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In this paper, the significant influence of rotor-poles number on the electromagnetic performances of the novel rotor-permanent magnet flux-switching (RPM-FS) machine is investigated. The operation principles of the RPM-FS machines with 10-, 11-, 13- and 14-rotor-poles are analyzed from the generator and motor-driving perspectives, respectively, and the armature reaction field and PM field modulation...
Cuffless technology for blood pressure (BP) measurement offers great potential for unobtrusive monitoring of hypertension. However, the accuracy is still a challenging issue probably owning to the inadequacy of existing noninvasive BP indicators in tracking BP changes, i.e., either the poor trackability of the indicators or the lack of relationship to map the indicators to BP. To figure out the covariation...
Among the most important and distinctive actionable knowledge are actionable behavioral rules (ABRs). To make ABRM a promising technique for security informatics, we develop new methodologies for it. We also conduct an experiment to validate our approach. The experimental results strongly suggest the validity of our approach.
Large area, freestanding graphene papers fabricated from 2D graphene nanosheets with optimized microstructure, graphene sheet alignment and superior properties have a wide range of functional applications. In this paper, we propose a novel approach to fabricate graphene film by Electro-spray deposition (ESD), which is considered as the preparation for a roll-to-roll industrial production of the further...
Graphene-based heat spreading materials, including graphene-based film (GBF) and graphene-based electrically conductive adhesive (G-CA), were applied to electronics packaging. The thermal performances of GBF and G-CA were analyzed by resistance temperature detector (RTD) and thermal infrared imager. When the chip was covered by GBF and G-CA, the temperature of hotspot could be reduced by 3.1°C, at...
Silver (Ag) bond wires are increasingly used in semiconductor components to replace gold (Au) bond wires, and applications for these components are expanding from consumer to high-reliability electronic systems. To assess the impact of this technology transition on the overall component reliability, extended reliability testing beyond the typical JEDEC component qualification testing is needed. Additionally,...
Image retrieval and classification are hot topics in computer vision and have attracted great attention nowadays with the emergence of large-scale data. We propose a new scheme to use both deep learning models and large-scale computing platform and jointly learn powerful feature representations in image classification and retrieval. We achieve a superior performance on the ImageNet dataset, where...
One of the critical challenges faced by the mainstream data mining community is to make the mined patterns or knowledge actionable. Knowledge is considered actionable if users can take direct actions based on such knowledge to their advantage. Among the most important and distinctive actionable knowledge are actionable behavioral rules that can directly and explicitly suggest specific actions to take...
Actionable behavioral rules mining is a new problem of data mining. The produced rules can provide the user explicit suggestions of actions to influence the behaviors of the entity in concern with satisfactory utility to the user. When mining such rules, it is assumed that all the behavioral attributes are categorical, while numerical attributes have been discretized in advance. However, this assumption...
Although Border Gateway Protocol (BGP) is broadly used among autonomous systems (ASes), the topology of peer autonomous systems is often mysterious to some Internet Service Providers (ISPs) or administrative domains. With unknown routing policies of BGP neighbors and their uplink ASes, it is uneasy to make a proper design when building a multihoming environment. Sometimes it may even cause congestion...
In this paper, a five-phase hybrid-excitation flux-switching (HEFS) machine with “E”- core stator cell is proposed and analyzed. The topology and operation principle are investigated. Moreover, the armature winding connection method is analyzed and the analytical sizing equations are derived to determine the main design parameter of HEFS machine. The electromagnetic performance, including the conventional...
This paper designs two six-phase hybrid-excited flux-switching (HEFS) machines with E-core and C-core stator laminations, respectively, for electric vehicles (EVs). The iron bridges are adopted in stators to simplify the manufacturing process. First of all, focused on the flux-regulation capabilities, the steady-state and torque-speed (T-n) characteristics are discussed. Especially, the phenomenon...
The 4.2m Daniel K. Inouye Solar Telescope (DKIST) primary mirror has about 9 mm freeform aspheric departure. Actively controlled stressed lap and infrared deflectometry system have been developed to manufacture the extremely large freeform optics.
Multi-crystalline silicon Passivated Emitter and Rear .Cell (mc-PERC) is a promising combination of p-type low cost and nigh efficiency solar cells. Recently, the Light-Induced Degradation (LED) phenomena on mc-PERC cells have been highly discussed. In order to realize the mechanism, the LID behaviors of 3 groups p-type mc-silicon solar cells with different levels BSRV (Low, Medium and High) have...
In this work, thermo-mechanical stresses and reliability of 3D die-stack structures developed for the Hybrid Memory Cube (HMC) technology are investigated using experiments and modeling analysis. Synchrotron x-ray micro-diffraction measurements are used to directly measure the stress distribution around Cu vias in different die levels. High resolution stress mappings are obtained and verified by finite...
Among the most important and distinctive actionable knowledge are actionable behavioral rules that can directly and explicitly suggest specific actions to take to influence (restrain or encourage) the behavior in the users' best interest. The problem of mining such rules is a search problem in a framework of support and expected utility. The previous definition of a rule's support assumes that each...
For the uncertainties which exist objectively in the robot system impact on the motion performance of joint robot system, an active disturbance rejection control method of joint robot system is proposed based on state observation and compensation. The uncertainties of the system are introduced by constructing extended state in the method, and uncertainties and state variables are estimated by an Extended...
One of the critical challenges faced by the mainstream data mining community is to make the mined patterns or knowledge actionable. Knowledge is considered actionable if users can take direct actions based on such knowledge to their advantage. Among the most important and distinctive actionable knowledge are actionable behavioral rules that can directly and explicitly suggest specific actions to take...
In this paper, a novel rotor-permanent magnet flux-switching (RPM-FS) brushless machine is proposed, in which the magnets are removed from stator as in the conventional stator-PM flux-switching (SPM-FS) machines to rotor with a unique magnetization direction, and three-phase concentrated armature windings are remained in stator. In addition to the introduction of the topology and operation principle...
In this study, we demonstrate a concept for optimizing the alloying process for Al-p+ emitter formation with a commercially available aluminum paste, screen-printing technology and belt-conveyor furnace. A more uniform and conformal Al-p+ emitter is obtained at the sample with slow cooling condition of alloying process. Among the 8µm-thick emitters formed by various alloying profiles, the result shows...
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