A5028415358- Cosmology and Gravitation Theories
- Face recognition and analysis
- Face and Expression Recognition
- Intraperitoneal and Appendiceal Malignancies
- Galaxies: Formation, Evolution, Phenomena
- Biometric Identification and Security
- Ovarian cancer diagnosis and treatment
- Appendicitis Diagnosis and Management
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- User Authentication and Security Systems
- Adversarial Robustness in Machine Learning
- Advanced Image and Video Retrieval Techniques
- Endometriosis Research and Treatment
- Solar and Space Plasma Dynamics
- Particle physics theoretical and experimental studies
- Domain Adaptation and Few-Shot Learning
- Oral health in cancer treatment
- Face Recognition and Perception
- Head and Neck Cancer Studies
- Geophysics and Gravity Measurements
- Spam and Phishing Detection
- Advanced Malware Detection Techniques
- Organ Transplantation Techniques and Outcomes
- Renal Transplantation Outcomes and Treatments
Cadila Healthcare (India)
2019-2025
Ahmedabad University
2015-2024
Mahatma Gandhi University
2024
Netaji Subhas University of Technology
2023
Thieme Medical Publishers (Germany)
2022
Apex Heart Institute
2020
Indraprastha Institute of Information Technology Delhi
2012-2019
Indian Institute of Technology Delhi
2012-2019
Physical Research Laboratory
2015-2016
Indian Institute of Technology Kanpur
2016
Coronavirus disease (COVID-19) causes an immunosuppressed state and increases risk of secondary infections like mucormycosis. We evaluated clinical features, predisposing factors, diagnosis outcomes for mucormycosis among patients with COVID-19 infection. This prospective, observational, multi-centre study included 47 consecutive mucormycosis, diagnosed during their course illness, between January 3 March 27, 2021. Data regarding demography, underlying medical conditions, illness treatment...
Deep neural network (DNN) architecture based models have high expressive power and learning capacity. However, they are essentially a black box method since it is not easy to mathematically formulate the functions that learned within its many layers of representation. Realizing this, researchers started design methods exploit drawbacks deep algorithms questioning their robustness exposing singularities. In this paper, we attempt unravel three aspects related DNNs for face recognition: (i)...
Face recognition algorithms generally use 2D images for feature extraction and matching. In order to achieve better performance, 3D faces captured via specialized acquisition methods have been used develop improved algorithms. While such remain difficult obtain due several issues as cost accessibility, RGB-D by low sensors (e.g. Kinect) are comparatively easier acquire. This research introduces a novel face algorithm images. The proposed computes descriptor based on the entropy of along with...
Face recognition algorithms generally utilize 2D images for feature extraction and matching. To achieve higher resilience toward covariates, such as expression, illumination, pose, 3D face are developed. While it is challenging to use specialized sensors due high cost, RGB-D can be captured by low-cost Kinect. This research introduces a novel algorithm using images. The proposed computes descriptor based on the entropy of faces along with saliency obtained from face. Geometric facial...
Warm inflation has been noted previously as a possible way to implement inflationary models compatible with the dS swampland bounds. But often in these discussions, heat bath dynamics are kept largely unspecified. We point out that recently introduced minimal warm [K. V. Berghaus, P. W. Graham, and D. E. Kaplan, J. Cosmol. Astropart. Phys. 03 (2020) 034], where an axionic coupling of inflaton leads explicit model for thermal bath, yields can easily fit cosmological observations while...
Abstract It is well-known that Dark Matter (DM) inside a satellite galaxy orbiting host halo experiences tidal potential. If DM ultra-light, given its wave-like nature, one expects it to tunnel out of the — if this happens sufficiently quickly, then will not survive over cosmological timescales, severely constraining dark matter model. In paper, we study effects inevitable quartic self-interaction scalar Ultra-Light (ULDM) on lifetimes galaxies by looking for quasi-stationary solutions with...
The recent observation of the 750 GeV diphoton excess at 13 TeV LHC has motivated many scenarios physics beyond standard model. In this work, we begin by showing that models which explain observed tend to get strongly coupled well below Planck scale. We then study a simple scenario involving colored vectorlike fermions with exotic charges, is expected stay weakly till find conditions under happens, derive renormalization group equations for such and solve them show perturbativity scale can...
Sketch recognition has important law enforcement applications in detecting and apprehending suspects. Compared to hand drawn sketches, software generated composite sketches are faster create require lesser skill sets as well bring consistency sketch generation. While generation is one side of the problem, recognizing with digital images another side. This paper presents an algorithm address second i.e. matching images. The proposed utilizes a SSD based dictionary via 50,000 from CMU...
Videos have ample amount of information in the form frames that can be utilized for feature extraction and matching. However, face images not all are "memorable" useful. Therefore, utilizing available a video recognition does necessarily improve performance but significantly increases computation time. In this research, we present memorability based frame selection algorithm enables automatic memorable facial A deep learning is then proposed utilizes stack denoising autoencoders Boltzmann...
Abundance and availability of video capture devices, such as mobile phones surveillance cameras, have instigated research in face recognition, which is highly pertinent law enforcement applications. While the current approaches reported high accuracies at equal error rates, performance lower false accept rates requires significant improvement. In this paper, we propose a novel verification algorithm, starts with selecting feature-rich frames from sequence using discrete wavelet transform...
Abstract One of the most important unanswered questions in cosmology is concerning fundamental nature dark matter (DM). DM could consist spinless particles very small mass i.e. m ∼ 10 -22 eV. This kind ultralight (ULDM) would form cored density profiles (called “solitons”) at centres galaxies. In this context, recently it has been argued that (a) there exists a power law relation between soliton and surrounding halo called Soliton-Halo (SH) relation, and, (b) requirement satisfying observed...
We revisit the constraints that Planck 2015 temperature, polarization and lensing data impose on parameters of warm inflation. To this end, we study inflation driven by a single scalar field with quartic self interaction potential in weak dissipative regime. analyse effect inflation, namely, inflaton coupling λ dissipation parameter QP CMB angular power spectrum. constrain for 50 60 number e-foldings full (TT, TE, EE + lowP lensing) performing Markov-Chain Monte Carlo analysis using publicly...
The recently proposed Trans-Planckian Censorship Conjecture (TCC) can be used to constrain the energy scale of inflation. conclusions however depend on assumptions about post-inflationary history Universe. E.g. in standard case a thermal which Universe stays radiation dominated at all times from end inflation epoch matter equality, TCC has been argue that Hubble parameter during inflation, $H_{\inf}$, is below ${\cal O}(0.1) ~{\rm GeV}$. Cosmological scenarios with non-thermal are...
Dieulafoy’s lesion is a developmental vascular malformation of the gastrointestinal (GI) tract. It relatively uncommon cause life-threatening GI bleeding from dilated and tortuous submucosal artery in absence mucosal ulcers or erosions. With proactive use endoscopy-guided intervention, mortality condition can be reduced. In endoscopically negative cases, imaging plays pivotal role diagnosing it, which then treated by endovascular embolization. We report case middle-aged female who presented...
It has been shown that gravitational waves propagate through ideal fluids without experiencing any dispersion or dissipation. However, if the medium a non-zero shear viscosity $\eta$ , will be dissipated at rate proportional to $G \,\eta$. We constrain dark matter and energy models with by calculating dissipation of from GW150914 which over distance $410\, $ Mpc dissipative fluid comparing data theoretical prediction. This provides proof-of-principle demonstration fact future observations...
It is well known that Ultra-Light Dark Matter (ULDM), usually scalar fields of mass $m \sim 10^{-22}~{\rm eV}$, can solve some the outstanding problems Cold (CDM) paradigm. Such a field could have non-negligible self-coupling $\lambda$. In this work, using observational upper limit on amount centrally concentrated dark matter in galaxy, we arrive at constraints $\lambda - m$ (self coupling $-$ mass) parameter space. found $m$ ULDM depends upon sign and strength self-interactions. We...
Abstract Aim The peritoneal cancer index (PCI) is one of the strongest prognostic factors in patients undergoing cytoreductive surgery (CRS) for colorectal metastases. Using pathological evaluation, however, disease extent differs a large proportion patients. Our aim was to study correlation between radiological (rPCI), surgical (sPCI) and (pPCI) PCI order determine affecting discordance these indices their potential therapeutic implications. Method From July 2018 December 2019, 128 were...
A Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) is designed distinguish humans from machines. Most of the existing tests require reading distorted text embedded in a background image. However, many CAPTCHAs are either too difficult for due excessive distortions or trivial automated algorithms solve. These also suffer inherent language as well alphabet dependencies not equally convenient people different demographics. Therefore, there need devise other...