The Leap Motion Controller is a new device for hand gesture controlled user interfaces with declared sub-millimeter accuracy. However, up to this point its capabilities in real environments have not been analyzed. Therefore, paper presents first study of Controller. main focus attention on the evaluation accuracy and repeatability. For an appropriate evaluation, novel experimental setup was developed making use industrial robot reference pen allowing position 0.2 mm. Thereby, deviation...

This paper presents a Fitts’ law-based analysis of the user’s performance in selection tasks with Leap Motion Controller compared standard mouse device. The (LMC) is new contact-free input system for gesture-based human-computer interaction declared sub-millimeter accuracy. Up to this point, there has hardly been any systematic evaluation available. With an error rate 7.8% LMC and 2.8% device, movement times twice as large device high overall effort ratings, Controller’s everyday generic...

Abstract Purpose With the coronavirus disease 2019 (COVID-19) pandemic spreading across world, protective measures for containing virus are essential, especially as long no vaccine or effective treatment is available. One important measure so-called physical distancing social . Methods In this paper, we propose an agent-based numerical simulation of pedestrian dynamics in order to assess behavior pedestrians public places context contact transmission infectious diseases like COVID-19, and...

Critical infrastructure (CI) networks are essential for the survival and functionality of society economy. Disruptions to CI services cascading effects these disruptions not currently included in flood risk management (FRM). The work presented this study integrates into every step FRM, including analysis, mitigation communication. A network modelling technique enables consequences be quantified as part analysis. derived from analysis include spatial overviews temporal succession disruptions....

Abstract In flood risk analysis, it is state‐of‐the‐art to determine the direct consequences of flooding for assets and people. Flooding also disrupts critical infrastructure (CI) networks, which are vital in modern society. Cascading effects a CI network can exceed hydrological catchment boundaries. The directly impacted cascade other infrastructures, thus indirectly affected by flood. A robust modelling approach networks basis including these analysis. One challenge balance simplicity...

Low-flow events significantly impact water users and ecosystems due to reduced flow rates deteriorating quality. Elevated temperatures during these periods have led economic ecological consequences. Therefore, temperature is a key aspect in the context of low-flow risk analysis, it essential model accurately. This study introduces one-dimensional optimized for integration into analysis frameworks. Results demonstrate good performance simulating both rivers, with Nash–Sutcliffe efficiency...

Natural hazards impact interdependent infrastructure networks that keep modern society functional. While a variety of modelling approaches are available to represent critical (CINs) on different scales and analyse the impacts natural hazards, recurring challenge for all is availability accessibility sufficiently high-quality input validation data. The resulting data gaps often require modellers assume specific technical parameters, functional relationships, system behaviours. In other cases,...

Abstract In recent years, the issue of high groundwater levels has caught attention. Unfavorable consequences are especially damage to buildings, infrastructure, and environment. Processes that lead hydrological (heavy or extended rainfall flood events), anthropogenic (reduced extractions, interaction with sewer networks, hydraulic engineering measures, structural interventions in water balance, mining activities). Several different map products have been prepared for information inhabitants...

German nuclear power phase out in 2022 leads to significant reconstruction of the energy transmission system. Thus, efficient identification practical routes with minimum impact on ecological and economical interests is growing importance. Due sensitivity Germany’s public grid expansion (especially case overhead lines), participation planning process needs provide a high degree openness accountability. Therefore, new methodological approach for computer-assisted finding optimal power-line...

This paper describes an experiment designed to measure surface and hydrodynamic forces between a mercury drop flat mica immersed in aqueous medium. An optical interference technique allows measurement of the shape as well its distance from mica, for various conditions applied potential, pressure, solution conditions. enables detailed exploration forces, particularly double-layer mica. A theoretical analysis under influence shows that deformation is sensitive indicator being very important...

Abstract Low‐flow events, characterized by a significant water deficiency in river systems, have profound impacts on various users and ecology. Recent low‐flow events Europe had severe economic ecological consequences such as disruptions to hydropower production, irrigation bans, constraints navigation complete drying. These highlight the urgent need for effective risk management demand holistic analysis basis. The existing approaches often focus hydrological aspects, utilizing indices...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTColloidal Interaction between a Rigid Solid and Fluid DropS. J. Miklavcic, R. G. Horn, D. BachmannCite this: Phys. Chem. 1995, 99, 44, 16357–16364Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995https://pubs.acs.org/doi/10.1021/j100044a024https://doi.org/10.1021/j100044a024research-articleACS PublicationsRequest reuse permissionsArticle Views191Altmetric-Citations39LEARN ABOUT...

The problem of determining the electrical double-layer interaction between a rigid planar surface and deformable liquid droplet is formulated as pair coupled differential equations. Young−Laplace equation, describing shape subject to pressures, solved numerically, while linearized Poisson−Boltzmann which describes interaction, analytically. Results are provided for three sets boundary conditions constant dissimilar potentials, charges, mixed case charge on one potential other. Our principal...

Operational flood prediction and risk assessment have become important components of management. One main aspect is the reliability defence line during a event. This generally performed by comparison water level in river to crest height dikes whilst taking only hydraulic geometric aspects into account. Additional information about material zones parameters are often available. However, these data not an appropriate shape when deriving line. paper outlines how fragility curve dike section...

Flood forecasting, warning and emergency response are important components of flood management. Currently, the model-based prediction discharge and/or water level in a river is common practice for operational forecasting. Based on these values decisions about specific measures made within response. However, information provided decision support often restricted to pure hydrological or hydraulic aspects flood. Information weak sections defences, prone areas assets at risk protected rarely...

This paper presents a novel methodology to measure the pull-off force of rigid bodies by recording curves with an atomic microscope (AFM). With presented method, structured or modified surfaces can be inspected under close target device conditions. Furthermore, large sample arrays using AFM as sensing element. The structures in this study are silicon discs diameter 200 ?m, supported soft oxide springs. pushed down tip on bottom substrate. When retracting and disc, discontinuity curve occurs...

Das Interesse an Virtual Reality (VR) für die Hochschullehre steigt aktuell vermehrt durch Möglichkeit, logistisch schwierige Aufgaben abzubilden sowie aufgrund positiver Ergebnisse aus Wirksamkeitsstudien. Gleichzeitig fehlt es jedoch Studien, immersive VR-Umgebungen, nicht-immersive Desktop-Umgebungen und konventionelle Lernmaterialien gegenüberstellen lehr-lernmethodische Aspekte evaluieren. Aus diesem Grund beschäftigt sich dieser Beitrag mit der Konzeption Realisierung einer...

This paper presents a fatigue assessment for multi-pass welds based on the simulation of welding process, post-weld heat treatment (PWHT) and cyclic loading. The commercial software Virtual Weld Shop is used modelling process PWHT. Welding induced residual stresses information about material state can then be in analysis entire engine structure by submodeling technique ANSYS. Based this calculation procedure more accurate prediction component lifetime possible. In order to validate proposed...

Flood managers have traditionally used probabilistic models to assess potential flood risk for strategic planning and non-operational applications. Computational restrictions on data volumes simulation times meant that information the of flooding has not been available operational forecasting purposes. In practice, however, manager questions answer, which are completely supported by outputs traditional, deterministic systems. a collaborative approach, HR Wallingford Deltares developed...

Rainfall is a spatiotemporally varied process and key to accurately capturing catchment runoff determining flood response. Flash response of can be strongly governed by rainfall’s spatiotemporal variability influenced storm movement which drives continuous change throughout rainfall event. In this work, the sensitivity flooded areas are assessed in Kan (Iran). The allochthonous nature floods how they interact with effects investigated. Fifty synthetic rain hyetographs generated traversed...

We present a novel MEMS scanning mirror featuring soft polymeric suspensions of the plate. The combination suspension and stiff silicon plate enables large scan angles with negligible distortion itself at frequencies up to 1 kHz. Thus, angle per applied actuation voltage is high compared single material solutions by H. Miyajima et al. (2004). Furthermore, actuated electrostatic charge separation. Therefore, no electrical connection required.