نتایج جستجو برای: ndt
تعداد نتایج: 1494 فیلتر نتایج به سال:
Plane segmentation is a basic task in the automatic reconstruction of indoor and urban environments from unorganized point clouds acquired by laser scanners. As one of the most common plane-segmentation methods, standard Random Sample Consensus (RANSAC) is often used to continually detect planes one after another. However, it suffers from the spurious-plane problem when noise and outliers exist...
Navigational Development Techniques (NDT) is a Model-driven framework focused on defining Web requirements and obtaining related artefacts from them by means of transformations. Testing is one of the key elements in a software development process, however NDT neither include models to define artefacts nor transformations to obtain them from requirements. This paper presents how NDT improves wit...
In this paper the principle and experimental process of the infrared thermal wave nondestructive testing (NDT) on carbon fiber reinforced silicon carbide (Cf /SiC) ceramic matrix composite sample are demonstrated. The experiment results compared with X-ray testing results show that the infrared thermal wave NDT is an effective method for the Cf /SiC ceramic matrix composite, and it can be used ...
Lead (Pb) and methyl mercury (MeHg) are well established neurodevelopmental toxicants (NDTs), but joint exposure to chemical and nonchemical (e.g., maternal stress) stressors has rarely been considered. We characterized exposure to Pb, MeHg and a measure of physiological dysregulation associated with chronic stress and examined race/ethnicity as a predictor of joint NDT exposure. Using data fro...
The complement system represents an innate immune mechanism of host defense that has three effector arms, the C3a receptor, the C5a receptor (C5aR), and the membrane attack complex. Because of its inflammatory and immune-enhancing properties, the biological activity of C5a and its classical receptor have been widely studied. Because specific antagonism of the C5aR could have therapeutic benefit...
Corrosion of reinforced concrete (RC) structures has been one of the major causes of structural failure. Early detection of the corrosion process could help limit the location and the extent of necessary repairs or replacement, as well as reduce the cost associated with rehabilitation work. Non-destructive testing (NDT) methods have been found to be useful for in-situ evaluation of steel corros...
An emerging trend of next generation communication systems is to provide network edges with additional capabilities such as storage resources in the form of caches to reduce file delivery latency. To investigate the impact of this technique on latency, we study the delivery time of a cache-aided broadcastrelay wireless network consisting of one central base station, M cache-equipped transceiver...
STUDY DESIGN Randomized, controlled trial. OBJECTIVES To assess the believability of a novel sham intervention for a neurodynamic technique (NDT) in participants with signs and symptoms of carpal tunnel syndrome (CTS). Additionally, we wished to assess a potential mechanism of NDT (hypoalgesia) and to compare outcomes related to clinical pain and upper extremity disability between NDT and a s...
3D maps including urban structures and terrain information facilitate urban searches for robots operating in various robot scenarios. However it suffers from large memory requirements and computation time to deal with point clouds collected by range sensors. It is problematic for operating rescue robots in real time. NDT (Normal Distribution Transform) grid is a suitable map model to deal with ...
Recent research work on non-destructive testing (NDT) and structural health monitoring (SHM) for civil engineering materials and structures from the United States is described. Developments in three topic areas are discussed: non-linear analysis of ultrasound and vibration for concrete, internal imaging for concrete using two different data types and SHM and NDT for steel cables and tendons. In...
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