Provided is a method for practising a golf swing, involving judging whether or not a swing action is accurate by establishing a swing plane to guide the brandishing of a club, and setting up a member outside the swing plane to monitor whether a shaft of the club is forming an included angle with the swing plane. Further provided is a device for practising a golf swing. The device comprises a stand (1) and a swing guidance frame (2) provided on the stand (1) and forming a fixed included angle with the ground, wherein a surface of the swing guidance frame (2) is provided with a guidance face (2-3) for bearing a club, and concave-convex positions (2-4) or an inductive device (5) are provided outside the guidance face (2-3) to provide prompting that the club shaft has formed an included angle with the guidance face indicating a bad swing action when a person is practising his/her swing.
Molecular orbital tomography (MOT) based on high-order-harmonic generation opens a way to track the molecular electron dynamics or even follow a chemical reaction. However, the real-time imaging of the evolution of electron orbitals is hampered by the multi-shot measurement of high-order harmonics. Here, we report a single-shot MOT scheme with orthogonal two-color (OTC) fields. This scheme enables the tomographic imaging of molecular orbital with single-shot measurement in experiment, owing to the two-dimensional manipulation of the electron motion in OTC fields. Our work paves the way towards tracking the molecular electron dynamics with combined attosecond temporal and sub-Angstrom spatial resolutions. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Over the past decades, medical image analytics was greatly facilitated by the explosion of digital imaging techniques, where huge amounts of medical images were produced with ever-increasing quality and diversity. However, conventional methods for analyzing medical images have achieved limited success, as they are not capable to tackle the huge amount of image data. In this paper, we review state-of-the-art approaches for large-scale medical image analysis, which are mainly based on recent advances in computer vision, machine learning and information retrieval. Specifically, we first present the general pipeline of large-scale retrieval, summarize the challenges/opportunities of medical image analytics on a large-scale. Then, we provide a comprehensive review of algorithms and techniques relevant to major processes in the pipeline, including feature representation, feature indexing, searching, etc. On the basis of existing work, we introduce the evaluation protocols and multiple applications of large-scale medical image retrieval, with a variety of exploratory and diagnostic scenarios. Finally, we discuss future directions of large-scale retrieval, which can further improve the performance of medical image analysis. Copyright =C2=A9 2017 Elsevier B.V. All rights reserved.
A golf swing positioning indication method comprises: using a plane formed by projecting a light source and having a certain angle with the ground as a reference surface (2, 9), guiding a swing process of a golfer to swing directly on the reference surface (2, 9) or swing on a swing plane parallel to the reference surface (2, 9), and randomly selecting a point on an intersecting position of the swing plane and the ground as a ball placing point (10), so that the swing path and the hitting point are both in the swing plane to guide the correct swing action. Also disclosed is a golf swing positioning indication apparatus.
Network-on-Chip (NoC) is becoming a competitive solution to connect hundreds of processing elements in modern computing platforms. Under the trend of shrinking feature sizes, circuits are likely to suffer from faults which lead to degraded performance and erroneous behaviour. Compared to permanent faults, transient faults happen even more frequently and seriously while they are hidden within complex on chip behaviours. One of the serious consequences caused by transient faults is taking illegal turns by the packets after the damage of control logic in on-chip routers which may lead to a deadlock situation and eventually crashing the entire system. To avoid this situation, in this paper, we propose a comprehensive scheme called ODT including an improved router architecture, an illegal-turn-resilient routing algorithm, online fault-detect units and a fault classification method. By applying ODT, more turns are supported on routing level and the deadlock situations can be significantly reduced. Experimental results indicate up to 22% increase of the survived packets in the network when 4% of routing computation units in failure. The extra area overhead and power consumption of ODT method is around 9.22% and 9.63%. (C) 2016 Elsevier B.V. All rights reserved.
To achieve high reliability in on-chip networks, it is necessary to test the network as frequently as possible to detect physical failures before they lead to system-level failures. A main obstacle is that the circuit under test has to be isolated, resulting in network cuts and packet blockage which limit the testing frequency. To address this issue, we propose a comprehensive network-level approach which could test multiple routers simultaneously at high speed without blocking or dropping packets. We first introduce a reconfigurable router architecture allowing the cores to keep their connections with the network while the routers are under test. A deadlock-free and highly adaptive routing algorithm is proposed to support reconfigurations for testing. In addition, a testing sequence is defined to allow testing multiple routers to avoid dropping of packets. A procedure is proposed to control the behavior of the affected packets during the transition of a router from the normal to the testing mode and vice versa. This approach neither interrupts the execution of applications nor has a significant impact on the execution time. Experiments with the PARSEC benchmarks on an 8x8 NoC-based chip multiprocessors show only 3 percent execution time increase with four routers simultaneously under test.
Gui, Mengcui
Luo, Xuan
Lin, Jing
Li, Yue
Zhang, Min
Zhang, Xiaofan
Yang, Mingshan
Wang, Wei
Bu, Bitao
The objective of this study was to describe the clinical characteristics, outcome and factors that may affect the outcome of childhood-onset myasthenia gravis (CMG) patients in China. We have followed up 424 patients with CMG for at least 5 years at Tongji Hospital. At the end of follow-up, the outcome of all the patients was measured according to MGFA Post-intervention Status. In this study, the patients have been followed up for 9.8 =C2=B1 5.4 years. The mean onset age was 5.4 =C2=B1 3.6 years. Ocular myasthenia gravis (OMG) was the major type of CMG within 2 years after onset (95%). Thymic hyperplasia was found in 116 patients, and thymoma was confirmed in 6 patients. Acetylcholine receptor antibodies were elevated in 69.5% of the patients. All the patients were routinely treated. Thymectomy was performed in 34 patients (8.0%). At the end of follow-up, seventy-one patients (16.7%) were significantly improved, 66 patients (15.6%) remained unchanged, 53 patients (12.5%) were worsened, and 234 patients (55.2%) were exacerbated. Importantly, fifty OMG patients (12.4%) had transformed into generalized myasthenia gravis (GMG) over 2 years after onset. Thymectomy did not effectively reduce the transformation from OMG to GMG. However, GMG cases significantly benefited from the surgery. This study indicated that the cases with autoimmune CMG account for over 50% in Chinese MG population. The long-term follow-up discloses that CMG patients have a low percentage of improvement, and a high percentage of worsening and exacerbation. The treatment should not be withdrawn too early after the patients obtain complete stable remission. More studies are needed to gain better control of CMG symptoms.=20
Concepts herein relate to processing urine sediment images. An example method comprises: approximating the color of a pixel in a block to be processed to one of the kc colors in a code book, wherein the code book is a set of the kc colors generated in a set of urine sample blocks; obtaining a distribution histogram of the number of pixels the color approximation results of which fall on each color of the kc colors; using an occurrence frequency correction factor to correct the number of pixels the color approximation results; standardizing the corrected number of pixels the color approximation results; and processing the block to be processed.
This work reports on an experimental investigation of Co9S8 hollow spheres with excellent interfacial charge transfer ability for the electrochemical detection of hydrogen peroxide and glucose in alkaline environment. The result reveals that the Co9S8 hollow spheres exhibit excellent electrocatalytic activity for the reduction of hydrogen peroxide. An electrochemical sensor based on Co9S8 can be further realized, exhibiting a linear response range from 0.0001 to 11.11 mM for hydrogen peroxide with a low detection limit of 0.02 mu M, and a high sensitivity of 267.2 mA mol(-1) cm(-2), which is one of the highest values among the non-enzymatic sensors based on inorganic oxides. The Co9S8 sensor also exhibits good response toward glucose at different concentrations. These results demonstrate that the as-prepared Co9S8 hollow spheres have a potential application in the development of sensors for enzyme-free detection of H2O2 and glucose. (C) 2015 Elsevier B.V. All rights reserved.
A catalyst component for olefin polymerization which contains magnesium, titanium, halogen and electron donors is provided in the invention. The electron donors are selected from at least one succinate compounds of following general formula (I), and the structural content of Fischer projection formula (II) in said succinate compounds (I) is less than 100 wt%, but not less than 51.0 wt%. Compared with the mesomer whose structural content of Fischer projection formula (II) is 100%, the catalyst component provided by present invention not only largely decreases the manufacturing cost, but also improves certain properties of the catalyst, for example the molecular weight distribution of polymers obtained by catalyzing reaction using said catalyst is wider, which is beneficial for improving processing properties of polymers. The corresponding catalyst is also provided.
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