism illness’ spreading rapidly in every destination in the present scenario. The status of overtourism in every destination has been caused by the tourist, of the tourist and for the tourist. In the context of religious places in Odisha, overtourism is a ‘disorder’ that cannot be mitigated, as religiosity, faith and spiritualism have propelled and governed people's sentiment and emotion. Hence ambiguity arises out of making an intrigue situation between a myth or a spiritual sojourn bounded by faith and belief. This chapter significantly contributes by unfolding the existing literature by providing the origin and evolution of overtourism, various stated definitions by the different authors, causes and consequences, and overtourism in religious destinations by adopting an exploratory study, particularly in case of the Golden triangle of Odisha.

This paper aims to evaluate the “Janus-faced” character and causes of overtourism to propose recommendations to tackle such a phenomenon.

A case study analysis approach is adopted for this study. Studies of practitioners are presented and reflected upon with reference to academic literature on overtourism.

The study presents practical examples from Haiti, Nicaragua and Zanzibar. Tourism practitioners’ studies on overtourism are presented and general recommendations on tackling overtourism are proposed.

This study will be of interest to tourism practitioners and Destination Marketing Organisations (DMOs) worldwide who seek understanding of the overtourism phenomenon and the associated negative impacts. The study provides useful recommendations that can be used in similar situations of overtourism.

The paper extends understanding of overtourism causes and consequences. While overtourism is generally looked at from impact studies, this paper argues the urgent need for solutions to tackle the phenomenon.

The purpose of this paper is to measure the intellectual capital performance of Indian banks and established a relationship between intellectual capital and return on assets (ROA). The paper also compared the intellectual capital performance of public sector and private sector banks.

This study is based on secondary data from the top 20 Indian banks. Ten banks were selected from each of the public and private sectors on the basis of paid-up equity capital. The analysis was made using the value added intellectual coefficient, the coefficient of variation, exponential growth rates, trend analysis, Yule’s coefficient, the coefficient of correlation, the F-test and the t-test.

The study revealed that private sectors have performed relatively better regarding the creation of total information coefficient (IC). However, the ROA was still below the international benchmark of > 1 percent. The major cause of the lower IC and the reduced ROA is disproportionate to the increase in capital employed and escalating non-performing assets in the Indian banking sector.

The study focussed on managers and identified the causes of lower performance. It proposed numerous strategies to improve the aggregate score of IC, which is closely related to bank profitability.

This is the first study to make a comparative analysis of intellectual capital performance in public and private sector banks in India and in addition to the traditional style of measuring sectoral performance. Further, the study employed new statistical tools, such as Yule’s coefficient of association, to establish the association between performance variables.

Reports briefly on the Technical Sessions and other presentations of the 43rd All‐India Conference of the Indian Library Association, and mentions the recommendations made by delegates at the conclusion of the conference.

Different pollutants emission due to the conventional energy consumption process is of major concern owed to its significant effect on human health vis-à-vis regional climate. The purpose of this paper is to develop mitigation strategies to reduce the pollutant concentrations in the rural households conducted in a pristine rural village of Indian Sunderban area.

During winter, 2014, 20 households which were using traditional biomass cookstove for cooking and kerosene-lamp for lighting (KIT-TRD) were randomly selected. Specific type of improved forced draft biomass cookstove and solar lantern were used in ten of the selected households (KIT-IMP). Real time concentrations of particulate matter (PM) (PM_2.5, PM₁₀) and carbon monoxide (CO) during day and evening time cooking period were measured in KIT-IMP and KIT-TRD. A simulation model was established to evaluate most potential factor to control the level of pollutants inside the kitchen.

Conventional processes of energy consumption in the households, along with the outdoor concentration of pollutants influence the indoor concentration of measured pollutants. The concentration of PM and CO was significantly lower in the KIT-IMP than the other. In the KIT-TRD households, the daytime concentration of PM and CO was significantly higher compared to the evening. The simulated output overestimated the concentration of PM10 and CO in the KIT-TRD.

The concentration of PM_2.5, PM₁₀ and CO significantly reduces in the indoor environment with the introduction of improved cookstove and solar lantern; however, further research is required to develop optimum sizes of window and door in the rural households to reduce the concentrations of different pollutants inside the kitchen.

The paper aims to investigate the effect of firm age and size on profitability and productivity of construction firms in India. It also attempts to understand the indirect effect of firm age and size on profitability mediated through firm's productivity.

Data of 64 construction firms, for a period of 12 years (2006–2017), were collected. In order to measure the direct and indirect effect of size and age on profitability and productivity, a structural equation model was developed. In the structural models, productivity is a latent variable measured through proxies of material productivity (MP), labor productivity (LP) and equipment productivity (EP). The profitability is measured using three financial ratios: return on asset (ROA), return on capital employed (ROCE) and return on net worth (RONW). Then the direct and indirect effect of age and size is measured on ROA, ROCE, RONW and productivity.

The findings of the study suggest that age has a direct negative effect on profitability; however, it has an indirect positive effect on profitability, which is mediated by firm's productivity. This positive indirect effect compensates the direct negative effect and leads to an overall positive effect of firm age on profitability. However, firm size shows no effect on profitability and productivity.

To the best of authors’ knowledge, the study is the first attempt to measure the indirect effect of age and size on profitability, mediated through productivity. The study also examines the interrelationship among firms’ profitability and productivity and bridges an important research gap. The study proposes an integrated theoretical framework with a clear view of the interrelationships among age, size, profitability and productivity for construction firms in India, which can be further tested and validated for generalization.

The purpose of this study is to evaluate the 3D printability of a multimaterial, fully self-supporting auxetic structure. This will contribute to expanding the application of additive manufacturing (AM) to new products, such as automotive suspensions.

An experimental approach for sample fabrication on a multiextruder 3D printer and characterization by compression testing was conducted along with numerical simulations, which were used to support the design of different auxetic configurations for the jounce bumper.

The effect of stacking different auxetic cell modules was discussed, and the findings demonstrated that a one-piece printed structure has a better performance than one composed of multiple single modules stacked on top of each other.

The quality of the 3D printing process affected the performance of the final components and reproducibility of the results. Therefore, researchers are encouraged to further study component fabrication optimization to achieve a more reliable process.

This research work can help improve the manufacturing and functionality of a critical element of automotive suspension systems, such as the jounce bumper, which can efficiently reduce noise, vibration and harshness by absorbing impact energy.

In previous research, auxetic structures for the application of jounce bumpers have already been suggested. However, to the best of the authors’ knowledge, in this work, an AM approach was used for the first time to fabricate multimaterial auxetic structures, not only by co-printing a flexible thermoplastic polymer with a stiffer one but also by continuously extruding multilevel structures of auxetic cell modules.

This case study is designed to enable students to formulate the strategic planning process in relation to an organization’s resources; assess the critical tasks required for the company’s business planning for growth and market expansion; and examine the importance of the value delivery process for the company, its customer and its employees. At the end of the case discussion, students will learn how to plan their business in an emerging market by using their existing resources, where the business stands at present and where it may go in the coming future.

The case study discusses how Byju’s, an Indian multinational educational technology company, revolutionized student learning programs through its innovative strategic implementation. It explores the company’s growth and expansion strategy by considering a strength, weakness, opportunity and threats analysis. It elaborates on how Byju’s acquired various companies in India and other countries to become an international technology-based educational brand with 150 million users in 2022. The case study also highlights the marketing and promotional strategy used by the company on online and offline platforms. The case study elaborates on the value delivery process and its importance for customer and employee satisfaction. Despite its success in the Indian market, Byju’s faced tough challenges in the US and European markets, such as lower-than-expected growth rates and lower subscription numbers, even though it followed the same strategy as in the Indian market. The acquisition and celebrity strategy works in emerging economies such as India but not in developed countries. The company’s return on investment was down owing to the high costs it had incurred over the years on market acquisitions and marketing promotions. The growing competition was also expected to bring more challenges for Byju’s. New players such as Tata Studi and YouTube planned to enter the market. Byju Raveendran and his management group had to decide whether to maintain or change the current market offering to reflect market developments to satisfy their customers and employees. They also had to determine whether the main components of the marketing strategy, such as the company’s ongoing value delivery process and ongoing strategy toward the target audience, partners and rivals, are advantageous to the firm or not. The team was in dilemma whether the marketing planning process was going in the right direction and how to make all elements of its businesses more efficient in dealing with the issues. Raveendran kept asking questions about to what extent it is still possible to alter the marketing plan.

The case study is appropriate for discussion in courses such as marketing management, service marketing and strategic marketing management, whether they are part of an undergraduate program (Bachelor of Business Administration [BBA]), a postgraduate program in business management (Master of Business Administration [MBA]) or an executive-level program (executive MBA). The breadth of business topics addressed and the intricacy of the scenario make this case study best suited to be used after the semester as either a culminating project or as a seminar discussion for undergraduates (BBA). The case study can also be discussed in the marketing management course (graduation level) under the marketing and service strategy chapters.

CSS8: Marketing

Teaching notes are available for educators only.

Selfie is a popular self-expression platform to visually communicate and represent individual thoughts, beliefs, and creativity. However, not much has been investigated about selifie's pedagogical impact when used as an educational tool. Therefore, the authors seek to explore students' perceptions, emotions, and behaviour of using selfies for a classroom activity.

A triangulated qualitative approach using thematic, sentiment, and selfie visual analysis was used to investigate selfie perception, behaviour and creativity on 203 undergraduates. Sentiment analyses (SAs) were conducted using Azure Machine Learning and International Business Machines (IBM) Tone Analyzer (TA) to validate the thematic analysis outcomes, whilst the visual analysis reflected cues of behaviour and creativity portrayed.

Respondents indicated positive experiences and reflected selfies as an engaging, effortless, and practical activity that improves classroom dynamics. Emotions such as joy with analytical and confident tones were observed in their responses, further validating these outcomes. Subsequently, the visual cue analysis indicated overall positive emotions reflecting openness towards the experience, yet also reflected gender-based clique tendency with modest use of popular selfie gestures such as the “peace sign” and “chin shelf”. Furthermore, respondents also preferred to mainly manipulate text colours, frames, and colour blocks as a form of creative output.

The study's findings contribute to the limited studies of using selfies for teaching and learning by offering insights using thematic analysis, SA and visual cue analysis to reflect perception, emotions, and behaviour.

The peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-11-2021-0608/