Universality of the collapse transition of sticky polymers

The universality of the swelling of the radius of gyration of a homopolymer relative to its value in the $\theta$ state, independent of polymer-solvent chemistry, in the crossover regime between $\theta$ and athermal solvent conditions, is well known. Here we study, by Brownian dynamics, a polymer model where a subset of monomers is labelled as "stickers". The mutual interaction of the stickers is more attractive than those of the other ("backbone") monomers, and has the additional important characteristic of "functionality" $\varphi$, i.e., the maximum number of stickers that can locally bind to a given sticker. A saturated bond formed in this manner remains bound until it breaks due to thermal fluctuations, a requirement which can be viewed as an additional Boolean degree of freedom that describes the bonding. This, in turn, makes the question of the order of the collapse transition a non-trivial one. Nevertheless, for the parameters that we have studied (in particular, $\varphi=1$), we find a standard second-order $\theta$ collapse, using a renormalised solvent quality parameter that takes into account the increased average attraction due to the presence of stickers. We examine the swelling of the radius of gyration of such a sticky polymer relative to its value in the altered $\theta$ state, using a novel potential to model the various excluded volume interactions that occur between the monomers on the chain. We find that the swelling of such sticky polymers is identical to the universal swelling of homopolymers in the thermal crossover regime. Additionally, for our model, the Kuhn segment length under $\theta$ conditions is found to be the same for chains with and without stickers.Comment: 13 pages, 10 figures, supplementary material (see ancillary directory), to appear in Soft Matte

Stability of a three species ecological system consisting of prey- predator species and a third species which is a host to the prey and enemy to the predator

Prey-Predator ecological system was presented by Lotka and Volterra in their classical model. Inspired by that, several researchers made significant contributions in this area by considering various special types of interactions between the prey and the predator. This has been the motivation for others in bringing a third species into the system thus forming a three species ecological system. Recently, some researchers worked on this three species system by considering interactions like Prey-Predator, Commensal -Host, Ammensal-Enemy, between the three species, which motivated the present paper. In this paper we discussed a three species ecological system consisting of a Prey (S1), a Predator (S2) and a third species (S3) which is a host to the prey and enemy to the predator.  Hence the prey plays Commensal for the third species and the predator plays Ammensal for the same. The mathematical model consists of three equations which constitute a set of three first order non-linear simultaneous differential equations in N1, N2 and N3, which are respective populations of the species S1, S2 and S3.The Equation for the third species is non-linear but decoupled with the prey-predator pair. Totally, eight equilibrium points of the model are identified and the criteria for their local stability are discussed. Solutions for the linearized perturbed equations are found and the results are illustrated.&nbsp

Luminance-Chrominance-Gradient Based Technique for High Dynamic Range Image Fusion

604-607The High Dynamic Range (HDR) technique involves capturing the same scene multiple times with different exposure values and produces an output image with more dynamic range. Instead of doing all processing in RGB color space, we proposed to do it in Luminance Chrominance Gradient colour space, which results the output images to be more natural and pleasant to perceive with less noise. This experiment was evaluated and analysed with BAR and AEE1 methods and the results are compared. We showed that, our LCGHDR method is computationally efficient and able to remove any colour distortions originated from the RGB color channel

An overview of deep learning based methods for unsupervised and semi-supervised anomaly detection in videos

Videos represent the primary source of information for surveillance applications and are available in large amounts but in most cases contain little or no annotation for supervised learning. This article reviews the state-of-the-art deep learning based methods for video anomaly detection and categorizes them based on the type of model and criteria of detection. We also perform simple studies to understand the different approaches and provide the criteria of evaluation for spatio-temporal anomaly detection.Comment: 15 pages, double colum

Navya3DSeg -- Navya 3D Semantic Segmentation Dataset & split generation for autonomous vehicles

Autonomous driving (AD) perception today relies heavily on deep learning based architectures requiring large scale annotated datasets with their associated costs for curation and annotation. The 3D semantic data are useful for core perception tasks such as obstacle detection and ego-vehicle localization. We propose a new dataset, Navya 3D Segmentation (Navya3DSeg), with a diverse label space corresponding to a large scale production grade operational domain, including rural, urban, industrial sites and universities from 13 countries. It contains 23 labeled sequences and 25 supplementary sequences without labels, designed to explore self-supervised and semi-supervised semantic segmentation benchmarks on point clouds. We also propose a novel method for sequential dataset split generation based on iterative multi-label stratification, and demonstrated to achieve a +1.2% mIoU improvement over the original split proposed by SemanticKITTI dataset. A complete benchmark for semantic segmentation task was performed, with state of the art methods. Finally, we demonstrate an active learning (AL) based dataset distillation framework. We introduce a novel heuristic-free sampling method called distance sampling in the context of AL. A detailed presentation on the dataset is available at https://www.youtube.com/watch?v=5m6ALIs-s20 .Comment: Submitted to RA-L. Version with supplementary material

PROPOSE AND EXPLORATION OF AERO FIN BLADES IN CARGO AERO PLANE

The aeroplanes are designed for masses uses on our nature, the majority realizes aero planes are used for passenger capabilities simplest, however simplest 1/3 rd of the percentage only the aero planes are used for the visiting of mankind, but, maximum of the shipment flights run every day. Even there are numerous kinds of aero planes. These are even called by many names in conjunction with jets, flights, powered flights, navy flights and lots of others. As in case you see the aero planes fly with the help of horizontal and vertical wings. The fin is a prime ground of the Aerospace car. It is used to ensure the stability whilst its miles subjected to aerodynamic forces. In big, this fin used to move the auto in special hints with extremely good substances aluminum 7075, boron and glass fiber. The static and modal analysis is completed to estimate deflections, stresses & natural frequencies. The wings are the maximum essential enhance- generating a part of the aircraft. The design of wings also can furthermore range progressively with the form of plane and its cause. Three-D version is finished in CREO and assessment had been finished in ANSYS