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1 – 10 of over 1000Eduardo Antunes and Frederico Fonseca
Digital technologies have impacted our culture by expanding into every interstice of everyday life. Mobile gadgets for communications, work and leisure, social media, apps and…
Abstract
Digital technologies have impacted our culture by expanding into every interstice of everyday life. Mobile gadgets for communications, work and leisure, social media, apps and platforms – the diverse array of items that we usually refer to as digital media and that keep people permanently connected – are at the core of a wider change that goes beyond the use of technology. These technologies provide the material structure for the complex and constant fluxes of information that permeate people's lives, originating new dynamics that impact people's relations, beliefs, practices, representations and identities, bodies or creative and political expressions. Understanding technology as a producer of meanings, subjectivities and agency that are shaped by power relations is central to the MyGender project. Hence, technology is not seen as neutral but as a place of political power. This chapter places young adults at the centre of the changing environment as main cultural and media producers and traces their practices, discourses and representations. By integrating diverse theoretical and empirical contributions that focus on the most relevant aspects of this changing environment, analysing significances, practices and negotiations related to digital cultures and young adults, this chapter proposes a narrative critical literature review that aims to provide a solid framework for the remaining chapters, within the theoretical horizon of the MyGender project.
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Youyang Ren, Yuhong Wang, Lin Xia, Wei Liu and Ran Tao
Forecasting outpatient volume during a significant security crisis can provide reasonable decision-making references for hospital managers to prevent sudden outbreaks and dispatch…
Abstract
Purpose
Forecasting outpatient volume during a significant security crisis can provide reasonable decision-making references for hospital managers to prevent sudden outbreaks and dispatch medical resources on time. Based on the background of standard hospital operation and Coronavirus disease (COVID-19) periods, this paper constructs a hybrid grey model to forecast the outpatient volume to provide foresight decision support for hospital decision-makers.
Design/methodology/approach
This paper proposes an improved hybrid grey model for two stages. In the non-COVID-19 stage, the Aquila Optimizer (AO) is selected to optimize the modeling parameters. Fourier correction is applied to revise the stochastic disturbance. In the COVID-19 stage, this model adds the COVID-19 impact factor to improve the grey model forecasting results based on the dummy variables. The cycle of the dummy variables modifies the COVID-19 factor.
Findings
This paper tests the hybrid grey model on a large Chinese hospital in Jiangsu. The fitting MAPE is 2.48%, and the RMSE is 16463.69 in the training group. The test MAPE is 1.91%, and the RMSE is 9354.93 in the test group. The results of both groups are better than those of the comparative models.
Originality/value
The two-stage hybrid grey model can solve traditional hospitals' seasonal outpatient volume forecasting and provide future policy formulation references for sudden large-scale epidemics.
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Ana Marta M. Flores, Inês Amaral and Rita Basílio de Simões
The influence of digital media and mobile technologies on the interpersonal dynamics of young individuals across various aspects of their daily lives underscores the significant…
Abstract
The influence of digital media and mobile technologies on the interpersonal dynamics of young individuals across various aspects of their daily lives underscores the significant role of digital media in shaping their experiences. Research exploring how individuals engage with mobile applications (m-apps) has revealed the constraining effects of platform norms and politics on users' expressive identities. This chapter examines the evolving landscape of media consumption, engagement and civic participation amidst the proliferation of new media modalities, focussing on m-apps. The authors highlight the pervasive adoption of mobile apps across diverse categories and the escalating temporal investment individuals allocate to these platforms for fostering interpersonal connections. Drawing from a feminist and intersectional perspective, the authors explore how young adults navigate the technicity and imaginaries of m-apps, incorporating them into their daily routines and (re)negotiating their gender and sexual identities. Through the MyGender project, the authors investigate the relationship between m-apps and power dynamics, examining the construction and reconstruction of gender and sexuality across platforms. The findings underscore the need for critical engagement with digital technologies as sociocultural products actively reshaping gender relations and sexual practices. The text ends with an overview of the book, briefly presenting the remaining nine chapters.
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Julian N. Marewski, Konstantinos V. Katsikopoulos and Simone Guercini
Are there smart ways to find heuristics? What are the common principles behind heuristics? We propose an integrative definition of heuristics, based on insights that apply to all…
Abstract
Purpose
Are there smart ways to find heuristics? What are the common principles behind heuristics? We propose an integrative definition of heuristics, based on insights that apply to all heuristics, and put forward meta-heuristics for discovering heuristics.
Design/methodology/approach
We employ Herbert Simon’s metaphor that human behavior is shaped by the scissors of the mind and its environment. We present heuristics from different domains and multiple sources, including scholarly literature, practitioner-reports and ancient texts.
Findings
Heuristics are simple, actionable principles for behavior that can take different forms, including that of computational algorithms and qualitative rules-of-thumb, cast into proverbs or folk-wisdom. We introduce heuristics for tasks ranging from management to writing and warfare. We report 13 meta-heuristics for discovering new heuristics and identify four principles behind them and all other heuristics: Those principles concern the (1) plurality, (2) correspondence, (3) connectedness of heuristics and environments and (4) the interdisciplinary nature of the scissors’ blades with respect to research fields and methodology.
Originality/value
We take a fresh look at Simon’s scissors-metaphor and employ it to derive an integrative perspective that includes a study of meta-heuristics.
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Abdulrahman Adel A. Fridan and Bassem E. Maamari
The purpose of this study is to evaluate the effect of both positive and negative corporate cultures on employee performance in Saudi Arabia, in the presence of performance…
Abstract
Purpose
The purpose of this study is to evaluate the effect of both positive and negative corporate cultures on employee performance in Saudi Arabia, in the presence of performance reviews and factors leading to positive work culture, in an environment that underwent serious modification with COVID-19. The changing work methods (online, remote, etc.) have left their mark necessitating revisiting the needs and capabilities of employees in the work environment.
Design/methodology/approach
This quantitative study uses primary data from small and medium-sized enterprises (SMEs), non-profit organizations, and transnational organizations, in their transient role and influence on organizational culture change. The data set includes 311 usable responses from 50 randomly selected organizations and is analysed using structural equation modelling to test the proposed model.
Findings
A healthy corporate culture serves as the basis for increased employee performance in the workplace. The three independent variables, availability of negative culture, availability of positive culture and employee perceived performance, have a positive impact on the dependent variable employee perceived effectiveness of performance reviews; however, factors leading to the development of a positive organizational has a negative influence.
Research limitations/implications
This study faced a limitation with the potential similarity of responses due to the large number of same-background respondents (engineers). However, the results are indicative of a trend. Moreover, the responses did not allow for cross comparison between responding organizational types (SMEs, non-governmental organizations and multinational corporations) as was planned.
Practical implications
Managers should motivate their respective employees, through ensuring the diffusion and sustainability of the right culture work environment. This should allow their teams to complete tasks with little or no supervision. Moreover, as the Saudi economy is gearing up for global competitiveness, this performance culture becomes a key for the success of the strategic plans, thus the high importance of the positive culture at work today.
Social implications
Understanding the importance of positive and negative culture at the managerial level would affect the relationship with employees and improve work environment and job satisfaction.
Originality/value
This study pinpoints the need to revisit a dimming topic, proving that with the end of the COVID-19 pandemic, managers need to go back to square one. The introduction of the many novel work systems, online, remote work, etc. have changed the work setting and environment. This is requiring a new look at the employees’ perceptions on factors influencing corporate culture and performance.
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Anomitra Chakraborty and Pranitha Janapatla
In the present article, sensitivity analysis was studied in the presence of the combined effects of thermal radiation, suction and magnetohydrodynamics (MHD) effects on a Nimonic…
Abstract
Purpose
In the present article, sensitivity analysis was studied in the presence of the combined effects of thermal radiation, suction and magnetohydrodynamics (MHD) effects on a Nimonic 80A-Fe3O4/water hybrid nanofluid across moving a wedge with variable surface temperature and buoyancy effects.
Design/methodology/approach
The governing equations were transformed using similarity transformations and solved using MATLAB bvp4c code and response surface methodology (RSM), with quadratic face-centred central composite design being implemented. All results and graphs were formulated after positive outcomes of our results with existing literature.
Findings
An increase in magnetic parameter (M) and velocity ratio parameter (R) resulted in an increase in velocity profiles and local Nusselt number, while a reverse trend was observed for temperature profiles. With radiation parameter Rd = 0.8, the local Nusselt number increased by 4.08% as the velocity ratio parameter increased from R = 0.0 to R = 0.5. The Nusselt number was found to be most sensitive to R, while the latter produced negative sensitivity on skin friction coefficient. The skin friction coefficient for the hybrid nanofluid model increased by 35.39% compared to the regular fluid model, with a very low standard deviation value of 10−4. The Model F-value for Nusselt number model was found to be 939278.49 with a noise ratio of 3618.711. Skin friction coefficient was found to be most sensitive with respect to changes in the parametric values of M.
Research limitations/implications
Nimonic 80A being a super-alloy of nickel-iron-chromium and built in high frequency melting, it can work up to 1500°F and is extensively used in automobile exhaust valves.
Practical implications
The present study finds numerous applications in biotoxicity studies, medical industries, water heaters and the forging of hot exhaust valve heads.
Originality/value
In view of various applications of our present study, there remains a gap in examining the sensitivity analysis of a hybrid nanofluid flow model across a moving permeable wedge using the Tiwari–Das model, which required clinical investigations numerically and statistically.
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Abhirupa Das and Uday Bhanu Sinha
The effectiveness of microfinance institutions (MFIs) in rescuing poor borrowers from “clutches of” moneylenders has been a much-debated topic over the past few decades. This…
Abstract
Purpose
The effectiveness of microfinance institutions (MFIs) in rescuing poor borrowers from “clutches of” moneylenders has been a much-debated topic over the past few decades. This paper aims to contribute by presenting a model of competition between a socially motivated MFI and profit-maximizing moneylenders when market segmentation exists.
Design/methodology/approach
A principal–agent model is used to characterize equilibrium conditions under scenarios where only moneylenders operate, only MFI operates and when both co-exist to pose comparative results effectively.
Findings
The authors find unambiguous benefits arising when a welfare-maximizing MFI enters the market. However, there are benefits to having local agents like moneylenders on the ground who also have informational advantages.
Originality/value
To the best of authors’ knowledge, this study is the first to evaluate the competition between MFI and moneylenders under the framework of captive and noncaptive segments with a mandatory savings requirement.
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Mohanaphriya US and Tanmoy Chakraborty
This research focuses on the controlling irreversibilities in a radiative, chemically reactive electromagnetohydrodynamics (EMHD) flow of a nanofluid toward a stagnation point…
Abstract
Purpose
This research focuses on the controlling irreversibilities in a radiative, chemically reactive electromagnetohydrodynamics (EMHD) flow of a nanofluid toward a stagnation point. Key considerations include the presence of Ohmic dissipation, linear thermal radiation, second-order chemical reaction with the multiple slips. With these factors, this study aims to provide insights for practical applications where thermal management and energy efficiency are paramount.
Design/methodology/approach
Lie group transformation is used to revert the leading partial differential equations into nonlinear ODE form. Hence, the solutions are attained analytically through differential transformation method-Padé and numerically using the Runge–Kutta–Fehlberg method with shooting procedure, to ensure the precise and reliable determination of the solution. This dual approach highlights the robustness and versatility of the methods.
Findings
The system’s entropy generation is enhanced by incrementing the magnetic field parameter (M), while the electric field (E) and velocity slip parameters (ξ) control its growth. Mass transportation irreversibility and the Bejan number (Be) are significantly increased by the chemical reaction rate (Cr). In addition, there is a boost in the rate of heat transportation by 3.66% while 0.05⩽ξ⩽0.2; meanwhile for 0.2⩽ξ⩽1.1, the rate of mass transportation gets enhanced by 12.87%.
Originality/value
This paper presents a novel approach to analyzing the entropy optimization in a radiative, chemically reactive EMHD nanofluid flow near a stagnation point. Moreover, this research represents a significant advancement in the application of analytical techniques, complemented by numerical approaches to study boundary layer equations.
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Patricia Ahmed, Rebecca Jean Emigh and Dylan Riley
A “state-driven” approach suggests that colonists use census categories to rule. However, a “society-driven” approach suggests that this state-driven perspective confers too much…
Abstract
A “state-driven” approach suggests that colonists use census categories to rule. However, a “society-driven” approach suggests that this state-driven perspective confers too much power upon states. A third approach views census-taking and official categorization as a product of state–society interaction that depends upon: (a) the population's lay categories, (b) information intellectuals' ability to take up and transform these lay categories, and (c) the balance of power between social and state actors. We evaluate the above positions by analyzing official records, key texts, travelogues, and statistical memoirs from three key periods in India: Indus Valley civilization through classical Gupta rule (ca. 3300 BCE–700 CE), the “medieval” period (ca. 700–1700 CE), and East India Company (EIC) rule (1757–1857 CE), using historical narrative. We show that information gathering early in the first period was society driven; however, over time, a strong interactive pattern emerged. Scribes (information intellectuals) increased their social status and power (thus, shifting the balance of power) by drawing on caste categories (lay categories) and incorporating them into official information gathering. This intensification of interactive information gathering allowed the Mughals, the EIC, and finally British direct rule officials to collect large quantities of information. Our evidence thus suggests that the intensification of state–society interactions over time laid the groundwork for the success of the direct rule British censuses. It also suggests that any transformative effect of these censuses lay in this interactive pattern, not in the strength of the British colonial state.
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Sarayut Rueangsuwan and Supavinee Jevasuwan
The main purpose of this study is to examine the determinants of firms’ earnings management (EM) activities during natural disasters, specifically the 2011 floods in Thailand. The…
Abstract
Purpose
The main purpose of this study is to examine the determinants of firms’ earnings management (EM) activities during natural disasters, specifically the 2011 floods in Thailand. The motivation for conducting this study is that although disasters stem from natural processes, such events affect firms’ actions, resulting in adverse economic and social outcomes.
Design/methodology/approach
Based on data from listed companies in Thailand and using a sample of 5,786 firm-year observations from 2008 to 2013, this study uses the differences-in-differences method to estimate the relation between earnings quality (EQ) and floods. Additionally, this study uses the same research design to observe how fast firms engage in EM, as reflected by the trends in EQ following the floods.
Findings
This study finds that firms engage in EM to increase their earnings numbers and misrepresent their performance after experiencing the 2011 floods in Thailand. The evidence is consistent with the hypothesis that natural disasters are related to EQ. In addition, this study finds that firms’ responses are observed only in the year after the floods (2012).
Originality/value
This study contributes to the literature on EM and quality in two ways. First, this study provides new evidence that during crisis situations such as natural disasters, firms strive to signal good news to capital markets, consistent with the market expectation hypothesis. Second, this study shows that natural disasters are as useful and equal as other exogenous shocks such as financial crises for economic research.
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