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Serendipitous detection of an intense X-ray flare in the weak-line T Tauri star KM Ori with SRG/eROSITA
Weak-line T Tauri stars (WTTS) exhibit X-ray flares, likely resulting from magnetic reconnection that heats the stellar plasma to very high temperatures. These flares are difficult to identify through targeted observations. Here, we report the serendipitous detection of the brightest X-ray flaring state of the WTTS KM Ori in the eROSITA DR1 survey. Observations from SRG/eROSITA, Chandra X-ray Observatory, and XMM-Newton are analysed to assess the X-ray properties of KM Ori, thereby establishing its flaring state at the eROSITA epoch. The long-term (1999-2020) X-ray light curve generated for the Chandra observations confirmed that eROSITA captured the source at its highest X-ray flaring state recorded to date. Multi-instrument observations support the X-ray flaring state of the source, with time-averaged X-ray luminosity reaching at the eROSITA epoch, marking it the brightest and possibly the longest flare observed so far. Such intense X-ray flares have been detected only in a few WTTS. The X-ray spectral analysis unveils the presence of multiple thermal plasma components at all epochs. The notably high luminosity , energy (erg), and the elevated emission measures of the thermal components in the eROSITA epoch indicate a superflare/megaflare state of KM Ori. Additionally, the H line equivalent width of from our optical spectral analysis, combined with the lack of infrared excess in the spectral energy distribution, were used to re-confirm the WTTS (thin disc/disc-less) classification of the source. The long-duration flare of KM Ori observed by eROSITA indicates the possibility of a slow-rise top-flat flare. The detection demonstrates the potential of eROSITA to uncover such rare, transient events, thereby providing new insights into the X-ray activity of WTTS. The Author(s), 2025. Published by Cambridge University Press on behalf of Astronomical Society of Australia. -
Serendipitous detection of an intense X-ray flare in the weak-line T Tauri star KM Ori with SRG/eROSITA
Weak-line T Tauri stars (WTTS) exhibit X-ray flares, likely resulting from magnetic reconnection that heats the stellar plasma to very high temperatures. These flares are difficult to identify through targeted observations. Here, we report the serendipitous detection of the brightest X-ray flaring state of the WTTS KM Ori in the eROSITA DR1 survey. Observations from SRG/eROSITA, Chandra X-ray Observatory, and XMM-Newton are analysed to assess the X-ray properties of KM Ori, thereby establishing its flaring state at the eROSITA epoch. The long-term (1999-2020) X-ray light curve generated for the Chandra observations confirmed that eROSITA captured the source at its highest X-ray flaring state recorded to date. Multi-instrument observations support the X-ray flaring state of the source, with time-averaged X-ray luminosity reaching at the eROSITA epoch, marking it the brightest and possibly the longest flare observed so far. Such intense X-ray flares have been detected only in a few WTTS. The X-ray spectral analysis unveils the presence of multiple thermal plasma components at all epochs. The notably high luminosity , energy (erg), and the elevated emission measures of the thermal components in the eROSITA epoch indicate a superflare/megaflare state of KM Ori. Additionally, the H line equivalent width of from our optical spectral analysis, combined with the lack of infrared excess in the spectral energy distribution, were used to re-confirm the WTTS (thin disc/disc-less) classification of the source. The long-duration flare of KM Ori observed by eROSITA indicates the possibility of a slow-rise top-flat flare. The detection demonstrates the potential of eROSITA to uncover such rare, transient events, thereby providing new insights into the X-ray activity of WTTS. The Author(s), 2025. Published by Cambridge University Press on behalf of Astronomical Society of Australia. -
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Series solutions for an unsteady flow and heat transfer of a rotating dusty fluid with radiation effect
A theoretical analysis of free convective MHD flow of an unsteady rotating dusty fluid under the influence of hall current and radiation effect is carried out. The fluid flow is considered in the porous media under the influence of periodic pressure gradient and the fluid is assumed to be viscous, incompressible and electrically conducting with uniform distribution of dust particles. The governing partial differential equations are solved analytically using perturbation technique and the expressions for skin-friction is also derived. Further the effect of various pertinent parameter like magnetic parameter, rotation parameter and Hall current parameter on velocity of both fluid and dust phases are depicted graphically and the effect of radiation parameter, Grashof number and Prandtl number on temperature profile is also discussed in detail. 2017, Univerzita Komenskeho. All rights reserved. -
Servant leadership and diversity: A focus on ethnic and cultural diversity
Business organizations becoming global is nothing new in the current world due to the ever-shrinking physical and communication boundaries. Going global has its benefits and limitations. Benefits would be less expensive land, labor, and resources and reduced transportation cost by being present in countries with vast requirements for an organization's products or services. At the same time, the limitations would be to manage people or lead them toward shared organizational goals. India being a country with enormous opportunities has diverse cultures and practices. Thus, leading various people as employees would be a challenge. What may work in the Western countries may not work in India due to its vast diversity in culture, language, and ethnicity. This research aims to understand the servant leadership approach and if it would be applicable in India. In the context of diverse cultures, the authors analyze the servant leader's role in an organization and compare the practices of servant leadership in various other countries. 2023 by IGI Global. All rights reserved. -
Servant Teachers and Online Learning in Higher Education: A Narrative Enquiry into Experiences of Teachers During COVID-19 Outbreak
This research examines the lived experiences of servant teachers of higher education during the COVID-19 pandemic focusing on the use of technology and challenges within online teaching frameworks. It aims to fill the gaps in literature regarding the individual practitioner-servant leadership in digital education settings. Ethical considerations were rigorously maintained. This research adapted qualitative research approaches guided by the SL-7 scale to identify servant teachers and semi-structured interviews to capture their lived experiences. Data analysis employed interpretive phenomenological analysis (IPA) through Osborn and Smith's (2006) four stages of IPA. The analysis yielded seven core themes: engagement, technology, experiences, impact, well-being, performance, and policies. The study illuminates how pedagogical approaches need to be student-centered but were technologically constrained from a servant teacher's perspective, thus shedding light on the dynamics of servant leadership on supportive and nurturing pedagogies in education during emergencies. The research contributes to the discourse on leadership in digital education by emphasizing the value of servant leadership traits in enhancing student satisfaction, retention, and overall academic well-being. 2026 by Divya Dosaya, Anupama Sadasivan, Sonia David, Athira M. and Palak Pipalia. -
Serverless Architecture - A Revolution in Cloud Computing
Emergence of cloud computing as the inevitable IT computing paradigm, the perception of the compute reference model and building of services has evolved into new dimensions. Serverless computing is an execution model in which the cloud service provider dynamically manages the allocation of compute resources of the server. The consumer is billed for the actual volume of resources consumed by them, instead paying for the pre-purchased units of compute capacity. This model evolved as a way to achieve optimum cost, minimum configuration overheads, and increases the application's ability to scale in the cloud. The prospective of the serverless compute model is well conceived by the major cloud service providers and reflected in the adoption of serverless computing paradigm. This review paper presents a comprehensive study on serverless computing architecture and also extends an experimentation of the working principle of serverless computing reference model adapted by AWS Lambda. The various research avenues in serverless computing are identified and presented. 2018 IEEE. -
Serverless Data Processing System and its Design Space Consideration
Serverless computing is becoming increasingly important in data-processing applications in science and business. The scheduler is at the centre of serverless data-processing systems, allowing for dynamic decisions on job and data placement. The complex design space, which is influenced by various user, cluster, and workload variables, presents problems for developing high-performance and cost-effective scheduling structures and processes. To make this exploration easier, we present Sched-Probe, a framework that includes a conceptual model and simulator for systematic design space exploration. Using the Sched-Probe framework, we evaluate the performance of three scheduling systems and two techniques using real-world workloads. Our open-source software is now available on ExDe, allowing system designers to collaborate on delving into the complexity of serverless scheduling, paving the way for optimised and efficient data-processing systems. 2024, Iquz Galaxy Publisher. All rights reserved. -
Service delivery quality improvement models: A review /
Procedia Social Science And Behavioral Sciences, Vol.144, pp.510-527, ISSN No: 1877-0428. -
Service industry alchemy: A symphony of digital innovations in customer engagement
The emergence of digitization, automation, and artificial intelligence has transformed service delivery, allowing businesses to increase productivity, tailor client experiences, and provide cutting-edge solutions. The delivery, use, and accessibility of services are changing in various service sectors due to innovations. Among them, healthcare, education, and finance have received considerable attention in recent years. To synthesize prior research on innovations in the service industry, the chapter attempts a thematic, sentiment, and bibliometric analysis of the research domain. For the analysis, data was extracted from the Scopus database and was filtered by application of inclusion-exclusion, with the use of NVivo and Bibliometric software VOS viewer. Most productive and influential articles, authors, journals, and affiliations were recognized. Thematic mapping and trend analysis revealed past and present research subdomains that were used for the prediction of future research agendas. 2024, IGI Global. All rights reserved. -
Service learning as a pedagogical strategy: A case study on disability inclusion
Diversity and inclusion are the growing concerns of society and every organisation including higher educational institutions (HEIs) is designing strategies to ensure diversity equality and inclusion (DEI). To understand how students engage with the idea of disability and inclusion in education, this study explores the journey of undergraduate students with an organization for visually challenged students. This qualitative, descriptive study used interviews and focus group discussion (FGD) along with the analysis of chosen reflective journals. SL activities enabled students to reflect on the learning challenges faced by the visually challenged students as well as their caretakers. This also made them reflect on the larger academic environment at the higher education level and come up with suggestions to make the HEIs more inclusive for the visually challenged. This study emphasizes the nature of their engagement and the transformative aspects of the learning process that they experienced by focusing on the students' experiences and challenges. 2024, IGI Global. All rights reserved. -
Service learning beyond the classroom: Engaging students in environmental stewardship
Service learning offers a dynamic approach to education, extending learning beyond the classroom and into the community. This chapter explores integrating service learning principles with environmental stewardship, focusing on engaging students in meaningful activities that contribute to the conservation and protection of the environment. By immersing students in real-world environmental projects, this chapter integrates six stages of the IPARDC model with environmental stewardship. Besides that, this chapter discusses a six-step system focused on environmental stewardship for service learning. Moreover, it discusses strategies for designing and implementing effective service-learning experiences that promote environmental awareness, sustainability, and social responsibility. Through collaboration with community partners and integration with the academic curriculum, service learning empowers students to actively participate in environmental stewardship efforts actively, fostering a sense of responsibility and advocacy for the natural world. 2024, IGI Global. All rights reserved. -
Service Quality in Tourism and Hospitality: A Review of Literature
The study aims to explore the literature on service quality research within the Indian tourism and hospitality sectors. It synthesizes key insights by analyzing dimensions used to measure service quality, identifying sector-specific trends, and highlighting future research opportunities relevant to enhancing human resource practices. The review is based on 255 articles (1999-2024) based on a systematic approach, retrieved from Web of Science and Scopus. The literature review identified that the banking sector, education sector, healthcare sector, and tourism and hospitality sector are the popular sectors of Service quality research in India. Other sectors like the Airline sector, Insurance sector and automotive sector are slowly gaining momentum in this area of research. The scope of future research Service Quality research in India is identified and stated. The study offers insights into the sector wise dimensions of service quality and its future potential, particularly for academicians conducting research in a niche area. 2026, IGI Global Scientific Publishing. All rights reserved. -
Service quality matters of private hospitals in prevention of orthopedic issues during the covid-19 outbreak in india
This chapter explores patient satisfaction with healthcare service quality particularly medical and nonmedical service quality as a significant component in the appraisal of service quality attention of the COVID-19 outbreak. In this way, this investigation discovers how the patients evaluated service nature of facilities at private medical clinics in India. This examination in private emergency clinics with 300 patients arbitrarily chose from five private medical clinics. Information was gathered utilizing a survey,the legitimacy and dependability of which was affirmed in past examination. The outcomes demonstrated that among eight hypotheses of service quality, the patients were progressively happy with doctor meeting, services expenses, and confirmation process. There was a noteworthy connection between the positive impression of service quality and socio-economic factors in this research process. Most of the patients had positive involvement in visiting facilities and non-medical service quality arrangement. Copyright 2023, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. 2023 by IGI Global. All rights reserved. -
Service Quality, the Most Driving Factor for Use Continuance of Chatbot in Banking Sector
The challenges faced by businesses in todays context are numerous. There are many uncertainties. However, to achieve sustainable development many businesses have adopted artificial intelligence to improve customer experience. Particularly the banking industry has implemented AI in the form of Chatbot. A conversational application that answers the queries of the customers. This study aims to analyze the factors that influence the customers use continuance of Chatbot services in the banking industry. The survey evaluated various determinants such as Service Quality, Customer Satisfaction, Word-of-Mouth and Use Continuance. Data was collected from 232 bank customers in Bangalore, Karnataka, South India, through online and offline surveys using a random sampling method. The collected data was analyzed using IBM SPSS, and AMOS. The result shows that Service Quality has a significant effect on Satisfaction. And Satisfaction acts as a catalyst that impacts the Use Continuance of bank Chatbots. Loyalty and Word-of-mouth show mild mediation between Satisfaction and Use Continuance. The Author(s), under exclusive license to Springer Nature Switzerland AG 2025. -
Service Quality, the Most Driving Factor for Use Continuance of Chatbot in Banking Sector
The challenges faced by businesses in todays context are numerous. There are many uncertainties. However, to achieve sustainable development many businesses have adopted artificial intelligence to improve customer experience. Particularly the banking industry has implemented AI in the form of Chatbot. A conversational application that answers the queries of the customers. This study aims to analyze the factors that influence the customers use continuance of Chatbot services in the banking industry. The survey evaluated various determinants such as Service Quality, Customer Satisfaction, Word-of-Mouth and Use Continuance. Data was collected from 232 bank customers in Bangalore, Karnataka, South India, through online and offline surveys using a random sampling method. The collected data was analyzed using IBM SPSS, and AMOS. The result shows that Service Quality has a significant effect on Satisfaction. And Satisfaction acts as a catalyst that impacts the Use Continuance of bank Chatbots. Loyalty and Word-of-mouth show mild mediation between Satisfaction and Use Continuance. The Author(s), under exclusive license to Springer Nature Switzerland AG 2025. -
Service request scheduling based on quantification principle using conjoint analysis and Z-score in cloud
Service request scheduling has a major impact on the performance of the service processing design in a large-scale distributed computing environment like cloud systems. It is desirable to have a service request scheduling principle that evenly distributes the workload among the servers, according to their capacities. The capacities of the servers are termed high or low relative to one another. Therefore, there is a need to quantify the server capacity to overcome this subjective assessment. Subsequently, a method to split and distribute the service requests based on this quantified server capacity is also needed. The novelty of this research paper is to address these requirements by devising a service request scheduling principle for a heterogeneous distributed system using appropriate statistical methods, namely Conjoint analysis and Z-score. Suitable experiments were conducted and the experimental results show considerable improvement in the performance of the designed service request scheduling principle compared to a few other existing principles. Areas of further improvement have also been identified and presented. Copyright 2018 Institute of Advanced Engineering and Science. All rights reserved. -
Sesquiterpenoid-rich Java Ginger rhizome extract prompts autophagic cell death in cervical cancer cell SiHa mainly by modulating cellular redox homeostasis
Java Ginger or Curcuma zanthorrhiza Roxb. has long gained focus among tribal people of Java, for its medicinal properties mainly against gynaecological challenges. The present study aims to identify the most potent phytocompound present in the extract and determine primary mode of action accountable for cytotoxic activity of Curcuma zanthorrhiza rhizome extract against HPV16-positive SiHa cervical cancer cells. The phytochemically-rich extract of rhizome (CZM) was capable to inhibit proliferation of target cells in a dose-dependent manner with an IC50 of 150?g/ml. Dysregulation of intercellular antioxidant defence system resulted to surges in ROS and RNS level, increased calcium concentration and compromised mitochondrial membrane potential. Nucleus got affected, cell cycle dynamics got impaired while clonogenicity and migration ability diminished. Expression of viral oncogenes E7 and E6 decreased significantly. Accumulation of toxic cell metabolite and decrease in level of essential ones continued. Finally, alteration in PI3K/AKT/mTOR signalling route was followed by onset of autophagic cell death concomitant with the upregulated expression of Beclin1, Atg5-12 and LC3II. Curcumin and a novel crystal as well as few phyto-fractions were isolated by column chromatography. Of these, curcumin was found to be most potent in inducing cytotoxicity in SiHa while two other fractions also showed significant activity. Thus, CZM acted against SiHa cells by inducing autophagy that commences in compliance to the changes in PI3K/AKT/mTOR pathway mainly in response to oxidative stress. To the best of our knowledge this is the first report of Curcuma zanthorrhiza Roxb. inducing autophagy. 2022, King Abdulaziz City for Science and Technology. -
Setting benchmarks through Destination Management Organizations (DMOs): A study on the tourism policy of Karnataka, India /
Asian Journal of Management Sciences, Vol.2, Issue 6, pp.33-39, ISSN No: 2348-0351. -
SETTING NARRATIVE THROUGH INSTAGRAM POSTS: A STUDY OF BBC'S REPORTAGE ON AFGHANISTAN
Media organizations have an immense role to play in disseminating informa-tion and shaping perspectives across borders. Though the information revolution pro-vides us with many new opportunities, it also helps in establishing a single narrative through the cultural cultivation of popular media over time. Orientalism, in this manner, presents an image that the West created of the Near East centuries ago and these second-hand experiences are enhanced over the years by the powerful states and media organi-zations to maintain the established hegemony. This current study focuses on understanding the British Broadcasting Corporation's narrative and its ability to include and exclude certain historical facts while reporting on the Taliban's takeover of Afghanistan through Instagram posts. The study found BBC portraying a favorable image for the role played by the NATO allies in Afghanistan and described the Taliban as a sheer group of terror, barbaric, and inhumane organization, following extreme Sharia laws. 2022 Pluto Journals. All rights reserved.