Although Structure-from-Motion (SfM) as a maturing technique has been widely used in many applications, state-of-the-art SfM algorithms are still not robust enough in certain situations. For example, images for inspec...
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To monitor safely managed drinking water services, an increasing number of countries have integrated water quality testing for Escherichia coli into nationally-representative household surveys such as the Multiple Ind...
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Enabling robots to walk and run on yielding terrain is increasingly vital to endeavors ranging from disaster response to extraterrestrial exploration. While dynamic legged locomotion on rigid ground is challenging eno...
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The advanced machining of components used in miniature unmanned aircraft vehicles is the focus of this study. The finite element method (FEM) is used to predict forces and temperatures using cutting tool inserts with ...
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The advanced machining of components used in miniature unmanned aircraft vehicles is the focus of this study. The finite element method (FEM) is used to predict forces and temperatures using cutting tool inserts with a thin nanostructured film of high integrity. Similarity models are used to validate the finite element results and to understand the influence of micromachining parameters on cutting temperatures generated when machining Al 380-0 alloy. The predicted results are compared to experimental forces and temperatures using a three-dimensional piezoelectric function dynamometer and a short-range infra-red wavelength thermal camera. Nanostructured thin layer coatings lower machining forces and temperatures, which are validated through FEM predictions and experimental observations. The experimental results suggest that increasing the cutting tool’s rake angle at higher depths of cut will reduce cutting temperatures, which are predicted using the similarity models for micromachining.
Teleaudiology is a part of the telehealth approach, and technology was used to deliver audiology and information services to clients using ICT applications such as telephone, email, and video conferencing. Despite thi...
Teleaudiology is a part of the telehealth approach, and technology was used to deliver audiology and information services to clients using ICT applications such as telephone, email, and video conferencing. Despite this service’s benefits, the collaboration between audiologists and engineers is essential to maximize the teleaudiology application. Therefore, this state-of-the-art review aims to summarize and discuss the current evidence on the teleaudiology approach, focusing on technology and applications. A search strategy of database Scopus, Web of Science (WoS), and PubMed were conducted in December 2020, and 13 relevant articles were identified. The inclusion criteria were teleaudiology studies conducted in all countries or regions, articles written in English, and were defined in terms of participants, intervention(s), comparators or controls, outcomes, and study design (PICOS). The review describes three main components: screen sharing or remote access, audio-visual communication, and other technology related to engineering development. In this review, specific research projects can be carried out through audiologists and engineers collaboration such as High-Tech Teleaudiology Van (HTTv) and developing several simulators for the teleaudiology training purposed. In conclusion, having a system such as teleaudiology, comparable audiological services can be conveniently offered to patients, in conjunction with other benefits and collaboration.
The growth of consumer electronic products is encouraged by innovations and has stimulated the persistent development of earphones for high-quality sound reproduction. Earbud earphone is located in the concha of the h...
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Accurate forecasting is important for decision-makers. Recently, the Amazon rainforest is reaching record levels of the number of fires, a situation that concerns both climate and public health problems. Obtaining the...
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Vehicle electrification is one of the primary strategies being pursued for the decarbonization of the transportation sector. But to meet emissions reduction goals for that sector, the current vehicle replacement rate ...
Vehicle electrification is one of the primary strategies being pursued for the decarbonization of the transportation sector. But to meet emissions reduction goals for that sector, the current vehicle replacement rate is insufficient. Vehicle scrappage policies can accelerate fleet turnover by providing an incentive to retire a vehicle before its natural end of life and simultaneously replace it with a more efficient or less polluting alternative. Previous scrappage programs, like the United States' Cash for Clunkers, have had limited success as decarbonization policies; however, most of these programs ended before the widespread availability of electric vehicles and did not have decarbonization as a primary policy goal. Here we explain why scrappage policies may be necessary to meet climate goals, review historic vehicle scrappage policies from a variety of countries, highlight the successes and failures of those policies, and establish policy design considerations that could help ensure that future scrappage programs are more successful than previous efforts.
Autonomous navigation is of great importance for service robots. Such robots need various technologies, especially localization, and mapping. In this paper, we focus on the localization problem. Commonly, to solve the...
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ISBN:
(数字)9781728166674
ISBN:
(纸本)9781728166681
Autonomous navigation is of great importance for service robots. Such robots need various technologies, especially localization, and mapping. In this paper, we focus on the localization problem. Commonly, to solve the localization problem, the creation of a map is needed. However, creating the map takes considerable time and costs. Therefore, one solution for indoor environment is to use architectural floor plans since buildings have own floor plans. If a robot can use them for localization, it enables users to cut the time and costs for creating the map from scratch. However, the floor plans sometimes do not match with a real building. Besides, sensor measurement sometimes contains objects such as a pedestrian, which are not contained in the floor plans. In this paper, we propose a localization algorithm with architectural floor plans that is robust to such inconsistencies. The algorithm estimates a robot coordinate by matching the floor plan with the point clouds obtained from depth images. Outliers derived from the inconsistencies in the point clouds are filtered with plane information from the depth images with the Generalized ICP framework. We tested our algorithm with floor plans in a real building and in a simulator as a case study. The results show that our algorithm can localize a robot with average more than twice accuracy compared to AMCL and be used for real-time applications.
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