147 research outputs found
Disaster mental health in India: a long journey ahead
No full textThis is a book chapter published in Leadership in Indian psychiatry: converting thoughts into practice 1947-2025. Essays in honour of Professor B.S. Chavan edited by R. Srinivasa Murthy & Nitin Gupta.India is vulnerable to catastrophic natural events due to its geo-climatic conditions and man-made disasters. There is a need to study the mental health consequences of the disasters and their intervention efforts. A comprehensive literature search was done regarding the mental health of the disaster survivors in India based on the epidemiological and interventional studies from electronic databases and manual searches. Large proportions of disaster survivors in India suffer from diagnosable psychiatric disorders, mostly depression, anxiety and posttraumatic stress disorders. While there are many studies following natural catastrophic events; there are an inadequate number of studies on industrial disasters, mass conflicts, and riots. Prevalence figures of psychiatric disorders have varied depending upon the disaster, exposure and methodology. Many post-disaster interventions have been tried; however the literature about the interventions is not robust. There is a need for studies related to the support for the mental health consequences of disasters in the community and their effectiveness. Culturally appropriate coping activities have been observed amongst the survivors, which need to be explored further as possible intervention methods. Mental health related assessments and interventions need to be prioritised in disaster related support activities and policies. Public education about dealing with disasters, their impact on mental health, self-care and opportunity for professional care are essential. There is a need for an appropriate system to be in place for immediate, short and long term mental health support for the disaster survivors
Prediction of Attention/deficient and Hyperactivity disorder in Online learning
No full textThe rise of online learning poses challenges in identifying and supporting students with cognitive disorders, notably ADHD. This neurodevelopmental disorder, diagnosed in childhood, impacts academic performance. With the prevalence of online education, early detection and intervention for ADHD are crucial. Predictive techniques using digital traces, behavioral patterns, and physiological data during online sessions are studied. Machine and deep learning models, including supervised and unsupervised approaches, identify ADHD-related behaviors. Natural language processing analyzes textual interactions for signs of inattention or hyperactivity. Eye-tracking and physiological sensors reveal attention levels during online activities. Though offline classrooms allow direct interaction, these techniques enable timely interventions, enhancing ADHD students' experiences in the digital learning era. Further research to refine and address challenges will contribute to a more inclusive and effective online learning environment
Heat transfer through a condensate droplet on hydrophobic and nanostructured superhydrophobic surfaces
No full textUnderstanding the fundamental mechanisms governing vapor condensation on non-wetting surfaces is crucial to a wide range of energy and water applications. In this thesis, we reconcile classical droplet growth modeling barriers by utilizing two-dimensional axisymmetric numerical simulations to study individual droplet heat transfer on non-wetting surfaces (90° < θ_a < 170°). Incorporation of an appropriate convective boundary condition at the liquid vapor interface reveals that the majority of heat transfer occurs at the three phase contact line, where the local heat flux can be up to 4 orders of magnitude higher than at the droplet top. Droplet distribution theory is incorporated to show that previous modeling approaches under predict the overall heat transfer by as much as 300% for dropwise and jumping-droplet condensation. To verify our simulation results, we study condensed water droplet growth using optical and ESEM microscopy on bi-philic samples consisting of hydrophobic and nanostructured superhydrophobic regions, showing excellent agreement with the simulations for both constant base area and constant contact angle growth regimes. Our results demonstrate the importance of resolving local heat transfer effects for the fundamental understanding and high fidelity modeling of phase change heat transfer on non-wetting surfaces.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-05-01The student, Shreyas Chavan, accepted the attached license on 2016-04-25 at 17:05.The student, Shreyas Chavan, submitted this Thesis for approval on 2016-04-25 at 17:16.This Thesis was approved for publication on 2016-04-27 at 09:11.DSpace SAF Submission Ingestion Package generated from Vireo submission #9489 on 2016-07-07 at 13:50:52Made available in DSpace on 2016-07-07T20:35:15Z (GMT). No. of bitstreams: 2
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Previous issue date: 2016-04-27Embargo set by: Seth Robbins for item 93182
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Overcoming barriers to community participation in drug dependence treatment: An ethnography approach
No full textIntroduction: Substance use and dependence has been a part of Indian society for centuries. However, abuse of more hazardous drugs including intravenous use, younger age of initiation, and high prevalence has made it a major public health issue. Community-based interventions for drug/alcohol use are often hindered by a lack of community participation, which is the result of stigma associated with drug/alcohol use and its treatment. We describe our attempt to address this issue of lack of community participation in a particular community of Dhanas, Chandigarh, using an ethnography approach. Methodology: Despite drug/alcohol use being rampant in their community, the leaders of the community (Sarpanch and Medical Officer of Primary Health Centre) not only denied the problem, but also refused to support community outreach team. In the absence of facilitation by community leaders and prevalent stigma, drug/alcohol users from the Dhanas village did not seek treatment even when the treatment was offered close to their homes. Using an ethnography approach, a 6 point questionnaire was developed to investigate the severity of the problem as well as to engage the community leaders in the delivery of community-based treatment. Results: The questionnaire highlighted that key leaders chose to deny existing drug/alcohol problem whereas those who were aware of the problem did not have a say in the decision-making process. The questionnaire facilitated a thorough understanding of the sociocultural and political ethos of the community which in turn helped in chalking out an action plan in this village. Conclusion: With the help of various individuals such as former and current healthcare workers, community leaders, drug users, and their family members, the community outreach team successfully mobilized the community from denial to activism. This was evident in the number of individuals seeking treatment for drug/alcohol use that showed an increasing trend over the months
Phase change phenomena on water repelling and biphilic surfaces
No full textThis Dissertation was approved for publication on 2019-04-10 at 09:54.Water-repelling surfaces have been studied for many decades. Hydrophobic and superhydrophobic surfaces are beneficial in phase change heat transfer applications, specifically during condensation because of the enhanced heat transfer and during freezing because of the anti-freezing properties. The current study is focused on enhanced phase change phenomena on superhydrophobic and biphilic surfaces. Hydrophobic surfaces that enable dropwise condensation exhibit 5-10X higher heat transfer. Coalescence induced droplet jumping on superhydrophobic surfaces further increases the heat transfer by 30%. Here, biphilic surfaces consisting of hydrophilic spots on a superhydrophobic background are studied for enhanced condensation. Water droplets nucleating at the hydrophilic spots grow to sizes defined by the biphilic geometry, followed by coalescence and departure. A high fidelity model that captures departure dynamics during droplet jumping on biphilic surfaces and predict the overall condensation heat transfer has been developed. By controlling the spatial geometry and length scale of the hydrophilic spots, enhanced (10X) jumping-droplet condensation heat transfer is obtained.
In terms of freezing and frost formation, understanding the mechanisms of frost formation is essential to a variety of Heating, Ventilating, Air Conditioning and Refrigeration (HVAC&R) applications. When water vapor in the ambient condenses on a chilled substrate in the form of liquid water and then freezes, it is known as condensation frosting. The dominant mechanism governing the spread of condensation frosting is inter-droplet ice bridge frost wave propagation. When a subcooled condensate water droplet freezes on a hydrophobic or superhydrophobic surface, neighboring droplets still in the liquid phase begin to evaporate. The evaporated water molecules deposit on the frozen droplet and initiate the growth of ice bridges directed toward the water droplets being depleted. Neighboring liquid droplets freeze as soon as the ice bridge connects. In this study, the significance of individual droplet freezing on frost wave propagation is studied. 10X slower frost wave propagation speeds on superhydrophobic surfaces are observed. Furthermore, at larger length scales, during bulk freezing of water, it has been shown that superhydrophobic surfaces offer no delay in freezing.
Although frosting delay has been shown with superhydrophobic surfaces, complete elimination of frosting has not been achieved. Given enough time, frosting will initiate and spread to cover the entire surface. In the HVAC&R sectors, the most common approach to remove frost from a surface (defrost) is to reverse the system cycle direction and heat the working fluid. However, water retention on the heat exchanger surface during defrosting decreases the long term heat transfer performance. In this study, the defrosting behavior of superhydrophobic and biphilic surfaces comprising of spatially distinct superhydrophobic and hydrophilic domains is used to accelerate defrosting. During defrosting, biphilic surfaces are shown to exhibit enhanced surface cleaning with no water retention. Furthermore, an ultra-efficient method to defrost a surface covered with ice/frost by focusing energy at the substrate-ice interface is studied. To remove ice/frost efficiently, only the interfacial layer adhering the ice/frost to the solid surface is melted by using a localized ‘pulse’ of heat, allowing gravity or gas shear in conjunction with the ultra-thin lubricating melt water layer to remove the ice/frost. A high fidelity numerical model is developed to simulate pulse defrosting. This work not only provides a fundamental understanding of phase change processes on superhydrophobic and biphilic surfaces, but also elucidates its applications for a plethora of energy industries.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2021-05-01The student, Shreyas Chavan, accepted the attached license on 2019-04-09 at 16:13.The student, Shreyas Chavan, submitted this Dissertation for approval on 2019-04-09 at 16:16.DSpace SAF Submission Ingestion Package generated from Vireo submission #13540 on 2019-08-22 at 16:20:55Made available in DSpace on 2019-08-23T20:44:41Z (GMT). No. of bitstreams: 2
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ANALYSIS OF PUBLICATION PROFILE OF ACADEMIC LIBRARIANS IN MAHARASHTRA
No full textResearch has always been regarded as the most important intellectual activity in the higher education system; therefore this research article aims to provide a comprehensive picture of research productivity in symposia, seminars, conferences, journals, book chapters, research projects and patents carried out by various academic librarians during 2004 to 2013. A questionnaire was designed for data collection and the same was sent to the academic librarians by e-mail/in print. The results indicate that there were total 1325 research productivity in symposia, seminars, conferences, journals, book chapters, research projects and patents during the year 2004 to 2013. Highest 405 (30.57%) research papers published in conferences. Maximum 28.98% research publications appeared during the year 2013. Dr. S.P. Chavan was the most prolific author he has published 85 (6.41%) research papers. Librarian preferred English language to write research papers. Researchers communicated their research through variety of communication channels. The librarian mostly preferred to journals for communication channel. Highest 57 (74.03%) librarians have used single authorship pattern for their publications. Mostly 68 (88.31%) librarians have attending the workshops/symposia/seminars/conferences to acquire new skills, latest technology, update knowledge
Modified safe technique for circumcision
No full textWe have used surgical gauze under the prepuceal skin as a pack in 20 cases prior to marking incision for circumcision. The prepuceal adhesions were first dissected and seperated. The method allows a stable, well-supported prepuceal surface for marking incisions and avoids injuries to the glans. Because the prepuceal surface is taut and stable, hemostasis is easier and quicker and the operating time is reduced
An exploratory study assessing reasons behind initiation, continuation or stoppage of alcohol after first use
No full textObjective: Few studies have investigated the reasons for alcohol initiation and continuation. The present study examined reasons for trying alcohol for the first time and its subsequent use. Furthermore, the study attempted to discover the possible predictors that make an individual vulnerable to alcohol use. Methodology: A total of 280 first-year college students from six different colleges were contacted. Using the method of equal probability, every third subject from each class was selected. All the selected subjects were interviewed and administered semi-structured questionnaire for gathering information regarding their experience with alcohol. Results: In our study, experimentation and peer pressure were found to be the main reasons for both alcohol use and its re-use. The first time drinkers differed a lot from those with multiple users in terms of reasons for trying alcohol, the effect of alcohol, family history of alcohol use, and self-view about alcohol use. The results depicted that the gender, educational stream, and family history of alcohol use are the factors that make an individual vulnerable to alcohol use. Conclusion: First-year of college is a unique transitional period. First-year students with high levels of sensation seeking may be especially at high-risk to begin or escalate heavy drinking. Studying the nature of alcohol initiation may not only be helpful in planning awareness programs but also in preventing underage drinking and alcohol abuse
Modified safe technique for circumcision
No full textWe have used surgical gauze under the prepuceal skin as a pack in 20
cases prior to marking incision for circumcision. The prepuceal
adhesions were first dissected and seperated. The method allows a
stable, well-supported prepuceal surface for marking incisions and
avoids injuries to the glans. Because the prepuceal surface is taut and
stable, hemostasis is easier and quicker and the operating time is
reduced
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