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Editorial for the special Issue on High-End Measuring Instruments

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Engineering 2022年第9期16卷 1-2页

作者： Jiubin Tan Kenneth Thomas victor Grattan Key Laboratory of Ultra-Precision Intelligent Instrumentation Ministry of Industry and Information TechnologyHarbin Institute of TechnologyHarbin 150080China school of science&Technology City University of LondonLondon EC1V 0HBUK

In recent years, two major challenges have arisen in the field of measurement and instrument technology. One is the redefinition of the seven basic units in the international system of units(système International d’Unités or sI). The sI is now based on fundamental physical constants, with full implementation having occurred in 2019.

关键词： technology. instrument arise

On High-Frequency soliton solutions.to a （2＋1）-Dimensional Nonlinear Partial Differential Evolution Equation

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Chinese Physics Letters 2008年第2期25卷 425-428页

作者： Kuetche Kamgang victor Bouetou Bouetou Thomas Timoleon Crepin Kofane Department of Physics Faculty of Science University of Yaounde I PO Box. 812 Cameroon Ecole Nationale supérieure Polytechnique University of Yaounde I PO Box. 8390 Cameroon The A bdus salam International Centre for Theoretical Physics P.O. Box 586 Strada Costiera II-34014 Trieste Italy

A （2＋1）-dimensional nonlinear partial differential evolution （NLPDE） equation is presented as a model equation for relaxing high-rate processes in active barothropic media. With the aid of symbolic computation and Hirota＇s method, some typical solitary wave solutions.to this （2＋1）-dimensional NLPDE equation are unearthed. As a result, depending on the dissipative parameter, single and multivalued solutions are depicted.

关键词： pulsars x-ray spectra relativity and gravitation redshift

Benchmarking graph neural networks for materials chemistry

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npj Computational Materials 2021年第1期7卷 739-746页

作者： victor Fung Jiaxin Zhang Eric Juarez Bobby G.sumpter Center for Nanophase Materials sciences Oak Ridge National LaboratoryOak RidgeTNUnited States Computer science and Mathematics Division Oak Ridge National LaboratoryOak RidgeTNUnited States

Graph neural networks(GNNs)have received intense interest as a rapidly expanding class of machine learning models remarkably well-suited for materials *** date,a number of successful GNNs have been proposed and demonstrated for systems ranging from crystal stability to electronic property prediction and to surface chemistry and heterogeneous ***,a consistent benchmark of these models remains lacking,hindering the development and consistent evaluation of new models in the materials ***,we present a workflow and testing platform,MatDeepLearn,for quickly and reproducibly assessing and comparing GNNs and other machine learning *** use this platform to optimize and evaluate a selection of top performing GNNs on several representative datasets in computational materials *** our investigations we note the importance of hyperparameter selection and find roughly similar performances for the top models once *** identify several strengths in GNNs over conventional models in cases with compositionally diverse datasets and in its overall flexibility with respect to inputs,due to learned rather than defined *** several weaknesses of GNNs are also observed including high data requirements,and suggestions for further improvement for applications in materials chemistry are discussed.

关键词： field chemistry intense

On the Conversion of High-Frequency soliton solutions.to a （1＋1）-Dimensional Nonlinear Partial Differential Evolution Equation

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Chinese Physics Letters 2008年第6期25卷 1972-1975页

作者： Kuetche Kamgang victor Bouetou Bouetou Thomas Timoleon Crepin Kofane Department of Physics Faculty of Science University of Yaounde Ⅰ PO Box 812 Cameroon Ecole Nationale supérieure Polytechnique University of Yaounde Ⅰ PO Box 8390 Cameroon The Abdus salam International Centre for Theoretical Physics PO Box 586 Strada Costiera Ⅱ-34014 Trieste Italy

From the dynamical equation of barotropic relaxing media beneath pressure perturbations, and using the reductive perturbative analysis, we investigate the soliton structure of a （1＋1）-dimensional nonlinear partial differential evolution （NLPDE） equation δy（δη ＋ uδy ＋（u^2/2）δy）u ＋ auy ＋ u = 0, describing high-frequency regime of perturbations. Thus, by means of Hirota＇s bilinearization method, three typical solutions depending strongly upon a characteristic dissipation parameter are unearthed.

关键词： supernova explosion proto-neutron star shock wave

A Modified PointNet-Based DDos Attack Classification and segmentation in Blockchain

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Computer systems science & Engineering 2023年第10期47卷 975-992页

作者： Jieren Cheng Xiulai Li Xinbing Xu Xiangyan Tang victor s.sheng school of Computer science and Technology Hainan UniversityHaikou570228China school of Cyberspace security Hainan UniversityHaikou570228China Hainan Blockchain Technology Engineering Research Center Hainan UniversityHaikou570228China Hainan Hairui Zhong Chuang Technol.Co.Ltd. Haikou570228China Department of Computer science Texas Tech University TX 79409USA

With the rapid development of blockchain technology,the number of distributed applications continues.to increase,so ensuring the security of the network has become particularly ***,due to its decentralized,decentralized nature,blockchain networks are vulnerable to distributed denial-of-service(DDos)attacks,which can lead to service stops,causing serious economic losses and social *** research questions in this paper mainly include two aspects:first,the classification of DDos,which refers.to detecting whether blockchain nodes are suffering DDos attacks,that is,detecting the data of nodes in parallel;The second is the problem of DDos segmentation,that is,multiple pieces of data that appear at the same time are determined which type of DDos attack they belong *** order to solve these problems,this paper proposes a modified PointNet(MPointNet)for the classification and type segmentation of DDos attacks.A dataset containing multiple DDos attack types was constructed using the CIC-DDos2019 dataset,and trained,validated,and tested *** results show that the proposed DDos attack classification method has high performance and can be used for the actual blockchain security maintenance *** accuracy rate of classification tasks reached 99.65%,and the accuracy of type segmentation tasks reached 85.47%.Therefore,the method proposed in this paper has high application value in detecting the classification and segmentation of DDos attacks.

关键词： Blockchain DDos PointNet classification and segmentation

Resilience by design:How nature,nurture,environment,and microbiome mitigate stress and allostatic load

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World Journal of Psychiatry 2023年第5期13卷 144-159页

作者： souhad Chbeir victor Carrión Department of Psychiatry and Behavioral sciences School of MedicineStanford UniversityStanfordCA 94305United States

Resilience to psychological stress is defined as adaption to challenging life experiences and not the absence of adverse life *** of resilience include personality traits,genetic/epigenetic modifications of genes involved in the stress response,cognitive and behavioral flexibility,secure attachment with a caregiver,social and community support systems,nutrition and exercise,and alignment of circadian rhythm to the natural light/dark ***,resilience is a dynamic and flexible process that continually evolves by the intersection of different domains in human’s life;biological,social,and *** objective of this minireview is.to summarize the existing knowledge about the multitude factors and molecular alterations that result from resilience to stress *** the multiple contributing factors in building resilience,we set out a goal to identify which factors were most supportive of a causal role by the current *** focused on resilience-related molecular alterations resulting from mind-body homeostasis in connection with psychosocial and environmental *** conclude that there is no one causal factor that differentiates a resilient person from a vulnerable ***,building resilience requires an intricate network of positive experiences and a healthy lifestyle that contribute to a balanced mind-body ***,a holistic approach must be adopted in future research on stress response to address the multiple elements that promote resilience and prevent illnesses and psychopathology related to stress allostatic load.

关键词： stress load alignment

Axial length development in children

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International Journal of Ophthalmology(English edition) 2019年第5期12卷 815-819页

作者： Austin Bach victor M.Villegas Aaron s.Gold Wei shi Timothy G.Murray Larkin Eye Institute Bascom Palmer Eye Institute Murray Ocular Oncology & Retina

AIM: To study ocular axial lengths in pediatric subjects without intraocular pathology. METHODs: An Institutional Review Board-approved consecutive retrospective chart review of axial lengths measured in pediatric subjects who underwent examination under anesthesia due to positive family history of retinoblastoma or other inherited ocular disease. Only subjects without any intraocular pathology in either eye were included. subjects were stratified into age groups. An axial length model using a logarithmic regression algorithm was ***: Data from 330 eyes of 165 subjects were included in the study. The mean age at the time of examination was 30.62(sD 18.04)mo. The steepest increase in axial length was present during the first 10 mo of life. After 36 mo, there was no statistically significant axial length growth. CONCLUsION: This study presents the biggest series of pediatric axial lengths in healthy eyes. The axial length model developed with these data may assist in the diagnosis and management of a wide variety of pediatric ophthalmic diseases.

关键词： pediatric axial length model biometry eye development

Effectiveness of rotavirus vaccines against rotavirus infection and hospitalization in Latin America: systematic review and metaanalysis

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Infectious Diseases of Poverty 2016年第1期5卷 764-775页

作者： victor s.santos Daniella P.Marques Paulo R.s.Martins-Filho Luis E.Cuevas Ricardo Q.Gurgel Postgraduate Program in Health sciences Federal University of SergipeRua Cláudio Batista s/nAracajuSergipe Zip code:49060-108Brazil Department of Medicine Federal University of SergipeAracajuSergipeBrazil Investigative Pathology Laboratory Federal University of SergipeAracajuSergipeBrazil Liverpool school of Tropical Medicine LiverpoolUK

Background:Rotavirus was the leading cause of childhood diarrhoea-related hospitalisations and death before the introduction of rotavirus ***:We describe the effectiveness of rotavirus vaccines.to prevent rotavirus infections and hospitalizations and the main rotavirus strains circulating before and after vaccine introduction through a systematic review and meta-analysis of studies published between 1990 and 2014.203 studies were included to estimate the proportion of infections due to rotavirus and 10 to assess the impact of the vaccines.41 of 46 studies in the post-vaccination period were used for meta-analysis of genotypes,20 to calculate VE against infection,eight for VE against hospitalisation and seven for VE against severe ***:24.3%(95%CI 22.1–26.5)and 16.1%(95%CI 13.2–19.3)of cases of diarrhoea were due to rotavirus before and after vaccine introduction,*** most prevalent G types after vaccine introduction were G2(51.6%,95%CI 38–65),G9(14.5%,95%CI 7–23)and G1(14.2%,95%CI 7–23);while the most prevalent P types were P[4](54.1%,95%CI 41–67)and P[8](33%,95%CI 22–46).G2P[4]was the most frequent genotype combination after vaccine *** was 53%(95%CI 46–60)against infection,73%(95%CI,66–78)against hospitalisation and 74%(95%CI,68.0–78.0)against severe *** in hospitalisations and mortality due to diarrhoea were observed in countries that adopted universal rotavirus ***:Rotavirus vaccines are effective in preventing rotavirus-diarrhoea in children in Latin *** vaccines were associated with changes in genotype distribution.

关键词： Rotavirus vaccines Rotavirus vaccine effectiveness Rotavirus genotype Meta-analysis Latin America

A Generative Model Approach for Geo-social Group Recommendation

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Journal of Computer science & Technology 2018年第4期33卷 727-738页

作者： Peng-Peng Zhao Hai-Feng Zhu Yanchi Liu Zi-Ting Zhou Zhi-Xu Li Jia-Jie Xu Lei Zhao victor s. sheng school of Computer science and Technology Soochow University Suzhou 215006 China Department of Management science and Information systems Rutgers University Piscataway NJ 08854 U.S.A. Department of Computer science University of Central Arkansas Conway 72035 U.S.A.

With the development and prevalence of online social networks, there is an obvious tendency that people are willing to attend and share group activities with friends or acquaintances. This motivates the study on group recommendation, which aims.to meet the needs of a group of users, instead of only individual users. However, how to aggregate different preferences of different group members is still a challenging problem： 1） the choice of a member in a group is influenced by various factors, e.g., personal preference, group topic, and social relationship; 2） users have different influences when in diffe- rent groups. In this paper, we propose a generative geo-social group recommendation model （GsGR） to recommend points of interest （POIs） for groups. specifically, GsGR well models the personal preference impacted by geographical information, group topics, and social influence for recommendation. Moreover, when making recommendations, GsGR aggregates the preferences of group members with different weights.to estimate the preference score of a group to a POI. Experimental results on two datasets show that GsGR is effective in group recommendation and outperforms the state-of-the-art methods.

关键词： group recommendation topic model social network