327 research outputs found
Observation of the out-of-plane orbital antidamping-like torque
The out-of-plane antidamping-like orbital torque fosters great hope for
high-efficiency spintronic devices. Here we report experimentally the
observation of out-of-plane antidamping-like torque that could be generated by
z-polarized orbital current in ferromagnetic-metal/oxidized Cu bilayers, which
is presented unambiguously by the magnetic field angle dependence of
spin-torque ferromagnetic resonance signal. The oxidized Cu thickness
dependence of orbital torque ratios highlights the interfacial effect would be
responsible for the generation of orbital current. Besides that, the oxidized
Cu thickness dependence of damping parameter further proves the observation of
antidamping-like torque. This result contributes to enriching the
orbital-related theory of the generation mechanism of the orbital torque
Hybrid Monte Carlo tree search based multi-objective scheduling
As markets demand targeted products for highly differentiated use cases, the number of variants in production increases, whilst the volume per variant decreases. Different product variants result in differences in work content on workstation level which cause takt time losses and result in a poor utilization. In this context, matrix-structured production systems with neither temporal nor spacial linkage emerged to reduce the effects of different work content on the entire production system. However, matrix-structured production systems require far more complex production control. To that end, this paper presents a scheduling approach. The proposed scheduling system considers variable process sequences and their allocation to different workstations in order to optimize scheduling objectives. This contribution presents a Monte Carlo tree search based optimizer combined with local search as post optimizer to derive schedules in a short time span to enabling reactive scheduling. The application of the scheduler to a benchmark problem and an industrial scheduling problem demonstrates the quality of the results and illustrates how the scheduler reassigns the work content dynamically
Estimation of N2 and N2O ebullition from eutrophic water using an improved bubble trap device
AbstractEbullition pathway of N2 and N2O emission and its importance on nitrogen loss were quantified during a survey of a eutrophic pond located at the subtropical climate zone in China. Using an improved bubble trap device, in situ collection of N2 bubbles was achieved by avoiding the contamination of N2 in the air. Measurements using the device indicated very high ebullition rates (36.3–366.7mlm−2h−1) and N2 ebullition flux (0.025–0.297gm−2h−1) at warmer months of September and October. The ebullition rates and N2 ebullition fluxes dropped sharply in colder months of December and January, ranged 2.5–15.9mlm−2h−1 and 0.002–0.016gm−2h−1, respectively. Distinct spatial variation of ebullition rates, and N2 and N2O ebullition fluxes were observed, with the highest rate at the heavy sediment location. Ebullition of N2O was a very minor fraction of total gaseous nitrogen released to air. The data demonstrated that ebullition could contribute greatly to biogenic N2 fluxes in eutrophic waters with significant bubble emission
Crack initiation and early propagation plane orientation of 2A12-T4 aluminum alloy under tension-torsion fatigue loading including mean tensile stress
The specimen fractures appearances are analyzed to investigate the effects of mean tensile stress on the fatigue crack initiation and early propagation plane orientation under axial-torsion fatigue loading for 2A12T4 aluminum alloy. The fatigue crack initiation and early propagation plane orientations are measured by optical microscope, the results of macro-analysis show that both the maximum shear stress amplitude and normal mean stress have effects on the orientations of crack initiation and propagation plane orientation, which are close to the plane of the maximum shear stress amplitude plane. With increasing the mean tensile stress, more cracks are inclined to initial and propagate on or near the maximum shear stress amplitude plane with larger normal mean stress, and the angle of deviation from the plane of maximum shear stress amplitude increases. The predicted plane orientations based on critical plane methods are compared with experimental measured results
Exploring OCR Capabilities of GPT-4V(ision) : A Quantitative and In-depth Evaluation
This paper presents a comprehensive evaluation of the Optical Character
Recognition (OCR) capabilities of the recently released GPT-4V(ision), a Large
Multimodal Model (LMM). We assess the model's performance across a range of OCR
tasks, including scene text recognition, handwritten text recognition,
handwritten mathematical expression recognition, table structure recognition,
and information extraction from visually-rich document. The evaluation reveals
that GPT-4V performs well in recognizing and understanding Latin contents, but
struggles with multilingual scenarios and complex tasks. Specifically, it
showed limitations when dealing with non-Latin languages and complex tasks such
as handwriting mathematical expression recognition, table structure
recognition, and end-to-end semantic entity recognition and pair extraction
from document image. Based on these observations, we affirm the necessity and
continued research value of specialized OCR models. In general, despite its
versatility in handling diverse OCR tasks, GPT-4V does not outperform existing
state-of-the-art OCR models. How to fully utilize pre-trained general-purpose
LMMs such as GPT-4V for OCR downstream tasks remains an open problem. The study
offers a critical reference for future research in OCR with LMMs. Evaluation
pipeline and results are available at
https://github.com/SCUT-DLVCLab/GPT-4V_OCR
Molecular cloning and expression analysis of adiponectin and its receptors (AdipoR1 and AdipoR2) in the hypothalamus of the Huoyan goose during different stages of the egg-laying cycle
Multiple amino acid sequence alignment of the Huoyan goose adiponectin protein with other vertebrate species. The colour black denotes 100Â % conserved sequences, and the colour grey indicates non-conservative sequences. Gaps (â) were introduced to maximize the alignment. Sequences for the alignment were obtained from GenBank (accession numbers are in brackets): Anas platyrhynchos (ADA68839.1); Ovis aries (AHV91023.1); Canis lupus familiaris (BAD15362.1); Felis catus (BAF52934.1); Gallus (AAX40986.1); Homo sapiens (NP_004788.1); Meleagris gallopavo (XP_010714799.1); Mus musculus (NP_033735.3); and Sus scrofa (ABQ95350.1). (TIFF 3483 kb
- …