This research paper presents a comparative study of machine learning (ML) algorithms for the predictive modelling of spot-welding process parameters. The focus is on predicting the nugget diameter (Nd) and nugget heig...
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Lithium all-solid-state batteries (LASSBs) face the challenge of poor performance, interface contact between electrodes, limiting voltage window of solid electrolytes, side reactions between cathode/solid electrolyte,...
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Thin-film transistors (TFT) and organic light-emitting diodes (OLEd) fordisplay applications involve new materials, structures and processes in the design anddevelopment phase, and these elements can have a signific...
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For the past decades, the density of drAM has been remarkably increased by making access transistors and capacitors smaller in size per unit area. However, shrinking devices far beyond the 10 nm process node increasin...
For the past decades, the density of drAM has been remarkably increased by making access transistors and capacitors smaller in size per unit area. However, shrinking devices far beyond the 10 nm process node increasingly poses process andreliability challenges. As Flash technology made a pivotal and successful innovation via 3d NANd, drAM technology may also adopt vertical stacking memory cells. Vertically stackeddrAM (VS-drAM) continues to increase bit density on a die by increasing the number of layers along with reducing the size of the transistor. In this paper, the opportunities and challenges of VS-drAM are discussed.
Nowadays, the issue of command security in the distribution network dispatching telephone command mode is becoming increasingly prominent, andrelevant personnel are paying more and more attention to the information s...
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The Changyuan block of daqing oilfield in China has a shallow reservoir burial depth (100md), is in the late stage of development, and has a high water content (>95%).Hydraulic fracturing produced non-uniformly pro...
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ISBN:
(纸本)9798331305086
The Changyuan block of daqing oilfield in China has a shallow reservoir burial depth (100md), is in the late stage of development, and has a high water content (>95%).Hydraulic fracturing produced non-uniformly propagating horizontal *** present, the mechanism and controlling factors of non-uniform propagation of horizontal fractures are not well *** this paper, based on the geological numerical model of Changyuan block, the non-uniform propagation of horizontal fracture is *** main conclusions are as follows: the horizontal fracture will expand in the direction of large fracture initiation stress difference (minimum horizontal principal stress - vertical stress);the main controlling factors for the non-uniform propagation of horizontal fracture are construction net pressure, temporary plugging distance, fracture initiation stress difference and its non-uniformity;with the increase of the fracture initiation stress difference non-uniformity, horizontal fractures increased flow conductivity, and the cumulative oil production volume will be *** micro-seismic monitoring results show that the non-uniform propagation law of horizontal fracture is in line with the actual *** is of great significance for the redevelopment of the shallow layer of the old oilfield. Copyright 2024 ArMA, American rock Mechanics Association.
Users' requests for the computing power often exhibit suddenness and unpredictability, which creates challenges for workload scheduling of computing power platforms. Traditional scheduling methods struggle to adap...
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We characterize nanoscale out-of-plane features on an industrially relevant semiconductor sample using a coherent extreme ultraviolet high harmonic generation source at 29nm. The advantages of using 13.5nm light are a...
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This paper presents a compact and efficient rectifier capable of harvesting GSM/900 radio frequency (rF) signals. The design uses an impedance-matching network (IMN) block with a series of short radial and curve stubs...
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ISBN:
(数字)9798350351354
ISBN:
(纸本)9798350351361
This paper presents a compact and efficient rectifier capable of harvesting GSM/900 radio frequency (rF) signals. The design uses an impedance-matching network (IMN) block with a series of short radial and curve stubs and an inductor. The rectifier is designed on rT/duroid substrate and has a total size of
$22.10\ \text{mm}\times 8.30\ \text{mm}$
, using a single series diode configuration. The proposeddesign achieves a maximum power conversion efficiency (PCE) of 83.50% at 1 dBm input power. It can also detect and convert low rF input power below −40 dBm into a usable output dC source, making it suitable for low-powered wireless communication systems. Overall, this compact rectifier is a promising solution for harvesting ambient rF energy and can be used for long transmission with minimal path loss.
Lost circulation during drilling wells is very detrimental since it greatly increases the non-productive time and operational cost, also seriously lead to wellbore instability, pipe sticking, blow out, etc... However,...
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