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Topic prevalence and trends of metaverse in healthcare:a bibliometric analysis

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Data Science and Management 2024年第2期7卷 129-143页

作者： pei wu Donghua Chen Runtong Zhang department of Management Science and Engineering School of Economics and ManagementTsinghua UniversityBeijing100083China department of Artificial Intelligence School of Information Technology and ManagementUniversity of International Business and EconomicsBeijing100029China department of Information Management Beijing Jiaotong UniversityBeijing100044China

Metaverse technology is an advanced form of virtual reality and augmented technologies. It merges the digital world with the real world, thus benefitting healthcare services. Medical informatics is promising in the metaverse. despite the increasing adoption of the metaverse in commercial applications, a considerable research gap remains in the academic domain, which hinders the comprehensive delineation of research prospects for the metaverse in healthcare. This study employs text-mining methods to investigate the prevalence and trends of the metaverse in healthcare;in particular, more than 34,000 academic articles and news reports are analyzed. Subsequently, the topic prevalence, similarity, and correlation are measured using topic-modeling methods. Based on bibliometric analysis, this study proposes a theoretical framework from the perspectives of knowledge, socialization, digitization, and intelligence. This study provides insights into its application in healthcare via an extensive literature review. The key to promoting the metaverse in healthcare is to perform technological upgrades in computer science, telecommunications, healthcare services, and computational biology. Digitization, virtualization, and hyperconnectivity technologies are crucial in advancing healthcare systems. Realizing their full potential necessitates collective support and concerted effort toward the transformation of relevant service providers, the establishment of a digital economy value system, and the reshaping of social governance and health concepts. The results elucidate the current state of research and offer guidance for the advancement of the metaverse in healthcare.

关键词： Metaverse Health informatics Text mining Bibliometric analysis

Anesthetic management for intraoperative acute pulmonary embolism during inferior vena cava tumor thrombus surgery:A case report

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World Journal of Clinical Cases 2022年第15期10卷 5111-5118页

作者： pei-Yu Hsu En-Bo wu department of Anesthesiology China Medical University HospitalChina Medical UniversityTaichung 404Taiwan department of Anesthesiology Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of MedicineKaohsiung 833Taiwan

BACKGROUND Acute pulmonary embolism(APE)is a rare and potentially life-threatening condition,even with early detection and prompt *** APE required specific ways for detecting since classic symptoms of APE in the awake patient could not be observed or self-reported by the patient under general *** SUMMARY A 44-year-old man with a history of hepatic cell carcinoma was admitted for radical nephrectomy and tumor thrombectomy due to a newly found kidney tumor with inferior vena cava(IVC)tumor *** that occurred during tumor thrombectomy with hypercapnia and *** capnography combined with the transesophageal echocardiography(TEE)provided a crucial differential diagnosis during the *** patient was continuously managed with aggressive intravenous fluid resuscitation and blood transfusion under continuous cardiac output monitoring to maintain hemodynamic *** completed the surgery under stable hemodynamics and was extubated after percutaneous mechanical thrombectomy by a certified *** were no significant symptoms and signs or obvious discomfort in the patient’s self-report during visits to the general *** Under general anesthesia for IVC tumor thrombus surgery,a sudden decrease in end-tidal carbon dioxide is the initial indicator of APE,which occurs before hemodynamic *** intraoperative APE is suspected,TEE is useful in the diagnosis and monitoring before computer tomography pulmonary *** clinical impression and supportive treatment and intervention should be conducted to obtain a better prognosis.

关键词： Acute pulmonary embolism Anesthesia End-tidal carbon dioxide Inferior vena cava tumor thrombus Transesophageal echocardiography Case report

The number of tumor-free axillary lymph nodes removed as a prognostic parameter for node-negative breast cancer

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Chinese Journal of Cancer 2014年第11期33卷 569-573页

作者： Fei Gao Ni He pei-Hong wu department of Interventional Radiology Sun Yat-sen University Cancer Center State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer Medicine

Recently, there has been controversy about the relationship between the number of lymph nodes removed and survival of patients diagnosed with lymph node-negative breast cancer. To assess this relationship, 603 cases of lymph node-negative breast cancer with a median of 126 months of follow-up data were studied. Patients were stratified into two groups(Group A, 10 or fewer tumor-free lymph nodes removed; Group B, more than 10 tumor-free lymph nodes removed). The number of tumor-free lymph nodes in ipsilateral axillary resections as well as 5 other disease parameters were analyzed for prognostic value. Our results revealed that the risk of death from breast cancer was significantly associated with patient age, marital status, histologic grade, tumor size, and adjuvant therapy. The 5- and 10-year survival rates for patients with 10 or fewer tumor-free lymph nodes removed was 88.0% and 66.4%, respectively, compared with 69.2% and 51.1%, respectively, for patients with more than 10 tumor-free lymph nodes removed. For patients with 10 or fewer tumor-free lymph nodes removed, the adjusted hazard ratio(HR) for risk of death from breast cancer was 0.579(95% confidence interval, 0.492-0.687, P dependent of patient age, marital status, histologic grade, tumor size, and adjuvant therapy. Our study suggests that the number of tumor-free lymph nodes removed is an independent predictor in cases of lymph node-negative breast cancer.

关键词：淋巴结肿大乳腺癌肿瘤阴性预后辅助治疗置信区间预测因子

Explicit Forms of q-deformed Lévy-Meixner Polynomials and Their Generating Functions

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Acta Mathematica Sinica,English Series 2008年第2期24卷 201-214页

作者： Zhi Yuan HUANG pei Yan LI Ying wu department of Mathematics Huazhong University of Science and Technology Wuhan 430074 P. R. China

The classical Levy-Meixner polynomials are distinguished through the special forms of their generating functions. In fact, they are completely determined by 4 parameters： c1, c2,γ and β. In this paper, for-1 〈q〈 1, we obtain a unified explicit form of q-deformed Levy-Meixner polynomials and their generating functions in term of c1, c2, γand β, which is shown to be a reasonable interpolation between classical case （q=1） and fermionic case （q=-1）.In particular, when q=0 it＇s also compatible with the free case.

关键词： q-deformation Levy-Meixner polynomials generating function free probability

Investigation on non-LTE radiation emitted from a laser-irradiated Au disk

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Science China(Physics,Mechanics & Astronomy) 2005年第3期48卷 345-360页

作者： GU peijun pei Wenbing FENG Tinggui wu Changshu Institute of Applied Physics and Computational Mathematics P. O. Box 8009 Beijing 100088 China Institute of Applied Physics and Computational Mathematics P. O. Box 8009 Beijing 100088 China Institute of Applied Physics and Computational Mathematics P. O. Box 8009 Beijing 100088 China Institute of Applied Physics and Computational Mathematics P. O. Box 8009 Beijing 100088 China

The spectral character of X-ray emitted from laser-irradiated gold disk is studied by using the one-dimensional non-LTE multigroup radiation transport hydrodynamics code RDMG. The applicability of the “three-temperature” model in which the radiation is described with thermal conduction approximation is checked. The simulation results show that the X-ray emitted from the laser-produced gold plasma is in non-LTE, and that the atom model has significant effect on the structure of X-ray spectrum. However, the plasma states, laser absorption efficiency and X-ray conversion efficiency, which are calculated with the “three-temperature” model, are almost the same as those with non-LTE multigroup radiation transport model. This fact indicates that the “three-temperature” model can be used to study plasma states and the energy distributions produced by a laser-irradiated high-Z target. This is meaningful to the 2-D or 3-D simulation.

关键词： laser-irradiated Au target, the state of plasma, X-ray, non-LTE radiation, atom model.

Dynamic disorder phonon scattering mediated by Cu atomic hopping and diffusion in Cu_(3)SbSe_(3)

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npj Computational Materials 2020年第1期6卷 380-386页

作者： Chen Wang Yixuan wu Yanzhong pei Yue Chen department of Mechanical Engineering The University of Hong KongPokfulam RoadHong KongSARChina Interdisciplinary Materials Research Center School of Materials Science and EngineeringTongji University4800 Caoan RoadShanghai 201804China HKU Shenzhen Institute of Research and Innovation Yuexing 2nd RoadNanshanShenzhen 518057China

Cu_(3)SbSe_(3) that exhibits distinct liquid-like sublattice due to the heterogeneous bonding environment has emerged as a promising low cost superionic semiconductor with intrinsic ultralow thermal ***,the relationship between atomic dynamics resulting in liquid-like diffusion and anomalous phonon transport properties remains poorly ***,combing ab initio molecular dynamics with temperature-dependent Raman measurements,we have performed a thorough investigation on the lattice dynamics of Cu_(3)SbSe_(3).Superionic transition is unveiled for both structurally inequivalent Cu atoms at elevated temperatures,while the Se-formed tetrahedral framework can simultaneously maintain.

关键词： diffusion phonon atomic

Nonnegative correlation coding for image classification

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Science China(Information Sciences) 2016年第1期59卷 106-119页

作者： Zhen DONG Wei LIANG Yuwei wu Mingtao pei Yunde JIA Beijing Laboratory of Intelligent Information Technology School of Computer ScienceBeijing Institute of Technology

Feature coding is one of the most important procedures in the bag-of-features model for image classification. In this paper, we propose a novel feature coding method called nonnegative correlation *** order to obtain a discriminative image representation, our method employs two correlations: the correlation between features and visual words, and the correlation between the obtained codes. The first correlation reflects the locality of codes, i.e., the visual words close to the local feature are activated more easily than the ones distant. The second correlation characterizes the similarity of codes, and it means that similar local features are likely to have similar codes. Both correlations are modeled under the nonnegative constraint. Based on the Nesterov's gradient projection algorithm, we develop an effective numerical solver to optimize the nonnegative correlation coding problem with guaranteed quadratic convergence. Comprehensive experimental results on publicly available datasets demonstrate the effectiveness of our method.

关键词： image classification correlation coding nonnegativity locality similarity

development of Atmosphere-controlled Tribometer and Fail-safe Analysis

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Chinese Journal of Mechanical Engineering 2012年第5期25卷 1052-1059页

作者： DUAN Haitao pei Zhaohui wu Yong TU Jiesong LI Jian wuhan Research Institute of Materials Protection Wuhan 430030 China State Key Laboratory of Tribology Tsinghua University Beijing 100084 China

The design of existing tribometer mainly focuses on normal pressure and environmental conditions, and aims to measure the effect of load and speed on material performance. The effect of gas pressure and environmental condition on performance of materials is usually not considered. Thus, data from friction tests are not precise. In this paper, a new atmosphere tribometer is developed to study the tribological behavior of materials under severe rugged atmosphere. A fail-safe analysis is performed through reproducibility, comparability, and sensitivity tests. The tribometer allows tests to be performed in block-circle disc line contact, pin-circle disc line contact, and block-circle disc face contact configurations at controlled atmosphere and gas pressure. A self-centering plant is designed to settle the poor contact problem. A pin-on-disk test is conducted, and the test results indicate that the proposed design is efficient. A combined sealing style is introduced to control gas leaks. Compared with other sealing styles, the combined sealing is found to meet the experiment requirements best. And the reproducibility, comparability, and sensitivity tests validate the performance of the tribometer. The designed atmosphere tribometer reliably simulates the friction test under extremely harsh conditions, enhances the ability for material tribological properties test, and ensures accuracy of the tribological data.

关键词： tribometer atmosphere polymer tribological properties

Research on Transfer Learning of Vision-based Gesture Recognition

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International Journal of Automation and computing 2021年第3期18卷 422-431页

作者： Bi-Xiao wu Chen-Guang Yang Jun-pei Zhong College of Automation Science and Engineering South China University of TechnologyGuangzhou 510640China Shien-Ming wu School of Intelligent Engineering South China University of TechnologyGuangzhou 511442China Foshan Newthinking Intelligent Technology Company Ltd. Foshan 528231China

Gesture recognition has been widely used for human-robot *** present,a problem in gesture recognition is that the researchers did not use the learned knowledge in existing domains to discover and recognize gestures in new *** each new domain,it is required to collect and annotate a large amount of data,and the training of the algorithm does not benefit from prior knowledge,leading to redundant calculation workload and excessive time *** address this problem,the paper proposes a method that could transfer gesture data in different *** use a red-green-blue(RGB)Camera to collect images of the gestures,and use Leap Motion to collect the coordinates of 21 joint points of the human ***,we extract a set of novel feature descriptors from two different distributions of data for the study of transfer *** paper compares the effects of three classification algorithms,i.e.,support vector machine(SVM),broad learning system(BLS)and deep learning(DL).We also compare learning performances with and without using the joint distribution adaptation(JDA)*** experimental results show that the proposed method could effectively solve the transfer problem between RGB Camera and Leap *** addition,we found that when using DL to classify the data,excessive training on the source domain may reduce the accuracy of recognition in the target domain.

关键词： Transfer learning gesture recognition red-green-blue(RGB)Camera Leap Motion joint distribution adaptation(JDA)