244 research outputs found
Why do voters back corrupt and dishonest politicians? Interview with Milan Vaishnav
No full textA candidate with criminal allegations hanging over them will repel voters – or will they? Not necessarily. In India, a third of the MPs elected in 2014 faced an ongoing criminal case. Milan Vaishnav, the author of a new book about the nexus of crime and democracy in India, talks to Ros Taylor about the appeal of a strongman who can ‘get things done’, even if it means breaking the law – and considers whether some US voters share the same instincts
Determination of the complete stress-strain response of concrete under uniaxial compression
No full textThe characterization of the complete uniaxial compressive stress-strain curve of concrete is crucial for a more rational and reliable design of concrete structures. However, without intrinsic knowledge of the influence of different experimental control variables and the failure mechanisms of concrete, it is impossible to obtain a stable softening response in a test. This paper discusses the various aspects to be considered while performing the characterization, provides a comprehensive description of the different steps involved in the post-processing of the obtained experimental data. The influence of different test variables such as the type of contact, specimen size, rate of loading, the grade of concrete and fibre dosage on the compressive response is also elucidated. The complete stressstrain curves for different concretes have been obtained using the proposed procedure, which can serve as guidelines for such characterization. The brittleness of higher strength concrete is clearly manifested by a stress-strain curve that descends more sharply than those of conventional concretes. Further, it is seen that the incorporation of steel fibres mitigates the brittleness by improving the compressive toughness through bridging of the cracks and internal confinement.The authors thank M/s. L&T and Bekaert India for supporting this work by supplying some of the material used. Mr. S. Vaishnav Kumar and Mr. Soumen Sen collaborated in part of the work as MTech students at IIT Madras under the co-guidance of Mr. L. S. Kannan, Larsen & Toubro. The first author is thankful to the Ministry of Human Resource Development (MHRD), Government of India, for providing an assistantship during her doctoral studies. The FIST Grant SR/FST/ETII-054/2012 is gratefully acknowledged for the equipment in the Laboratory for Mechanical Performance of Civil Engineering Materials, IIT Madras. The authors declare that there is no conflict of interest in this work.Peer ReviewedPostprint (published version
Determination of the complete stress-strain response of concrete under uniaxial compression
No full textThe characterization of the complete uniaxial compressive stress-strain curve of concrete is crucial for a more rational and reliable design of concrete structures. However, without intrinsic knowledge of the influence of different experimental control variables and the failure mechanisms of concrete, it is impossible to obtain a stable softening response in a test. This paper discusses the various aspects to be considered while performing the characterization, provides a comprehensive description of the different steps involved in the post-processing of the obtained experimental data. The influence of different test variables such as the type of contact, specimen size, rate of loading, the grade of concrete and fibre dosage on the compressive response is also elucidated. The complete stressstrain curves for different concretes have been obtained using the proposed procedure, which can serve as guidelines for such characterization. The brittleness of higher strength concrete is clearly manifested by a stress-strain curve that descends more sharply than those of conventional concretes. Further, it is seen that the incorporation of steel fibres mitigates the brittleness by improving the compressive toughness through bridging of the cracks and internal confinement.The authors thank M/s. L&T and Bekaert India for supporting this work by supplying some of the material used. Mr. S. Vaishnav Kumar and Mr. Soumen Sen collaborated in part of the work as MTech students at IIT Madras under the co-guidance of Mr. L. S. Kannan, Larsen & Toubro. The first author is thankful to the Ministry of Human Resource Development (MHRD), Government of India, for providing an assistantship during her doctoral studies. The FIST Grant SR/FST/ETII-054/2012 is gratefully acknowledged for the equipment in the Laboratory for Mechanical Performance of Civil Engineering Materials, IIT Madras. The authors declare that there is no conflict of interest in this work.Peer ReviewedPostprint (published version
Love Wave Dispersion Relation in Reinforced and Inhomogeneous Anisotropic Medium
No full textThe dispersion relation of Love wave propagation in reinforced and inhomogeneous anisotropic medium has been derived in the present work. On Love wave's phase velocity, the effect of reinforced parameters and initial stress has been explained graphically. In particular cases, the standard dispersion relation of Love wave has been obtained in both the problems. This thesis entitled ``Love wave relation in reinforced and inhomogeneous anisotropic medium" is carried out for the study of propagation of Love wave in detail. The thesis contains three major chapters in addition to chapter Bibliography in end.
Chapter 1 deals with the introduction for the relevant problems. It gives the explanation of studies in the field of theoretical seismology. In Chapter 2, we considered a reinforced layer of finite thickness lying over inhomogeneous semi-infinite medium. For the displacement in the layer and half-space, we used separation of variable method(for solving second order partial differential equation i.e. governing equation of motion). The presence of reinforced parameters and heterogeneity in the obtained dispersion relation make a significance contribution in the study of Love wave propagation. For the validation of problem, we obtained standard Love wave dispersion relation in the particular cases. The significant effect of reinforced parameter and heterogeneity has been noticed in graphical section. This study plays an important role in the field of material science and mining engineering for searching minerals inside the earth.
In Chapter 3, Love wave propagation in an inhomogeneous anisotropic medium has been discussed. In this earth model, we take the inhomogeneous anisotropic superficial layer lying over initially stressed orthotropic semi-infinite medium. Love wave propagation direction is taken along x-direction. The displacement along y-direction has been obtained by solving second order P.D.E. with the help of separation of variable method. The effect of initial stress and heterogeneity parameter is obtained in graphical section. We also obtained the standard Love wave dispersion relation in particular cases. This study is useful for geologists and seismologists
Study of attitude and behaviour of healthcare professionals towards the patients in an Emergency Department during the COVID-19 pandemic
No full textBackground: COVID-19 outbreak is known to have a psychological impact on patients.
Background and Objective: The main aim of the study was a to study the attitude and behavior of health care professionals (HCPs) in the emergency department towards chronic patients during COVID-19 pandemic and also the accessibility of healthcare system during COVID-19 period and to compare it with the pre-COVID period.
Materials and Methods: A random sampling technique was used, and a pre-designed questionnaire named the Brief Emergency Department Patients' Satisfaction Scale was adopted to record the patient's satisfaction with the healthcare services.
Results: The patients admitted to the emergency ward felt that the nursing and physicians' care in the emergency department was highly satisfactory in the pre-COVID period. In the COVID period, the same set of patients who got admitted felt that there was a deterioration in the behaviour and attitude of the HCPs towards them. In the COVID period, 30% of the patients felt that there was a marked deterioration in the general services in the emergency department. It was also observed in the study, that there was a marked change in the attitude and behaviour of the HCPs in the emergency department at the time of the COVID pandemic.
Conclusion: COVID-19 has significantly changed the attitude and behaviour of HCPs. The disease has critically transformed the working environment and the approach of HCPs to treat the patients. It is imperative to employ productive strategies to care for the health of our HCP
Propagation of Torsional Surface Wave in Anisotropic Layer Between Two Half-Spaces
No full textAbstractThe present paper studies the possibility of propagation of torsional surface waves in an inhomogeneous anisotropic layer lying between two half-space. Upper half-space is considered as homogeneous as well as lower half-space is heterogeneous. Both the half-spaces are assumed to be under compressive initial stress. The study reveals that under the assumed conditions, a torsional surface wave propagates in the medium. The dispersion relation of torsional surface wave has been obtained in the presence of heterogeneity, initial stress and anisotropic, and it is observed that the inhomogeneity factor due to quadratic and hyperbolic variations in rigidity, density and initial stress of the medium decreases the phase velocity as it increases. The result also shows that the initial stresses have a pronounced influence on the propagation of torsional surface waves. In the absence of anisotropy, Initial stress, inhomogeneity and rigidity of the upper half-space, then the dispersion relation coincide with the classical dispersion relation of Love wave
Influence of external environment on early-age expansion characteristics of calcium sulfoaluminate cement-based binders
No full textCalcium sulfoaluminate (CSA) cements are widely being promoted as alternative low CO2 binders. CSA cements can also be expansive and designed to be shrinkage-compensating. The main phase of CSA cement is ye’elimite, which hydrates in the presence of calcium sulfate to form ettringite as the main hydration product. The availability of calcium sulfate can be used to control the hydration kinetics of ye’elimite, which affects the expansion characteristics of CSA cement. Sulfates in the form of gypsum or anhydrite are usually blended with CSA cement in the manufacturing stage. The presence of sulfates in the external environment also affects the expansion characteristics of CSA cement. This study aims to understand the effect of different exposure conditions on the expansion characteristics of CSA-based blended cement. The expansion of the specimens exposed to calcium sulfate solution was found to increase with the amount of calcium sulfate. The addition of CSA cement to Portland cement was found to have a significant influence on the early age expansion characteristics of the system, without affecting the mechanical properties such as compressive strength and dynamic modulus
Real-time applications of machine learning in cyber physical systems Advances in computational intelligence and robotics (ACIR) book series./ [edited by] Balamurugan Easwaran, Kamal Kant Hiran, Sangeetha Krishnan, and Ruchi Doshi.
No full textIncludes bibliographical references and index."This research book deals with real time applications of machine learning in cyber physical systems, for those who are working in the areas of machine learning approaches for CPS, the Internet of Things (IoT), and CPS and multidisciplinary applications of ML for CPS in the real world"--Real-time applications of machine learning in cyber physical systems / Balamurugan Easwaran, University of Africa, Toru-Orua, Nigeria Kamal Hiran, Sir Padampat Singhania University, India, Sangeetha Krishnan, University of Africa, Toru-Orua, Nigeria, Ruchi Doshi, Azteca University, Mexico -- Design of machine learning model for healthcare index during COVID-19 / Somya Choubey, Manipal University Jaipur, India, Vaibhav Bhatnagar, Manipal University Jaipur, India, Nishu Gupta, Manipal University Jaipur, India, Ity Patni, Manipal University Jaipur, India -- Cyber physical system threat modeling and analysis to track cyber criminal and terrorist activity on smart grid systems / Romil Rawat, Shri Vaishnav Vidyapeeth Vishwavidyalaya, India, Vinod Mahor, IPS College of Technology and Management, Gwalior, India, Shrikant Telang, Shri Vaishnav Vidyapeeth Vishwavidyalaya, India, Anil Kumar, Government Engineering College,Bharatpur, Rajasthan,India, Kiran Pachlasiya, NRI institute of Science and Technology, Bhopal, India, Mukesh Chouhan, Government Polytechnic College, Sheopur (M P), India.1 online resource (xxv, 307 pages)
Content Analysis Based on Literature Review on Human Orientation in Libraries
No full textThis paper discusses the value of literature reviews in Human orientation in libraries and its content analysis to assess the quality of the literature reviewed. The review of 92 literature reviews in four subfields of Human orientation in libraries that were published in English, right from the emergence of the subject in different nomenclature were included for the content analysis. Each source was evaluated on the basis of subject, year of publication, geographical area of research, type of publication, and methodology covered in the study. The Author found that, most researchers have utilized mixed method or qualitative method to get qualitative data for researching human orientation issues. Also, the effect of library architecture on students’ use of the actual library as it relates to human orientation is not well-documented by systematic, empirical investigations
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