This article presents and discusses the implementation of a direct volume rendering system for Web, which articulates large portion task in client machine. By placing emphasis local client, our takes advantage its power, while at same time eliminates processing from unreliable bottlenecks (e.g. network). The developed efficient manner capabilities recently released WebGL standard, makes available accelerated graphic pipeline (formerly unusable). dependency on specially customized hardware is...

In the context of smart manufacturing, concept Visual Computing is a key enabling technology for Industry 4.0. and Physically-based simulation enables implementation interactive, visual (in most cases) non-disruptive solutions within (a) production process (off-line or in-line) shop floor, (b) interaction with customers clients in whole value chain, and/or (c) product-service schemas. Technologies such as Industrial Big Data, Human-Robot Collaboration, IIOT & 5G, Cybersecurity,...

New motor rehabilitation therapies include virtual reality (VR) and robotic technologies. In limb rehabilitation, posture is required to (1) provide a realistic representation in VR games (2) assess the patient improvement. When exoskeleton devices are used therapy, measurements of their joint angles cannot be directly represent limb, since human kinematic models differ. response this shortcoming, we propose method estimate attached exoskeleton. We use constraints on joints angles. This...

Contact hysteresis between sliding interfaces is a widely observed phenomenon from macro- to nanoscale interfaces. Most such studies are done using an atomic force microscope (AFM) where the speed few $\ensuremath{\mu}\mathrm{m}/\mathrm{s}$. Here, we present unique study on stiction head-disk interface of commercially available hard disk drives, wherein vertical clearance head and same order as in various AFM-based fundamental but with that nearly 6 orders magnitude higher. We demonstrate...

As slider-to-disk spacing becomes smaller than 10 nm, electrostatic and intermolecular forces become increasingly important. Even if the slider disk are both grounded, a potential difference can exist between them due to contact potential, which, as we show here, generate an force greater van der Waals force. We have developed method for measuring by monitoring induced motion with Laser-Doppler-Vibrometer (LDV) lock-in amplifier while applying ac dc bias voltages. find that first harmonic of...

Industrial dimensional assessment presents instances in which early control is exerted among “warm” (approx. 600 ∘C) pieces. Early saves resources, as defective processes are timely stopped and corrected. Existing literature devoid of on warm workpieces. In response to this absence, manuscript the implementation results an optical system performs in-line inspection revolution workpieces singled out from (forming) process. Our can automatically measure, less than 60 s, circular runout Such a...

Real-time depth extraction from stereo images is an important process in computer vision -- This paper proposes a new implementation of the dynamic programming algorithm to calculate dense maps using CUDA architecture achieving real-time performance with consumer graphics cards We compare running time against CPU and demonstrate scalability property by testing it on different

In the context of computer numeric control (CNC)-based sheet metal laser cutting, problem heat transfer simulation is relevant for optimization CNC programs. Current physically based tools use or analytic algorithms which provide accurate but slow solutions due to underlying mathematical description model. This paper presents: (1) an solution heating rectangular curved trajectories and convective cooling, (2) a graphics processing unit (GPU) implementation fast problem, (3) integration...

Robot-Assisted Rehabilitation (RAR) is relevant for treating patients affected by nervous system injuries (e.g., stroke and spinal cord injury). The accurate estimation of the joint angles patient limbs in RAR critical to assess improvement. economical prevalent method estimate posture Exoskeleton-based approximate limb with ones Exoskeleton. This approximation rough since their kinematic structures differ. Motion capture systems (MOCAPs) can improve estimations, at expenses a considerable...

Abstract This study uses anonymized GPS traces to explore travel patterns within six suburban zones and a central area in Mexico City. The descriptive analysis presented this paper profiles trips by distance investigates their distribution each zone. It examines the prevalence of local trips, walkability, availability spread entertainment sites 15-min isochrones accessible foot, bicycle, transit, private vehicle. Notably, zone boasts diverse offerings, commendable substantial proportion...

In the context of generation lubrication flows, gear pumps are widely used, with gerotor-type being specially popular, given their low cost, high compactness, and reliability. The design process gerotor requires simulation fluid dynamics phenomena that characterize displacement by pump. Designers researchers mainly rely on these methods: (i) computational (CFD) (ii) lumped parameter models. CFD methods accurate in predicting behavior pump, at expense large computing resources time. On other...

Additive manufacturing is a key technology of Industry 4.0. In the context Laser Metal Deposition (LMD), problem automating generation layer-by-layer deposition strategies relevant because laser path pattern and process parameters determine mechanical quality resulting part efficiency process. Many existing approaches rely on planning created for subtractive manufacturing. However, these techniques generate patterns not suitable LMD. This manuscript presents which are specific LMD processes,...

A main challenge in Heat-Assisted Magnetic Recording technology is the build-up of contaminants called smear on near field transducer. In this paper, we investigate role optical forces originating from electric gradient formation smear. First, based suitable theoretical approximations, compare force with air drag and thermophoretic head-disk interface for two nanoparticle shapes. Then, evaluate field's sensitivity to relevant parameter space. We find that nanoparticle's refractive index,...

The calculation of forces in the kinematic pairs mechanisms by inverse dynamics is usually performed without friction considerations. In practice, when examination articulated takes into account friction, solution results a complex procedure. If modular approach for used, then exact solutions are available, but not necessarily practical. For example, analytical second-class first-type Assur group 16th degree equation. Previous researches proposed an approximated practical (graphical) method...

Fitting C2-continuous or superior surfaces to a set S of points sampled on 2-manifold is central reverse engineering, computer aided geometric modeling, entertaining, modeling art heritage, etc. This article addresses the fitting analytic (ellipsoid, cones, cylinders) in general position . Currently, state presents limitations 1) automatically finding an initial guess for surface F sought, and 2) economically estimating distance between point F. These issues are which minimizes its...

In the context of lattice-based design and manufacturing, problem physical realization density maps into lattices a particular family is central. Density are prescribed by optimization algorithms, which seek to fulfill structural demands on workpiece, while saving material. These cannot be directly manufactured since local graded densities achieved using bulk solid Because this reason, existing topology approaches bias voxel relative either 0 (void) or 1 (filled). Additive manufacturing...

Avoidance of over-deposition at trajectory corners is relevant in Laser Metal Deposition (LMD) for Additive Manufacturing. Currently available LMD hardware only allows constant material feed (g/s). Therefore, gliding speed the dispenser remaining tuning variable controlling metal corners. Existing literature reports trial–error physical experiments, addressing particular corner angles. In response, this manuscript implementation a voxel-based simulator bead geometry, taking into...