检索结果-南通市图书馆

Blockchain-based Internet of Musical Things

在线全文

学校读者我要写书评

暂无评论

Blockchain(Research and Applications) 2022年第3期3卷 60-69页

作者： Luca Turchet Chan Nam ngo Department of Information Engineering and Computer Science University of TrentoTrento38122Italy Faculty of Mathematics Informaticsand Mechanics of the University of WarsawWarsaw00-927Poland

Blockchain technology is impacting several industries,including the creative industries and those operating in the Internet of Things(IoT).Lately,researchers'attention has been devoted to the application of blockchain in the recorded music ***,thus far,no research has investigated the use of such technology in the Internet of Musical Things(IoMusT).The IoMusT is a new area emerging in industry and academy as an extension of the IoT to the musical *** IoMusT itself,as the IoT,is a distributed network of musical things,which are objects augmented with information and communication technologies serving a musical *** IoMusT vision requires,above all,IoT features such as decentralization,seamless authentication,transparency,data integrity and privacy,and self-maintenance,as well as the musical domain features such as efficient handling of copyrights and speed of royalties *** features can be brought by *** this paper,we investigate the integration of blockchain technology with the IoMusT,and we name such synthesis“Blockchain-based IoMusT”.We present a vision for this new paradigm in terms of the novel opportunities that are enabled,and we propose a set of application scenarios enabled by technological ***,we outline the open research directions in this promising area.

关键词： Internet of Musical Things Blockchain Music industry Privacy Security Internet of Things

Marketing Strategies Evaluation and Selection for Supply Chain Management Under Uncertainty

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第12期73卷 6535-6546页

作者： ngo Quang Trung Nguyen Van Thanh Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam

Sustainable marketing,often known as green marketing,has grown in popularity over the last two *** is currently putting pressure to encourage firms to become environmentally aware in multiple aspects like human and financial utilization,advertisement,and product *** types of companies are including many environmental campaigns into their own products to take advantage of the *** many scholars have addressed the relevance of green marketing as well as theory development,this study is unique in that it examines both techniques in a fuzzy *** integrated Fuzzy Multicriteria Decision Making Model(MCDM)of the analytical hierarchy process(AHP)and a Portuguese-acronymous MCDM method(TODIM)are used to select the best marketing strategy from five alternatives:(i)Green Design,(ii)Green Positioning,(iii)Green Pricing,(v)Green Packaging,and(iv)Green *** on criteria such as the scale of the green market,price parity,and the commitment of top *** for evaluating green marketing strategies was established in the study as contributions for decisionmakers in this field under unclarified *** research also a useful guideline for ranking alternatives in others industry.

关键词： Green marketing MCDM model sustainable marketing strategy

Functional characterization of the NF-κB transcription factor gene REL2 from Anopheles gambiae

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2007年第3期14卷 175-184页

作者： ngo T. HOA LIANGBIAO ZHENG Yale University School of Medicine Epidemiology and Public Health 60 College Street New Haven CT 06520 USA

The REL2 gene plays an important role in innate immunity against both Gram （＋） and Gram （-） bacteria and malaria parasites in Anopheles gambiae, the main vector of malaria in Africa. Through alternative splicing, REL2 produces two protein products, REL2F （with a Rel-homology domain as well as an inhibitory ankyrin repeat region） and REL2S （without the ankyrin repeats）. In the immune-competent cell line SualB from An. gambiae, REL2 has been shown to be a key regulator for cecropin A （or CEC1）. The high level expression of CEC1 in SualB was postulated to be the result of constitutive activation of REL2F. Here we showed that REL2F is indeed processed, albeit at a low level, in the SualB cell line. The primary cleavage requires residue 678 （an aspartic acid）. Proteolytic cleavage of REL2F can be enhanced by challenge with bacteria Escherichia coli and Bacillus subtilis, but not with fungus Beauveria bassiana. The inducible cleavage can be substantially reduced by RNA interference against PGRP-LC and CASPL1. Over-expression of REL2S or a constitutively active form of REL2F （REL2F380C or REL2F678） in An. gambiae cell line can further increase expression of CEC1 and other antimicrobial peptide genes. Over-expression of these constitutive active proteins in an immune naive cell line, MSQ43, from Anopheles stephensi, results in even more dramatic increased expression of antimicrobial peptides.

关键词： antimicrobial innate immunity malaria mosquito NF-κB

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

产业链韧性测度方法研究进展

经济学动态 2024年第4期 144-160页

作者：肖兴志王振宇李少林东北财经大学产业组织与企业组织研究中心 116025

产业链韧性测度是识别“断链”风险和维护产业链安全稳定的现实抓手,成为新时代应对、把握和引领大变局亟待解决的热点问题。本文在分析产业链韧性测度现实需求的基础上,从产业链韧性测度的理论基础、方法类型、应用步骤三个方面就经典... 详细信息

产业链韧性测度是识别“断链”风险和维护产业链安全稳定的现实抓手,成为新时代应对、把握和引领大变局亟待解决的热点问题。本文在分析产业链韧性测度现实需求的基础上,从产业链韧性测度的理论基础、方法类型、应用步骤三个方面就经典文献进行述评。首先,围绕恢复、抵抗、适应与变革四大能力追溯概念界定、内涵特征和学科交叉的理论起源;其次,系统梳理了以核心变量法、综合评价法及投入产出法为代表的产业链韧性评价方法,剖析了各自优点与相对不足;最后,全面厘清了“冲击识别—结构分析—韧性评价”框架下的韧性测度理论与方法应用。本文认为,产业链韧性测度方法的选取及应用须高度重视学科交叉的应用场景,廓清理论模型的适用条件,为测度和增强产业链韧性提供多样化、稳健性的方法支撑。

关键词：产业链韧性经济韧性测度方法

Coexistence Between Massive MIMO and Radar Communications:Performance Analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Communications and Information Networks 2023年第1期8卷 37-47页

作者： Mohamed Elfiatoure Hien Quoc ngo Michail Matthaiou Centre for Wireless Innovation(CWI) Queen’s University BelfastBelfast BT39DTUK

Frequency spectrum sharing between radar and communication systems has recently attracted substantial *** consider the coexistence between a massive multiple-input multiple-output(MIMO)downlink system and MIMO radar to enable the operation of these two systems with minimal mutual *** an asymptotic analysis,we show that by using more antennas at the base station(BS),we can improve the performance of massive MIMO,while keeping the interference to the radar system ***,if we use a large number of antennas at the BS and make the transmit power inversely proportional to the number of antennas,we can avoid the interference from the massive MIMO system to the radar system,with no compromise in the performance of the massive MIMO ***-form expressions for the probability of detection of the radar system and the downlink spectral efficiency of the massive MIMO system,are ***,we propose a power allocation scheme which selects the transmit powers at the MIMO radar and BS to maximize the probability of detection for the MIMO ***,the optimal power allocation can be determined in *** results provide valuable insights into the practical coexistence between massive MIMO and radar systems.

关键词： massive MIMO radar-communication coexistence spectrum sharing

Influences of substrate temperature on microstructure and corrosion behavior of APS Ni_(50)Ti_(25)Al_(25) inter-metallic coating

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第2期27卷 607-612页

作者： sh Khandanjou M Ghoranneviss sh Saviz M Reza Afshar Plasma Physics Research Center Science and Research Branch Islamic Azad University Department of Materials Engineering Science and Research Branch Islamic Azad University

In the present investigation, Ni_（50）Ti_（25）Al_（25）（at.%） mechanically alloyed powder is deposited on carbon steel *** the coating process, the substrate is heated to temperature ranging from room temperature to 400℃. The microstructure, porosity, microhardness, adhesion strength, and corrosion behavior of the coating are investigated at different substrate temperatures. Results show that coating porosity is lower on high temperature surface. Microhardness and adhesion strength of the deposition layer on the substrate without preheating have lower values than with preheating. The polarization test result shows that corrosion performance of the coating is dependent on micro cracks and porosities and the increasing of substrate temperature can improve the quality of coating and corrosion performance.

关键词： Ni50Ti25Al25 coating air plasma spray planetary ball milling inter-metallic compounds corrosion resistance

Solving two-dimensional Volterra-Fredholm integral equations of the second kind by using Bernstein polynomials

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2017年第1期32卷 68-78页

作者： M.sh.Dahaghin sh.Eskandari Department of Mathematics Shahrekord University Shahrekord Iran

In this paper, we present a numerical method for solving two-dimensional VolterraFredholm integral equations of the second kind（2DV-FK2）. Our method is based on approximating unknown function with Bernstein polynomials. We obtain an error bound for this method and employ the method on some numerical tests to show the efficiency of the method.

关键词： Volterra approximating approximate variational proof iterative uniformly exact wavelet inequality

Numerical modeling of thermally-induced fractures in a large rock salt mass

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2018年第5期10卷 844-855页

作者： D.T. ngo FL. Pellet MINES ParisTech PSL Research University Fontainebleau France

Numerical modeling of thermally-induced fractures is a concern for many geo-structures including deep underground energy storage caverns. In this paper, we present the numerical simulation of a large-scale cooling experiment performed in an underground rock salt mine. The theory of fracture mechanics was embedded in the extended finite element code used. The results provide reliable information on fracture location and fracture geometry. Moreover, the timing of the fracture onset, as well as the stress redis- tribution due to fracture propagation, is highlighted. The conclusions of this numerical approach can be used to improve the design of rock salt caverns in order to guarantee their integrity in terms of both their tightness and stability.

关键词： Fracture mechanics Thermal loading Extended finite element method (XFEM)simulation Rock salt

Non-uniform,axisymmetric misfit strain:in thin films bonded on plate substrates/substrate systems:the relation between non-uniform film stresses and system curvatures

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2005年第4期21卷 362-370页

作者： Yonggang Huang D. ngo A. J. Rosakis Department of Mechanical and Industrial Engineering University of Illinois Urbana at Urbana-Champain 1206 West Green Street IL 61801 USA Graduate Aeronautical Laboratory California Institute of TechnologyPasadena CA 91125 USA

Current methodologies used for the inference of thin film stress through curvature measurements are strictly restricted to stress and curvature states which are assumed to remain uniform over the entire film/substrate system. By considering a circular thin film/substrate system subject to non-uniform, but axisymmetric misfit strain distributions in the thin film, we derived relations between the film stresses and the misfit strain, and between the plate system＇s curvatures and the misfit strain. These relations feature a “local” part which involves a direct dependence of the stress or curvature components on the misfit strain at the same point, and a “non-local” part which reflects the effect of misfit strain of other points on the location of scrutiny. Most notably, we also derived relations between the polar components of the film stress and those of system curvatures which allow for the experimental inference of such stresses from full-field curvature measurements in the presence of arbitrary radial non-uniformities. These relations also feature a “non-local” dependence on curvatures making a full-field measurement a necessity. Finally, it is shown that the interfacial shear tractions between the film and the substrate are proportional to the radial gradients of the first curvature invariant and can also be inferred experimentally.

关键词： Non-uniform misfit strain Non-uniform wafer curvatures ,Stress-curvature relations Non-local effects ,Interfacial shears