Browse Items (14421 total)
Sort by:
-
Rheostatic effect of a magnetic field on the onset of chaotic and periodic motions in a five-dimensional magnetoconvective Lorenz system
This paper deals with a weakly nonlinear study of two-dimensional RayleighBard magnetoconvection using a simplified five-dimensional Lorenz model. The governing equations of the system are nondimensionalized and formulated in terms of the stream function and the scalar magnetic potential. A five-modal Fourier truncation scheme is employed and the resulting equations are scaled to obtain a five-dimensional autonomous dynamical system. The Hopf-Rayleigh number, signifying Hopf bifurcation, is numerically evaluated from the analysis of weakly nonlinear stability. Chaotic and periodic motions are depicted by plotting bifurcation diagrams, largest Lyapunov exponent (LLE) diagrams and three-dimensional projections of the phase-space. For a fixed set of parameter values, increasing the strength of the applied magnetic field is found to increase the Hopf-Rayleigh number, thereby delaying the destabilization of the system's equilibrium points. It is shown that while low magnetic field strengths favor the onset of chaotic motion directly from the steady state, stronger magnetic field strengths favor the onset of periodic convection from the steady state prior to the appearance of chaotic motion. We observe here that the applied magnetic field regulates the onset of chaotic and periodic motions in the system and therefore, has a rheostatic control over chaotic and periodic behaviors. 2025 Elsevier Ltd -
Rhetoric as an instrument for manipulation and distortion of truth an analysis of Orwell's 1984
Aristotle, in his Rhetoric, points out that all individuals indulge in rhetoric to demonstrate the truth or righteousness in what one wants to say. Problems arise only when rhetoric is used to appeal to emotions, rather than reason. In the current times, when rhetoric is used by leaders for propaganda, to whip up emotions in terms of nationalism and racism, George Orwell's remark that "political language is designed to make lies sound truthful and murder respectable,"6 sounds relevant. The author examines Orwell's 1984 to demonstrate how rhetoric is a powerful tool in the hands of political leaders that can control the thoughts of individuals, to the extent of reducing them to non-entities. In an era where manufacture of consent is possible, the paper highlights how the quality of rhetoric has vitiated over time and the concern that the abuse of language prevalent in fascist regimes of Hitler and Stalin is slowly creeping into democracies too. A peaceful and harmonious existence is possible only when political leaders engage in responsible rhetoric and are willing to dialogue with dissenting voices. 2017 Journal of Dharma: Dharmaram Journal of Religions and Philosophies (DVK, Bangalore). -
Rhetorics in/of English language education in India: A case of digital natives in higher education programs
The study briefly analyzes the ELT situation in India which is replete with challenges emerging from the lack of engagement with the phenomenon of digitality that further shapes the existing nature of learning and the needs of the learner. After locating the position of English Language in the new education policy of India, the paper discusses the General English (GE) courses offered at undergraduate level at the city of Bangalore in India, thereby shedding light on the existing gaps between policy and practice. It is based on this conjecture that the paper suggests the possibility of introducing rhetorical practices in GE courses at undergraduate levels in various institutions in urban India. In order to substantiate this suggestion, the results of a survey conducted with the learners (N=359) of a GE course based on rhetorics at a Southern Indian university is provided. Empirical data along with a brief reflection on the learners' voices are used in the study to examine the efficacy of the structure, administration and evaluation practices of this new course. The study thus opens up possibilities of initiating a discourse around the mode in which English language education and teaching is envisioned, formulated and implemented in undergraduate programs across urban India. 2020 ELE Publishing. All rights reserved. -
Ricci recurrent almost kenmotsu 3-manifolds
In this paper, we obtain that a Ricci recurrent 3-dimensional almost Kenmotsu manifold with constant scalar curvature satisfying ?? h = 0, h ? 0, is locally isometric to the Riemannian product H2 (?4). 2021, University of Nis. All rights reserved. -
Ricci solitons and certain related metrics on almost co-kaehler manifolds
In the paper, we study a Ricci soliton and a generalized m-quasi-Einstein metric on almost co-Kaehler manifold M satisfying a nullity condition. First, we consider a non-co-Kaehler (?, )-almost co-Kaehler metric as a Ricci soliton and prove that the soliton is expanding with ? = ?2n? and the soliton vector field X leaves the structure tensors ?, ? and ? invariant. This result extends Theorem 5.1 of [32]. We construct an example to show the existence of a Ricci soliton on M. Finally, we prove that if M is a generalized (?, )-almost co-Kaehler manifold of dimension higher than 3 such that h ? 0, then the metric of M can not be a generalized m-quasi-Einstein metric, and this recovers the recent result of Wang [37, Theorem 4.1] as a special case. Devaraja Mallesha Naik, V. Venkatesha, and H. Aruna Kumara, 2020. -
Ricci solitons on Riemannian manifolds admitting certain vector field
In this paper, we initiate the study of impact of the existence of a unit vector ?, called a concurrent-recurrent vector field, on the geometry of a Riemannian manifold. Some examples of these vector fields are provided on Riemannian manifolds, and basic geometric properties of these vector fields are derived. Next, we characterize Ricci solitons on 3-dimensional Riemannian manifolds and gradient Ricci almost solitons on a Riemannian manifold (of dimension n) admitting a concurrent-recurrent vector field. In particular, it is proved that the Riemannian 3-manifold equipped with a concurrent-recurrent vector field is of constant negative curvature -?2 when its metric is a Ricci soliton. Further, it has been shown that a Riemannian manifold admitting a concurrent-recurrent vector field, whose metric is a gradient Ricci almost soliton, is Einstein. Universitdegli Studi di Napoli "Federico II" 2021. -
Rice Yield Forecasting in West Bengal Using Hybrid Model
Agriculture in India is the primary source of revenue, yet farmers still face challenges. The primary goal of agricultural development is to produce a high crop yield. The Datasets collected for the study of real-world time series include a blend of linear and nonlinear patterns. A mixture of linear and non - linear models, rather than a single linear or non - linear model, gives a more precise forecasting models for time series data. The ARIMA and ANN prediction models are combined in this paper to create a Hybrid model. This model is used to predict rice yield for all 18 West Bengal districts during the Kharif season, based on 20years of information(20002019) collected from various sources such as India Meteorological Department, Area, and production Statistics, DAV from NASA, etc. The hybrid model aims to enhance efficiency indicators such as MSE, MAE, and MAPE, demonstrating excellent performance for rice yield prediction in all the districts of West Bengal. In the future, it can be applied to other crops that can support farmers in their farming. 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. -
Riding the La Poderosa Politics, Youth, and Motorcycle Diaries in Kerala
[No abstract available] -
Riding the waves of culture: An empirical study on acclimatization of expatriates in IT industry
The forces of globalization and subsequent trade across the borders have necessitated the firms to have their presence across the globe to meet the needs of their customers. The employees or expatriates will be sent on assignment to different countries for a period of time ranging from few weeks, months to years. This sudden exposure to the different environment not only makes these expatriates vulnerable to cultural shocks, but also may significantly affect their job performance. Their failure to acclimatize to the foreign conditions will not only hurt the confidence, career and life of the expatriate, but it will also cost a lot to the company. The present paper aims to understand of the process of expatriate adjustment in the Indian Information Technology (IT) industry by examining demographic variables and few organizational variables of expatriate's adjustment process. A structured questionnaire was distributed to the expatriate employees working in 50 IT companies in the Silicon city, Bengaluru. The study uses Chi-square test and linear regression for testing the hypotheses and found that there is a significant influence of demographic variables like gender, work experience and length of assignment on acclimatization of expatriates to their host country culture. The findings of the study proved that there is a significant relationship between demographic variables and the cultural acceptance of the expatriates. Hence, it is suggested that multinational companies should create an enabling environment within the organizations to make international assignees compatible and comfortable with different cultural values and inculcate cultural acceptance to make them successful in their international assignments. Raghavendra A. N., A. Shivakanth Shetty, 2018. -
RIEMANN SOLITONS ON (?,?)-ALMOST COSYMPLECTIC MANIFOLDS
In this paper, we study almost cosymplectic manifolds with nullity distributions admitting Riemann solitons and gradient almost Riemann solitons. First, we consider Riemann soliton on (?,?)-almost cosymplectic manifold M with ? < 0 and we show that the soliton is expanding with (Formula Presented) and M is locally isometric to the Lie group G?. Finally, we prove the non-existence of gradient almost Riemann soliton on a (?,?)-almost cosymplectic manifold of dimension greater than 3 with ? < 0. 2023 Korean Mathematical Society -
Right to Health vis-vis Climate Change: A Critique From the Lens of Sustainability
The health of the population in a State is one of the preconditions for survival of humanity. Covid-19 pandemic is a reminder as to how one group of population can affect the whole world. World Health Organization defines health as 'a state of com-plete physical, mental and social well-being and not merely the absence of disease or infirmity'. Achievement of such a state and the 'right to health' is the domain of 'public health'. Climate change, as acknowledged by the UN as one of the greatest challenges, is posing threat for the realization of universal health and sustainability goal. Different risks to human health come from the complexity of climate change. Climate change requires efforts from States as well as global institutions. Keeping the above in view, this chapter examines the sustainable development perspective, the various facets of right to health and how they are getting affected by climate change. 2026 by IGI Global Scientific Publishing. All rights reserved. -
Right to Internet Access vs. National Security Concerns: Addressing the Complex Questions of the Digital Era
The globe has made tremendous progress over the last few decades. The scientific and technological advancements have provided immense possibilities and opportunities to the world through the latest digitalization process. The present century is even termed as the digital era. Internet access is the most crucial element for the maximum utilization of digital technologies. Accordingly, the concept of digital rights evolved and identified the right to Internet access as the most essential digital right. However, several countries have not implemented this right as part of their human rights framework due to a lack of an international covenant or treaty. Besides, many countries violate the right to Internet access through many mechanisms, claiming national security grounds. In 2024, almost 300 Internet shutdowns happened across the globe, violating peoples fundamental rights. From this perspective, this chapter examines the relevance of Internet access and critically evaluates the national security defensive mechanism. 2026 by IGI Global Scientific Publishing. -
Right to Privacy and State Surveillance: An Analysis of the Legal and Ethical Challenges Concerning State Surveillance
The conflict between state surveillance and the fundamental right of privacy is apparent even at the conceptual level. The rise of advanced surveillance mechanisms has been another abetting factor to this conflict while on the other hand many theorists have been at work to find a harmonisation between them. Surveillance techniques and mechanisms have indeed been helpful in thwarting the threats to national security and keeping the integrity of a nation. The chapter analyses whether the collective good that upholds state surveillance tends to override the individual interest that advocates the right to privacy. It considers the criteria or procedures followed to arrive at such a decision and whether the authorities could have been advised to find a better solution through harmonization rather than neglecting one in favour of the other. It explores the morality behind surveillance, including the panopticon model by Bentham, which was an example of promoting moral behaviour through surveillance. Copyright 2026, IGI Global Scientific Publishing. Copying or distributing in print or electronic forms without written permission of IGI Global Scientific Publishing is prohibited. Use of this chapter to train generative artificial intelligence (AI) technologies is expressly prohibited. The publisher reserves all rights to license its use for generative AI training and machine learning model development. -
Rights of Indigenous Peoples Vis-a-Vis Environmental Justice in the Himalayan Region
In the global mountain ecosystems, the Himalayan region has a unique place. These geo-dynamically vibrant mountains are home to a diverse range of flora, fauna, human populations, and cultures. Although the region is rich in natural resources, most of its population remains marginalised. The Himalayan environment and people have been closely intertwined since antiquity. However, the conditions in this delicate resource region are currently getting worse due to human activities. The attempts to modify the Himalayan environment for developmental purposes have been causing environmental imbalance significantly impacting the security of the Himalayan ecosystem and its inhabitants. Environmental justice demands addressing environmental issues in the Himalayan region from the viewpoint of impacted and indigenous peoples communities. Acknowledging the aforementioned, this chapter endeavours to explore, examine and comprehend the notion of environmental justice concerning the rights and interests of the indigenous population inhabiting the Himalayan region. 2025 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG. -
Rise of Populism in Northeast India: A Case of Assam
A blend of historical and contemporary forces has shaped populism in India. The Congress governments shortcomings (20042014), marked by dynastic politics and corruption, paved the way for the rise of populism, particularly under the Bharatiya Janata Party (BJP), which capitalized on anti?elite sentiment. Narendra Modis leadership, characterized by Hindu nationalism and a development agenda, has significantly altered Indias political landscape. This study focuses on the rise of populism in Northeast India, specifically in Assam, where populist movements and leaders have increasingly influenced the socio?political environment. It explores the socio?economic conditions and identity politics that have driven the growth of populist ideologies, often leading to the marginalization of ethnic minorities. By analyzing key political events, movements, and policies, the research seeks to uncover the root causes of populism in Assam and its impact on democracy, social cohesion, and regional stability. Employing a qualitative methodology that includes political speeches, media analysis, and empirical evidence, the study examines how political leaders in Assam have mobilized regional and ethnic sentiments for electoral gains, further exacerbating ethnic marginalization. The article aims to understand the catalysts and consequences of populist governance in Assam, offering insights into the broader trend of populism in Northeast India and its future trajectory. 2024 by the author(s). -
Rising from Covid-19: Hybrid Teaching Experiences of University Teachers
COVID-19 pandemic has affected higher education all over the globe. The unprecedented situation has brought changes in teaching at universities. Universities across the world decided to teach online. By the time, teachers hone online teaching Skills Universities resorted to hybrid teaching. Teachers are oblivious to hybrid teaching and had situational anxiety. In spite of all teachers started their hybrid classes. The present study assumes transtheoretical model for hybrid learning derived from ecosystem theory. Recent research is yet to capture the hybrid teaching experiences of university teachers amid COVID-19. The present study employed qualitative research method to capture in-depth understanding of hybrid teaching experiences. Study interviewed eight University teachers to understand the hybrid teaching experiences and applied interpretative phenomenological analysis (IPA) to interpret the interview data. The findings of the study emerged with themes and sub-themes describing hybrid-teaching experiences and listed major challenges faced by them. Few of the challenges are handling online and offline students group simultaneously, technology integration to classes, technological barriers, and COVID-19 anxiety. Study recommends more research in the area for broader understanding of nuances of hybrid teaching. Nevertheless, to find solution to the challenges faced by the teachers while conducting hybrid classes. The Author(s), under exclusive license to Springer Nature Switzerland AG 2025. -
Risk Analysis Using Ensemble Learning Model for Smart Energy Sustainability in Indian Cities
Analyzing risks involved in smart energy sustainability entails identifying, assessing, and mitigating diverse types of risks that include financial, operational, and environmental factors that can affect the dependability, efficiency, and ecological friendliness of energy systems in smart cities. The study uses a high-frequency dataset from smart meters in Mathura and Bareilly districts in India collected over 2 years from May 2019 to October 2021 which contains millions of data points. To forecast energy consumption patterns and reveal possible risks we used machine learning models like linear regression, random forest, gradient boosting, and extra tree classifier. By using several machine learning algorithms such as multiple linear regression (MLR), classification trees (CTs), random forests (RFs), and support vector machines (SVMs) this paper developed an empirical model to establish an interrelationship between district heating systems investments influence on the performance improvement variables for sustainable development goals. Notably, the ensemble learning approach had a remarkable precision rate of 94.69% indicating its importance in forecasting and managing demand for power. Moreover, the findings provide insights that could help policymakers and service providers improve urban energy sustainability and efficiency. The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025. -
Risk and Resilience in Human Emergencies: Pedagogical Directions from a Psychosocial and Neuropsychological Paradigm
This chapter will furnish an introductory sketch of theoretical perspectives and current empirical findings on risk and resilience in human emergencies. While risk is an inherent part of human emergencies, resilience, the ability of individuals and systems to maintain functioning levels post adversity and adapt is equally important. The goal will be to collate conceptual framework and evidence to provide evidence-informed practices and directions for pedagogy. We will review a wide range of theoretical expositions and focus them on the level to explore how risk and resilience influence and are influenced by the socio-political, environmental, and psychological experiences of learners. Practical examples and best practice recommendations for pedagogy and andragogy to reduce risk and develop resilience at the individual and collective levels will be discussed. We will propose a model to include psychological science in pedagogical experiences to improve conceptualisation, experience, analysis, and application of the teaching and learning process to cope with human emergencies. 2025 selection and editorial matter, Kennedy Andrew Thomas and Joseph Varghese Kureethara; individuals, the contributors. -
Risk Assessment Model for Quality Management System
The ecological and economic risk assessment system and its cost were also factored into the document. The distribution of workplace challenges and hazards, represented by quantitative or subjective occupational risk metrics, was typical in the areas of building safety and environmentally responsible workers. Environmental risk assessment refers to the identification & evaluation of risks, the formulation & application of managerial decisions to lessen the chance of unfortunate conditions, and also the substantial decrease of materials or other damages. Risk assessment facilitates the transition from an area of uncertainty to one where outcomes are more or less expected. The Deming-Shewhart cycle, which would be fully linked to the policy process and performance measurement system, appears to be the implementation technique of the ecological and economic structure under consideration. It would be a cyclical sequence of the associated effective measures. A high degree of adaptability to any internally or externally stressful conditions would be ensured by the synthesis of the fundamentals of the management system & mechanisms for controlling environmental potential costs. This also guarantees the rapid identification of expert hazards, optimization and efficiency gains. 2022 IEEE. -
Risk Behavior Among Emerging Adults: The Role of Adverse Childhood Experiences (ACE), Perceived Family and Interpersonal Environment
Background: Evidence demonstrates that ambiance provided during childhood and the interactions of children with different social agents during childhood have an impact on their adult behaviour. Objective: The current research tries to explore the role of adverse childhood experiences and perceived family and interpersonal interactions in their resultant adult risk behaviour. Method: Around 613 emerging adults (1824 years; Male 343 and Female 270) from the northern districts of Kerala, India took part in the study. The participants were selected using multistage sampling techniques. A Semi-structured Questionnaire was used to understand the perceived family and interpersonal environment. In addition, a checklist (adopted from the risk behaviour scale and youth risk behaviour survey) was also employed. The checklist assisted to understand the presence of actual risk behaviours. Results: Hierarchical Logistic Regression analysis is used to test the hypotheses. The results revealed that 87.2 % of the participants were engaged in at least one type of risk behaviour. Socio-demographic variables (gender and family type) and items of perceived family and interpersonal relationships and adverse childhood experiences were found to be significant predictors of emerging adult risk behaviour. Conclusion: The results further highlight the significance of childhood experiences and the current family environment of emerging adults in understanding their behaviour, and in designing evidence-based intervention program for emerging adults. 2023 The Author(s).