Browse Items (11855 total)
Sort by:
-
A review on feature selection algorithms
A large number of data are increasing in multiple fields such as social media, bioinformatics and health care. These data contain redundant, irrelevant or noisy data which causes high dimensionality. Feature selection is generally used in data mining to define the tools and techniques available for reducing inputs to a controllable size for processing and analysis. Feature selection is also used for dimension reduction, machine learning and other data mining applications. A survey of different feature selection methods are presented in this paper for obtaining relevant features. It also introduces feature selection algorithm called genetic algorithm for detection and diagnosis of biological problems. Genetic algorithm is mainly focused in the field of medicines which can be beneficial for physicians to solve complex problems. Finally, this paper concludes with various challenges and applications in feature selection. Springer Nature Singapore Pte Ltd 2019. -
Strategies to manage power outages and optimize energy cost for developing countries through supply and demand side management
Developing Countries like India, face huge amounts of power cuts starting from a few hours to few days. Some of the main reasons are transmission and distribution losses, theft, lack of smart infrastructure, poor newlinemaintenance of the existing systems, lack of smart algorithms etc., Due to this reason consumers have moved to back up systems to feed their loads. Tonnes of diesel has been consumed through generators, due to power cuts, because to this consumers are suffering to pay extra cost for electricity as their energy bills are an addition of grid cost as well as the back up cost.The load dispatch centers will implement load shedding leading to a compete outage in a few areas. As a result the consumers in these areas newlineimmediately turn on their back up sources leading to an increase in energy cost. There are no smart algorithms used either to distribute the power at the utility end or to manage the loads during an outage, especially when the loads are running on back-up supply. This report suggests some smart algorithms to provide partial power to consumers rather than a complete outage, load shifting techniques to the consumers at the time of an outage so that they can optimize their back up cost, last but not the least smart newlineintegration of solar power to the consumers to optimize the over all energy costs. newlineThe partial outage algorithm results, in supplying partial power to consumers rather than a complete outage condition this is achieved by implementing a simple unitary method based on the power consumption of the newlineconsumers. By supplying partial power, the consumers can save a certain amount of expenditure on back up cost especially from diesel generators and also utilize the on grid solar generation if the consumer is having a solar roof top installation. -
Strategies to manage power outages and optimize energy cost for developing countries through supply and demand side management
Developing Countries like India, face huge amounts of power cuts starting from a few hours to few days. Some of the main reasons are transmission and distribution losses, theft, lack of smart infrastructure, poor maintenance of the existing systems, lack of smart algorithms etc., Due to this reason consumers have moved to back up systems to feed their loads. Tonnes of diesel has been consumed through generators, due to power cuts, because to this consumers are suffering to pay extra cost for electricity as their energy bills are an addition of grid cost as well as the back up cost.The load dispatch centers will implement load shedding leading to a compete outage in a few areas. As a result the consumers in these areas immediately turn on their back up sources leading to an increase in energy cost. There are no smart algorithms used either to distribute the power at the utility end or to manage the loads during an outage, especially when the loads are running on back-up supply. This report suggests some smart algorithms to provide partial power to consumers rather than a complete outage, load shifting techniques to the consumers at the time of an outage so that they can optimize their back up cost, last but not the least smart integration of solar power to the consumers to optimize the over all energy costs. -
Effects of dark matter in red giants
Dark matter (DM) which constitutes five-sixths of all matter is hypothesized to be a weakly interacting non-baryonic particle, created in the early stages of cosmic evolution. It can affect various cosmic structures in the Universe via gravitational interactions. The effect of DM in main sequence stars and stellar remnants like neutron stars and white dwarfs has already been studied. Red giant phase is a late stage of the evolution of stars. In this work, we study, low-mass red giants stars with admixture of DM and how this can effectively change the intrinsic properties of red giants such as their luminosities, temperatures and lifetimes. 2020 Elsevier B.V. -
-
Antecedents of psychological capital and its consequences on affective commitment and psychological wellbeing
Jharkhand Education Board stakeholders face the problem of dealing with the educational environment, thereby escalating a teacher's morale. To address this situation, a positive mindset in education, particularly among teachers, is desirable. Hence, based on positive psychology discipline, conservation of resource theory, and broaden and build theory, the study was carried out using a sequential explanatory mixed-method study design. The research questions addressed in the study were as follows: To what extent can the categories of proactive personality, emotional intelligence, servant leadership, and perceived organizational support predict PsyCap of teachers? To what extent will PsyCap predict the categories of affective commitment and psychological wellbeing? I considered both quantitative and qualitative methods; hence, this study had two phases. In the first phase, the data was gathered from 722 teachers using the survey instruments. The statistical analyses performed were Confirmatory Factor Analysis and Structural Equation Modeling with the software SPSS 20.0 and AMOS 20.0. For teachers of rural Jharkhand, the study found that psychological capital has three dimensions. Besides proactive personality, emotional intelligence, and servant leadership also impact psychological capital. Further, psychological capital affects affective commitment and psychological wellbeing. In the second phase, this study examined the way and the reason behind the functioning of the antecedents of psychological capital using qualitative content analysis. The results offered a comprehensive understanding and identification of the antecedents that form rural teachers' psychological capital. Implications of the research include recommendations for recruiting teachers with higher levels of psychological capital and professional development through in-service teachers' training with a specific focus on psychological capital. -
Antecedents of Psychological Capital and Its Consequences on Affective Commitment and Psychological Wellbeing
Jharkhand Education Board stakeholders face the problem of dealing with the educational environment, thereby escalating a teacher's morale. To address this situation, a positive mindset in education, particularly among teachers, is desirable. Hence, based on positive psychology discipline resource theory conservation, and broaden and build theory, the study was carried out using a sequential explanatory mixed-method study design. The research questions addressed in the study were as follows: To what extent can the categories of proactive personality, emotional intelligence, servant leadership, and perceived organizational support predict PsyCap of teachers? To what extent will PsyCap predict the categories of affective commitment and psychological wellbeing? We considered both quantitative and qualitative methods; hence, this study had two phases. In the first phase, the data was gathered from 900 teachers using the survey instruments. The statistical analyses performed were Confirmatory Factor Analysis and Structural Equation Modeling with the software SPSS 20.0 and AMOS 20.0. For teachers of rural Jharkhand, the study found that psychological capital has three dimensions. Besides proactive personality, emotional intelligence, and servant leadership also impact psychological capital. Further, psychological capital affects affective commitment and psychological wellbeing. In the second phase, this study examined the way and the reason behind the functioning of the antecedents of psychological capital using qualitative content analysis. The results offered a comprehensive understanding and identification of the antecedents that form rural teachers' psychological capital. Implications of the research include recommendations for recruiting teachers with higher levels of psychological capital and professional development through in-service teachers' training with a specific focus on psychological capital. -
The Jesuit educational mission in rural Chotanagpur, India: historical achievements and contemporary challenges
Jesuit schools, in particular, have been known for a long time to be centres of learning in Chotanagpur area, India, where tremendous efforts were made to achieve a high level of academic excellence; yet it appears that this legacy is not being sustained among rural, tribal, vernacular schools of Chotanagpur these days because of varied reasons. In addition, it is observed that the agents of education, namely teachers, working in these schools have ceased to represent desirable attitudes (psychological wellbeing and affective commitment) which are essential for the teaching-learning process. If Jesuits want to maintain relevant and inspirational education in Chotanagpur, then they need to discern, decide, and dedicate themselves to guarantee teachers psychological well-being and affective commitment so that teachers can become creators of the Jesuit education ethos. Against this backdrop, the present research paper discusses the scenario of Jesuit run rural schools in Chotanagpur its historical achievements and contemporary challenges. In addition, practical implications and recommendations for a better future are discussed. 2019 Informa UK Limited, trading as Taylor & Francis Group. -
Predictors of Positive Psychological Capital: An Attempt Among the Teacher Communities in Rural Jharkhand, India
In the recent times, researchers have shown an increased interest in positive psychological capital (PsyCap). However, it is acknowledged that due to the limited number of studies conducted on the antecedents of psychological capital, there is a lack of sufficient data for conclusively proving the antecedents of PsyCap. Consequently, this article aims to explore the potential antecedents of PsyCap as a reliable source of data in the context of rural school teachers. The focus is to investigate both the individual differences and the contextual factors as desirable variables that constitute PsyCap among the school teachers of rural Jharkhand, India. Samples of 1,120 respondents from different rural schools were collected and analysed with Structural Equation Modeling (AMOS 20.0). The findings of the study explained that both the individual differences (proactive personality and emotional intelligence) and the contextual factors (perceived organizational support, servant leadership and meaningful work) have a positive relationship with PsyCap. The impact of PsyCap on teacher performance can form the basis for further research on the subject. JEL Codes: M12, M53 2021 XLRI Jamshedpur, School of Business Management & Human Resources. -
The effect of servant leadership on ad hoc schoolteachers affective commitment and psychological well-being: The mediating role of psychological capital
Progress on the fourth United Nations Sustainable Development Goal (SDG4), which strives to ensure inclusive and equitable quality education, can only be made with teachers whose levels of job satisfaction and dedication to teaching are high. The authors of this article conducted a survey among ad hoc teachers (also referred to as para teachers) in rural India. The purpose of their study was to find out the extent to which being led by principals who practised a management style termed servant leadership positively impacted respondents affective commitment and psychological well-being. A servant leader seeks to serve by developing the followers selfhood in various relational, ethical, emotional and spiritual contexts. This has the effect of encouraging the followers to become the best version of themselves. Data collection involved the completion of a questionnaire by a sample of 1,120 (840 female, 280 male) para teachers from 17 non-formal community learning centres and 10 schools in the Indian state of Jharkhand. The results of the survey revealed that there is an indirect effect of servant leadership on affective commitment and psychological well-being through a set of three elements, hope, efficacy and resilience, which together amount to a para teachers personal resource of psychological capital. Relying on the findings of their research, the authors suggest that it will be beneficial for Jharkhands Department of Education to implement interventional teacher training programmes which nurture servant leadership among school principals and educational officers and thereby foster psychological capital among para teachers. 2020, UNESCO Institute for Lifelong Learning and Springer Nature B.V. -
Ecclesiology, piety, and presbyterian and independent polemics during the early years of the english revolution
Religious controversy swept across England during the revolutionary decades of the 1640s and 1650s. Historians have studied the attendant ecclesiological debates meticulously. The piety as practiced by the puritans has also been carefully examined. Yet generally, these two subjects of ecclesiology and piety have been kept as separate compartments of analysis. The plethora of tracts that rolled off the press during the initial years of the 1640s, nevertheless, shows that many contemporary polemicists were keen to tie the two themes together. The Presbyterian and Independent polemicists were no exception. As this article seeks to demonstrate, a common feature of their publications was the belief that their preferred ecclesiastical polity best served the purpose of promoting individual piety and creating a godly society. Thus the Presbyterian and Independent conflict waged not only over issues of ecclesiology proper such as categories of church offices and of governing councils or composition of church membership to which historians have directed their attention hitherto, but also over questions of how ecclesiology affected piety. Such conflict was a reflection of the commitment of Presbyterians and Independents to their respective vision of reformation for the country. More broadly, this article shows a facet of religious controversy that ultimately led to the disintegration of the godly community and weakened the base of support for the Commonwealth and the Protectorate. American Society of Church History 2015. -
New constituents triterpene ester and sugar derivatives from Panax ginseng Meyer and their evaluation of antioxidant activities
Panax ginseng C. A. Meyer (Araliaceae), is a well-known herb and used in the old established system of Oriental remedy, especially in Japan, China and Korea. Four new compounds characterized as (cis)- 7?,11?,19,21-tetra-O-decanoyl-18, 22?-dihydroxy-dammar-1-en-3-one (1), 3?,4?,12?-trihydroxystigmast-5-en-21-yl octadecan-9?,12?-dienoate (2), dammar-12, 24-dien-3?, 6?, 15?-triol-3?-D-arabinopyranosyl-6?-L-arabinopyranoside (3) and dammar-24-en-3?, 6?, 16?, 20?-tetraol-3?-D-arabinopyranosyl-6?-D-arabinopyranoside (4) were isolated and established from the ethyl acetate and butanol extracts of the roots of P. ginseng. Their structures were established on the basis of spectral data and chemical reactions. Natural compounds indicative a great reservoir of materials and compounds with evolved biological activity, including antioxidant. Compounds 14 were investigated in vitro for antioxidant potential using ferric reducing antioxidant power (FRAP), the Nitric oxide (NO) scavenging activity, reducing power, phosphomolybdenum and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging actions, and the decision showed the compounds 3and 4 have probablyessential antioxidant properties than the compounds 1and 2 presented weak activity. 2016 The Authors -
Exploring the Role of Multi-Catalytic Sites in an Amorphous Co-W-B Electrocatalyst for Hydrogen and Oxygen Evolution Reactions
Amorphous materials are used in multitude of catalytic applications, including electrocatalytic water-splitting. Identification and investigation of active sites in amorphous catalysts are rarely reported, mainly owing to the complexity of the systems. Herein, we report an amorphous bifunctional Co-W-B electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The optimized Co-W-B catalyst showed promising overpotential values of 97 mV (HER) and 292 mV (OER), respectively, to achieve 10 mA cm-2 in 1 M KOH, with good stability. The promoting effect of W in Co-B was investigated experimentally, while computational tools were used to identify all the possible catalytic sites in an amorphous Co-W-B model and classify the most preferred sites for HER and OER. The presence of multi-catalytic sites with specific selectivity toward HER and OER was observed, which explained the bifunctional activity of Co-W-B. This study will foster better understanding of the origin of catalytic activity in similar amorphous systems. 2023 The Authors. Published by American Chemical Society. -
Authentic leadership in a pandemic world: an exploratory study in the Indian context
Purpose: The purpose of this paper is to explore the strategies that helps leaders be authentic in order to be able to respond proactively and become effective in helping their organisations they lead in the context of the COVID-19 pandemic. Design/methodology/approach: Using a qualitative approach, 25 business leaders from diverse sectors were interviewed to understand what sustained them in an adverse context. Findings: Results reveal various dimensions of authentic leadership in a disruptive environment. Authentic leaders have to exhibit distinct behaviours that stems from re-examining oneself to reaffirming organisational purpose. Reimagining the work is emerged as the newer dimension to the authentic leadership considering the context of COVID-19. Practical implications: The results of the study provides insights for anyone leading organisations in today's disruptive business environment. The findings of this study can be used further to undertake quantitative studies to test professional relationships and understand the leadership strategies at different time frames. Originality/value: This paper addresses the strategies that leaders successfully follow to withstand the COVID crisis and highlights the different roles and behaviours that helped leaders to address the crisis confidently. 2022, Emerald Publishing Limited. -
Ethical sensitivity of aspiring business leaders: Indian context
Ethical business leaders can make a huge impact in creating flourishing communities in todays world where Corporations are immensely powerful. In the business context, the first step of ethical decision-making is recognising the ethical dimension of a business problem itself, ethical sensitivity. This study investigates the impact of ethics education in the business program as well as role of early education environment in influencing the ethical sensitivity of business students. It was found that both these variables have significant impact in the ethical sensitivity of the participants of the study. The research has implications in revisiting the ethics education in universities and the role of early education environment in developing ethical business leaders for the sustainable future of our country. 2020 Journal of Dharma: Dharmaram Journal of Religions and Philosophies (DVK, Bangalore). -
Impact of Urban Environmental Quality, Residential Satisfaction, and Personality on Quality of Life among Residents of Delhi/NCR
Environmental quality and Sustainability seek to preserve, enhance and protect our environmental resources that directly aim at providing an amicable quality of life and sustainable development for the upcoming generations. Considering the hazardous environmental urban quality in Delhi NCR, air pollution is the topmost factor deteriorating health of the population in general. The urban air database by WHO reports Delhi exceeding the maximum PM10 limit by almost 10-times at 292 ?g/m3. Noticing that an individual's surroundings have an enormous value in human lives, the study aimed at understanding the impact of urban environmental quality, residential satisfaction, and personality on the quality of life among residents of Delhi NCR. In addition, we also track the environmental worldviews to attitudes on pro-environmental behavior in understanding sustainability. The results from the SEM model indicated that one index rise in RESS lead to a fall in quality of life by 0.029-point value whereas one index rise in personality could enhance the quality of life by 0.15-point value. Pro-Environmental Behaviors and Urban Environmental factors did not showcase any significant impact on the quality of life. The Electrochemical Society. -
Air Quality Index, Personality Traits and Their Impact on the Residential Satisfaction and Quality of Life: An Exploratory Path Analysis Model
The environment directly influences the behaviour, experiences, and also the well-being of people. It is not only the outside environment but the indoor environmental quality (IEQ) that also affects the well-being of its residents (Arif et al., 2016). The objective of the present study is to study the relationship between Air Quality Index (AQI), Personality traits, Residential Satisfaction, and quality of life among participants living in Bengaluru, Chennai, and Delhi NCR. A total of 685 residents aged 18-65, living in Bengaluru, Chennai, and Delhi NCR for over 2 years, who responded to the call for participation were selected for the study. Data was collected through online Google forms. Correlation and regression analysis were carried out to understand the strength and direction of the relationship between study variables. SPSS AMOS was used to estimate the measurement model and capture mediation paths. The results present an exploratory model which identifies air quality index and personality traits and their contribution towards the perceptions of residential satisfaction. The study also establishes a link between residential satisfaction and quality of life, the new ecological paradigm, and the dominant social paradigm. The present study highlights the necessity to adopt a pro-environmental approach to improve the quality of life. 2024 - IOS Press. All rights reserved. -
Young Adults Consumption Patterns and Attitude towards Minimalist Lifestyle during COVID-19 Pandemic- An Exploratory Study
Purpose The COVID-19 pandemic disrupted the consumption patterns of people the world over. The patterns and trends of consumption that drive markets were no longer relevant during the pandemic. Newer factors drove the consumption decisions and consumers have changed their patterns. COVID pandemic enforced citizens globally to adopt minimalism. This research is aimed at qualitatively understanding the consumer experiences during the lockdown period and their future orientation towards a minimalist lifestyle. Method Participants were young adults of 18 to 25 years of age from India. A constructivist paradigm was adopted to understand the subjective meaning of their choices. Data was collected through Focused group discussions and content analysis was used to arrive at the themes. Findings Data revealed that priority was given to buying essential items during times of crisis. Stockpiling, conscious buying and simple living were the cornerstones of the consumption patterns. Practical implications Findings have implications for sustainable consumption practices with a minimalist approach. Understanding the future orientation of consumers towards adopting a minimalist lifestyle could help market researchers better understand sustainable consumption patterns, thereby helping them in tailoring their product marketing. The far-reaching implications of the results focus on green consumption values and ecological responsibility. Value This paper seeks to explore attitudes and beliefs on sustainable consumption in a young adult population during the Covid-19 outbreak and has implications for sustainable consumption practices using a minimalistic approach in the future. 2022 RESTORATIVE JUSTICE FOR ALL. -
Measures of superstitious beliefs: A meta-analytic review of research
Superstition is a term which is widely used across the globe but, is understood differently by people from different cultures. Superstitious beliefs are challenged by emerging scientific knowledge, and they continue to persist even among advanced societies. In recent years, superstitions are viewed as a belief in luck. The instruments that are available to assess this phenomenon are few and have insufficient psychometric properties. There is a need for developing new standardised measures which explore the complex, conceptual nature of superstitions. A meta-analysis of existing literature was done to explore the existing measures of superstitious beliefs and to examine the relationship between reliability of scales and the various attributes of scales. A literature search was conducted in relevant databases. Suitable transformation procedures for coefficient alpha were used. Meta-regression analysis was done to explore the heterogeneity of data. 41 scales measuring superstitions were analysed. Results indicate that reliability coefficients were from heterogeneous samples. Regression analysis revealed that few characteristics of scales predicted reliability. Journal of the Indian Academy of Applied Psychology. -
Development and validation of superstitious beliefs scale
Superstitions though considered as irrational beliefs are widely prevalent in all cultures. Most of the existing work on superstitions are predominantly based on traditional western beliefs. The relevance of established superstition scales which are developed in western societies in collective societies need to explored. Interdependent nature of self which is a characteristic of collectivistic culture also has a role in belief formation. The present study aims at developing a new self-report measure of superstitious beliefs scale. Study 1, focused on exploring the factor structure and establishing reliability over a sample of 338 undergraduate students. The 17-item Superstitious Belief Scale (SBS) developed distinguishes a six-factor structure namely, Popular Beliefs, Belief in Good Luck, Belief in Bad Luck, Personal Superstitions and Social Superstitions. The six-factor structure was evaluated on a new sample (N = 483) using confirmatory factor analysis in Study 2. The internal consistency values of the new SBS over Studies 1 and 2 indicated high reliability. The findings have important implications for existing theory on superstitions. The new framework proposes and demonstrates the need to base the understanding of measurement of superstitious beliefs relevant in India. AesthetixMS 2020.