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ObjectiveTo evaluate the feasibility of the use of spatiotemporal image correlation (STIC) as a screening program for congenital heart disease and the influence of professional experience in those examinations.
MethodsThis prospective cross‐sectional study included 64 pregnant women at gestational age between 20 and 34 weeks, and 12 physician participants who were divided into two groups: group 1—“STIC...
The 55–65 GHz band has very interesting characteristics, such as allowing high-bandwidth communications and improved security (due to high absorption). From the antenna point of view, it also has the interesting feature of allowing the fabrication of very small antennas. Because they're so small, these antennas can be placed directly on-chip. However, silicon is a high loss material at such high frequencies...
A retained surgical instrument is a frequent incident in medical surgery rooms all around the world, despite being considered an avoidable mistake. Hence, an automatic detection solution of the retained surgical instrument is desirable. In this paper, the use of millimeter waves at the 60 GHz band for surgical material RFID purposes is evaluated. An experimental procedure to assess the suitability...
The high path losses experienced by wireless applications at millimeter wavelengths may be mitigated using high gain antennas. The intrinsic small wavelengths makes very attractive to develop solutions with on-chip integrated antennas. However, due to silicon high losses, on-chip antenna elements on RFCMOS technology have reduced efficiency. This paper proposes a solution to obtain an on-chip integrated...
Misplacement of surgical instruments inside an operating room is a frequent mistake that can bring unnecessary complications. We propose a system that can prevent these, through wireless communication. In this paper, we investigate the use of the 55–60 GHz band in the implementation of a RFID system that presents very interesting characteristics like improved security and small size. From the measurements...
Many games and other interactive virtual environments are known for their focus in rendering natural phenomena, such as accurate visuals and physics, in the most believable manner. Several advances in the aforementioned fields took place during the last decade but, unfortunately, this effort has not been reflected in libraries for spatial audio. These libraries traditionally do not accurately simulate...
Distributed computing is being used in several fields to solve many computation intensive problems. In digital games, it is used mainly in multi-player games, where the majority of the game logic is processed in a mainframe or cluster. Single player games could also use distributed computing to process the game logic, devoting host processing to renderization, which is usually the task that digital...
The scattering of acoustic waves in non-homogeneous media has been of practical interest for the petroleum industry, mainly in the determination of new oil deposits. A family of computational models that represent this phenomenon is based on finite difference methods. The simulation of these phenomena demands a high computational cost. In this work we employ GPU for the development of solvers for...
This paper describes a seismic wave sensor, its readout electronics and data acquisition system. The seismic sensor is based on piezoelectric materials, which show the ability of transforming mechanical into electrical signals. In particular, the present sensor is based on a piezoelectric polymer, poly(vinilidene fluoride) as its main characteristics made it suitable for detecting the amplitude and...
In this work we propose a real time 2D parallel feature-based for image morphing and warping algorithm fully implemented in GPU (Graphics Processing Units). We applied the proposed algorithm to animate the appearance of a 3D character's face by morphing its texture map. We compared the performance of the proposed algorithm with the sequential version implemented in CPU and the results have shown that...
The increase of computational power of programmable GPU (graphics processing unit) brings new concepts for using these devices for generic processing. Hence, with the use of the CPU and the GPU for data processing come new ideas that deals with distribution of tasks among CPU and GPU, such as automatic distribution. The importance of the automatic distribution of tasks between CPU and GPU lies in...
We describe the first case in which a neonate with hypoplastic left heart syndrome was initially managed using a mini adjustable banding system.Through a mid-sternotomy, a 5-day-old neonate underwent bilateral pulmonary artery banding using this new system, combined with placement of a main pulmonary artery to the innominate artery shunt.The patient had an uneventful postoperative course. Three percutaneous...
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