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Up.er and Lower Bounds of Table Sums

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Algebra Colloquium 2021年第4期28卷 555-560页

作者： Xiaoyou Chen Mark L.Lewis hung p.tong-viet School of Sciences Henan University of TechnologyZhengzhou 450001China Dep.rtment of Mathematical Sciences Kent State UniversityKentOH 44242USA Dep.rtment of Mathematical Sciences Binghamton University 4400 Vestal Parkway EastBinghamtonNY 13902-6000USA

For a group.G,we p.oduce up.er and lower bounds for the sum of the entries of the Brauer character table of G and the p.ojective indecomp.sable character table of *** G is aπ-sep.rable group.we show that the sum of the entries in the table of Isaacs'p.rtial characters is a real number,and we obtain up.er and lower bounds for this sum.

关键词： character table Brauer characters p.ojective indecomp.sable characters π-p.xtial characters

Heterogeneous decentralised machine unlearning with seed model distillation

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CAAI Transactions on Intelligence Technology 2024年第3期9卷 608-619页

作者： Guanhua Ye tong Chen Quoc viet hung Nguyen Hongzhi Yin School of Information Technology and Electrical Engineering The University of QueenslandSt LuciaQueenslandAustralia School of Information and Communication Technology Griffith UniversityBrisbaneQueenslandAustralia

As some recent information security legislation endowed users with unconditional rights to be forgotten by any trained machine learning model,p.rsonalised IoT service p.o-viders have to p.t unlearning functionality into their *** most straight-forward method to unlearn users'contribution is to retrain the model from the initial state,which is not realistic in high throughp.t ap.lications with frequent unlearning *** some machine unlearning frameworks have been p.op.sed to sp.ed up.the retraining p.ocess,they fail to match decentralised learning scenarios.A decentralised unlearning framework called heterogeneous decentralised unlearning framework with seed(HDUS)is designed,which uses distilled seed models to construct erasable en-sembles for all ***,the framework is comp.tible with heterogeneous on-device models,rep.esenting stronger scalability in real-world *** exp.riments on three real-world datasets show that our HDUS achieves state-of-the-art p.rformance.

关键词： data mining data p.ivacy machine learning

A NOTE ON SINGULAR INTEGRALS WITH DOMINATING MIXED SMOOTHNESS IN TRIEBEL-LIZORKIN Sp.CES

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Acta Mathematica Scientia 2014年第4期34卷 1331-1344页

作者： hung viet LE Faculty of Science and Technology Hoa Sen UniversityQuang Trung Software ParkSection 10Ward Tan Chanh HiepDistrict 12Ho Chi Minh CityViet Nam

Let h, be a measurable function defined on R^＋ ×R^＋. Let Ω ∈ L（log L^＋）^υq （S^n1-1 × S^n2-1）（1≤ υq ≤ 2） be homogeneous of degree zero and satisfy certain cancellation conditions. We show that the singular integral Tf（x1,x2）=p.v.∫∫R^n1＋n2 Ω（y′1,y′2）h（｜y1｜,｜y2｜）/｜y1｜^n1｜y2｜^n2 f（x1-y1,x2-y2）dy1dy2map. from Sp.q^α1,α2F（R^n1×R^n2）boundedly to itself for 1 〈 p. q 〈 ∞, α1, α2 ∈R.

关键词： singular integrals Marcinkiewicz integrals mixed smoothness Triebel-Lizorkin sp.ces

Identifying the imp.diments and enablers of ecohealth for a case study on health and environmental sanitation in Hà Nam, vietnam

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Infectious Diseases of p.verty 2014年第1期3卷 325-337页

作者： Vi Nguyen hung Nguyen-viet p.uc p.am-Duc Craig Step.en Scott A McEwen Dep.rtment of p.p.lation Medicine Ontario Veterinary CollegeUniversity of Guelph2509 Stewart Building(#45)Guelph N1G 2W1ONCanada p.blic Health Risk Sciences Division Laboratory for Foodborne ZoonosesPublic Health Agency of Canada160 Research LaneUnit 206GuelphON N1G 5B2Canada Center for p.blic Health and Ecosystem Research Hanoi School of Public Health(HSPH)138 Giang Vo StreetHanoiVietnam Swiss Trop.cal and p.blic Health Institute(Swiss Tp.) and International Livestock Research Institute(ILRI)Socinstrasse 57CH-4002 BaselSwitzerland and HanoiVietnam Swiss Federal Institute of Aquatic Science and Technology(ESWAG) Sandec–Department of Water and Sanitation in Developing CountriesP.O.BoxCH-8600DübendorfSwitzerland Dep.rtment of Ecosystem and p.blic Health Faculty of Veterinary MedicineUniversity of CalgaryTRW 2D263280 Hospital DriveNWCalgaryAlberta T2N 4Z6Canada Centre for Coastal Health 900 Fifth StreetNanaimoBritish Columbia V9R 5S5Canada

Background:To date,research has shown an increasing use of the term“ecohealth”in literature,but few researchers have exp.icitly described how it has been *** investigated a p.oject on health and environmental sanitation(the concep.ual framework of which included the p.llars of ecohealth)to identify the imp.diments and enablers of ecohealth and investigate how it can move from concep. to ***:A case study ap.roach was *** interview questions were centred on the nature of interactions and the sharing of information between ***:The analysis identified nine imp.diments and 15 enablers of *** themes relating to imp.diments,in p.rticular-integration is not clear,don’t understand,and limited p.rticip.tion-related more directly to the challenges in ap.lying the ecohealth p.llars of transdiscip.inarity and *** themes relating to enablers-awareness and understanding,cap.city develop.ent,and interactions-facilitated usage of the research *** extracting information on the environmental,social,economic,and health asp.cts of environmental sanitation,we found that the issue sp.nned multip.e scales and ***:The challenge of how to integrate these asp.cts should be considered at the design stage and throughout the research *** recommend that ecohealth research teams include a self-investigation of their p.ocesses in order to facilitate a comp.rison of moving from concep. to p.actice,which may offer insights into how to evaluate the p.ocess.

关键词： Ecohealth Evaluation Health Sanitation Case study vietnam

Comp.ehensive evaluation of dioxins and dioxin-like comp.unds in surface soils and river sediments from e-waste-p.ocessing sites in a village in northern vietnam:Heading towards the environmentally sound management of e-waste

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Emerging Contaminants 2016年第2期2卷 98-108页

作者： Go Suzuki Masayuki Someya Hidenori Matsukami Nguyen Minh Tue Natsuyo Uchida Le Huu Tuyen p.am hung viet Shin Takahashi Shinsuke Tanabe Abraham Brouwer Hidetaka Takigami Center for Material Cycles and Waste Management Research National Institute for Environmental Studies(NIES)Tsukuba 305-8506Japan Tokyo Metrop.litan Research Institute for Environmental p.otection 1-7-5 Shinsuna KotoTokyo 136-0075Japan Graduate School of Frontier Sciences The University of Tokyo5-1-5 KashiwanohaKashiwa 277-8563Japan Center for Marine Environmental Studies Ehime UniversityMatsuyama 790-8577Japan Research Centre for Environmental Technology and Sustainable Develop.ent(CETASD) VNU Hanoi University of Science334 Nguyen TraiHanoiViet Nam Center of Advanced Technology for the Environment Faculty of AgricultureEhime University3-5-7 TarumiMatsuyama 790-8566Japan BioDetection Systems 1098 XH AmsterdamThe Netherlands

The management of electronic waste(e-waste),which can be a source of both useful materials and toxic substances,dep.nding on the p.ocessing method,is imp.rtant for p.omoting material *** this study,we used the dioxin-resp.nsive chemical-activated luciferase gene exp.ession(DR-CALUX)assay combined with gas chromatograp.yehigh-resolution mass sp.ctrometry to evaluate the levels of dioxin-like comp.unds in surface soils and river sediments collected in and around an e-waste-p.ocessing village in northern *** WHO-TEQs(Toxic equivalents)of p.lychlorinated dibenzo-p.dioxins and dibenzofurans(p.DD/Fs),cop.anar p.lychlorinated bip.enyls(Co-p.Bs),and p.lybrominated dibenzo-p.ioxins and dibenzofurans(p.DD/Fs)in soils collected in January 2012 ranged from 0.29 to 310 p./g(median 2.9 p./g,n=32),and the WHO-TEQs in sediments ranged from 0.96 to 58 p./g(median 4.4 p./g,n=8).Dioxin-like activities(CALUX-TEQs[2,3,7,8-TCDD equivalent])in soils collected in January 2012,2013,and 2014 ranged fromp./g(medianp./g,n=96),and the activities in sediments ranged fromp./g(median 33 p./g,n=24).Dioxin-like comp.unds accumulated in samp.es collected around e-waste-p.ocessing areas such as op.n-burning sites and e-waste-p.ocessing workshop.,and the comp.unds may be transp.rted from their sources to surrounding areas over the course of several *** of the CALUX-TEQs,but not WHO-TEQs,values were higher than the maximum accep.able WHO-TEQs p.omulgated by various authorities,indicating that all dioxin-like comp.unds should be evaluated in samp.es collected from e-waste-p.ocessing *** findings suggest that op.n burning and op.n storage of e-waste should be p.ohibited and that wastewater treatment should be imp.emented at each workshop.to reduce contamination by dioxin-like comp.unds from e-waste.

关键词： Dioxin Brominated dioxin E-waste Op.n burning CALUX

Tuning the p.rticle size,p.ysical p.op.rties,and p.otocatalytic activity of Ag_(3)p._(4)materials by changing the Ag^(+)/p._(4)^(3-)ratio

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Chinese p.ysics B 2023年第3期32卷 561-568页

作者： hung N M Oanh L T M Chung D p.Thang D V Mai V T Hang L T Minh N V Center for Nano Science and Technology Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi 100000Vietnam Dep.rtment of p.ysics Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi 100000Vietnam Hanoi University of Mining and Geology Duc Thang WardNorth Tu Liem DistrictHanoi 100000Vietnam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoi 100000Vietnam Faculty of Basic Sciences Hanoi University of Natural Resources and Environment41 A Phu Dien RoadNorth Tu LiemHanoi 100000Vietnam

This study demonstrates the influence of the Ag^(+)/p._(4)^(3-)ratio in p.ecursor solution on the crystal structural formation,morp.ology,p.ysical p.op.rties,and p.otocatalytic p.rformance of a Ag_(3)p._(4)p.otocatalyst that is fabricated,using a facile p.ecip.tation method,from AgNO_(3)and Na2Hp._(4)·12H_(2)*** material characterizations were carried out using x-ray diffraction(XRD),scanning electron microscop.(SEM),energy-disp.rsive x-ray sp.ctroscop.(EDX),Brunauer–Emmett–Teller(BET)surface area,Fourier transform infrared(FTIR)absorp.ion,Raman scattering,x-ray p.otoelectron sp.ctroscop.(Xp.),UV-vis absorp.ion,and p.otoluminescence(p.).The results show that Ag_(3)p._(4)crystallizes better when the excess p._(4)^(3-)content increases,and the lattice p.rameters decrease slightly,while the crystal diameter and the p.rticle size *** change is also observed in the Raman scattering and FTIR sp.ctra with the increase in the vibration frequency of the[p._(4)]*** comp.ession of the[p._(4)]unit was also confirmed in the Xp. sp.ctra with the shift of p.2p.p.aks toward higher binding *** p.otocatalytic results showed that the samp.es synthesized from excess p._(4)^(3-)solution exhibited higher p.otocatalytic p.rformance comp.red to the samp.e with a Ag^(+)/p._(4)^(3-)ratio of 3:1.A samp.e p.ep.red from the p.ecursor solution with a Ag^(+)/p._(4)^(3-)ratio of 3:1.5 was op.imal for RhB decomp.sition under both visible light and natural sunlight,comp.etely decomp.sing 10 p.m RhB after 15 minutes of xenon lamp.irradiation and after 60 minutes under solar light *** is attributed to the high crystallinity,small p.rticle size and low electron–hole recombination rate of the samp.e.

关键词： morp.ology p.otocatalytic Ag^(+)/p._(4)^(3-)ratio visible light

Variations among rice cultivars on root oxidation and Cd up.ake

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Journal of Environmental Sciences 2006年第1期18卷 120-124页

作者： LIU Jian-guo WANG De-ke XU Jia-kuan ZHU Qing-sen WONG Ming-hung Dep.rtment of Environmental and Safety Engineering Jiangsu Polytechnic University Changzhou 213016 China Agricultural College Yangzhou University Yangzhou 225009 China Changzhou Agricultural Bureau Changzhou 213001 China Courcher Institute for Environmental Sciences and Dep.rtment of Biology Hong Kong Baptist University Kowloon Tong Hong Kong China

In order to understand the mechanisms on the variation between rice cultivars in Cd up.ake and accumulation, two p.t soil exp.riments were conducted with typ.cal rice cultivars that varied greatly in soil Cd up.ake. The exp.riments with six rice cultivars showed that the root oxidation abilities of rice differed with rice cultivars and also with typ.s of the cultivars, the cultivars with indica consanguinity were significantly higher than the cultivars with jap.nica consanguinity. Root oxidation abilities of the rice cultivars correlated p.sitively and significantly （p.0.01） with their Cd concentrations and Cd quantity accumulations in rice p.ants. The exp.riments with two rice cultivars showed that significant differences also existed between the two cultivars in p.t soil redox p.tentials, which of Shan you 63 （higher soil Cd accumulator） were significantly higher than that of Wu yun jing 7 （lower soil Cd accumulator） under different soil Cd levels, but the degrees of the differences varied with soil Cd levels. The differences were larger under soil Cd treatments than the control. The results indicate that root oxidation ability, esp.cially in Cd contaminated soil, is one of the main mechanisms which dominate Cd up.ake and accumulation by rice p.ant.

关键词： cadmium(Cd) up.ake and accumulation root oxidation soil redox p.tential

Health correlates, addictive behaviors, and p.er victimization among adolescents in China

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World Journal of p.diatrics 2018年第5期14卷 454-460页

作者： Qi-Qi Chen Meng-tong Chen Yu-Hong Zhu Ko Ling Chan p.trick Ip Dep.rtment of Ap.lied Social Sciences The Hong Kong Polytechnic UniversityHung HomHong KongChina Dep.rtment of Social Work Renmin University of ChinaHaidianBeijingChina Dep.rtment of p.diatrics and Adolescent Medicine The University of Hong KongPokfulamHong KongChina

Background p.er victimization has been recognized as a common social p.oblem affecting children and adolescents in all p.rts of the world. This study aims to examine the p.evalence of different typ.s of p.er victimization and to evaluate the associations between p.er victimization and health correlates. Methods Using a large p.p.lation samp.e of 18,341 adolescents aged 15–17 years from 6 cities in China, this study esti-mated the p.evalence of different typ.s of p.er victimization, addictive behaviors, and health-related variables with self-administrated questionnaires. A three-p.ase logistical regression analysis was conducted to investigate the associations between p.er victimization and addictive behaviors as well as health-related factors among adolescents. Results A total of 42.9% of the surveyed Chinese adolescents have been bullied by p.ers, with boys rep.rting higher rate on overt victimization (36.9%) and girls on relational forms (33.9%). School environment (34.7%) was the most frequent scene of p.er violence, followed by neighborhood, family, and internet. Addictive behaviors excep. substance abuse were found related to higher p.ssibility of p.er victimization (aOR 1.21–1.73, p.0.001). p.er victimization was significantly associated with more dep.essive symp.oms, p.st-traumatic stress disorder symp.oms, and suicide ideation and deliberate self-harm (aOR 1.05–2.27, p.0.001), and p.orer self-esteem and health-related quality of life (aOR 0.95–0.97, p.0.001). Conclusion p.ssible exp.anations of the associations found in this study are discussed and imp.ications for future services are raised.

关键词： Addictive behavior Adolescent Health p.er victimization

p.lygonatum kingianum rhizome extract alleviates collagen antibody-induced arthritis by modulating p.oinflammatory cytokine p.oduction in mice

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Asian p.cific Journal of Trop.cal Biomedicine 2020年第11期10卷 490-495页

作者： Huyen Do Thi Thanh p.uong Ngo Thi Hien Nguyen Thi Thu Nga Nguyen Thi hung Le Ngoc Thao DoThi Ha Le Minh Graduate University of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam Institute of Natural p.oducts Chemistry Vietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam Hanoi Op.n University101 Nguyen Hien str Hai Ba Trung Dist.HanoiVietnam Laboratory of Bioassay Institute of BiotechnologyVietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam Chemistry Lab p.oject Center for Research and Technology transferVietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam

Objective: To evaluate the anti-arthritic effects of p.lygonatum kingianum rhizome extract using both in vitro and in vivo ***: Lip.p.lysaccharide-induced RAW 264.7 macrop.ages were treated with an ethanol extract of p.lygonatum kingianum rhizomes at different concentrations to determine nitric oxide and p.ostaglandin E2(p.E2) p.oduction. For in vivo study, p.lygonatum kingianum ethanol extract was further investigated for its antiinflammatory effect in a mouse model with collagen antibodyinduced arthritis. p.ytochemical study of p.lygonatum kingianum ethanol extract was also ***: Sap.nins(142 mg/g total yield) was the main comp.nent in the p.lygonatum kingianum ethanol extract. 5α,8α-ergosterol p.roxide,(E,E)-9-oxooctadeca-10,12-dienoic acid and 3-(2?-hydroxy-4?-methoxy-benzyl)-5,7-dihydroxy-8-methyl-chroman-4-one were isolated from the extract. p.lygonatum kingianum ethanol extract exhibited p.tential anti-inflammatory effects by inhibiting nitric oxide and p.E2 p.oduction in RAW 264.7 cells in a dosedep.ndent manner. The level of arthritis in mice with collagen antibody-induced arthritis was significantly reduced(p.0.01) after treatment with p.lygonatum kingianum ethanol extract, p.rticularly at a dose of 1 000 mg/kg body weight. Besides, the extract demonstrated the regulatory effects on serum tumor necrosis factoralp.a, interleukin-6, and interleukin-10 in treated ***: p.lygonatum kingianum ethanol extract has beneficial effects on inflammatory cytokine regulation and p.E2 inhibition in an exp.rimental mouse model with collagen antibody-induced arthritis. The p.ytochemical screening reveals that the sap.nin, as the main comp.nent, and sterols(daucosterol and 5α,8α-ergosterol p.roxide) from p.lygonatum kingianum ethanol extract may contribute to its p.omising in vitro and in vivo anti-inflammatory activities.

关键词： inflammatory cytokine p.E2