检索结果-内蒙古大学图书馆

EAI-TupletScore, a pharmacophore and shape driven ligand-based de-novo design algorithm

BMC Chemistry 2009年第1期3卷 1-1页

作者： KM Smith BB Masek RD Clark T Mansley E Abrahamian S Nagy Tripos Intl. Inc. 1699 S. Hanley Rd St Louis Missouri 63144 USA

来源：评论

学校读者我要写书评

暂无评论

design of algorithm Control For Monitoring System And Control Bridge Based Internet of Things (IoT)

Design of Algorithm Control For Monitoring System And Contro...

引用

Smart Technology and Applications (ICoSTA), 2020 International Conference on

作者： Farida Iasha Purwadi Agus Darwito Department of Engineering Physics Sepuluh Nopember Institute of Technology Surabaya Indonesia Department of Instrument Engineering Sepuluh Nopember Institute of Technology Surabaya Indonesia

ISBN: (数字)9781728130835

ISBN: (纸本)9781728130842

Currently, the government is trying to improve road infrastructure in the form of tolls and bridges. In its construction design, the general bridge age is planned to have a life span of 100 years for large bridges and 50 years as the lifespan limit [1]. Over time the bridge will experience changes caused by movement from nature, bridge loads, bridge construction structures, excessive vibration, and so on [1]. One of the causes of a bridge collapse is a load that exceeds the capacity [2]. For example, the case of the ring bridge in Tuban district collapsed, because the vehicle load exceeded the bridge's capacity. Regarding the case of a bridge collapse in Tuban, it inspired the idea to collect, consider and maintain every bridge in Indonesia. If there is a bridge that fixes the collapse, repair activities can be carried out in Indonesia. In this research, a design algorithm was made, in which the compilation of devices mounted by the bridge so as not to exceed the maximum bridge load capacity. Vehicles entering the bridge have been indexed by several variables within 24 hours. Some of these variables are time, vehicle identity consisting of the license plate number, type of vehicle, vehicle weight and index. design a bridge monitoring system and Internet-based (IoT) bridge monitoring algorithm. The truth of the algorithm, a simulation program was created using a visual studio, a database using MySQL and a website over base application. But in designing this algorithm, analysis is needed in determining the number of accelerometer sensors. The purpose of this algorithm system is bridge capability so that the weight of the incoming vehicle is not much or exceeds the bridge's capability limit. The validation of the design of this algorithm is to compare the workings of the standard algorithm. The results of this study are the creation of an algorithm for the Internet of Things (IoT) based monitoring and control systems that can provide information about bridges in real-t

关键词： Control Monitoring system Bridge Internet of Things bridges Bridge (game) monitoring systems Internet of things Bridge failure Bridge management algorithms Standing Orders design algorithm Life span

来源：评论

学校读者我要写书评

暂无评论

Tilting-pad journal bearing design considering rotordynamic stability and bearing performance

引用

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY 2025年第1期39卷 1-12页

作者： Lee, Jeongin Lee, Junguk Suh, Junho Kim, Jong-Hyoung Pusan Natl Univ Mech Syst Design Busan 46241 South Korea Pusan Natl Univ Sch Mech Engn Busan 46241 South Korea Korea Inst Ind Technol KITECH High Tech Bearing Technol Ctr Yeongju 36144 South Korea

This paper introduces a process for designing a bearing that satisfies both rotordynamic stability and bearing performance using dimensionless bearing data. The dimensionless data of the tilting-pad journal bearing, calculated using a numerical model, is dimensioned considering thermal effects through a heat balance model. The dimensionless data is generated by considering variables such as the number of pads, preload, length-diameter ratio and load direction. Using the dimensioned static characteristics, the minimum film thickness and maximum operating temperature of the bearing are calculated. The dynamic characteristics of the bearing are applied to a rotordynamic model, and stability is compared using indicators such as separation margin, maximum vibration amplitude and amplification factor in rotor-dynamic stability analysis. To consider various design parameters, a bearing for an actual shaft system model was designed using the multi-grid method, and the influence of design variables was investigated.

关键词： Tilting-pad journal bearing (TPJB) design algorithm Rotordynamic stability Bearing performance Multi-grid

来源：评论

学校读者我要写书评

暂无评论

design algorithmS FOR MULTIHOP PACKET RADIO NETWORKS WITH MULTIPLE DIRECTIONAL ANTENNAS STATIONS

引用

IEEE TRANSACTIONS ON COMMUNICATIONS 1992年第11期40卷 1716-1724页

作者： YUM, TS HUNG, KW HONG KONG POLYTECH DEPT COMP STUDIESHONG KONGHONG KONG

A new protocol called the simple tone sense (STS) protocol is designed for multihop packet radio networks (PRN's) with multiple directional antennas stations. The protocol can minimize transmission interference by using a group of tones to identify the active neighbors. A variation of the STS protocol called the variable power tone sense (VPTS) protocol is also designed to further reduce interference. algorithms for assigning tones and for determining the orientation and broadcasting angles of the directional antennas are designed. design examples are given. Simulation result shows that the STS protocol gives better throughput-delay performance than the BTMA protocol, especially when the traffic is heavy. The VPTS protocol gives still better throughput-delay performance than the STS protocol.

关键词： Spread spectrum communication Simulation results Packet radio networks design algorithm transmission interference STATIONS Directive antennas

来源：评论

学校读者我要写书评

暂无评论

Selection diagram of design algorithms for neutron-focusing supermirrors

引用

Nuclear Science and Techniques 2022年第8期33卷 106-117页

作者： Wen-Bo Mo Hua-Rui Wu Xue-Wu Wang Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle Radiation Imaging(Tsinghua University) Ministry of EducationBeijing 100084China

The neutron supermirror is an important neutron optical device that can significantly improve the efficiency of neutron transport in neutron guides and has been widely used in research neutron *** types of algorithms,including approximately ten algorithms,have been developed for designing high-efficiency supermirror *** addition to its applications in neutron guides,in recent years,the use of neutron supermirrors in neutronfocusing mirrors has been proposed to advance the development of neutron scattering and neutron imaging instruments,especially those at compact neutron *** this new application scenario,the performance of supermirrors strongly affects the instrument performance;therefore,a careful evaluation of the design algorithms is *** this study,we examine two issues:the effect of nonuniform film thickness distribution on a curved substrate and the effect of the specific neutron intensity distribution on the performance of neutron supermirrors designed using existing *** effect of film thickness nonuniformity is found to be relatively insignificant,whereas the effect of the neutron intensity distribution over Q(where Q is the magnitude of the scattering vector of incident neutrons)is *** diagrams that show the best design algorithm under different conditions are obtained from these *** the intensity distribution is not considered,empirical algorithms can obtain the highest average reflectivity,whereas discrete algorithms perform best when the intensity distribution is taken into *** reasons for the differences in performance between algorithms are also *** findings provide a reference for selecting design algorithms for supermirrors for use in neutron optical devices with unique geometries and can be very helpful for improving the performance of focusing supermirror-based instruments.

关键词： Neutron-focusing supermirror design algorithm Thickness nonuniformity Intensity distribution over Q Selection diagram

来源：评论

学校读者我要写书评

暂无评论

Hierarchical approach for H_∞ robust control design:: S/KS mixed sensitivity with genetic algorithm

引用

IET CONTROL THEORY AND APPLICATIONS 2007年第1期1卷 18-24页

作者： Miranda, M. F. Takahashi, R. H. C. Jota, F. G. Univ Fed Minas Gerais Colegio Tecn BR-30123970 Belo Horizonte MG Brazil Univ Fed Minas Gerais Dept Matemat BR-30123970 Belo Horizonte MG Brazil Univ Fed Minas Gerais Dept Engn Eletron BR-30123970 Belo Horizonte MG Brazil

The issue of introducing generic design constraints (practical or 'real-life' constraints) in robust control design procedures is discussed. A strategy, based on a hierarchy of optimisation methods, is proposed here. An H-infinity design algorithm constitutes the bottom level of this hierarchy, and a general-purpose optimisation algorithm (a genetic algorithm) is employed for tuning the parameters of the H-infinity controller, searching for the solutions that satisfy the earlier mentioned 'practical constraints'. Practical results obtained in a pilot-scale plant with fluid-level and flow-rate control as controlled variables are included to show the applicability of the proposed method.

关键词： PILOT SCALE design algorithm design process Optimization methods Hierarchical Social Hierarchy Robust control Optimization algorithms design constraints Genetic algorithm (GA)

来源：评论

学校读者我要写书评

暂无评论

Optimization considerations in the design of shell and tube condensers implementing enhanced tubes: Experimental and theoretical analysis

引用

APPLIED THERMAL ENGINEERING 2025年 273卷

作者： Irannezhad, Nima Rossetto, Luisa Diani, Andrea Univ Padua Dept Ind Engn Via Venezia 1 I-35131 Padua Italy

Passive heat transfer enhancement technique, which includes modification of surfaces by various shapes and structures, has been a topic of research during the last decade. The helical microfin tubes, which are deemed promising in improvements of heat transfer, are often implemented in the context of flow condensation. While research regarding their impact on the two-phase flow of refrigerants is accruing, a systematic assessment is required to ensure their promised claims to increase the efficacy of thermal systems. To further expand the database within the literature, two performance criteria, Performance Index (PI) and Penalty Factor (PF), are evaluated for a database comprised of 1192 data during flow condensation of low global warming potential HydroFluoroOlefins (HFOs) inside microfin tubes ranging from 3 to 7 mm outer diameter (OD). The tube of 5 mm OD demonstrated the highest efficacy by the method of PI, while also demonstrating undesirable high PF values. In microfin tubes, despite enhanced heat transfer due to augmentation of turbulence and shear-stress forces, higher frictional pressure drops could nullify the positive effects depending on the circumstances. In a shell and tube condenser with condensation on the tube side, for fixed input and output temperatures on the coolant-side, the pressure drops could cause a noticeable drop in logarithmic mean temperature difference (LMTD). Therefore, an optimal design mass flux must exist to maximize heat transfer coefficients while avoiding adverse effects on LMTD. In some cases, due to lower frictional pressure losses for a smooth tube, it is better to avoid using a microfin structure all together. The article proposes a design procedure to correctly identify and assess the performance by conducting a preliminary simulation of a condenser.

关键词： Microfin tubes Condensation Shell and tube design algorithm Heat transfer coefficient

来源：评论

学校读者我要写书评

暂无评论

A Simple algorithm for the design of Fully Thermally Coupled Distillation Columns (FTCDC)

引用

CHEMICAL ENGINEERING COMMUNICATIONS 2012年第5期199卷 608-627页

作者： Wang, Peng Chen, Haisheng Wang, Yufeng Zhang, Liang Huang, Kejin Wang, San-Jang Beijing Univ Chem Technol Coll Informat Sci & Technol Beijing 100029 Peoples R China Ta Hwa Inst Technol Dept Chem & Mat Engn Hsinchu Taiwan

Although material and thermal coupling between the prefractionator and main distillation column renders the fully thermally coupled distillation column (FTCDC) a frequently favorable design option, it also complicates considerably process synthesis and design. In this contribution, a simple algorithm for the synthesis and design of the FTCDC is derived with the optimization of an economical objective function. In terms of an initial process design chosen arbitrarily to meet the given product specification, the algorithm allows the treatment of the continuous operating variables (e.g., the vapor and liquid split ratios) and discontinuous structural variables (e.g., the number of stages in each column section) in a unified manner and permits searches of their optimum values sequentially in each iteration step. The proposed algorithm is characterized by great simplicity in principle and high robustness to the guess of initial process design and the thermodynamic properties of the mixtures separated. Five example problems dealing with the separation of various ternary mixtures with ideal and nonideal thermodynamic properties are employed to evaluate the proposed procedure, and the obtained results demonstrate its applicability and robustness to the synthesis and design of the FTCDC.

关键词： design algorithm Distillation FTCDC Process design Process synthesis Thermal coupling

来源：评论

学校读者我要写书评

暂无评论

Discussion on:: "Linearization algorithm for a reduced order H_∞ control design of an active suspension system"

引用

EUROPEAN JOURNAL OF CONTROL 2006年第2期12卷 220-223页

作者： Prochazka, Hynek Campos-Delgado, D. U. Palacios, E. Catholic Univ Louvain CESAME 4 Ave Georges Lemaitre B-1348 Louvain Belgium Univ Autonoma San Luis Potosi Fac Ciencias San Luis Potosi 78290 Mexico

The paper by Han et al. presents an algorithm for strictly-proper fixed-ordercontroller design under an LMI formulation with an H_∞ performance condition. The proposedalgorithm is applied to the active suspension benchmark system in the Laboratoire d'Automatique deGrenoble (LAG). The contribution of this paper can be devised in two perspectives: (1) A designalgorithm for optimal H_∞ fixed-order controllers using LMIs. (2) New methodology applied to theactive suspension system.

关键词： Active Suspension Systems design algorithm design control Suspension System algorithms Linearization controller design Reduced order

来源：评论

学校读者我要写书评

暂无评论

Removing non-optimal support points in D-optimum design algorithms

引用

STATISTICS & PROBABILITY LETTERS 2003年第3期63卷 223-228页

作者： Pronzato, L Univ Nice CNRS UMR 6070 Lab I3S F-06903 Sophia Antipolis France

We show that points can be removed from the design space during the search for a D-optimum design, using a simple inequality satisfied by support points of a D-optimum design measure. This inequality does not seem to have been noticed before but may be used for accelerating algorithms for D-optimum design, or for the determination of minimum covering ellipsoids, as used, e.g., in ellipsoidal trimming. (C) 2003 Elsevier Science B.V. All rights reserved.

关键词： D-optimum design design algorithm support-point

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：