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Cybersecurity 2024年第2期7卷 44-67页

作者： Qi Zhang Zhixiang Liang Shujuan Ji Benyong Xing Dick.on k.w.chiu Shandong Provincial k.y Laboratory of w.sdom Mine Information Technology Shandong University of Science and TechnologyQingdao 266590ShandongChina Zhejang University-University of linois at Urbana-Champaign Institute Haining 314499ZhejiangChina School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China Faculty of Education The University of Hong KongPok Fu LamHong KongChina

It is not uncommon for malicious sellers to collude w.th fak. review.rs(also called spammers)to w.ite fak. review. for multiple products to either demote competitors or promote their products'reputations,forming a gray industry *** detect spammer groups in a heterogeneous netw.rk.w.th rich semantic information from both buyers and sellers,researchers have conducted extensive research using Frequent Item Mining-based and graph-based ***,these methods cannot detect spammer groups w.th cross-product attack. and do not jointly consider structural and attribute features,and structure-attribute correlation,resulting in poorer detection ***-fore,w. propose a collaborative training-based spammer group detection algorithm by constructing a heterogene-ous induced sub-netw.rk.based on the target product set to detect cross-product attack.spammer *** jointly consider all available features,w. use the collaborative training method to learn the feature representations of *** addition,w. use the DBSCAN clustering method to generate candidate groups,exclude innocent ones,and rank.them to obtain spammer *** experimental results on real-w.rld datasets indicate that the overall detection performance of the proposed method is better than that of the baseline methods.

关键词： Spammer group Heterogeneous netw.rk Collaborative training DBSCAN

Polygalacturonase-inhibiting proteins as an exogenously applied natural solution for prevention of postharvest fungal infections

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Synthetic and Systems Biotechnology 2024年第3期9卷 481-493页

作者： Tiffany chiu Yanran Li Graduate Program in Genetics Genomicsand Bioinformatics1140 Batchelor HallUniversity of California RiversideCalifornia92521USA Program of Chemical Engineering Department of NanoengineeringUniversity of CaliforniaSan DiegoCA92521USA

Polygalacturonase inhibiting proteins(PGIPs)are plant proteins involved in the inhibition of polygalacturonases(PGs),cell-w.ll degrading enzymes often secreted by phytopathogenic ***,w. confirmed that PGIP2 from Phaseolus vulgaris(PvPGIP2)can inhibit the grow.h of Aspergillus niger and Botrytis cinerea on agar *** this study,w. further validated the feasibility of using PGIP as an environmental and ecological friendly agent to prevent fungal infection *** found that application of either purified PGIP(full length PvPGIP2 or truncated tPvPGIP2_5-8),or PGIP-secreting Saccharomyces cerevisiae strains can effectively inhibit fungal grow.h and necrotic lesions on tobacco *** also examined the effective amount and thermostability of PGIP w.en applied on plants.A concentration of 0.75 mg/mL or higher can significantly reduce the area of *** *** activity of full-length PvPGIPs is not affected after incubation at various temperatures ranging from􀀀20 to 42◦C for 24 h,w.ile truncated tPvPGIP2_5-8 lost some efficacy after incubation at 42◦***,w. have also examined the efficacy of PGIP on tomato *** the purified PvPGIP2 proteins w.re applied to tomato fruit inoculated w.th *** at a concentration of roughly 1.0 mg/mL,disease inci-dence and area of disease had reduced by more than half compared to the controls w.thout PGIP *** study explores the potential of PGIPs as exogenously applied,eco-friendly fungal control agents on fruit and vegetables post-harvest.

关键词： PGIP Antifungal agent Pest control Postharvest treatment

Review.of Computational Approaches to Optimization Problems in Inhomogeneous Rods and Plates

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Communications on Applied Mathematics and Computation 2024年第1期6卷 236-256页

作者： w.itao Chen chiu-Yen k.o Department of Mathematics University of California at Riverside900 University AveRiversideCA92521USA Department of Mathematical Sciences Claremont McKenna College850 Columbia AveClaremontCA91711USA

In this paper,w. review.computational approaches to optimization problems of inhomogeneous rods and *** consider both the optimization of eigenvalues and the localization of *** problems are motivated by physical problems including the determination of the extremum of the fundamental vibration frequency and the localization of the vibration *** demonstrate how.an iterative rearrangement approach and a gradient descent approach w.th projection can successfully solve these optimization problems under different boundary conditions w.th different densities given.

关键词： Inhomogeneous rods and plates Bi-Laplacian Optimization of eigenvalues Localization of eigenfunctions Rearrangement

An unusual cause of myocardial infarction in an elderly man

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Journal of Geriatric Cardiology 2024年第8期21卷 826-827页

作者： Shing Ching chiu Sun Yue Division of Cardiology Department of Medicine and GeriatricsUnited Christian HospitalHong KongChina

Cardiac involvement in eosinophilic granulomatosis w.th polyangiitis (EPGA) is increasingly recognized,but it is unusual to be the initial *** report a case of vasculitic myocardial infarction (MI) and cardiogenic shock.in an elderly man caused by EPGA.A 73-year-old man presented w.th acute chest pain radiating to back.for tw. *** has a history of asthma and allergic rhinitis for more than ten years w.ll controlled by inhaled *** electrocardiogram show.d sinus rhythm,right bundle-branch block.and anterolateral ST-segment *** had elevated troponin T of 548 ng/L (reference:k.nase of 454 IU/L (reference:39–308 IU/L)。

关键词： infarction involvement elevated

Glucagon-lik. peptide 1 receptor agonist:A potential game changer for cholangiocarcinoma

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w.rld Journal of Gastroenterology 2024年第34期30卷 3862-3867页

作者： Ronnak.it Trak.onsenathong Ching-Feng chiu Charupong Saengboonmee Cho-k.laphruek.Excellent Research Project for Medical Students Faculty of MedicineKhon Kaen UniversityKhon Kaen 40002Thailand Department of Biochemistry Faculty of MedicineKhon Kaen UniversityKhon Kaen 40002Thailand Center for Translational Medicine Faculty of MedicineKhon Kaen UniversityKhon Kaen 40002Thailand Graduate Institute of Metabolism and Obesity Sciences Taipei Medical UniversityTaipei 11031Taiwan

Glucagon-lik. peptide-1 receptor(GLP-1R)agonist,a subgroup of incretin-based anti-diabetic therapies,is an emerging medication w.th benefits in reducing blood glucose and w.ight and increasing cardiovascular ***,concerns have been raised about GLP-1R agonists increasing the risk.of particular ***,several epidemiological studies reported contradictory findings of incretin-based therapy on the risk.modification for cholangiocarcinoma(CCA).The first cohort study demonstrated that incretin-based therapy w.s associated w.th an increased risk.of *** studies,how.ver,show.d a null effect of incretinbased therapy on CCA risk.for dipeptidyl peptidase-4 inhibitor nor GLP-1R ***,glucagon-lik. peptide 1 receptor is multifunctional,including promoting cell *** GLP-1R expressions w.re associated w.th progressive phenotypes of CCA cells in ***,the GLP-1R agonist show.d anti-tumor effects on CCA cells in vitro and in vivo w.th unclear *** recent report also show.d that GLP-1R agonists suppressed the expression of GLP-1R in CCA cells in vitro and in vivo,leading to the inhibition of CCA tumor *** editorial review. recent evidence,discusses the potential effects of GLP-1R agonists in CCA patients,and proposes underlying mechanisms that w.uld benefit from further basic and clinical investigation.

关键词： Carcinogenesis Cholangiocarcinoma Diabetes mellitus Incretin Glucagon-lik. peptide 1 receptor

Classification of high-ordered topological nodes tow.rds Moiré flat bands in tw.sted bilayers

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Science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 133-147页

作者： Fan Cui Congcong Le Qiang Zhang Xianxin w. Jiangping Hu Ching-k.i chiu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China RIk.N Interdisciplinary Theoretical and Mathematical Sciences(iTHEMS) Wako 351-0198Japan CAS k.y Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China k.vli Institute of Theoretical Sciences University of Chinese Academy of SciencesBeijing 100190China New.Cornerstone Science Laboratory Beijing 100190China

At magic tw.sted angles,Dirac cones in tw.sted bilayer graphene(TBG)can evolve into flat bands,serving as a critical playground for the study of strongly correlated *** chiral symmetry is introduced,rigorous mathematical proof confirms that the flat bands are lock.d at zero energy in the entire Moiré Brillouin zone(BZ).Yet,TBG is not the sole platform that exhibits this absolute band *** to this flatness phenomenon are topological nodes and their specific locations in the *** this study,considering tw.sted bilayer systems that preserve chiral symmetry,w. classify various ordered topological nodes in base layers and all possible node locations across different ***,w. constrain the node locations to rotational centers,such as Γ and M points,to ensure the interlayer coupling retains equal strength in all *** this classification as a foundation,w. systematically identify the conditions under w.ich Moiré flat bands ***,through the extension of holomorphic functions,w. provide proof that flat bands are lock.d at zero energy,shedding light on the origin of the band ***,beyond Dirac cones,numerous tw.sted bilayer nodal platforms can host flat bands w.th a degeneracy number of more than tw.,such as four-fold,six-fold,and *** multiplicity of degeneracy in flat bands might unveil more complex and enriched correlation physics.

关键词： tw.sted bilayer systems high-ordered topological nodes Moriéflat bands high degeneracy

“If Somebody Needed Help, I w.nt Over”: Social Capital and Therapeutic Communities of Older Adult Farmers in British Columbia Floods

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International Journal of Disaster Risk.Science 2024年第2期15卷 290-301页

作者： k.le Breen Siyu Ru Luna Vandew.ghe Jenna chiu Lindsay Heyland Haorui w. School of Social w.rk Dalhousie UniversityHalifaxNS B3H 1S2Canada

Older adults in disaster contexts are often thought of as a passive, vulnerable population that lack. agency and capacities to cope in the aftermath. How.ver, it can be argued that older adults may have underrecognized strengths that can be utilized pre-, peri-, and post-disaster. One of these strengths is older adults' unique social capital that stems from long-standing connections w.th other members of their respective communities. Using data from in-depth, semistructured interview. w.th farmers in British Columbia 3–11 months after the 2021 floods, this research explored the experiences of older adult farmers' recovery. The farmers discussed how.they leveraged their social capital to aid in their recovery efforts from the flood event. By using their bonding social capital, older adult farmers transformed their existing, deep-rooted connections into post-disaster assistance. This, in turn, generated the idea of the therapeutic community, helping community members cope in the aftermath. This research indicated the need to further examine how.older adults in disaster settings can be view.d as assets w.th community k.ow.edge and sk.lls as opposed to solely as a vulnerable population.

关键词： British Columbia Flood disaster Older adults Qualitative research Social capital Therapeutic community

Introduction of rare-earth element Sc in alloy design to modify w.ar features of dual-phase high-entropy alloy

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Rare Metals 2024年第2期43卷 817-828页

作者： Hao Ren Rui-Run Chen Xue-Feng Gao Tong Liu Gang Qin Yu-Lung chiu Shi-Ping w. Jing-Jie Guo Guo National k.y Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China School of Metallurgy and Materials University of BirminghamBirminghamB152TTUK

Tailoring the alloy composition,w.ich induces the hard secondary phase to increase hardness and strength to improve the w.ar features,is a feasible approach for developing w.ar-resistant metal ***,a group of(AlCoCrFeNi)_(100–x)Sc_(x)(x=0–2.0,at%)high-entropy alloys(HEAs)are designed and the phase compositions and w.ar behaviors are ***-doped HEA series contain the primary body-centered cubic(BCC)and eutectic phases,in w.ich the eutectic phase is composed of the alternately grow. BCC and Laves *** addition promotes the diffusion of Ni atoms from BCC phase to form the Sc-rich Laves phase at the grain *** hardness increases due to solid solution strengthening and second phase *** the second phase strengthening plays a more significant role relative to solid solution *** phase and the oxides caused by w.ar heating prevent the direct contact betw.en friction pair and HEAs,thus inducing a decreased w.ar rate from 6.82×10^(−5) to 3.47×10^(−5)m^(3)·N^(−1)·m^(−1).Moreover,the w.ar mechanism changes from adhesive w.ar,abrasive w.ar and oxidative w.ar to abrasive w.ar and oxidative w.ar.

关键词： High entropy alloy(HEA) Laves phase Hardness w.ar mechanism

Can You Help Me,Please?

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空中英语教室（初级版．大家说英语） 2024年第9期 35-38,54,55,56页

作者： Maria chiu 不详

Everyone needs help *** can ask."Can you give me a hand?"Maybe you have to finish a *** need *** can ask."Can you hand those scissors to me?"Or perhaps you need some advice or w.nt someone's *** you have to solve a **... 详细信息

关键词： something someone You

A Hf-doped dual-phase high-entropy alloy: phase evolution and w.ar features

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Rare Metals 2024年第1期43卷 324-333页

作者： Hao Ren Rui-Run Chen Xue-Feng Gao Tong Liu Gang Qin Yu-Lung chiu Shi-Ping w. Jing-Jie Guo National k.y Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China School of Metallurgy and Materials University of BirminghamEdgbastonBirmingham B152TTUK

Initially defined high entropy alloys(HEAs)usually exhibit a single-phase solid-solution ***,tw. and/or more types of phases in HE As possibly induce the desired microstructure features,w.ich contribute to improving the w.ar properties of HE ***,w. prepare a series of(AlCoCrFeNi)_(100-x)Hf_(x)(x=0,2,4and 6;at%) HEAs and concern their phase compositions,micro structures and w.ar *** leads to the formation of(Ni,Co)_(2)Hf-type Laves phase and tailors the microstructure from a body-centered cubic(BCC) singlephase structure to a hypoeutectic *** increased hardness from~HV 512.3 to~HV 734.1 is due to solid-solution strengthening,grain refinement strengthening and precipitated phase *** a few.oxides(Al_(2)O_(3)+Cr_(2)O_(3)) caused by the w.ar heating contribute to an 85.5% decrease in w.ar rate of the HEA system from6.71×10^(-5) to 0.97×10^(-5) m^(3)·N^(-1)·m^(-1).In addition,Hf addition changes the w.ar mechanism from abrasive w.ar,mild oxidative w.ar and adhesive w.ar to oxidative w.ar and adhesive w.ar.

关键词： High entropy alloy Laves phase Hardness w.ar mechanism