451 research outputs found
FASTCUDA: Open Source FPGA Accelerator & Hardware-Software Codesign Toolset for CUDA Kernels
No full textUsing FPGAs as hardware accelerators that communicate with a central CPU is becoming a common practice in the embedded design world but there is no standard methodology and toolset to facilitate this path yet. On the other hand, languages such as CUDA and OpenCL provide standard development environments for Graphical Processing Unit (GPU) programming. FASTCUDA is a platform that provides the necessary software toolset, hardware architecture, and design methodology to efficiently adapt the CUDA approach into a new FPGA design flow. With FASTCUDA, the CUDA kernels of a CUDA-based application are partitioned into two groups with minimal user intervention: those that are compiled and executed in parallel software, and those that are synthesized and implemented in hardware. A modern low power FPGA can provide the processing power (via numerous embedded micro-CPUs) and the logic capacity for both the software and hardware implementations of the CUDA kernels. This paper describes the system requirements and the architectural decisions behind the FASTCUDA approach
3-D laser doppler velocimeter measurements of eccentric annular and labyrinth seals
No full textDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Includes bibliographical references.A 3-D laser doppler velocimeter was used to measure the flow field inside a whirling annular and labyrinth seal. The data was collected and phase averaged with the seals operating at a Reynolds number of 24,000 and a Taylor number of 6,600. The annular seal has an outside diameter of 164 mm, is 37.3 mm long and has a clearance of 1.27 mm. The labyrinth seal was of a straight through design with seven cavities. The seal has an outer diameter of 164 mm, is 33.5 mm long and has a clearance of 1.27 mm. The eccentricity ratios of the annular and labyrinth seals were 0.10 and 0.50 respectively. The whirl ratio for both seals were 1.00. For both seals the maximum axial velocity is not located at the maximum clearance over the length of the seals as would be expected. Instead the maximum a)axial velocities are seen on the pressure side of the seals at the inlet but migrates to the suction side of the seal at the exit. The magnitude of this migration is dependent upon the seal eccentricity. The labyrinth seal exhibits an axial recirculation zone at the seal inlet due to its larger eccentricity. The radial velocity profiles are generally dependent on the seal eccentricity as well. Tangential velocities are seen to develop in inverse proportion to the axial velocity. For the annular seal the flow exhibits an uniform tangential velocity distribution by a location of ZAL = 0.10. The labyrinth seal displays a similarly uniform distribution for the tangential component by the third cavity(Z/L = 0.36). The exit magnitudes of the azimuthal velocity is about 0.4WSh indicating that the azimuthal velocity is not significantly altered by altering the whirl ratio. Turbulence generation is dominant over the first third of the seal after which there is a sharp decrease in the turbulence levels
Opinions and attitudes of postgraduates towards suicide attempts in a rural tertiary medical college of India
No full textBackground: Suicide, commonly defined as “an act of self-destruction, initiated and committed by a person who is aware of the fatal outcome and has substantial socioeconomic and cultural influences. The current suicide rate in India is 10.6/100,000 population. Doctors play an active part in the treatment and prevention of patients with suicide attempts, and their therapeutic endeavors may interrupt the ongoing suicidal process. The aims and objectives of this study were to assess the Opinions and Attitudes of the postgraduates of the various clinical departments towards suicide and to find out for any differences among postgraduates of Surgical and Medical groups who manage the consequences of the chosen methods of the suicidal attempts of the patients. Postgraduates of psychiatry were not included. Materials and Methods: It was a cross-sectional study done on various nonpsychiatric postgraduates between October and November 2019 in R L Jalappa Hospital, a constituent unit of Sri Devaraj Urs Academy of Higher Education and Research, who are assessed using structured and validated instruments, the Suicide Opinion Questionnaire, and Attitudes to Suicide Prevention Scale. Results: The majority of both the Surgical and allied science groups with the Medicine and allied science group nonpsychiatric postgraduates had a negative disposition towards suicide attempters and negative attitudes towards suicide prevention strategies and there was no statistical difference among them. Conclusion: There must be training for non-psychiatric specialists towards suicide regularly and change in their respective PG training curriculum towards the approach of patients with self-injurious behaviors
Has Bollywood exposed Indians to mental health issues? – a critical study
No full textThe year 2020 exposed the world to the COVID-19 Pandemic. People were locked inside their homes and everything went online, from education to entertainment. In 2018, renowned Hindi film actress Deepika Padukone expressly spoke about mental health issues. This led to a widespread debate among Indians as to mental health problems. But with the death of actor Sushant Singh Rajput, Indians felt the problem was their own. This made them feel the problems and companies started offering psychological counseling to their employees on regular basis. Especially during COVID-19, it was reported that continuously using online mediums led to mental health problems not only among youth but also among adults. Against this backdrop, through the present article, the author attempts to highlight the problem of mental health, and the various steps taken for mental health, both at the international and national levels. Also, the author discuss the salient features of the Mental Health Care Act, 2017 and the various challenges in delivering mental health care, finally concluding with suggestions and recommendations
Book review: the reflective teacher - case studies of action research
No full textThe author, Neeraja Raghavan, has for several years now pursued her passion for education and has done extensive work in teaching children and in teacher education. In this, her latest, book, she has systematically captured all the experiences and learnings that emerged during the five months (August-December 2013) of action research taken up by eight teachers and the Principal of Azim Premji School in Dineshpur, Uttarakhand. As principal investigator, she anchored this action research project, which was facilitated by members from Azim Premji Foundation
Low complexity scheduling algorithms minimizing the energy for tasks with agreeable deadlines
No full textInternational audiencePower management aims in reducing the energy consumed by computer systems while maintaining a good level of performance. One of the mechanisms used to save energy is the shut-down mechanism which puts the system into a sleep state when it is idle. No energy is consumed in this state, but a fixed amount of energy is required for a transition from the sleep state to the active state which is equal to L times the energy required for the execution of a unit-time task. In this paper, we focus on the off-line version of this problem where a set of unit-time tasks with release dates and deadlines have to be scheduled in order to minimize the overall consumed energy during the idle periods of the schedule. Here we focus on the case where the tasks have agreeable deadlines. For the single processor case, an O (n3) algorithm has been proposed in Gururaj et al. (2010) for unit-time tasks and arbitrary L. We improve this result by introducing a new O (n2) polynomial-time algorithm for tasks with arbitrary processing times and arbitrary L. For the multiprocessor case we also improve the complexity from O (n3 m2) Gururaj et al. (2010) to O (n2 m) in the case of unit-time tasks and unit L
A Scientometric Analysis and Visualization Mapping of Convalescent Plasma Therapy
No full textThis paper deals with the scientometric analysis of the scholarly literature on Convalescent Plasma Therapy, or simply Plasma Therapy, indexed in the SCOPUS database from its first publication to 2020. In this study, 1,722 bibliographic records were analysed, published in 545 journals by 9491 authors from 6046 organizations located in nearly 175 countries. The results showed a sudden increase in the number of publications in 2020 because of the clinical trials due to the COVID-19 pandemic. During the period, an inconsistent trend of publications and the annual growth rate is observed. The average Degree of Collaboration calculated for the overall period was 0.89, and Collaboration Index was 6.83. Pediatric Nephrology and Transfusion were the most preferred journals; Chantal Loirat was the most productive author in the field. The AP-HP Assistance Publique - Hopitaux de Paris, France, was the top productive institution, and the USA was the most productive country in terms of the number of publications
ECHAM5-HAM precipitation and aerosol optical depth data
No full text<p><strong>Introduction:</strong></p>
<p>These files contain data from ECHAM5.5-HAM2.0 model simulations. The Sundqvist stratiform cloud cover scheme has been used. The simulations are described in Grandey et al. (2013; doi:10.5194/acp-13-3177-2013) and Grandey et al. (2014; doi:10.1002/2014GL060958). These data are analysed in Grandey et al. (2014; 10.1002/2014GL060958).</p>
<p><strong>File size warning:</strong></p>
<p>These files are relatively large.</p>
<p><strong>File format:</strong></p>
<p>.nc is the extension for NetCDF format, a binary data format commonly used for climate model output data. These NetCDF files contain metadata which aid interpretation of the contents. The metadata and data can be explored using the free Panoply software tool (http://www.giss.nasa.gov/tools/panoply/ [28-Aug-2015]). </p>
<p><strong>File naming convention:</strong></p>
<p>- HAM_B011 refers to the control simulation.</p>
<p>- HAM_B013 refers to the NoConvScav simulation, in which wet scavenging by convective precipitation has been turned off.</p>
<p>- *_apr_*.nc contain precipitation data.</p>
<p>- *_aod_*.nc contain aerosol optical depth data.</p>
<p>- *_aoddry_* contain dry aerosol optical depth data.</p>
<p><strong>Contributions and acknowledgments:</strong></p>
<p>Philip Stier and Till M. Wagner contributed to the experimental design. P.S. contributed to the configuration of ECHAM5-HAM. P.S., T.M.W. and Anisha Gururaj contributed towards the analysis in Grandey et al. (2014). The simulations were performed while B.S.G. was supported by a UK Natural Environment Research Council (NERC) DPhil studentship. The analysis was performed while B.S.G. was funded by the Singapore National Research Foundation (NRF) through the Singapore-MIT Alliance for Research and Technology (SMART) Center for Environmental Sensing and Modeling (CENSAM).</p>
<p><strong>Paper reference for further details:</strong></p>
<p>Grandey, B. S., A. Gururaj, P. Stier and T. M. Wagner (2014), Rainfall-aerosol relationships explained by wet scavenging and humidity, <em>Geophysical Research Letters</em>, doi:10.1002/2014GL060958</p
Evaluation Of Photobioreactors for Growth and Metabolites Production from Red Microalga – Porphyridium
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
ATR MEDIATED REGULATION OF CELLULAR AND NUCLEAR PLASTICITY
No full textProtein kinase ATR (Ataxia Telangiectasia and Rad3-related) is a key regulator of genomic integrity. In addition to its vital, well-understood role in maintaining replication fork stability, ATR is also involved in mediating mechanical stress response at the nuclear envelope preventing potential threats to the genome. Our data from sub-cellular distribution and interactome analysis of ATR suggests that ATR contributes to several cellular processes in multiple organelles such as mitochondria, actin cytoskeleton, Golgi and nuclear envelope. At the nuclear envelope ATR is present on both inner and outer nuclear membranes, on the nuclear pores and bound to perinuclear chromatin and to perinuclear actin fibers. In this study we show that ATR regulates nuclear membrane integrity by maintaining nuclear morphology and optimal membrane tension, by counteracting mechanical force imbalances at the NE and by coordinating nuclear events with nuclear and cell migration. We report a novel role of ATR in preventing and protecting nuclear envelope damage and DNA damage caused by mechanical constrains acting on the nucleus. Further we show that by maintaining nuclear envelope integrity ATR facilitates cell migration on 2D surfaces and by regulating nuclear membrane components and by limiting nuclear envelope damage it aids cell survival during confined 3D migrations. Loss of ATR dampens neuronal migration during development and cancer cells lacking ATR are inefficient in extravasation, do not survive circulation and fail to successfully metastasize into the host environment. Therefore, by promoting cell survival in altering mechanical microenvironment and during metastasis and invasion, ATR assists tumor development, suggesting a dual role for this kinase in tumorigenisi
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