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Advanced Search Results For "Zhang, Kai"

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 "Zhang, Kai"
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Experiences and Attitudes of Elementary School Students and Their Parents Toward Online Learning in China During the COVID-19 Pandemic: Questionnaire Study

Publication Type: Academic Journal

Source(s): Journal of Medical Internet Research, Vol 23, Iss 5, p e24496 (2021)

Abstract: BackgroundDue to widespread SARS-CoV-2 infection, an emergency homeschooling plan was rigorously implemented throughout China. ObjectiveThis study aimed to investigate the experiences and attitudes of elementary school students and their parents (two ...

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Automatically Diagnosing Disk Bulge and Disk Herniation With Lumbar Magnetic Resonance Images by Using Deep Convolutional Neural Networks: Method Development Study

Publication Type: Academic Journal

Source(s): JMIR Medical Informatics, Vol 9, Iss 5, p e14755 (2021)

Abstract: BackgroundDisk herniation and disk bulge are two common disorders of lumbar intervertebral disks (IVDs) that often result in numbness, pain in the lower limbs, and lower back pain. Magnetic resonance (MR) imaging is one of the most efficient techniques...

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Improved formulations of the joint order batching and picker routing problem.

Publication Type: Academic Journal

Source(s): International Journal of Production Research. Nov2022, p1-24. 24p. 11 Illustrations, 10 Charts.

Abstract: Order picking is the process of retrieving ordered products from storage locations in warehouses. In picker-to-parts order picking systems, two or more customer orders may be grouped and assigned to a single picker. Then routing decisions regarding the...

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Big data-enabled intelligent synchronisation for the complex production logistics system under the opti-state control strategy.

Publication Type: Academic Journal

Source(s): International Journal of Production Research; Jul2022, Vol. 60 Issue 13, p4159-4175, 17p, 1 Illustration, 2 Diagrams, 8 Charts, 5 Graphs

Abstract: Copyright of International Journal of Production Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However,...

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Research Progress of Early Recurrence and Cut-off Time of Hepatocellular Carcinoma after Radical Hepatectomy

Publication Type: Academic Journal

Source(s): Zhongliu Fangzhi Yanjiu, Vol 49, Iss 4, Pp 359-363 (2022)

Abstract: Hepatocellular carcinoma (HCC) is one of the most common malignant tumors in China. Surgery is the most important way to treat HCC currently. The high recurrence rate after hepatectomy is the most important reason to affect its prognosis, and it is als...

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Effects of organic fertilizer addition on field phosphorus status and yield under different amounts of phosphorus fertilization in cotton field in Xinjiang, China

Publication Type: Academic Journal

Source(s): Journal of Agricultural Resources and Environment, Vol 39, Iss 1, Pp 118-128 (2022)

Abstract: This research aimed to study the effect of different phosphorus fertilizer rates and organic fertilizer addition on the soil phosphorus availability, plant uptake and distribution, yield composition, and field phosphorus balance of cotton fields in Xin...

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Poly(propylene carbonate) networks with excellent properties: Terpolymerization of carbon dioxide, propylene oxide, and 4,4ʹ-(hexafluoroisopropylidene) diphthalic anhydride

Publication Type: Academic Journal

Source(s): e-Polymers, Vol 21, Iss 1, Pp 511-519 (2021)

Abstract: Poly(propylene carbonate) (PPC) is an emerging low-cost biodegradable plastic with potential application in many fields. However, compared with polyolefin plastics, the major limitations of PPC are its poor mechanical and thermal properties. Herein, a ...

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Analysis of beam currents under an oscillating cone-jet mode for developing high-precision electrospray thrusters.

Publication Type: Academic Journal

Source(s): Journal of Applied Physics; 3/7/2022, Vol. 131 Issue 9, p1-11, 11p

Abstract: Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users ma...

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