检索结果-内蒙古大学图书馆

arXiv 2023年

作者： Shen, Sabrina C. Lee, Nicolas A. Lockett, William J. Acuil, Aliai D. Gazdus, Hannah B. Spitzer, Branden N. Buehler, Markus J. Massachusetts Institute of Technology 77 Massachusetts Ave. 1-165 CambridgeMA02139 United States Department of Materials Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States School of Architecture and Planning Media Lab Massachusetts Institute of Technology 75 Amherst Street CambridgeMA02139 United States Massachusetts Institute of Technology 77 Massachusetts Ave. 10-183 CambridgeMA02139 United States Department of Media Culture and Communication New York University 239 Greene Street New YorkNY10003 United States Department of Civil and Environmental Engineering Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States Department of Mechanical Engineering Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States Center for Computational Science and Engineering Schwarzman College of Computing 77 Massachusetts Ave. CambridgeMA02139 United States

Fungal mycelium, a living network of filamentous threads, thrives on lignocellulosic waste and exhibits rapid growth, hydrophobicity, and intrinsic regeneration, offering a potential means to create next-generation sustainable and functional composites. However, existing hybrid-living mycelium composites (myco-composites) are tremendously constrained by conventional mold-based manufacturing processes, which are only compatible with simple geometries and coarse biomass substrates that enable gas exchange. Here we introduce a class of structural myco-composites manufactured with a novel platform that harnesses high-resolution biocomposite additive manufacturing and robust mycelium colonization with indirect inoculation. We leverage principles of hierarchical composite design and selective nutritional provision to create a robust myco-composite that is scalable, tunable, and compatible with complex geometries. To illustrate the versatility of this platform, we characterize the impact of mycelium colonization on mechanical and surface properties of the composite, finding that it yields the strongest mycelium composite reported to date, and demonstrate fabrication of unique foldable bio-welded containers and flexible mycelium textiles. This study bridges the gap between biocomposite and hybrid-living materials research, opening the door to advanced structural mycelium applications and demonstrating a novel platform for development of diverse hybrid-living materials. © 2023, CC BY-NC-ND.

关键词： Mycelium

来源：评论

学校读者我要写书评

暂无评论

OpenClinicalAI: enabling AI to diagnose diseases in real-world clinical settings

arXiv

引用

arXiv 2021年

作者： Huang, Yunyou Wang, Nana Tang, Suqin Ma, Li Hao, Tianshu Jiang, Zihan Zhang, Fan Kang, Guoxin Miao, Xiuxia Guan, Xianglong Zhang, Ruchang Zhang, Zhifei Zhan, Jianfeng Guangxi Key Lab of Multi-Source Information Mining & Security School of Computer Science and Engineering School of Software Guangxi Normal University Guilin China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China Guilin Medical University Guilin China Department of Physiology and Pathophysiology Capital Medical University Beijing China University of Chinese Academy of Sciences China International Open Benchmark Council

This paper quantitatively reveals the state-of-the-art and state-of-the-practice AI systems only achieve acceptable performance on the stringent conditions that all categories of subjects are known, which we call closed clinical settings, but fail to work in real-world clinical settings. Compared to the diagnosis task in the closed setting, real-world clinical settings pose severe challenges, and we must treat them differently. We build a clinical AI benchmark named Clinical AIBench to set up real-world clinical settings to facilitate researches. We propose an open, dynamic machine learning framework and develop an AI system named OpenClinicalAI to diagnose diseases in real-world clinical settings. The first versions of Clinical AIBench and OpenClinicalAI target Alzheimer’s disease. In the real-world clinical setting, OpenClinicalAI significantly outperforms the state-of-the-art AI system. In addition, OpenClinicalAI develops personalized diagnosis strategies to avoid unnecessary testing and seamlessly collaborates with clinicians. It is promising to be embedded in the current medical systems to improve medical services. © 2021, CC BY.

关键词： Diagnosis

来源：评论

学校读者我要写书评

暂无评论

On node ranking in graphs

arXiv

引用

arXiv 2021年

作者： Dudkina, Ekaterina Bin, Michelangelo Breen, Jane Crisostomi, Emanuele Ferraro, Pietro Kirkland, Steve Marecek, Jakub Murray-Smith, Roderick Parisini, Thomas Stone, Lewi Yilmaz, Serife Shorten, Robert Department of Energy Systems Territory and Constructions Engineering University of Pisa Pisa Italy Department of Electrical and Electronic Engineering Imperial College London London United Kingdom Ontario Tech University Canada Dyson School of Design Engineering Imperial College London London United Kingdom Department of Mathematics University of Manitoba Canada Czech Technical University Prague Czech Republic School of Computing Science University of Glasgow Glasgow United Kingdom Department of Engineering and Architecture University of Trieste Trieste Italy KIOS Research and Innovation Center of Excellence University of Cyprus Nicosia Cyprus The George S. Wise Faculty of Life Sciences Tel Aviv University Israel Mathematics School of Science RMIT University Melbourne Australia

The ranking of nodes in a network according to their "importance" is a classic problem that has attracted the interest of different scientific communities in the last decades. The current COVID-19 pandemic has recently rejuvenated the interest in this problem, as it is related to the selection of which individuals should be tested in a population of asymptomatic individuals, or which individuals should be vaccinated first. Motivated by the COVID-19 spreading dynamics, in this paper we review the most popular methods for node ranking in undirected unweighted graphs, and compare their performance in a benchmark realistic network, that takes into account the community-based structure of society. Also, we generalize a classic benchmark network originally proposed by Newman for ranking nodes in unweighted graphs, to show how ranks change in the weighted case. Copyright © 2021, The Authors. All rights reserved.

关键词： Benchmarking

来源：评论

学校读者我要写书评

暂无评论

The Impact and Modelling of Concentrated Butt-Joints on Vertically Laminated Bamboo-Timber Hybrid Bio-Flitch Beams

Research Square

引用

Research Square 2021年

作者： Zhang, Hexin Gharavi, Niaz Wong, Simon H.F. Deng, Yu Bahadori-Jahromi, Ali Limkatanyu, Suchart Qiao, Yao Kuang, J.S. School of Engineering and the Built Environment Edinburgh Napier University 10 Colinton Road Edinburgh ScotlandEH10 5DT United Kingdom Department of Construction Technology and Engineering Technological Higher Education Institute of Hong Kong 20A Tsing Yi Road Tsing Yi Island New Territories Hong Kong School of Civil Engineering and Architecture Guangxi University of Science and Technology Liuzhou545006 China Department of Civil Engineering and Built Environment School of Computing and Engineering University of West London LondonW5 5RF United Kingdom Department of Civil Engineering Faculty of Engineering Prince of Songkla University Songkla Thailand Pacific Northwest National Laboratory RichlandWA99354 United States Department of Civil and Environmental Engineering Hong Kong University of Science and Technology Kowloon Hong Kong

This paper presents the experimental and analytical studies to investigate the impact of concentrated laminated bamboo butt-joints on the flexural properties of vertically laminated bamboo-timber hybrid beams (VLHBs, or flitch beam). The experimental results reveal that the concentrated butt-joints significantly reduce the flexural strength of the VLHB. They also suggest that the failure mechanism of the VLHBs with or without concentrated butt-joints are completely different. In addition, laminated bamboo lumber with concentrated butt-joints was found to be unsuitable for structural applications. The analytical estimations show close agreement with the experimental results. However, due to the layout of the sample VLHB, the experimental study cannot confirm the impact of the butt-joints on the modulus of elasticity in bending. © 2021, CC BY.

关键词： Bamboo

来源：评论

学校读者我要写书评

暂无评论

Analytic approximations of Von Krmn plate under arbitrary uniform pressure—equations in integral form

引用

Science China(Physics,Mechanics & Astronomy) 2018年第1期61卷 57-67页

作者： XiaoXu Zhong ShiJun Liao School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Collaborative Innovative Center for Advanced Ship and Deep-Sea Exploration State Key Laboratory of Ocean Engineering Ministry-of-Education Key Laboratory of Scientific and Engineering Computing

Analytic approximations of the Von Karman＇s plate equations in integral form for a circular plate under external uniform pressure to arbitrary magnitude are successfully obtained by means of the homotopy analysis method （HAM）, an analytic approximation technique for highly nonlinear problems. Two HAM-based approaches are proposed for either a given external uniform pressure Q or a given central deflection, respectively. Both of them are valid for uniform pressure to arbitrary magnitude by choosing proper values of the so-called convergence-control parameters c1 and c2 in the frame of the HAM. Besides, it is found that the HAM- based iteration approaches generally converge much faster than the interpolation iterative method. Furthermore, we prove that the interpolation iterative method is a special case of the first-order HAM iteration approach for a given external uniform pressure Q when c1= -0 and c2 = -1, where 0 denotes the interpolation iterative parameter. Therefore, according to the convergence theorem of Zheng and Zhou about the interpolation iterative method, the HAM-based approaches are valid for uniform pressure to arbitrary magnitude at least in the special case c1 = -0 and c2= -1. In addition, we prove that the HAM approach for the Von karman＇s plate equations in differential form is just a special case of the HAM for the Von karman＇s plate equations in integral form mentioned in this paper. All of these illustrate the validity and great potential of the HAM for highly nonlinear problems, and its superiority over perturbation techniques.

关键词： circular plate high nonlinearity homotopy analysis method

来源：评论

学校读者我要写书评

暂无评论

Investigation of the atomic and thermal performance of Al 2 O 3 nanoparticles/octadecane as phase change materials (PCM) in circular tube with molecular dynamics simulation

引用

International Communications in Heat and Mass Transfer 2025年 167卷

作者： Gongxing Yan Jialing Li Ihab Omar Soheil Salahshour Rozbeh Sabetvand Riadh Marzouki School of Architecture and Engineering Xinjiang Applied Vocational ad Technical College Yili 8333200 Xinjiang China School of Artificial intellegence Chongqing Youth Vocational & Technical College Chongqing 401320 China Air Conditioning Engineering Department Faculty of Engineering Warith Al-Anbiyaa University Karbala 56001 Iraq Faculty of Engineering and Natural Sciences Istanbul Okan University Istanbul Turkey Faculty of Engineering and Natural Sciences Bahcesehir University Istanbul Turkey Research Center of Applied Mathematics Khazar University Baku Azerbaijan Fast Computing Center Shabihsazan Ati Pars Tehran Iran Department of Chemistry College of Science King Khalid University P.O. Box 9004 61413 Abha Saudi Arabia

Phase change materials' heat transfer mechanism may be enhanced by high thermal conductivity nanoparticles, allowing for quicker and more efficient thermal energy storage and release. This study examined the atomic and thermal characteristics of octadecane as a phase transition material inside a circular tube using molecular dynamics modeling with Al 2 O 3 nanoparticles. At 0.031 (±0.002) atoms/Å 3 , the tube walls had the highest density after 20 ns. The tube's maximum recorded temperature was 751.51 (±1.01) K, and its peak velocity was 0.0078 (±0.0001) Å/fs. After 20 ns, the thermal conductivity was 1.35 (±0.01) W/m·K and the heat flux was 3.84 (±0.01) W/m 2 . The charging and discharging times of the structure were 6.45 (±0.05) and 7.15 (±0.03) ns, respectively. This study shows how AlO₃ nanoparticles can enhance the thermal performance of octadecane in energy storage applications. It also provided important information about the atomic-level behavior of these materials during phase transitions.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Post-lockdown abatement of COVID-19 by fast periodic switching

arXiv

引用

arXiv 2020年

作者： Bin, M. Cheung, P. Crisostomi, E. Ferraro, P. Lhachemi, H. Murray-Smith, R. Myant, C. Parisini, Thomas Shorten, R. Stein, S. Stone, L. Department of Electrical and Electronic Engineering Imperial College London United Kingdom Dyson School of Design Engineering Imperial College London United Kingdom School of Electrical & Electronic Engineering University College Dublin Ireland School of Computing Science University of Glasgow Department of Engineering and Architecture University of Trieste Italy Department of Electrical and Electronic Engineering University College Dublin George S. Wise Faculty of Life Sciences Tel Aviv University

COVID-19 abatement strategies have risks and uncertainties which could lead to repeating waves of infection. We show - as proof of concept grounded on rigorous mathematical evidence - that periodic, high-frequency alternation of into, and out-of, lockdown effectively mitigates second-wave effects, while allowing continued, albeit reduced, economic activity. Periodicity confers (i) predictability, which is essential for economic sustainability, and (ii) robustness, since lockdown periods are not activated by uncertain measurements over short time scales. In turn - while not eliminating the virus - this fast switching policy is sustainable over time, and it mitigates the infection until a vaccine or treatment becomes available, while alleviating the social costs associated with long lockdowns. Typically, the policy might be in the form of 1-day of work followed by 6-days of lockdown every week (or perhaps 2 days working, 5 days off) and it can be modified at a slow-rate based on measurements filtered over longer time scales. Our results highlight the potential efficacy of high frequency switching interventions in post lockdown mitigation. All code is available on Github1 A software tool has also been developed so that interested parties can explore the proof-of-concept system. Copyright © 2020, The Authors. All rights reserved.

关键词： Viruses

来源：评论

学校读者我要写书评

暂无评论

Malware Attack Predictive Analytics in a Cyber Supply Chain Context Using Machine Learning

Malware Attack Predictive Analytics in a Cyber Supply Chain ...

引用

Cyber Security and Internet of Things (ICSIoT), International Conference on

作者： Abel Yeboah-Ofori Charles Boachie School of Architecture Computing & Engineering University of East London UK Center for Biostatistics University of Aberdeen UK

ISBN: (数字)9781728174174

ISBN: (纸本)9781728174181

Due to the invincibility nature of cyber attacks on the cyber supply chain (CSC), and the cascading effects ofmalware infections, we use machine learning to predictattacks. As organizations have become more reliant on CSC systems for business continuity, so are the increase invulnerabilities and the threat landscapes. Some traditionalapproach to detecting and defending malware attack haslargely been antimalware or antivirus software such as spam filters, firewall, and IDS/IPS. These tools largelysucceed, however, as threat actors get more intelligent, theyare able to circumvent and affect nodes on systems which then propagates. In our previous work, we characterizedthreat actor activities, including presumed intent and historically observed behaviour, for the purpose of ascertaining the current threats that could be exploited. Inthis paper, we use ML techniques to learn dataset and predict which CSC nodes have detection or no detection. The purpose is to predict which modes are venerable to cyberattacks and for predicting future trends. Todemonstrate the applicability of our approach, we used adataset from Microsoft Malware Prediction website. Further, an ensemble is used to link Logistic Regression, and Decision Tree and SVM algorithms in Majority Votingand run on the training data and then use 10-fold crossvalidation to test the parameter estimation, accurate results and predictions. The results show that ML algorithms in Decision Trees methods can be used in cyber supply chainpredict analytics to detect and predict future cyber attacktrends.

关键词： Classification algorithms Prediction algorithms Machine learning Support vector machines Malware Supply chains Decision trees

来源：评论

学校读者我要写书评

暂无评论

Sparse code multiple access for 6G wireless communication networks: Recent advances and future directions

arXiv

引用

arXiv 2021年

作者： Yu, Lisu Liu, Zilong Wen, Miaowen Cai, Donghong Dang, Shuping Wang, Yuhao Xiao, Pei School of Information Engineering Nanchang University Nanchang330031 China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing100190 China School of Computer Science and Electronics Engineering University of Essex ColchesterCO4 3SQ United Kingdom School of Electronic and Information Engineering South China University of Technology Guangzhou510640 China College of Cyber Security Jinan University Guangzhou510632 China Thuwal23955-6900 Saudi Arabia Institute for Communication Systems 5G Innovation Centre University of Surrey GuildfordGU2 7XH United Kingdom

As 5G networks rolling out in many different countries nowadays, the time has come to investigate how to upgrade and expand them towards 6G, where the latter is expected to realize the interconnection of everything as well as the development of a ubiquitous intelligent mobile world for intelligent life. To enable this epic leap in communications, this article provides an overview and outlook on the application of sparse code multiple access (SCMA) for 6G wireless communication systems, which is an emerging disruptive non-orthogonal multiple access (NOMA) scheme for the enabling of massive connectivity. We propose to apply SCMA to a massively distributed access system (MDAS), whose architecture is based on fiber-based visible light communication (FVLC), ultra-dense network (UDN), and NOMA. Under this framework, we consider the interactions between optical front-hauls and wireless access links. In order to stimulate more upcoming research in this area, we outline a number of promising directions associated with SCMA for faster, more reliable, and more efficient multiple access in future 6G communication networks. © 2021, CC BY-NC-ND.

关键词： Visible light communication

来源：评论

学校读者我要写书评

暂无评论

An Enhanced Handover Scheme for Cellular-Connected UAVs

An Enhanced Handover Scheme for Cellular-Connected UAVs

引用

IEEE International Conference on Communications in China (ICCC)

作者： Wenbin Dong Xinhong Mao Ronghui Hou Xixiang Lv Hui Li School of Cyber Engineering Xidian University P. R. China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Institute of Telecommunication Satellite China Academy of Space Technology Beijing China

ISBN: (数字)9781728173276

ISBN: (纸本)9781728173283

In this paper, we propose an enhanced handover scheme for cellular-connected UAVs. Specifically, our handover scheme considers the following characteristics: 1) UAV can detect multiple cells with the comparable RSRP levels which may cause many unnecessary handovers. The handover event trigger parameters in our scheme are dynamically adjusted to avoid a UAV to handover from a cell to another cell with the comparable RSRP level; 2)In the process of taking off, the UAV would fly through the null space of antenna lobes many times, while the time duration is normally very short. The RSRP during the UAV taking off varies quickly, so that the measurement reports may not provide an accurate channel information for the UAV. In this case, when the link quality between the UAV and the BS is below a threshold, the BS allows the link being maintained for a while with the hope that the link quality would get better again. We implement our proposed handover scheme on the NS3 platform, and compare with the current LTE handover scheme and the sojourn time estimation-based handover algorithm. Our simulation results demonstrate that our proposed scheme can significantly reduce the number of unnecessary handovers. Moreover, the network throughput of our scheme is improved, since the the communication resources taken by the unnecessary handovers is utilized by the UAV for transmitting data.

关键词： Navigation Simulation Null space Handover Throughput Long Term Evolution Antennas

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：