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This paper aims to study and assess residual strengths of concrete specimen exposed to elevated temperatures by core recovery tests.

The appraisal of concrete structures is typically carried out by means of partially destructive tests such as tests on concrete cores taken from the structure and non-destructive testing.

This paper presents results associated with determination of residual compressive strengths of plain and reinforced concrete elements exposed to elevated temperatures by core recovery test. Physical observations and results of compressive strengths of cores extracted from plain cement concrete, as well as from reinforced concrete beam elements exposed to elevated temperatures, have been presented.

The empirical relations have been proposed between standard cube and core extracted for compressive strength of concretes exposed to elevated temperatures are useful for damage diagnosis.

After completion of the case study, students will be able to analyse the path of the entrepreneurship from idea generation to market development to scaling up business, examine the impact of start-ups like Ergos on India’s agriculture value chain, discuss the challenges faced by tech entrepreneurs in growing a business, identify problems solved by Grain Bank Model and evaluate digitisation of farming’s custodial services such as warehousing, market linkages and loans.

The case study discusses how founders of Ergos, India-based leading digital AgriTech start-up, Kishor Kumar Jha and Praveen Kumar, started one of the unique models in the AgriTech landscape in India. After noticing the grim condition of small and marginal farmers in Bihar, India. Kishor and Praveen decided to put their banking and corporate experience to use in the farming sector. Ergos aimed to empower farmers by providing them with a choice on when, how much quantity, and at what price they should sell their farm produce, thus maximising their income. As a result, Ergos launched the grain bank model, which provided farmers with doorstep access of end-to-end post-harvest supply chain solutions by leveraging a robust technology platform to ensure seamless service delivery. Ergos faced many challenges in its journey related to financing, marketing and distribution. Amidst these developments, it remained to be seen how Kishor and Praveen would be able to realise their goal to serve over two million farmers across India by 2025 and create a sustainable income for them through its GrainBank Platform.

This case study was written for use in teaching graduate and postgraduate management courses in entrepreneurship and business strategy.

Teaching notes are available for educators only.

CSS 3: Entrepreneurship

Concrete is found to undergo degradation when subjected to elevated temperatures during an accidental event, such as fire and lose substantial amount of its original strength. The loss of strength in concrete is mainly attributed to the decomposition of Calcium Silicate Hydrate (C-S-H) and release of chemically bound water, which begins when the exposure temperature exceeds 500°C. When such a concrete is supplied with water and allowed to recure, it is found to recover substantial amount of its lost strength. This work is carried out to investigate the effect of recuring on strength recovery of un-blended and blended concrete specimen (100 mm cubes) subjected to elevated temperatures from 400°C to 700°C, in steps of 100°C, for a retention period of two hours at the designated temperatures. The concrete cubes immediately after exposure were subjected to thermal shock by quenching them in water, and then temperature of thermally shocked concrete is allowed to cool to room temperature. The cooled specimen were then recured in water for 1, 3, 7, 14, 21, 28, 56 days and tested for compressive strength recovery. These studies were carried out for Portland Cement (PC) based concrete and Portland & Granulated Blast Furnace Slag (70% PC + 30% GGBS) based concrete (blended concrete), and some interesting results are presented and discussed in this paper.

Concrete in structures is likely to be exposed to high temperatures during fire. The probability of its exposure to elevated temperatures is high due to natural hazards, accidents and sabotages. Therefore, the performance of concrete during and after exposure to elevated temperature is a subject of great importance and interest to the designer. Popular normal strength grades of concrete produced by Ready Mix Concrete (RMC) India, Mangalore have been used in production of test specimens (150 mm cubes), cured and tested by destructive method for gathering data on strength characteristics. Later, these test samples were subjected to elevated temperatures ranging from 100°C to 800°C, in steps of 100°C with a retention period of 2 hours. After exposure, weight losses and the residual compressive strength retention characteristics are studied. Test results indicated that weight and strength significantly reduces with an increase in temperature. Residual compressive strength prediction equations are proposed for normal strength concretes subjected to elevated temperatures.

The paper aims to find out how far the size of household landholding directs patriarchal traits and thus influence women's autonomy.

The study used a two-part methodology. The first part provides theoretical background based on existing literature on women's autonomy and related information in formulating the “landholding-patriarchy hypotheses”. The second part of this study evaluates the empirical evidences of the association between the size of household landholding and women's autonomy.

Results indicate considerable variation in women's autonomy with the size of their household landholding: women's autonomy decreases with increasing size of household landholding. Evidence suggests that landholding directs patriarchal traits, as manifested in a reasonable influence on women's autonomy in rural India.

The paper innovates a means to understand the contributing factors to lowering women's autonomy, thus explore the relevance of “landholding-patriarchy hypothesis”.

In spite of the growing evidence of intimate partner violence (IPV) against men, limited scholarly work exists on this topic. To date, few studies have explored the motivations and socio-cultural underpinnings of violence against men in Kenya and sub-Saharan Africa in general. Using the Kenya Demographic and Health Survey and employing logit models, we examined associations between women's controlling behaviours and IPV among 3,262 Kenyan men aged 15–54 years. Over 60% of the Kenyan men surveyed reported their female partners were controlling. Compared with those who did not, men who reported controlling behaviours were significantly more likely to have experienced three types of violence (physical, sexual and emotional). Educated Kenyan men had higher odds of experiencing physical and emotional violence than the uneducated, and they reported higher levels of control by their female partners. Our findings suggest that IPV against men may be goal-oriented, but there is also evidence that it may be a reaction to male-perpetrated abuse.

Urban tourism in megacities is a rather recent research topic. There is a dearth of literature on urban tourism in Indian megacities, especially Mumbai. Though much research has looked into slum tourism activities, other urban tourism aspects have been kept aside. The chapter aims to present a different perspective of leisure tourism in Mumbai. After introducing some contextual background information on the city, the chapter examines critically official tourism communication and policies by tackling the spatiality of tourism and the geographical clusters in the city. It attempts to understand the consumption patterns of various tourists' groups and looks into recent tourism developments.

This study aims to evaluate the impact of the COVID-19 pandemic on technology adoption, innovation and business relationships among small and mid-sized enterprises (SMEs) in Ghana. Specifically, it examines how technical know-how and innovative sustainable marketing strategies mediate and moderate these relationships, offering insights into the broader dynamics of digital transformation and sustainability in emerging markets.

The study surveyed management and employees from SMEs in Ghana’s financial sector. A Partial Least Squares Structural Equation Modeling approach was used to test the constructs’ reliability and validity and evaluate the hypothesized relationships with 357 completed questionnaires out of 452 total responses gathered.

The results indicate that post-pandemic, challenges in maintaining business relationships and the lack of technical know-how have driven the increased adoption of technology and innovative sustainable marketing strategies. These factors have also contributed to improved hygienic practices among SMEs. The study concludes that these changes are crucial for accelerating digitalization and ensuring long-term sustainability for SMEs in developing countries, especially in the wake of pandemic disruptions.

This study provides a novel contribution by exploring the intersection of emerging technologies such as mobile applications and blockchain within the context of pandemic-induced digital transformation. The findings emphasize the importance of these technologies in shaping the future growth and sustainability of businesses. Additionally, the paper highlights both the limitations of the current study and proposes future research directions to further advance the understanding of digital transformation in emerging markets.

The purpose of this study is to identify Offshore Wind Energy (OWE) as a key technology that could drive countries toward achieving climate goals. However, there are multiple challenges that this sector faces.

This study aims to identify the challenges faced by the sector globally by systematically reviewing the existing literature in global context and portraying it in the Indian context. Factors are identified using content analysis.

Results suggest high levelized cost of energy as the most discussed challenge for the growth of OWE. Insufficient financial support and policy, initial capital and inadequate technology formed the second, third and fourth most discussed challenges respectively.

To reduce the cost of OWE, the distribution companies in India could adopt feed-in tariffs (FiTs) in the early stages of development and make OWE procurement mandatory. The renewable purchase obligation (RPO) in India is specific to solar and non-solar; policy should accommodate offshore wind-specific RPO targets for each state to reach the 2030 target of 30 GW from OWE.

To the best of the authors’ knowledge, this is the first attempt to study the challenges of OWE development from a global perspective and portray these major challenges in the Indian context and uses content analysis from the existing literature to ascertain the major roadblocks for the development of OWE.

The study identifies the unexplored gap in literature that includes futuristic challenges for OWE from climate change. Future studies can explore the possibilities of forecasting based on climate change scenarios and rank the challenges based on their relevance caused by possible damages.

The purpose of this paper is to investigate if women’s exposure to mass media, i.e. television, radio, and print media, is a determinant of female empowerment in India. Indicators of empowerment include female autonomy in domestic decision-making, freedom of movement, financial knowledge and independence, attitudes regarding acceptability of violence against women, actual and desired fertility and use and decisions about contraception.

Data for the analysis come from two rounds of the National Family and Health Survey, a large-scale nationally representative household survey. First, ordinary least squares estimation is used to obtain the parameter estimates. To overcome endogeneity concerns, instrumental variables estimation is also used.

The results reveal a strong positive effect of exposure to mass media on women’s status in India.

These findings highlight the effectiveness of mass media in influencing women positively.

This paper captures the cumulative effects of three types of media: television, radio and print media. It also takes advantage of the most recent data available together with using instrumental variables estimation to overcome endogeneity concerns.