This paper presented the design and modeling of a novel nanopositioning actuator that delivers millimeters stroke with high positioning thermal stability. comprises unique electromagnetic driving module (EDM) articulated from segmented dual-magnet (DM) configuration, flexure-based supporting bearings realized via flexible membrane concept. In this paper, fundamental insights on how to model proposed DM configuration are in detail. The remainder focuses EDM stiffness unconventional bearings....

Electromagnetic actuators are energy conversion devices that suffer from inefficiencies. The losses generate internal heat, which is undesirable, as it leads to thermal loading on the device. Temperature rise should be limited enhance reliability, minimize disturbance, and improve output performance of This paper presents application an optimization method determine geometric configuration a flexure-based linear electromagnetic actuator maximizes force per unit heat generated. A two-stage...

Fast Fourier Transform (FFT) is an essential algorithm for numerous scientific and engineering applications. It key to implement FFT in a high-performance energy-efficient manner. In this paper, we leverage the properties of ultrasonic wave propagation silicon computation. We introduce SonicFFT: A system architecture ultrasonic-based acceleration. To evaluate benefits SonicFFT, compact-model based simulation framework that quantifies performance energy integrated comprising digital computing...

In the present work, adsorption of anionic azo dye, new coccine (NCC) on silica and silica-gel in an aquatic environment was discovered. Effective conditions such as time, pH, influence dosage NCC using strong polycation, poly-diallyl-dimethylammonium chloride (PDADMAC) modified (PMS) PDADMAC (PMSG) were systematically studied. The removal PMS PMSG much higher than that raw without all pH ranges from 3 to 10. onto achieved maxima at same contact time 30 min, 6. optimum adsorbent dosages for...

Our purpose was to report acute gastrointestinal (GI) and genitourinary (GU) toxicity rates for prostate cancer patients undergoing image-guided intensity modulated radiation therapy (IG-IMRT) with a daily endorectal water-filled balloon (ERBH2O), assess associations planning parameters pretreatment clinical characteristics.The first 100 proximal seminal vesicle IG-IMRT indexed-lumen cc ERBH2O 79.2 Gy in 1.8 fractions at our institution from 12/2008- 12/2010 were assessed. Pretreatment...

This paper proposes an original approach for detection, localization, and quantification of faults appearing in electrical machines. The used method this work deals with the analysis external magnetic field a machine. is already known, but until now, classical methods only detect if fault present or not. Thus, we propose new based on theory inverse problems. From measurements realized sensors located around machine, numerical model machine inverted to get distribution flux air gap....

This paper presents a new computational method of magnetic field in the air created by known current density distribution coils or solid conductor. The consists decoupling three components vector T <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> . is faster and requires less memory than classical approach, used magnetostatic magnetodynamic finite-element formulations

Purpose: Potential collision between the patient/couch and gantry could delay start of treatment reduce clinical efficiency. The ability to accurately detect possible collisions during planning phase is desired. Such detection should account for specific proton design, beam configuration, couch orientation, patient geometry. In this paper authors developed an approach patient‐machine using plan data. Methods: geometry machine was reconstructed relative isocenter room. surface contour first...

This paper presents the characterization of electro-magnetic (EM) performance conductive composite laminate in consideration for aeronautic design. Novel nanocomposite resin was prepared by incorporating nanofillers into neat epoxy, resulting remarkable improvement its electrical conductivity. The planar structure laminate, which consists 33 layers woven fabric carbon fiber sandwiched nanocomposite, then fabricated under optimal conditions offering many times higher conductivity than using...

Fourier Transform (FT) is one of the most extensively used scientific computations for signal/image processing. Recently, an emerging highly efficient ultrasonic wavefront computing (WFC) technique was developed to compute Fast (FFT) physically using bulk acoustic wave (BAW) piezoelectric transducers and a Fresnel lens. Typically, cuboid shapes are BAW model WFC system. However, shape such usually non-uniformly tapered due fabrication process. In this paper, we investigate effect different...

This paper presents an efficient simulation technology to characterize the Ultra-Wide Band signal propagation between antennas in close proximity a human body, where body works as Wireless Body Area Network. The first technique is hybrid Method of Moments and asymptotic Physical Optics which formulation extended for modeling dielectric body. second combines modification Multilevel Fast Multipole Algorithm with Impedance Boundary Condition. These two techniques drastically reduce...

Wave-based analog computing is a new paradigm heralded as potentially superior alternative to existing digital computers. Currently, there are optical and low-frequency acoustic Fourier transformers. However, the former suffers from phase retrieval issues, latter too physically bulky for integration into CMOS-compatible chips. This paper presents solution these problems: Ultrasonic Transform Analog Computing System (UFT-ACS), metalens-based computer that utilizes ultrasonic waves perform...

Purpose: To reassess and update the role of an endorectal balloon (ERB) in prostate radiotherapy (RT) based on emerging evidence by reviewing various aspects treatment methodologies clinical outcomes. Methods materials: A literature review a PubMed/MEDLINE database search using keywords such as: ERB, RT, toxicities, real-time, image-guided (IGRT), radiofrequency-guided (RGRT), inter- intrafraction motion for articles published over past two years. Ten were identified subdivided into three...

This paper presents an efficient hybrid simulation technique for analysis of the electromagnetic field interactions between multi-transmitters and receivers located within a closed environment.The Method Moments/circuit method is first used modeling transceivers their nearby surrounding to obtain equivalent sources/receivers.Then, approach that combines asymptotic ray tracing deployed calculate long-distance coupling pair transmitter receiver.The acceleration algorithms have been developed...

This paper investigates the propagating mechanisms of ElectroMagnetic (EM) wave in seawater for high data-rate wireless communications. We introduce a novel model undersea transmission that is able to account all propagation paths EM wave, without increasing computational complexity. Different have been simulated virtual environment. The sea surface provides remarkably effective path horizontal between two antennas whereas significant attenuation exists vertical transmission. Rician...

Ultrasonic lenses are not only useful for implementing Fourier computing using ultrasonics, but they can also be used in acoustic imaging. Conventional simulation of ultrasonic meta-lenses requires computationally intensive finite element analysis (FEA). To the best our knowledge, we report first time a inexpensive hybrid method combining FEA with Fresnel diffraction solver to enable 237 µm large radius 3D meta-lens focal length 4 mm, operating at 1.7 GHz. The focusing efficiency image plane...

Abstract Wave-based analog computing has recently emerged as a promising paradigm due to its potential for high computational efficiency and minimal crosstalk. Although low-frequency acoustic systems exist, their bulky size makes it difficult integrate them into chips that are compatible with complementary metal-oxide semiconductors (CMOS). This research paper addresses this issue by introducing compact system (ACS) leverages the interactions between ultrasonic waves metasurfaces solve...

Tasks to be carried out in maritime are usually expensive due the use of manned vessels with large operational crews that includes safety life and property at sea environment. Utilization drones has potential significantly improve efficiency marine offshore operations. Examples include remotely operated inspection for navigation, surveillance or monitoring ship conditions including emissions, unmanned delivery from shore search & rescue With defining new technology as such applications,...