Miracle-dz/UniFAR-FTUs huggingface dataset:
Fast Retinomorphic Event-Driven Representations for Video Gameplay and Action Recognition

Good temporal representations are crucial for video understanding, and the state-of-the-art video recognition framework is based on two-stream networks. In such framework, besides the regular ConvNets responsible for RGB frame inputs, a second network is introduced to handle the temporal representation, usually the optical flow (OF). However, OF or other task-oriented flow is computationally costly, and is thus typically pre-computed. Critically, this prevents the two-stream approach from being applied to reinforcement learning (RL) applications such as video game playing, where the next state depends on current state and action choices. Inspired by the early vision systems of mammals and insects, we propose a fast event-driven representation (EDR) that models several major properties of early retinal circuits: (1) logarithmic input response, (2) multi-timescale temporal smoothing to filter noise, and (3) bipolar (ON/OFF) pathways for primitive event detection. Trading off the directional information for fast speed ($>$9000 fps), EDR enables fast real-time inference/learning in video applications that require interaction between an agent and the world such as game-playing, virtual robotics, and domain adaptation. In this vein, we use EDR to demonstrate performance improvements over state-of-the-art reinforcement learning algorithms for Atari games, something that has not been possible with pre-computed OF. Moreover, with UCF-101 video action recognition experiments, we show that EDR performs near state-of-the-art in accuracy while achieving a 1,500x speedup in input representation processing, as compared to optical flow.
Epidemiological study of road traffic accident cases visiting emergency department of Osmania general hospital, Hyderabad, Telangana, India

Background: World Health Organization defines road traffic injury (RTI) as a fatal or nonfatal injury incurred as a result of a collision on a public road involving at least one moving vehicle and pedestrians. Accident has been defined as an unexpected, unplanned occurrence, which involves injury. Road accident is treated as a major epidemic of non-communicable disease in the present century. The objective of the study was to know the various epidemiological factors related to road traffic accident cases. Methods: This study was conducted at Osmania General Hospital, Hyderabad, Telangana, South India from 1 st January to 31 st December 2013. The study group-consisted of all the RTA victims reporting to casualty in the above one year period. Results: A total of 1158 RTA cases reported at Osmania General Hospital during study period. Out of 1158 RTA cases 1026 (88.6%) of the victims were males & rest 132 (11.4%) were female. The highest number of victims 601(51.8%) were from 16 – 30 years of age group. Followed by 291 (25.1%) in the age group 31 – 45 years. Motorized two-wheeler occupants were highest in number i.e. 898 (77.5%) followed by occupants of four wheelers 147 (12.6%). Pedestrians involved were 82 (7%). Being knocked down was the common mode of RTA, involving 502 victims (43.3%), followed by falling off vehicles which claimed 241(20.8%) victims. Other modes were collision between two vehicles (18.8%), run over (5.9%) and due to overturning (7.0%). Interestingly 130 (11.2%) victims were injured due to the vehicle hitting a stationary object (parked vehicle). In the present study it was observed that time factor (to reach hospital) is very crucial for increase the chance of survival among RTA victims, death rate significantly low 7% among those who reached within 30minutes in comparison to those who took more time to reach the hospital. Majority (89%) did not use any safety measures. Only 3% used car seat belt and 8% wear helmet. The effect of alcohol was evident with 62% were consumed alcohol. Conclusion: It was found that greater portion of the RTA occurred due to collusion between two vehicles followed by defective road. A significant number of accidents took place during bad weather. More than half of the accidents occurred due to wrong side driving.
A Framework to Handle Multimodal Multiobjective Optimization in Decomposition-Based Evolutionary Algorithms

Multimodal multiobjective optimization is to locate (almost) equivalent Pareto optimal solutions as many as possible. While decomposition-based evolutionary algorithms have good performance for multiobjective optimization, they are likely to perform poorly for multimodal multiobjective optimization due to the lack of mechanisms to maintain the solution space diversity. To address this issue, this article proposes a framework to improve the performance of decomposition-based evolutionary algorithms for multimodal multiobjective optimization. Our framework is based on three operations: 1) assignment; 2) deletion; and 3) addition operations. One or more individuals can be assigned to the same subproblem to handle multiple equivalent solutions. In each iteration, a child is assigned to a subproblem based on its objective vector, i.e., its location in the objective space. The child is compared with its neighbors in the solution space assigned to the same subproblem. The performance of improved versions of six decomposition-based evolutionary algorithms by our framework is evaluated on various test problems regarding the number of objectives, decision variables, and equivalent Pareto optimal solution sets. Results show that the improved versions perform clearly better than their original algorithms.
Surgical Repair of Tibialis Anterior Tendon Rupture

Closed rupture of the tibialis anterior tendon is a relatively uncommon clinical phenomenon, and review of the literature reveals fewer than 150 reported cases. Even more limited are the reported treatment methods and repair techniques. The disruption of the tendon can occur as a result of traumatic or atraumatic rupture, and is often a missed diagnosis that presents late to the treating surgeon. Depending on the time since injury and condition of the tendon, the rupture may be repaired either primarily or through secondary repair with autogenous interpositional grafting. Regardless of age, sex, medical comorbidities, and diagnostic delay, both techniques have shown promising results. The repair of the ruptured tibialis anterior results in restoration of dorsiflexion strength, ankle cosmesis, and return of function. Depending on the patient’s functional deficit and desired level of activity, surgical repair is generally a safe and effective means to restore function, independent of injury acuity.
Subungual Osteochondroma or Exostosis Cartilaginea of the Hallux: A case report of recurrent bone tumor one year later

Osteochondroma is the most common benign bone tumor of the foot. This case describes a teenage girl who returns one year later with recurrent osteochondroma. The etiology, diagnosis and treatment options of this tumor are discussed. After initial excision, a revisional surgery was performed one year later that included more aggressive curettage of the recurrent osteochondroma with allogenic bone grafting using InterGro® DBM Plus.
Comparing the star formation history of three nearby disk galaxies

Abstract Understanding the effect of environment on galaxy formation and evolution is one of the hot topics in extragalactic astronomy. Here we constructed a chemical evolution model of disk galaxies. By comparing the model predictions with the observed profiles, we investigated the star formation history of M33, NGC 300 and NGC 2403. We found that M33 has much longer infall timescale than NGC 300 and NGC 2403, and the star formation process of M33 is still active at later phase. Our results suggested that the cold gas supply of M33 is sufficient in the present-day, which may originate from the HI bridge between M33 and M31. In other words, we argue that the local environment plays an important role on the star formation history of a galaxy, at least for M33.
A 100-m-Scale Modeling Study of a Gale Event on the Lee Side of a Long Narrow Mountain

In this study, a gale event that occurred on the lee side of a long narrow mountain was investigated, together with the associated mountain flows, using a realistic-case large-eddy simulation (LES) that is based on the Weather Research and Forecasting Model. The mountain is located on the southeastern Tibetan Plateau, where approximately 58 gales occur annually, mostly in the afternoons during the winter season. Benefitting from realistic topography and high horizontal resolution as fine as 111 m, the LES can replicate features similar to the wind fields observed during the gale period. Investigation of the early morning wind structure over the mountain revealed that weak inflows were blocked, reversed, and divided in the upstream area and that some weak lee waves, rotors, and two clear lee vortices were evident downstream. As the upstream wind accelerated and the boundary layer developed during the daytime, the lee waves became amplified with severe downslope wind and rotors. The interaction and coherent structure of the downslope wind, rotor, and vortices were investigated to show the severe wind distribution. The mountain drags associated with blocking and amplified lee waves are displayed to show the potential impact on the large-scale model. The linear lee-wave theory was adopted to explain the wave evolution during this event together with a discussion of the uncertainty around low-level nonlinear processes.
Multiple-point Modeling the Parker Spiral Configuration of the Solar Wind Magnetic Field at the Solar Maximum of Solar Cycle 24

By assuming that the solar wind flow is spherically symmetric and that the flow speed becomes constant beyond some critical distance r = R0 (neglecting solar gravitation and acceleration by high coronal temperature), the large-scale solar wind magnetic field lines are distorted into a Parker spiral configuration, which is usually simplified to an Archimedes spiral. Using magnetic field observations near Mercury, Venus, and Earth during solar maximum of Solar Cycle 24, we statistically surveyed the Parker spiral angles and obtained the empirical equations of the Archimedes and Parker spirals by fitting the multiple-point results. We found that the solar wind magnetic field configurations are slightly different during different years. Archimedes and Parker spiral configurations are quite different from each other within 1 au. Our results provide empirical Archimedes and Parker spiral equations that depend on the solar wind velocity and the critical distance (R0). It is inferred that R0 is much larger than that previously assumed. In the near future, the statistical survey of the near-Sun solar wind velocity by Parker Solar Probe can help verify this result.
Multi-stereo 3D reconstruction with a single-camera multi-mirror catadioptric system

Omnidirectional catadioptric systems are popular in many fields, such as robotics, surveillance, telepresence and virtual reality, thanks to their large field of view. For 3D scene reconstruction in a single shot, usually two different catadioptric cameras are needed. More cameras may contribute to better reconstruction while a larger mounting space and higher power cost are required. In this paper, a single camera multi-mirror catadioptric system with a vertical and horizontal baseline structure is proposed. It features the realization of multiple central or non-central omnidirectional stereo pairs in a compact manner. To make the 3D reconstruction process general and adaptive to various types of system configurations, a flexible calibration and reconstruction algorithm pipeline is presented. The algorithm features the approximation of the system into multiple central sub-cameras and carries out stereo matching in a spherical representation. In addition, an effective 3D point cloud fusion algorithm is proposed to optimize the reconstruction results from multiple stereo pairs. Experiments carried out with synthetic and real data verified the feasibility and effectiveness of our system. In particular, with the real data, when compared with the results of a single stereo pair, the fused reconstruction results of the multiple stereo pairs obtained 30% and 15% improvement corresponding to the planarity and angle error respectively.
Discrete maximal regularity for volterra equations and nonlocal time-stepping schemes

In this paper we investigate conditions for maximal regularity of Volterra equations defined on the Lebesgue space of sequences \begin{document}$ \ell_p(\mathbb{Z}) $\end{document} by using Blunck's theorem on the equivalence between operator-valued \begin{document}$ \ell_p $\end{document} -multipliers and the notion of \begin{document}$ R $\end{document} -boundedness. We show sufficient conditions for maximal \begin{document}$ \ell_p-\ell_q $\end{document} regularity of solutions of such problems solely in terms of the data. We also explain the significance of kernel sequences in the theory of viscoelasticity, establishing a new and surprising connection with schemes of approximation of fractional models.
Dual-Mode Compression of Dipole Antenna by Loading Electrically Small Loop Resonator

This communication presents a dual-mode dipole antenna for impedance bandwidth improvement. In our approach, an electrically small loop (ESL) resonator is properly loaded to compress the operating frequencies of first- and third-order modes. With the existence of ESL, the third-order mode shifts to its first-order mode to obtain a wide bandwidth with stable polarization and radiation patterns, due to the fact that ESL is equivalent to an orthogonal magnetic dipole at the third-order mode. To validate the design strategy, a prototype was fabricated and tested. Omnidirectional radiation pattern in H-plane is achieved over the entire operating band from 2.94 to 3.89 GHz while keeping a smaller size of $0.45\lambda _{0}\times 0.17\lambda _{0} (\lambda _{0}$ is the wavelength in free space at the center frequency). Good agreement has been obtained between measurement and simulation.
Analyzing the Quality Gapsin the Services of Rehabilitation Centers Using the SERVQUAL Technique in Ahvaz, Iran

Background: The SERVQUAL (service quality) technique is one of the best techniques to evaluate customers’ expectations and perceptions of the quality of the services they have received. Objectives: This study aimed to assess the quality gap in the services provided by rehabilitation centers in Iran using the SERVQUAL technique. Patients and Methods: This was a cross-sectional study conducted in Ahvaz, Iran. The study sample was composed of 255 patients randomly selected from 5 rehabilitation centers. The research data was collected using a valid questionnaire, consisting of 22 items and 5 dimensions of service quality. Results: Most of the patients included in this study were female (72.9%), and the mean age of the patients was 40 ± 13.2 years. The total mean scores of the patients’ expectations and perceptions were 3.73 (SD = 0.3) and 3.56 (SD = 0.5), respectively. According to the gap analysis, there was a negative quality gap in each of the five SERVQUAL dimensions, but in the assurance dimension, this gap was very low, and not found to be significant. The quality gap was more negative in the tangiblesfactor (-0.33) and reliability (-0.30) than in the other factors. Conclusions: There was a negative gap between the patients’ expectations and what they actually perceived in the studied rehabilitation centers (with the exception of one public clinic); therefore, improvements are needed across all five dimensions.
Regularity of solutions for a fourth‐order elliptic system via Conservation law

In this paper, we obtain interior Hölder continuity for solutions of the fourth‐order elliptic system Δ2u=Δ(V·∇u)+div(w∇u)+W·∇uformulated by Lamm and Rivière [Comm. Partial Differential Equations 33 (2008) 245–262]. Boundary continuity is also obtained under a standard Dirichlet or Navier boundary condition. We also use conservation law to establish a weak compactness result which generalizes a result of Rivière for the second‐order problem.
Systemic Manifestations and Comorbidities of Chronic Obstructive Pulmonary Disease

Systemic inflammation is associated with chronic obstructive pulmonary disease (COPD) and many other chronic diseases. It is increasingly recognized that individuals with COPD frequently have underlying comorbidities including cardiovascular disease, skeletal muscle dysfunction, depression and anxiety, obstructive sleep apnea, osteoporosis, gastroesophageal reflux disease, anemia, lung cancer, cognitive impairment, diabetes, renal insufficiency, and chronic infections. The link between systemic inflammation, COPD, and its common comorbidities is incompletely understood. However, persons with COPD and comorbidities have a reduced quality of life and functional status, utilize more health care resources, and are at higher risk of hospitalization and death. Screening for and treating comorbidities are important in the integrated care of the COPD patient and may have a substantial impact on morbidity and mortality.
Relationship between CYP1A1 polymorphism,serum selenium and lung cancer

Objective To study the correlation of polymorphism of CYP1A1Msp1 and seurm selenium level independently and in combination with the risk of lung cancer.Methods A case-control study was conducted,which included 58 cases of lung cancer and 62 controls.The genotypes of CYP1A1 were detected by PCR-RELP and the serum selenium level was determined by GHAFS.Results There was no significant difference in polymorphism frequencies of CYP1A1 MspI between the two groups.The genotypes were no significantly associated with the risk of lung cancer;Average serum level of selenium among the lung cancer cases was significantly lower than that among controls ( P =0.001);Comparing with those who had higher serum selenium(0.109 mg/L) with CYP1A1m\-1m\-1,the odds ratios of those who had lower serum selenium(0.109 mg/L) with CYP1A1m\-2m\-2,with CYP1A1m\-1m\-2,with CYP1A1m\-1m\-1 were 9.00 ( P =0.006),3.94( P =0.195),5.40( P =0.036) respectively,and those who had higher serum selenium with CYP1A1 m\-2m\-2,with CYP1A1m\-1m\-2 were 1.69( P =0.500),1.13( P =0.705) respectively.Conclusion Polymorphism of CYP1A1 was not associated with the risk of lung cancer,but there was significant inverse association between the serum selenium level and the risk of lung cancer.A combined effect of polymorphism of CYP1A1 MspI and serum selenium level on the risk of lung cancer was suggested.
Dual-Polarized Ka-Band Vivaldi Antenna Array

This article presents a high-performance fully metallic dual-polarized wideband Vivaldi array for the <inline-formula> <tex-math notation="LaTeX">$Ka$ </tex-math></inline-formula>-band (26–40 GHz), which is going to be used, for example, in 5G millimeter-wave (mmWave) communication networks. Antenna-array elements are fed straight from a single printed circuit board (PCB) that allows integrating active components in the immediate proximity of antenna elements. A whole array can be placed on a PCB as a through-hole or surface-mount technology component. The antenna is simulated in a unit cell with periodic boundary conditions and in an <inline-formula> <tex-math notation="LaTeX">$8\times8$ </tex-math></inline-formula> array configuration. The simulations show that the active reflection coefficient is below −10 dB across the entire <inline-formula> <tex-math notation="LaTeX">$Ka$ </tex-math></inline-formula>-band and throughout most of the beam-steering angles up to ±60°. Lower than 3 dB scan loss is achieved in approximately ±60° range in the elementary planes and ±50° in the diagonal planes. The reflection coefficient and gain of each of the four elements in different parts of the manufactured dual-polarized <inline-formula> <tex-math notation="LaTeX">$8\,\,\times8$ </tex-math></inline-formula> array were measured and simulated with the remaining elements terminated with a <inline-formula> <tex-math notation="LaTeX">$50~\Omega $ </tex-math></inline-formula> load. The measured results follow closely the full-wave finite array simulation results; the reflection coefficient is low and the element pattern is wide over the entire frequency range.
Fast-to-Alfvén Mode Conversion and Ambipolar Heating in Structured Media. I. Simplified Cold Plasma Model

Linear fast magnetoacoustic waves are introduced into a cold stratified plasma model made up of a doubly periodic ensemble of straight diminished-Alfvén-speed tubes. Coupling between fast and Alfvén waves is produced by stratification and the tube structures, and scattering is strong for wavelengths comparable to the inter-tube separation. Ambipolar diffusion is found to be enhanced by the structuring and is potentially significant at high frequencies. The production of kink waves is discussed and modeled. It is found that the tube structure significantly alters the wave energy reaching the corona and the form that it takes, even for moderate fast-slow tube contrast, with Alfvén waves becoming prominent.
Spreading and oscillation dynamics of drop impacting liquid film

We herein report an experimental study to explore the effects of impact inertia, film thickness and viscosity on the dynamics of shape deformation of a drop impacting a liquid film. We have identified that the spreading dynamics shows a weak dependence on impact inertia, but strongly depends on the film thickness. For a thick film, the liquid surface deforms and absorbs part of the impact energy, and hence inhibits spreading of the drop. For a thin film, the drop motion is restricted by the bottom solid substrate, promoting spreading. The periodicity of the capillary controlled shape oscillation, on the other hand, is found to be independent of impact inertia and film thickness. The damping of the shape oscillation shows strong dependence on the film thickness, in that the oscillation decays faster for smaller film thicknesses, due to the enhanced viscous loss.
Study on the influence law of ventilation conditions on heat loss in a roadway of high altitude mine

Abstract It is necessary to study the heat loss law along the roadway of high altitude mines for the design of anti-freezing ventilation system. With a mine adit as the research object, this article used FLUENT software to carry out numerical simulations to study the influence of altitude and ventilation conditions on the heat loss along the roadway. Using the uniform design and regression analysis method, the prediction formulas of heat loss with different influential factors were fitted out. The results showed that the heat loss along the roadways has a negative exponential correlation with altitudes while is positively correlated with inlet airflow volume and convective temperature difference. The main factors impacting the heat loss along the roadway in a descending sequence was as follows, convective temperature difference, airflow volume, roadway length, and altitude. When given a confidence interval of 95%, the regression model of the heat loss parameter along the roadway is highly significant. With the fitting error controlled within 15% which can meet the needs of engineering prediction.