检索结果-内蒙古大学图书馆

A web-based, hospital-wide health care-associated bloodstream infection surveillance and classification system: Development and evaluation

引用

JMIR Medical informatics 2015年第3期3卷 e31页

作者： Tseng, Yi-Ju Wu, Jung-Hsuan Lin, Hui-Chi Chen, Ming-Yuan Ping, Xiao-Ou Sun, Chun-Chuan Shang, Rung-Ji Sheng, Wang-Huei Chen, Yee-Chun Lai, Feipei Chang, Shan-Chwen Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taipei Taiwan Computational Health Informatics Program Boston Children's Hospital Boston MA United States Department of Electrical Engineering National Taiwan University Taipei Taiwan Center for Infection Control National Taiwan University Hospital Taipei Taiwan National Taiwan University Hospital Information Systems Office Taipei Taiwan Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Department of Internal Medicine National Taiwan University Hospital and College of Medicine Taipei Taiwan National Health Research Institutes National Institute of Infectious Diseases and Vaccinology Miaoli Taiwan

Background: Surveillance of health care-associated infections is an essential component of infection prevention programs, but conventional systems are labor intensive and performance dependent. Objective: To develop an automatic surveillance and classification system for health care-associated bloodstream infection (HABSI), and to evaluate its performance by comparing it with a conventional infection control personnel (ICP)-based surveillance system. Methods: We developed a Web-based system that was integrated into the medical information system of a 2200-bed teaching hospital in Taiwan. The system automatically detects and classifies HABSIs. Results: In this study, the number of computer-detected HABSIs correlated closely with the number of HABSIs detected by ICP by department (n=20;r=.999 P<.001) and by time (n=14;r=.941;P<.001). Compared with reference standards, this system performed excellently with regard to sensitivity (98.16%), specificity (99.96%), positive predictive value (95.81%), and negative predictive value (99.98%). The system enabled decreasing the delay in confirmation of HABSI cases, on average, by 29 days. Conclusions: This system provides reliable and objective HABSI data for quality indicators, improving the delay caused by a conventional surveillance system. © 2020 JMIR Publications Inc. All rights reserved.

关键词： Health care-associated infection Infection control Information systems Surveillance Web-based services

来源：评论

学校读者我要写书评

暂无评论

Comparison of Sigma-Point Filters for State Estimation of Diabetes Models

Comparison of Sigma-Point Filters for State Estimation of Di...

引用

IEEE International Conference on Systems, Man, and Cybernetics

作者： Peter Szalay Adrienn Molnar Mark Muller Gyorgy Eigner Imre Rudas Zoltan Benyo Levente Kovacs Department of Control Engineering and Information Technology Budapest University of Technology and Economics Institute of Information Systems John von Neumann Faculty of Informatics Obuda University

ISBN: (纸本)9781479938414

In physiological control there is a need to estimate signals that cannot be measured directly. Burdened by measurement noise and unknown disturbances this proves to be challenging, since the models are usually highly nonlinear. Sigma-point filters could represent an adequate choice to overcome this problem. The paper investigates the applicability of several different versions of sigma-point filters for the Artificial Pancreas problem on the widely used Cambridge (Hovorka)-model.

关键词： Conferences Cybernetics

来源：评论

学校读者我要写书评

暂无评论

Hybrid output controller for parametrically uncertain systems with matching harmonic disturbances rejection

Hybrid output controller for parametrically uncertain system...

引用

Mediterranean Conference on control and Automation (MED)

作者： Alexey Bobtsov Sergey Kolyubin Anton Pyrkin Vladislav Gromov Department of Control Systems and Informatics ITMO University St. Petersburg RUSSIA Control of Complex Systems Lab. Institute for Problems of Mechanical Engineering RAS St. Petersburg RUSSIA Department of Engineering Cybernetics Norwegian University of Science and Technology Trondheim NO NORWAY

We cope with the task of output feedback stabilization of a parametrically uncertain linear plants of arbitrary relative degree under the matching harmonic disturbances of unknown frequency ω. Advancing the previously obtained results for the hybrid “consecutive compensator” controller, we present two different event-based switching algorithms incorporating only current measurements of the system output. These algorithms are needed for iterative substitution of the disturbance frequency estimations ω(t) to the feedback. It was shown that the proposed controller guarantees system invariance with respect to the external disturbance for ω(t) = ω. Simulation results bring out provided advantages of the proposed approach.

关键词： Switches Frequency estimation Output feedback Algorithm design and analysis Frequency control Harmonic analysis Adaptive control

来源：评论

学校读者我要写书评

暂无评论

Fuzzy adaptive control for pneumatic muscle actuator with simulated annealing tuning

Fuzzy adaptive control for pneumatic muscle actuator with si...

引用

International Symposium on Applied Machine Intelligence and informatics (SAMI)

作者： A. Hošovský P. Michal M. Tóthová O. Biroš Department of Mathematics Informatics and Cybernetics Faculty of Manufacturing Technologies Prešov Slovakia Department of Automation Control and Human Machine Interaction Faculty of Mechanical Engineering Košice Slovakia

Pneumatic artificial muscles - based robotic systems usually necessitate the use various nonlinear control techniques in order to improve their performance. Moreover, their robustness to parameter variation, which is generally hardly predictable, should also be tested. Here a fast hybrid adaptive control is proposed, where a conventional PD controller is placed into the feedforward branch and a fuzzy controller is placed into the adaptation branch. The fuzzy controller compensates for the actions of PD controller under conditions of inertia moment variation. The design of fuzzy controller is based on the results of optimization using simulated annealing algorithm. The results confirm fast action of the control scheme as well as its robustness to changes in inertia moment variation.

关键词： Muscles Actuators Adaptation models PD control Adaptive control Simulated annealing

来源：评论

学校读者我要写书评

暂无评论

Pareto genetic path planning hybridized with multi-objective Dijkstra's algorithm

Pareto genetic path planning hybridized with multi-objective...

引用

International Conference on System Theory, control, and Computing (ICSTCC)

作者： Lavinia Ferariu Corina Cîmpanu Department of Automatic Control and Applied Informatics “Gheorghe Asachi” Technical University of Iasi Iasi Romania Department of Computer Engineering “Gheorghe Asachi” Technical University of Iasi Iasi Romania

This paper presents an evolutionary approach to multi-objective path planning. The paths are defined on continuous scenes with disjoint and/or non-convex obstacles, for robots moving towards their destinations along linearly piecewise trajectories with any number of vertices. The fastest feasible route is genetically selected via a simultaneous minimization of path length and path steering angle. In order to assure an effective partial sorting of the potential solutions, the genetic algorithm makes use of a self-adaptive Pareto ranking scheme, based on individuals' grouping and dominance analysis. Before ranking, all the unfeasible solutions are corrected, by replacing the sub-paths which intersect the obstacles. The feasible segments are chosen from graphs generated with Delaunay triangulation, by applying a new multi-objective ranking-based fastest path procedure derived from the classical Dijsktra's algorithm. This new procedure is compatible with any nonlinear objective functions and allows using the same ranking scheme during the evolutionary search and correction of paths, thus making possible to guarantee the feasibility of the paths without any significant intrusion in the evolutionary exploration. The proposed algorithm can also be used for solving any graph - based path planning problem, involving any number of objectives. The experiments show the usefulness of the suggested techniques on working scenes with different layouts of obstacles.

关键词： Genetic algorithms Trajectory Sociology Statistics Algorithm design and analysis Optimization

来源：评论

学校读者我要写书评

暂无评论

Real-Time EMG Signal Frequency Identification

引用

IFAC Proceedings Volumes 2014年第3期47卷 2951-2956页

作者： Konstantin A. Zimenko Alexey A. Margun Alexey A. Bobtsov Dmitry N. Bazylev Artem S. Kremlev Department of Control Systems and Informatics ITMO University Kronverkski av. 49 197101 Saint-Petersburg Russia Laboratory ”Control of Complex Systems” Institute for Problems of Mechanical Engineering Bolshoy pr. V.O. 61 St.Petersburg 199178 Russia

The paper deals with a method for real-time frequency analysis of the electromyogram. The method has been proposed for usage in control systems of advanced robotics for different applications. The method includes robust real-time frequency estimation with preliminary usage of bandwidth filters. The method is easy to program and requires no additional resources. The paper presents an example of experimental approbation of proposed method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Combining analytic and experimental information for linear parameter-varying model identification: Application to a flexible robotic manipulator

Periodica polytechnica Electrical engineering and computer s...

引用

Periodica polytechnica Electrical engineering and computer science 2014年第4期58卷 133-148页

作者： Vízer, Dániel Mercère, Guillaume Prot, Olivier Laroche, Edouard Department of Control Engineering and Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics Magyar Tudósok krt. 1-3. BudapestH-1117 Hungary Laboratoire d'Informatique et d'Automatique Pour Les Systèmes University of Poitiers rue P. Brousse bâtiment B25 TSA 41105 Poitiers Cedex 986073 France Institut de Recherche XLIM University of Limoges 123 avenue A. Thomas Limoges Cedex87060 France University of Strasbourg Laboratoire des Sciences de l'Ingénieur De l'Informatique et de l'Imagerie 300 bd Sébastien Brant CS 10413 Illkirch Cedex10413 France

Identifying a linear parameter-varying (LPV) model of a nonlinear system from local experimental data is still a problem which deserves attention. Many difficulties related to the determination of the local models with respect to coherent bases have been recently pointed out and must be solved in order to ensure a good behavior of the interpolated LPV model. Rather than building a model either from the law of physics or from experimental data independently, the combination of an analytic and an experimental approach is used in this paper to identify an LPV model of a flexible robotic manipulator. This technique focuses on the interpolation step by combining local re-structured linear time-invariant (LTI) state-space models satisfying a state-space parameterization deduced from the non-linear equations governing the dynamic behavior of the system. A dedicated H∞-norm technique is introduced to solve the underlying re-structuring problem. This contribution shows that prior information can be really helpful when the problem of coherent basis selection arises. As a sample, the case of the identification of a 2-DoF non-linear flexible manipulator is addressed.

关键词： Flexible manipulators

来源：评论

学校读者我要写书评

暂无评论

Output control of Nonlinear Systems with Unmodelled Dynamics 1

引用

IFAC Proceedings Volumes 2014年第3期47卷 1302-1307页

作者： Alexey A. Bobtsov Sergey A. Kolyubin Anton A. Pyrkin Aleksandr A. Kapitonov Nikolay A. Nikolaev Department of Control Systems and Informatics ITMO University Kronverkskiy pr. 49 St. Petersburg 197101 RUSSIA Control of Complex Systems Lab. Institute for Problems of Mechanical Engineering RAS Bolshoy pr. V.O. 61 St.Petersburg 199178 RUSSIA Department of Engineering Cybernetics Norwegian University of Science and Technology NO-7491 Trondheim NORWAY

In this paper we consider the problem of output control of nonlinear systems in the presence of structural disturbances caused by so called unmodelled dynamics. This paper develops results published in Bobtsov (2002). In Bobtsov (2002) conditions of efficiency of consecutive compensator were found for the case of output stabilization of linear parametrically uncertain plant under conditions of unmodelled asymptotically stable dynamics. We added disturbances as smooth nonlinear function meeting the conditions of sector restriction to the model and synthesized regulator for this case.

关键词： singular perturbations nonlinear systems feedback control stability control laws

来源：评论

学校读者我要写书评

暂无评论

Three-dimensional passive micromixer fabricated by two-photon polymerization for microfluidic mixing

Three-dimensional passive micromixer fabricated by two-photo...

引用

作者： Liu, Yi-Jui Chen, Po-Yu Yang, Jiun-Yi Tsou, Chingfu Lee, Yi-Hsiung Baldeck, Patrice Lin, Chih-Lang Institute of Biomedical Engineering and Materials Science Central Taiwan University of Science and Technology Taichung 406 Taiwan Department of Automatic Control Engineering Feng Chia University Taichung 407 Taiwan Program of Biomedical Informatics and Biomedical Engineering Feng Chia University Taichung 407 Taiwan Program of Electrical and Communications Engineering Feng Chia University Taichung 407 Taiwan University Grenoble 1 CNRS LIPhy UMR 5588 Grenoble F-38041 France

Flow mixing is an important process for many microfluidic applications. Efficient mixing is difficult in microscale channels owing to laminar flow. Disturbing the flow stream by modifying channel geometries or embedding barriers improves the mixing rate. In this study, a three-dimensional (3-D) passive micromixer with propeller blades fabricated by two-photon polymerization (TPP) technology is embedded in the channel for fluid mixing. The propeller blades are designed to disturb the laminar flow in three dimensions to improve the mixing rate. Screw-shaped and flat blades are compared. The experimental results indicate that the screw-shaped propeller provides additional streamlines in the Z direction, which enhances the mixing efficiency. Finally, this phenomenon was verified through simulation.

关键词： Laminar flow

来源：评论

学校读者我要写书评

暂无评论

Parametric model order reduction by sparse-grid-based interpolation on matrix manifolds for multidimensional parameter spaces

Parametric model order reduction by sparse-grid-based interp...

引用

European control Conference (ECC)

作者： Matthias Geuss Daniel Butnaru Benjamin Peherstorfer Hans-Joachim Bungartz Boris Lohmann Department of Mechanical Engineering Institute of Automatic Control Technische Universität München Garching Germany Department of Informatics Scientific Computing Group Technische Universität München Garching Germany

ISBN: (纸本)9781479947287

Current methods of parametric model order reduction based on the interpolation of system matrices are extended in this paper to an efficient method to tackle multidimensional parameter spaces. In order to overcome the curse of dimensionality the technique of sparse grids with multiple outputs is applied. The procedure is divided into an offline and online phase. In the offline phase the weighting matrices to the corresponding basis functions are computed with respect to generalized coordinates and appropriate matrix manifolds. The number of levels for the sparse grid can be set manually or determined by a tolerance criterion. The calculation of the interpolated system takes place during the online phase by evaluating the interpolant. The performance of the proposed method is demonstrated by two numerical examples.

关键词： Interpolation Sparse matrices Vectors Accuracy Manifolds Aerospace electronics

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：