检索结果-南通市图书馆

Cybersecurity 2024年第2期7卷 44-67页

作者： Qi Zhang Zhixiang Liang Shujuan Ji Benyong Xing Dickson K.W.chiu Shandong Provincial Key Laboratory of Wisdom 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 with fake reviewers(also called spammers)to write fake reviews for multiple products to either demote competitors or promote their products'reputations,forming a gray industry *** detect spammer groups in a heterogeneous network with 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 with cross-product attacks and do not jointly consider structural and attribute features,and structure-attribute correlation,resulting in poorer detection ***-fore,we propose a collaborative training-based spammer group detection algorithm by constructing a heterogene-ous induced sub-network based on the target product set to detect cross-product attack spammer *** jointly consider all available features,we use the collaborative training method to learn the feature representations of *** addition,we use the DBSCAN clustering method to generate candidate groups,exclude innocent ones,and rank them to obtain spammer *** experimental results on real-world 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 network Collaborative training DBSCAN

白藜芦醇治疗多囊卵巢综合征作用机制研究进展

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中国中西医结合杂志 2024年

作者：王俐榕马呈呈万天恩 chi chiu Wang 韩延华吴效科常惠黑龙江中医药大学第一临床医学院黑龙江中医药大学附属第一医院妇一科香港中文大学妇产科学系

多囊卵巢综合征（polycystic ovary syndrome,PCOS）是一种常见的女性内分泌疾病，影响着全球5%～20%的育龄妇女，其临床表现为高雄激素血症、稀发排卵或无排卵和卵巢多囊样改变[1]。根据临床症状可归于中医“月经后期”“不孕”“闭经...

多囊卵巢综合征（polycystic ovary syndrome,PCOS）是一种常见的女性内分泌疾病，影响着全球5%～20%的育龄妇女，其临床表现为高雄激素血症、稀发排卵或无排卵和卵巢多囊样改变[1]。根据临床症状可归于中医“月经后期”“不孕”“闭经”等范畴。目前PCOS的一线治疗为生活方式干预，其次为药物治疗，但其作用效果有限[2]。白藜芦醇（resveratrol,Res）是一种来源于葡萄和浆果的天然多酚有机化合物，近年研究发现，Res对PCOS具有改善胰岛素抵抗（insulin resistance,IR），调节血脂异常，

关键词：

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 want someone's *** you have to solve a **... 详细信息

关键词： something someone You

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Eating Hot Pot

空中英语教室（初级版．大家说英语） 2024年第11期 17-20,52,56页

作者： Maria chiu 不详

Hot pot is a popular chinese *** is delicious!You sit at a table with a pot of hot ***,the broth has to *** you can cook many different things in *** people put seafood and different kinds of meat in hot *** such as cabbage and corn are delicious in it,*** also add mushrooms,tofu and noodles to hot *** some cooked food from your hot pot with your *** it in some sauce and enjoy!

关键词： corn stick mushroom

Introduction of rare-earth element Sc in alloy design to modify wear 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 Wu Jing-Jie Guo Guo National Key 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,which induces the hard secondary phase to increase hardness and strength to improve the wear features,is a feasible approach for developing wear-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 wear behaviors are ***-doped HEA series contain the primary body-centered cubic(BCC)and eutectic phases,in which the eutectic phase is composed of the alternately grown 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 wear heating prevent the direct contact between friction pair and HEAs,thus inducing a decreased wear rate from 6.82×10^(−5) to 3.47×10^(−5)m^(3)·N^(−1)·m^(−1).Moreover,the wear mechanism changes from adhesive wear,abrasive wear and oxidative wear to abrasive wear and oxidative wear.

关键词： High entropy alloy(HEA) Laves phase Hardness Wear mechanism

A Hf-doped dual-phase high-entropy alloy: phase evolution and wear 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 Wu Jing-Jie Guo National Key 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 ***,two and/or more types of phases in HE As possibly induce the desired microstructure features,which contribute to improving the wear properties of HE ***,we prepare a series of(AlCoCrFeNi)_(100-x)Hf_(x)(x=0,2,4and 6;at%) HEAs and concern their phase compositions,micro structures and wear *** 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 wear heating contribute to an 85.5% decrease in wear 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 wear mechanism from abrasive wear,mild oxidative wear and adhesive wear to oxidative wear and adhesive wear.

关键词： High entropy alloy Laves phase Hardness Wear mechanism

Cranberry Sauce Recipe

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空中英语教室（初级版．大家说英语） 2024年第11期 27-29,53页

作者： Maria chiu 不详

Cranberry Sauce Ingredients 1 cupsugar 1/2 cup orange juice 1/2cup water 4cups fresh orfrozen cranberries 1 piece of orange peel Directions *** sugar,orange juice and water in a *** it boil.

关键词： orange sugar frozen

Make a Rock Photo Holder

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空中英语教室（初级版．大家说英语） 2024年第9期 26-27,53页

作者： Maria chiu 不详

一、拿一块光滑的石头和一些铁丝、颜料和画笔。二、用一种颜色为石头涂色,然后晾干。三、拿另一种颜色的颜料和另一支画笔。四、在石头上画出图案,然后晾干。五、用铁丝的一端缠在石头上。六、把铁丝的另一端在一支笔上绕几圈。

关键词：

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Make a BOOKMARK

空中英语教室（初级版．大家说英语） 2024年第7期 32-33,54页

作者： Maria chiu 不详

句中cardstock“卡纸”和paper“纸”都是不可数名词,所以用法如下:1.前面不可以加不定冠词a;colorful paper.2.I need paper for my printer.我的打印机需要纸。

关键词： printer 不可数名词打印机

I Will See It Through

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空中英语教室（初级版．大家说英语） 2024年第11期 6-7,50页

作者： Maria chiu 不详

Being able to see is important,and so is learning phrases that use the word see!If you see to something,you make sure it gets *** may run into problems along the way,but you have to keep *** have to see it *** you see past something,you don't let it change your *** you see something in someone,you recognize that they have a lot to ***,you may want to watch a friend leave so you can say bye to *** you might see them off at the airport.

关键词： something airport Final