检索结果-内蒙古大学图书馆

Correlation of Meconium-Stained Amniotic Fluid and Adverse Pregnancy Outcomes between 37 to 39 and 40 to 42 Weeks of Gestational Age

引用

American Journal of Perinatology 2023年第S 01期41卷 e1591-e1598页

作者： Anat Lavie Shira Fisch Lee Reicher Eyal Zohav Sharon Maslovitz Department of Obstetrics and Gynecology Lis Maternity Hospital Tel Aviv Sourasky Medical Center affiliated to the Sackler School of Medicine Tel Aviv University Tel Aviv Israel The Ruth and Bruce Rappaport Faculty of Medicine Technion Israel Institute of Technology Haifa Israel Department of Computer Science and Applied Mathematics Weizmann Institute of Science Rehovot Israel Department of Molecular Cell Biology Weizmann Institute of Science Rehovot Israel

来源：评论

学校读者我要写书评

暂无评论

Latency Analysis of Multiple Classes of AVB Traffic in TSN with Standard Credit Behavior using Network Calculus

arXiv

引用

arXiv 2020年

作者： Zhao, Luxi Pop, Paul Zheng, Zhong Daigmorte, Hugo Boyer, Marc Department of Applied Mathematics and Computer Science Technical University of Denmark Denmark Department of Electronics and Information Engineering Beihang University Beijing China RealTime-at-Work Toulouse France Department on Information Processing and Systems at ONERA Toulouse France

Time-Sensitive Networking (TSN) is a set of amendments that extend Ethernet to support distributed safety-critical and real-time applications in the industrial automation, aerospace and automotive areas. TSN integrates multiple traffic types and supports interactions in several combinations. In this paper we consider the configuration supporting Scheduled Traffic (ST) traffic scheduled based on Gate-Control-Lists (GCLs), Audio-Video-Bridging (AVB) traffic according to IEEE 802.1BA that has bounded latencies, and Best-Effort (BE) traffic, for which no guarantees are provided. The paper extends the timing analysis method to multiple AVB classes and proofs the credit bounds for multiple classes of AVB traffic, respectively under frozen and non-frozen behaviors of credit during guard band (GB). They are prerequisites for non-overflow credits of Credit-Based Shaper (CBS) and preventing starvation of AVB traffic. Moreover, this paper proposes an improved timing analysis method reducing the pessimism for the worst-case end-to-end delays of AVB traffic by considering the limitations from the physical link rate and the output of CBS. Finally, we evaluate the improved analysis method on both synthetic and real-world test cases, showing the significant reduction of pessimism on latency bounds compared to related work, and presenting the correctness validation compared with simulation results. We also compare the AVB latency bounds in the case of frozen and non-frozen credit during GB. Additionally, we evaluate the scalability of our method with variation of the load of ST flows and of the bandwidth reservation for AVB traffic. Copyright © 2020, The Authors. All rights reserved.

关键词： Calculations

来源：评论

学校读者我要写书评

暂无评论

Partial identifiability in discrete data with measurement error

arXiv

引用

arXiv 2020年

作者： Finkelstein, Noam Adams, Roy Saria, Suchi Shpitser, Ilya Department of Computer Science Johns Hopkins University United States Department of Applied Mathematics and Statistics Johns Hopkins University United States Department of Biostatistics Johns Hopkins University United States Bayesian Health United States

When data contains measurement errors, it is necessary to make assumptions relating the observed, erroneous data to the unobserved true phenomena of interest. These assumptions should be justifiable on substantive grounds, but are often motivated by mathematical convenience, for the sake of exactly identifying the target of inference. We adopt the view that it is preferable to present bounds under justifiable assumptions than to pursue exact identification under dubious ones. To that end, we demonstrate how a broad class of modeling assumptions involving discrete variables, including common measurement error and conditional independence assumptions, can be expressed as linear constraints on the parameters of the model. We then use linear programming techniques to produce sharp bounds for factual and counterfactual distributions under measurement error in such models. We additionally propose a procedure for obtaining outer bounds on non-linear models. Our method yields sharp bounds in a number of important settings – such as the instrumental variable scenario with measurement error – for which no bounds were previously known. Copyright © 2020, The Authors. All rights reserved.

关键词： Measurement errors

来源：评论

学校读者我要写书评

暂无评论

Towards proper consumer choices - MCDM based product selection

引用

Procedia computer science 2021年 192卷 1347-1358页

作者： Bartosz Paradowski Aleksandra Bączkiewicz Jarosław Watrąbski Research Team on Intelligent Decision Support Systems Department of Artificial Intelligence and Applied Mathematics Faculty of Computer Science and Information Technology West Pomeranian University of Technology in Szczecin ul. Żołnierska 49 71-210 Szczecin Poland Institute of Management University of Szczecin Cukrowa 8 71-004 Szczecin Poland Doctoral School of University of Szczecin Mickiewicza 16 70-383 Szczecin Poland

Everyday situations each day more often require us to solve sometimes even complex decisional problems. Such conditions may include the problem of choice when purchasing services, products or devices. The ever-increasing assortment of products and services makes it more and more time-consuming for customers to choose the most suitable product for them. Following their intuition or considering only some selection criteria may result in an unsatisfactory choice. Decision making in multi-criteria selection problems needs the consideration of many factors, which are often conflicting. For this purpose, more people reach for multi-criteria decision methods (MCDM). These methods provide an easy way of solving a given problem under certain circumstances. With the increasing popularity of those methods, more are developed each day. This paper presents an approach based on four MCDM methods applied to solve the problem of choosing the most favourable CPU model available on the market regarding price and performance, among other criteria. For this purpose, COMET, TOPSIS, VIKOR and PROMETHEE II methods were performed. Later, a comparative analysis of the rankings obtained using the applied methods was conducted. Rankings provided by used methods were compared using correlation coefficients. The research showed that choosing a specific method is relevant for the results and that real-life problems can be successfully solved using multi-criteria decision methods. The obtained results confirm the suitability of MCDM methods as a decision support tool for consumers’ product selection. Applications based on MCDM allowing customers to perform multi-criteria analysis of a set of products could contribute to increased consumer satisfaction and growth of popularity and competitiveness of online stores providing them.

关键词： Multi-criteria CPU selection problem Customer choices MCDM COMET TOPSIS VIKOR PROMETHEE II

来源：评论

学校读者我要写书评

暂无评论

COMBINING THE HYBRID MIMETIC MIXED METHOD WITH THE SCHARFETTER-GUMMEL SCHEME FOR MAGNETISED TRANSPORT IN PLASMAS

arXiv

引用

arXiv 2021年

作者： Cheng, Hanz Martin Thije Boonkkamp, Jan Ten Janssen, Jesper Mihailova, Diana van Dijk, Jan School of Engineering Science Lappeenranta-Lahti University of Technology P.O. Box 20 Lappeenranta53851 Finland Department of Mathematics and Computer Science Eindhoven University of Technology P.O. Box 513 Eindhoven5600 MB Netherlands Plasma Matters B.V. Eindhoven Netherlands Department of Applied Physics Eindhoven University of Technology P.O. Box 513 Eindhoven5600 MB Netherlands

In this paper, we propose a numerical scheme for fluid models of magnetised plasmas. One important feature of the numerical scheme is that it should be able to handle the anisotropy induced by the magnetic field. In order to do so, we propose the use of the hybrid mimetic mixed (HMM) scheme for diffusion. This is combined with a hybridised variant of the Scharfetter-Gummel (SG) scheme for advection. The proposed hybrid scheme can be implemented very efficiently via static condensation. Numerical tests are then performed to show the applicability of the combined HMM-SG scheme, even for highly anisotropic magnetic fields. © 2021, CC BY.

关键词： Anisotropy

来源：评论

学校读者我要写书评

暂无评论

Towards Sustainable Energy Consumption Evaluation in Europe for Industrial Sector Based on MCDA Methods

引用

Procedia computer science 2021年 192卷 1334-1346页

作者： Aleksandra Bączkiewicz Bartłomiej Kizielewicz Institute of Management University of Szczecin Cukrowa 8 71-004 Szczecin Poland Doctoral School of University of Szczecin Mickiewicza 16 70-383 Szczecin Poland Research Team on Intelligent Decision Support Systems Department of Artificial Intelligence and Applied Mathematics Faculty of Computer Science and Information Technology West Pomeranian University of Technology in Szczecin ul. Z˙ołnierska 49 71-210 Szczecin Poland

This paper presents a new approach to evaluate sustainable energy consumption in selected European countries for the industrial sector and to identify which country is leading in this respect. Energy consumption has been on a continuously rising trend due to industrial development, migration of people from rural to urban areas and growing energy demand in the service sector. Therefore, it is essential to increase the share of renewable sources in energy consumption because it allows reducing the share of non-renewable sources, which significantly contribute to carbon dioxide emissions to the atmosphere. The assessment of the effectiveness of actions taken to improve the sustainability of energy consumption requires the consideration of many different criteria. The practical usefulness of multi-criteria decision analysis (MCDA) methods in this task has been proven in the literature. The structure of the model evaluated was based on criteria made available by the European Statistical Office (EUROSTAT). The study was conducted using four MCDA methods (TOPSIS, VIKOR, COMET and PROMETHEE II). The results obtained proved the usefulness and adequacy of the selected MCDA methods in assessing the problem in question. It was possible to clearly identify the country with the most sustainable energy consumption in terms of the established principles.

关键词： Multi-criteria problems Sustainability in energy problems MCDA TOPSIS VIKOR COMET PROMETHEE II

来源：评论

学校读者我要写书评

暂无评论

Interaction of plane solitons in the 2D Gardner equation

引用

Physica D: Nonlinear Phenomena 2025年 480卷

作者： R. Fariello Y.A. Stepanyants T.G. Talipova Department of Computer Science State University of Montes Claros Montes Claros MG Brazil School of Mathematics Physics and Computing University of Southern Queensland 487–535 West St. Toowoomba QLD 4350 Australia Institute of Applied Physics of the Russian Academy of Sciences 46 Ulyanov Street Box-120 Nizhny Novgorod 603950 Russia

The asymptotic approach is suggested for the description of stationary patterns formed by two plane solitons interacting at an angle to each other within the 2D Gardner equation that describes internal waves in oceans. The approach is applicable both to integrable and nonintegrable evolution equations possessing soliton solutions. An approximate set of equations describing soliton fronts in the x,y -plane is derived for symmetric soliton patterns and solved analytically for small-amplitude solitons and numerically for large-amplitude solitons. Spatial shifts of soliton fronts caused by the nonlinear interaction of solitons are obtained.

关键词： Two-layer fluid Surface and internal waves Solitons Kadomtsev–Petviashvili equation Gardner equation Two-soliton solutions

来源：评论

学校读者我要写书评

暂无评论

Trouble at the CSIDH: Protecting CSIDH with Dummy-Operations Against Fault Injection Attacks

Trouble at the CSIDH: Protecting CSIDH with Dummy-Operations...

引用

Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC)

作者： Fabio Campos Matthias J. Kannwischer Michael Meyer Hiroshi Onuki Marc Stöttinger Department of Computer Science University of Applied Sciences Wiesbaden Germany Radboud University Nijmegen The Netherlands Department of Mathematics University of Würzburg Germany Department of Mathematical Informatics University of Tokyo Japan Continental AG Frankfurt Germany

ISBN: (数字)9781728195629

ISBN: (纸本)9781728195636

The isogeny-based scheme CSIDH is a promising candidate for quantum-resistant static-static key exchanges with very small public keys, but is inherently difficult to implement in constant time. In the current literature, there are two directions for constant-time implementations: algorithms containing dummy computations and dummy-free algorithms. While the dummy-free implementations come with a 2x slowdown, they offer by design more resistance against fault attacks. In this work, we evaluate how practical fault injection attacks are on the constant-time implementations containing dummy calculations. We present three different fault attacker models. We evaluate our fault models both in simulations and in practical attacks. We then present novel countermeasures to protect the dummy isogeny computations against fault injections. The implemented countermeasures result in an overhead of 7% on the Cortex-M4 target, falling well short of the 2x slowdown for dummy-less variants.

关键词： Kernel Computational modeling Resistance Public key Protocols Optimization Erbium

来源：评论

学校读者我要写书评

暂无评论

Towards objective multi-criteria drone evaluation based on VIKOR and COMET methods

引用

Procedia computer science 2021年 192卷 4522-4531页

作者： Volodymyr Kozlov Tomasz Norek Research Team on Intelligent Decision Support Systems Department of Artificial Intelligence and Applied Mathematics Faculty of Computer Science and Information Technology West Pomeranian University of Technology in Szczecin ul.Żołnierska 49 71-210 Szczecin Poland Institute of Spatial Management and Socio-Economic Geography University of Szczecin al. Papieża Jana Pawła II 22a 70-453 Szczecin Poland

With the recent rising number of personal drones, the market is growing with more and more new drones. The actual number of alternatives is unsuspectedly huge. Nevertheless, each year their characteristics are only improving, which only complicate the selection. The manual optimal choice is a significant challenge, likely even impossible. Still, the most efficient way to estimate the ranking of the alternatives is a multi-criteria decision analysis (MCDA). In this paper, we use MCDA methods towards objective multi-criteria drone evaluation. Our work is based on VIKOR and COMET method which have presented their efficiency in many works with multi-criteria problems. For optimal selection on twelve alternatives of drones, nine criteria were used and two MCDA methods with the same weights. Finally, the result is presented and discussed in the end.

关键词： VIKOR COMET MCDA drone evaluation

来源：评论

学校读者我要写书评

暂无评论

Modeling of Biological Wastewater Treatment Process Taking into Account Reverse Effect of Concentration on Diffusion Coefficient

Modeling of Biological Wastewater Treatment Process Taking i...

引用

International Conference on Advanced computer Information Technologies (ACIT)

作者： Andrii Safonyk Viktor Zhukovskyy Anna Burduk Department of Automation National University of Water and Environmental Engineering Rivne Ukraine Department of Computer Science and Applied Mathematics National University of Water and Environmental Engineering Rivne Ukraine Department Mechanical Wroclaw University of Technology Wroclaw Poland

ISBN: (数字)9781728167602

ISBN: (纸本)9781728167619

A mathematical model of biological wastewater treatment has been developed. Mathematical model describes the processes occurring at the treatment plant, taking into account the mutual effects of a range of process characteristics. The influence of external factors for temperature calculation based on thermal balance equation and thermodynamics laws is taken into account. The solution of the corresponding problem was found using the Matlab software environment and pdepe function for solving initial-boundary value problems for systems of parabolic and elliptic partial differential equations in one space variable and time. The results of pollution concentration distribution and temperature distribution over the time of liquid purification are presented. The influence of the aqueous medium temperature and the oxygen concentration on the activated sludge absorption capacity is investigated. The dependence of bacteria activity on the water temperature is shown, which makes it possible to predict and automate technological processes of biological wastewater treatment in a more detailed and comprehensive way.

关键词： Water heating Mathematical model Heat transfer Microorganisms Absorption

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：