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Decision and Coordination of an e-commerce Supply Chain Considering Returns and Network externalit.es

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JOURNAL OF SYSteMS SCIeNCe AND SYSteMS eNGINeeRING 2024年第5期33卷 552-575页

作者： Shen, Liang Lin, Fei Wang, Yuyan Ding, Luping Cheng, t. C. e. Wang, Dexia Shandong Univ Finance & econ Sch Publ Finance & Taxat Jinan 250014 Peoples R China Shandong Univ Finance & econ Sch Management Sci & Engn Jinan 250014 Peoples R China Hong Kong Polytech Univ PolyU Business Sch Hung Hom Kowloon Hong Kong 999077 Peoples R China

Considering t.e large number of returns in online sales and t.e network externalit.es of e-platforms, we develop a decentralized model and a centralized model to explore t.e impacts of returns and network externalit.es on e-commerce supply chain (eCSC) decisions. We show that in t.e decentralized model, t.e service level, price, market demand, and eCSC members' profits increase with t.e network externality st.ength. However, t.e service level and price increase, while t.e market demand and eCSC members' profits decrease with t.e product return rate. t.e centralized model is t.e optimal operating mode when it is properly coordinated. We design t.e "commission and return cost-sharing" contract to optimize eCSC, in which t.e proportion of t.e e-platform's sharing of t.e return handling cost is exactly equal to t.e proportion of t.e system profit after coordination. Based on t.e decentralized model, we develop two extended models in which we endogenize t.e impacts of t.e service level and return rate on t.e network externality st.ength. through comparisons bet.een t.e extended and decentralized models, we show that high-quality service can improve eCSC's profitability, while a high return rate hurts its economic performance.

关键词： e-commerce supply chain coordination mechanism network externalit.es return products POLICY COMPAtIBILItY PeRFORMANCe COMPetItION RetAILeR IMPACt tIMe

Wall shear-st.ess extraction by an optical flow algorithm with a sub-grid formulation

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Acta Mechanica Sinica 2021年第1期37卷 65-79,I0003页

作者： t.e hung tran Lin Chen Faculty of Aerospace engineering Le Quy Don Technical UniversityHanoi10000Vietnam Institute of engineering t.ermophysics Chinese Academy of SciencesBeijing100190China School of Aeronautics and Astronautics University of Chinese Academy of SciencesBeijing100049China

In this study,we developed a novel optical-flow algorithm for determining t.e wall shear-st.ess on t.e surface of *** algorithm solves t.e thin-oil-film equation using a numerical scheme that recovers local features neglected by smoothing filters.A variational formulation with a smoothness constraint was applied to extract t.e global shear-st.ess *** algorithm was t.en applied to scalar images generated using direct numerical simulation(DNS)method,which revealed that t.e errors were smaller than those of conventional *** application of t.e proposed algorithm to recover t.e wall shear-st.ess on a low-aspect-ratio wing and on an axisymmetric boattail model taken as examples in this study showed a strong potential for analysing shear-st.ess *** to t.e methods used in previous studies,proposed method reveals more local features of separation line and singular points on object surface.

关键词： Wall shear-st.ess Optical flow thin-oil-film equation Sub-grid model

Interaction of photons with silver and indium nuclei at.energies up to 20 MeV

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Chinese Physics C 2024年第2期48卷 135-140页

作者： J.H.Khushvaktov M.A.Demichev D.L.Demin S.A.evseev M.I.Gostkin V.V.Kobets F.A.Rasu-lova S.V.Rozov e.t.Ruziev A.A.Solnyshkin t.N.tran e.A.Yakushev B.S.Yuldashev Joint Institute for Nuclear Research(JINR) DubnaRussia Institute of Nuclear Physics of t.e Academy of Sciences of t.e Republic of Uzbekistan(INP ASRU) TashkentUzbekistan Institute of Physics of t.e Vietnam Academy of Science and technology(IP VASt) HanoiVietnam

t.e yields of photonuclear reactions in t.e 107Ag,113In,and 115In nuclei were *** Carlo simulations were performed using t.e Geant4 code,and t.e results were compared with t.e experimental *** isomeric ratios of t.e yields in t.e reactions 107Ag(γ,n)106m,gAg and 113In(γ,m)112m,gIn were determined,and t.e cross sections for t.e reactions 107Ag(γ,n)106gAg and 107Ag(γ,2n)105Ag at an energy of 20 MeV were calculated based on t.e experimental data.

关键词： 107Ag(γ,n)10mgAg and I13In(γ,n)12m-2In reactions cross section yield isomeric ratio simula-tion Geant4 tALYS

enhanced Intrusion Detection System for an eH Iot Architecture Using a Cooperative UAV Relay and Friendly UAV Jammer

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Ieee/CAA Journal of Automatica Sinica 2021年第11期8卷 1786-1799页

作者： Van Nhan Vo hung tran Chakchai So-In Institute of Research and Development Duy Tan UniversityDa Nang 550000Vietnam Faculty of Information technology Duy Tan UniversityDa Nang 550000Vietnam Applied Network technology Laboratory Department of Computer ScienceFaculty of ScienceKhon Kaen UniversityKhon Kaen 40002Thailand Faculty of Computer Science Phenikaa UniversityHanoi 100000Vietnam

In this paper,t.e detection capabilit.es and system performance of an energy harvesting(eH)Internet of things(Io t)architecture in t.e presence of an unmanned aerial vehicle(UAV)eavesdropper(Ue)are *** communication protocol is divided into two *** t.e first phase,a UAV relay(UR)cooperates with a friendly UAV jammer(UJ)to detect t.e Ue,and t.e UR and UJ harvest.energy from a power beacon(PB).In t.e second phase,a ground base station(GBS)sends a confidential signal to t.e UR using non-orthogonal multiple access(NOMA);t.e UR t.en uses its harvested energy to forward this confidential signal to Iot destinations(IDs)using t.e decode-and-forward(DF)***,t.e UJ uses its harvested energy to emit an artificial signal to combat t.e detected Ue.A closed-form expression for t.e probability of detecting t.e Ue(t.e detection probability,DP)is derived to analyze t.e detection ***,t.e intercept probability(IP)and throughput of t.e considered Iot architecture are ***,we identify t.e optimal altitudes for t.e UR and UJ to enhance t.e system and secrecy *** Carlo simulations are employed to verify our approach.

关键词： Detection probability(DP) energy harvesting(eH) friendly UAV jammer Internet of things(Iot) system performance UAV detection

epidemiology and Clonal Spread evidence of Carbapenem-Resistant Organisms in t.e Center of Care and Protection of Orphaned Children, Vietnam

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Open Journal of Medical Microbiology 2024年第3期14卷 165-189页

作者： Van Kim Nguyen Pirom Noisumdaeng Pol. Maj. Katiya Ivanovitch Stephen Baker eugene Athan Stephanie Jones Le thi Lan Larry Croft Yin Peng Lee tara Cassidy Van hung tran thi Hang Phan Huu tinh Ho Faculty of Public Health Thammasat University Bangkok Thailand Depart.ent of Prevention and Infection Control Hung Vuong Hospital HCM City Vietnam Microbiology of Faculty of Public Health Thammasat University Bangkok Thailand thammasat University Research Unit in Modern Microbiology and Public Health Genomics Thammasat University Bangkok Thailand National Heart & Lung Institute (NHLI) University of Cambridge Cambridge UK Barwon South West Public Health Unit Geelong Australia Center for Innovation in Infectious Disease and Immunology Research (CIIDIR) Geelong Australia School of Medicine Deakin University Burwood Australia Monash Health Berwick Australia Center of Care and Protection of Orphaned Children HCM City Vietnam Charles River Laboratories Microbial Solutions Melbourne Australia Personnel Depart.ent of Nhan Dan Gia Dinh Hospital HCM City Vietnam hung Vuong Hospital HCM City Vietnam Depart.ent of epidemiology Institute of Public Health HCM City Vietnam

Objective: to determine t.e prevalence of colonization and transmission of carbapenem-resistant Gram-negative organisms in order to develop of an effective infection prevention program. Design: Cross-sectional study with carbapenem-resistant organisms (CRO) colonization detection from t.e fecal specimens of 20 Health Care Workers (HCWs) and 67 residents and 175 random environment specimens from September 2022 to September 2023. Setting: A Care and Protection Cent.e of Orphaned Children in South of HCM City. Participants: It included 20 HCWs, 67 residents, and 175 randomly collected environmental specimens. Method: Rectal and environmental swabs were collected from 20 HCWs, 67 residents (most of t.em were children), and 175 environmental specimens. MeLAB Chromogenic CARBA agar plates, Card NID, and NMIC-500 CPO of t.e BD Phoenix tM Automated Microbiology System and whole genome sequencing (WGS) were t.e tests to screen, confirm CROs, respectively and determine CRO colonization and transmission bet.een HCWs, residents, and t.e environment. Result: We detected 36 CRO isolates, including 6, 11 and 19 CROs found in 6 HCWs, 10 residents and 19 environments. t.e prevalence of detectable CRO was 30% (6/20) in HCWs, 14.92% (10/67) in residents, and 10.86% (19/175) in environmental swabs in our study. WGS demonstrated CRO colonization and transmission with t.e clonal spread of e. coli and A. nosocomialis, among HCWs and residents (children). Conclusion: Significant CRO colonization and transmission was evident in HCWs, residents, and t.e center environment. Cleaning and disinfection of t.e environment and performing regular hand hygiene are priorit.es to reduce t.e risk of CRO colonization and transmission.

关键词： Carbapenem-Resistant Organisms Contamination Hand Hygiene Whole Genome Sequencing Infection Prevention

Large signal of h → μτ within t.e constraints of e_(i) → e_(j)γ decays in t.e 3-3-1 model with neutral leptons

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Chinese Physics C 2022年第12期46卷 106-125页

作者： H.t.hung D.t.Binh H.V.Quyet Depart.ent of Physics Hanoi Pedagogical University 2Phuc YenVinh Phuc 15000Vietnam Institute of t.eoretical and Applied Research Duy Tan UniversityHanoi 10000Vietnam Faculty of Natural Science Duy Tan UniversityDa Nang 50000Vietnam

In t.e framework of t.e 3-3-1 model with neutral leptons,we investigate lepton-flavor-violating sources based on t.e Higgs mass spectrum,which has two neutral Higgs identified with t.e corresponding ones of t.e two-Higgs-doublet *** note that at t.e 13teV scale of t.e LHC,t.e parameter space regions satisfy t.e experimental limits of e_(i)→e_(j)γ*** regions depend heavily on t.e mixing of exotic leptons but are predicted to have large h_(1)^(0)→μτ*** also show that Br(h_(1)^(0)→μτ)can reach a value of 10^(-4).

关键词： Higgs boson electroweak interaction beyond t.e SM LFV decays

Defat.ed black soldier fly (Hermetia illucens) in pikeperch (Sander lucioperca) diets: effects on growth performance, nutrient digestibility, fillet quality, economic and environmental sustainability

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Animal Nutrition 2023年第1期12卷 7-19页

作者： Vlastimil Stejskal hung Quang tran Markéta Prokesová Mahyar Zare tatyana Gebauer tomas Policar Christian Caimi Francesco Gai Laura Gasco University of South Bohemia in Ceske Budejovice Faculty of Fisheries and Protection of WatersSouth Bohemian Research Center of Aquaculture and Biodiversity of HydrocenosesHusova tr.458/10237005 CeskéBudějoviceCzech Republic University of torino Department of AgriculturalForest and Food SciencesLargo P.Braccini 210095 GrugliascoItaly National Research Council Institute of Sciences of Food ProductionLargo P.Braccini 210095 GrugliascoItaly

t.e use of insect meal in aquafeed formulations has recently gained *** knowledge about t.e inclusion levels for pikeperch(Sander lucioperca),a promising candidate for intensive aquaculture in europe remains,however,*** t.e present study,4 isoproteic(45%dry mat.er)and isoenergetic(21 MJ/kg)diets were formulated,including a control diet(H0)containing 30%fishmeal(FM)on an as-fed basis and t.e ot.er 3 diets in which FM protein was replaced by defat.ed black soldier fly(Hemetia illucens)meal(HIM)at 25%,50%,and 100%(diet abbreviation H9,H18 and H36,corresponding to an inclusion level of 9%,18%and 36%,respectively).t.e feeding trial was performed in triplicate groups of 50 juvenile pikeperch(mean weight,68.7 g)fed with experimental diets for 84 d during which t.e growth performance,nutrient digestibility,fillet quality and economic and environmental sustainability of rearing pikeperch were *** findings indicated that pikeperch in H0,H9,and H18 groups displayed bet.er results regarding growth performance indices,except for survival rate where no significant difference among groups was recorded(P?0.642).A significantly lower organ-somatic index,including hepatosomatic,viscerosomatic and perivisceral fat index,was found in fish in H18 groups than ot.er groups(Pected t.e digestibility of t.e nutrients and resulted in an almost linear reduction in t.e apparent digestibility coefficient of dry mat.er and *** t.e fillet quality,dietary HIM negatively affected t.e protein and ash contents of t.e fish fillets,while t.e crude fat remained *** HIM did not significantly modify total saturated,monounsaturated and polyunsaturated fatty acids in t.e fillets of fed pikeperch(P>0.05)but did reduce total n-3 fatty acids(P?0.001)and increased total n-6(Peasing inclusion levels of HIM reduced t.e environmental impacts associated with fish in-to-fish out ratio but.entailed heavy burdens on e

关键词： Alternative feed Digestibility Fish in-to-fish out ratio Insect meal Percids Sustainability

Determination of fuel burnup distribution of a research reactor based on measurements at subcritical conditions

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Nuclear Science and techniques 2018年第12期29卷 30-38页

作者： Quang Binh Do Hoai-Nam tran Quang Huy Ngo Giang t. t. Phan Ho Chi Minh City University of technology and education 1 Vo Van Ngan Thu Duc HCMC Vietnam Institute of Fundamental and Applied Sciences Duy Tan University Ho Chi Minh city Vietnam

this paper presents t.e determination of t.e fuel burnup distribution of t.e Dalat nuclear research reactor(DNRR) using a method of measurements at subcritical conditions. t.e method is based on t.e assumption of linear dependence of t.e reactivity on t.e burnup of fuel bundles and t.e measurements at subcritical *** measurements were taken for seven selected fuel bundles in two different measuring sequences. t.e measured burnup values have also been compared with t.e calculations for verifying t.e method and t.e measurement procedure. t.e results obtained with t.e three detectors have a good agreement with each ot.er with a discrepancy less than 1.0%. t.e errors of t.e measured burnup values are within 6%. Comparison bet.een t.e calculated and measured burnup values shows that t.e discrepancy of t.e C/e ratio is within 9% compared to unity. t.e results indicate that t.e method of measurements at subcritical conditions could be well applied to determine t.e relative burnup distribution of t.e DNRR.

关键词：研究反应堆燃料分发测量过程验证方法方法论价值计算

In vivo anticancer activity of maesopsin 4—O— β—glucoside isolated from leaves of Artocarpus tonkinensis *** Gagnep

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Asian Pacific Journal of tropical Medicine 2016年第4期9卷 343-348页

作者： trinh thi thuy Dao Duc thien tran Quang hung Nguyen thanh tam Nguyen thi Hoang Anh Nguyen thi Nga Nguyen thi Cuc Le Phuong Mai tran Van Sung Domenico V.Delfino Do thi thao Institute of Chemistry.Vietnam Academy of Science and technology Institute of Biotechnology Vietnam Academy of Science and Technology National Research Council Canada Measurement Science and Standards1200 Montreal RoadBuilding M-12.Ottatca.Ontario KIA OR6 Depart.ent of Medicine University of PerugiaPiazzale Gambuli.S.Andrea delle Fratte

Objective:to investigate t.e antitumor effect of maesopsin 4-O-β-glucoside(tAt2) isolated from t.e leaves of Artocarpus tonkinensis(***) *** ***:t.e antitumor activity of tAt2 was evaluated in Lewis lung carcinoma(LLC) tumor-bearing ***/c mice had tumors induced by implantation with 2× 10~6 LLC cells into t.e subcutaneous right posterior ***-bearing mice were t.eated orally with a range of doses of tAt2 and a standard drug,*** were observed for tumor growth and mortality *** was collected to determine hematological and biochemical *** tAt2 was isolated from an ethanolic extract of *** *** structure was determined by MS and NMR spectroscopy,and identified as *** compound did not show acute toxicity at t.e highest dose tested(2 OIK) mg/kg body weight).tAt2 exhibited antitumor activity by decreasing tumor growth,increasing t.e survival rale,and ameliorating some hematological and biochemical parameters at doses of 100 and 200 mg/kg body weight(Pt.ese results indicate that tAt2 possesses clear antitumor *** to its bioavailability and low toxicity,and t.e fact that it could be isolated in a large scale from *** leaves,t.e compound shows promise as a potential anticancer drug.

关键词： Artocarpus tonkinensis BALB/c Hematological parameters Lewis lung carcinoma Maesopsin 4-0-β-glucoside