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Treatment of cardiac signal for a modeling by RBF 基于RBF模型的心脏信号处理
M. Kedir-Talha, S. Ould-Slimane
In telemedicine, the transmission of the cardiac signal or for the diagnosis of an automatic Holter, it is important to model the heartbeat. Our aim in this work is the modeling of the ECG data by neural networks using Radial Base Function RBF. The treatment and cutting of ECG Holter helped us to find the best linear combination of five Gaussians that realizes this model. With a bank of Gaussian functions and using the algorithm Orthogonal Regressive Forward, we achieved an error of 10-4 in the initialization step. The optimization of this modeling is performed by the gradient algorithm.
在远程医疗中,心脏信号的传输或自动动态心电图的诊断,建立心跳模型是很重要的。本研究的目的是利用径向基函数(RBF)对心电数据进行神经网络建模。心电动态电位的处理和切割帮助我们找到了实现该模型的五个高斯函数的最佳线性组合。利用一组高斯函数和正交正回归算法,我们在初始化步骤中获得了10-4的误差。采用梯度算法对模型进行优化。
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引用次数: 2
Intelligent environments supporting the care of multi-morbid patients: a concept for patient-centered information management and therapy 支持多种疾病患者护理的智能环境:以患者为中心的信息管理和治疗的概念
Lukas Pielawa, A. Helmer, M. Brell, A. Hein
Evermore people are suffering from multi-morbidity, an accumulation of different afflictions that mutually affect each other. Simultaneously treatments which were previously conducted stationary are nowadays carried out in home settings. Therefore more and more ICT is employed to support such treatments. However, most of these systems are isolated and not accounting for technical interoperability or the determining factor that different treatments influence each other. An approach for an integrated system to treat multi-morbid patients is presented within this paper. It aims to join various means of monitoring, health data storage and telemedicine into a holistic system to account for the needs of such patients. Already implemented subsystems are presented and considerable advantages of the system under construction are illustrated by a use-case for its application.
越来越多的人患有多种疾病,这是不同疾病相互影响的累积。同时,以前在固定场所进行的治疗现在在家庭环境中进行。因此,越来越多的信息通信技术被用于支持此类治疗。然而,这些系统中的大多数都是孤立的,没有考虑到技术互操作性或不同处理方式相互影响的决定性因素。本文提出了一种综合系统治疗多病患者的方法。它旨在将各种监测、健康数据存储和远程医疗手段结合成一个整体系统,以满足这类患者的需求。介绍了已经实现的子系统,并通过其应用的一个用例说明了正在构建的系统的相当大的优点。
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引用次数: 6
Bio-chip ASIC and printed flexible cable on paper substrate for wearable healthcare applications 用于可穿戴医疗保健应用的生物芯片ASIC和印刷柔性电缆
Geng Yang, Qiansu Wan, Lirong Zheng
In this paper, we describe two cutting-edge technologies for the emerging wearable healthcare applications: application specific integrated circuit (ASIC) and printed electronics on a flexible paper substrate. The ASIC enables a compact integration of active circuit blocks on a chip. Due to its tiny size, the ASIC makes the wearable unit unobtrusive and maximizes the wearer's comfort. The electrical performance of a paper based inkjet printed flexible cable is also exhibited. Combining the two technologies together, an example of electrocardiogram (ECG) signal recording is presented.
在本文中,我们描述了新兴的可穿戴医疗保健应用的两种前沿技术:专用集成电路(ASIC)和柔性纸基板上的印刷电子。ASIC使有源电路块在芯片上的紧凑集成成为可能。由于其微小的尺寸,ASIC使可穿戴设备不引人注目,并最大限度地提高了佩戴者的舒适度。本文还展示了一种纸基喷墨印刷柔性电缆的电性能。结合这两种技术,给出了一个心电图信号记录的实例。
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引用次数: 3
Modeling nano-communication networks using neurocomputing algorithm 基于神经计算算法的纳米通信网络建模
Amir Jabbari, I. Balasingham
In this paper, a novel practical neurocomputing algorithm is introduced and elaborated in order to design and implement a nano-communication network for various applications such as medical and industrial signal processing. Firstly, the idea of artificial neural network (ANN) for data processing is explained and feasibility of modeling a nano-scale network by an optimized neurocomputing algorithm is discussed using binary neuro-modeling. Moreover, it is stressed how nano-scaling increases the complexity of the communication network considering the existing constraints on computation resources, and accuracy of the proposed networking algorithm, either for communication or computation. Furthermore, the developed nano-scale networking technique is more optimized in order to assist the so-called neural nano-machines, to conduct the simple nano-nodes working more effectively and collaboratively. To experiment the performance of the presented bio-inspired nano-network, a practical test scenario is implemented on Imote2 sensor nodes to compare the accuracy of data processing techniques, showing how a large-scale network is replaced by an efficient nano-scale networking algorithm. Finally, the obtained results are illustrated and more elaborated to provide a complete procedure for future developments of the bio-inspired networking in nano-scale.
本文介绍并阐述了一种新颖实用的神经计算算法,以设计和实现用于医疗和工业信号处理等各种应用的纳米通信网络。首先,阐述了人工神经网络(ANN)数据处理的思想,并利用二值神经模型讨论了优化神经计算算法对纳米级网络建模的可行性。此外,考虑到现有计算资源的限制,以及所提出的网络算法在通信或计算方面的准确性,强调了纳米尺度如何增加通信网络的复杂性。此外,所开发的纳米级网络技术更优化,以协助所谓的神经纳米机器,使简单的纳米节点更有效地协同工作。为了实验所提出的仿生纳米网络的性能,在Imote2传感器节点上实现了一个实际的测试场景,以比较数据处理技术的准确性,展示了大规模网络如何被高效的纳米级网络算法所取代。最后,对得到的结果进行了说明和详细阐述,为未来纳米尺度仿生网络的发展提供了一个完整的过程。
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引用次数: 1
The effect of load on variances of object replacing arm movements 负荷对物体置换臂运动方差的影响
R. Tibold, J. Laczko
A three-dimensional (3D) dynamic upper limb model was developed to simulate muscle forces in slightly restricted point-to-point movements. Healthy subjects performed point-to-point movements repetitively with an object held in the hand. The object was either a very light (0.06kg) or a heavier one (2kg). Joint coordinates were recorded. Using joint coordinates, and muscle attachment sites taken from the literature, virtual muscle forces acted during the execution of the movement were calculated for 4 arm muscles. Variances of hand position trajectories, joint configuration trajectories and muscle activities (measured EMG and muscle forces of biceps, triceps, delta anterior and delta posterior) were calculated for both object conditions. There were no significant differences for hand position and arm configuration variances considering the two object conditions while muscle activity variances (for all muscles except deltoid posterior) increased significantly by executing the movement with heavier object. Since high muscle activity variances didn't result equally high increments in kinematic variances we suggest that the stabilization of the outer descriptors (kinematic properties) of the arm is resulted by the enhanced muscle cooperation through synergies when the motor task was performed with heavier object in the hand.
开发了一个三维(3D)动态上肢模型来模拟轻微受限的点对点运动中的肌肉力。健康受试者用手拿物体进行点对点重复运动。这个物体要么很轻(0.06公斤),要么很重(2公斤)。记录关节坐标。利用关节坐标和从文献中获取的肌肉附着点,计算运动执行过程中4块手臂肌肉的虚拟肌肉力。计算了两种物体条件下手部位置轨迹、关节形态轨迹和肌肉活动(测量的肌电图和二头肌、三头肌、前三角肌和后三角肌的肌肉力量)的方差。考虑到两种物体条件下,手的位置和手臂结构的差异没有显著差异,而肌肉活动的差异(除后三角肌外的所有肌肉)在执行较重的物体运动时显著增加。由于高的肌肉活动差异并没有导致同样高的运动差异增量,我们认为手臂外部描述符(运动特性)的稳定是由于当手拿较重的物体执行运动任务时,通过协同作用增强的肌肉合作造成的。
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引用次数: 0
Metamaterials applications in radiocommunication and biomedical engineering 超材料在无线电通信和生物医学工程中的应用
D. Faktorova
Metamaterials are complex materials with artificial structure which have special features. These features attract many scientists to use metamaterial structure in many research areas [1]. The metamaterials can enhance properties of microwave and optical passive and active components and also to exceed some limitation of devices used in technical practice [1]. Examples of scientific and technical fields which are concerned are electrical engineering, micro- and nanotechnology, microwave engineering, optics, optoelectronics, and semiconductor technologies, biomedical engineering [1]. In plasmonics, the interplay between propagating electromagnetic waves and free-electron oscillations in materials are exploited to create new components and applications [1]. On the other hand, metamaterials refer to artificial composites in which small artificial elements, through their collective interaction, create a desired and unexpected macroscopic response function that is not present in the constituent materials [1].
超材料是具有特殊特性的人工结构复杂材料。这些特点吸引了许多科学家在许多研究领域使用超材料结构。这些超材料可以提高微波和光学无源元件和有源元件的性能,也可以超越技术实践中使用的器件的某些限制。涉及的科学和技术领域的例子有电气工程、微纳米技术、微波工程、光学、光电子和半导体技术、生物医学工程等。在等离子体动力学中,电磁波的传播和材料中的自由电子振荡之间的相互作用被用来创造新的组件和应用[1]。另一方面,超材料是指人造复合材料,其中小的人造元素通过它们的集体相互作用,创造了一个在组成材料[1]中不存在的期望和意想不到的宏观响应函数。
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引用次数: 3
Bandwidth table construction regarding CDMA interferences in synchronized QoS ad hoc networking 同步QoS自组网中CDMA干扰的带宽表构建
Hisayoshi Sugiyama
A method is proposed for bandwidth table constructions in synchronized QoS ad hoc networking. In this scheme of networking, specified bandwidth is reserved for each communication path based on bandwidth tables constructed by each terminal. This bandwidth reservation is desirable in diaster areas where rescue teams need to share wideband picture images of distant locations sent from rescue robots or human scouts. However, because process gain of associated CDMA operation is assumed to be high enough, unreasonable ra-diowave bandwidth is necessary for the system designs. The proposed method for bandwidth table construction regards CDMA interferences when the process gain is set arbitrary. With this method, system designs with reasonable radiowave bandwidth become possible. Simulations confirm the network performances with the proposed method.
提出了一种同步QoS自组织网络中带宽表的构造方法。在这种组网方案中,根据每个终端构建的带宽表,为每条通信路径预留指定的带宽。这种带宽保留在灾区是可取的,因为救援队需要共享从救援机器人或人类侦察兵发送的遥远地点的宽带图像。然而,由于假定相关CDMA操作的过程增益足够高,系统设计就需要不合理的射频带宽。本文提出的带宽表构造方法考虑了任意增益设置时的CDMA干扰。利用这种方法,可以设计出合理的无线电波带宽。仿真结果验证了该方法的网络性能。
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引用次数: 3
Design of the inductive power supply system for the artificial accommodation system 人工调节系统感应供电系统的设计
J. Nagel, M. Krug, G. Bretthauer
The Artificial Accommodation System is a micro mechatronic system which will be implanted into the capsular bag to replace the human crystalline lens. Depending on the patients' actual need for accommodation, the system autonomously adapts the refractive power of its integrated optical element in a way that the projection on the patients' retina results in a sharp image. As the Artificial Accommodation System is an active implant, its subsystems have to be supplied with electrical energy. Therefore an inductive power supply system will be developed which is able to autonomously power the Artificial Accommodation System over a period of 24h and can be recharged wirelessly. This Paper describes the design process of the coils needed for inductively transferring power to the implant. It can be shown that by means of optimization it is possible to transfer 50 mW of power to the interior of the Artificial Accommodation System.
人工调节系统是一种微型机电一体化系统,它将被植入胶囊袋中,以取代人体的晶状体。根据患者的实际需要,该系统自动调整其集成光学元件的折射能力,从而使患者视网膜上的投影产生清晰的图像。由于人工调节系统是一种主动植入物,它的子系统必须提供电能。因此,将开发一种感应供电系统,该系统能够在24小时内自主为人工调节系统供电,并可以无线充电。本文介绍了电感式向植入体传输功率所需线圈的设计过程。结果表明,通过优化,可以将50兆瓦的功率传输到人工调节系统的内部。
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引用次数: 2
Multivariate control charts for surgical procedures 外科手术的多变量控制图
M. Abdollahian, S. Ahmad, Shamsul Huda
Patient's progress in the Intensive Care Unit is characterised by more than one quality characteristics. This paper employs univariate and multivariate control charts to monitor patient progress in the Intensive Care Unit. A definitive comparison is made, between the performance of univariate and multivariate control chart methods, in the monitoring of the patient recovery process.
病人在重症监护室的进展具有不止一种质量特征。本文采用单变量和多变量控制图来监测重症监护病房的患者进展。在监测患者康复过程中,单变量和多变量控制图方法之间的性能进行了明确的比较。
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引用次数: 3
Non-invasive detection and classification of skin cancer from visual and cross-sectional images 基于视觉和横断面图像的皮肤癌无创检测和分类
N. Dhinagar, M. Celenk
This paper describes the various methods that are implemented to diagnose a sample of skin for malignancy. Skin cancer detection at the earliest stage possible is vital to increase the chance of survival of the affected patient. Imaging in this field happens to be at the cross-roads. Skin cancer imaging can be visual in nature (nevoscope imaging, electron microscope, naked eye) or non-visual (optical coherence tomography (OCT), Raman spectroscopy). ABCDs is a set of rules that are the first step that is applied to determine the nature of a mole. Although extensively used as front line methodology for malignancy in moles, it is not deterministic in nature. Each of the techniques described in this paper analyze the samples of the skin lesion under the scanner in a varied way. The samples of the skin lession can be either a visual depiction or in the form of a cross-section. We have after extensive experimentation arrived at two different ways to analyze the samples obtained as a result of the imaging. For the sample that we have obtained as a result of the nevoscope visual imaging, the power spectra appears to be the most discriminative and effective way of classification as against the use of discrete wavelet transformation in case of the cross-sections obtained from OCT. The aim is to ultimately build an automated system that has the capability to discriminating and classifying the skin samples into three main classes; namely, benign, precancerous and malignant independent of the scanning methodology.
本文描述了用于诊断皮肤恶性肿瘤样本的各种方法。在尽可能早的阶段发现皮肤癌对于增加受影响患者的生存机会至关重要。这一领域的成像恰好处于十字路口。皮肤癌的自然成像可以是视觉的(内窥镜成像、电子显微镜、肉眼),也可以是非视觉的(光学相干断层扫描(OCT)、拉曼光谱)。abcd是一组规则,是用于确定摩尔性质的第一步。虽然广泛使用作为一线方法学恶性痣,它是不确定的性质。本文描述的每一种技术都以不同的方式分析扫描仪下的皮肤病变样本。皮肤病变的样本可以是视觉描述或以横截面的形式。经过大量的实验,我们得出了两种不同的方法来分析成像得到的样品。对于我们通过nevoscope视觉成像获得的样本,相对于使用离散小波变换获得的oct横截面,功率谱似乎是最具鉴别性和最有效的分类方法。目的是最终建立一个能够将皮肤样本区分和分类为三大类的自动化系统;即,良性,癌前和恶性独立的扫描方法。
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引用次数: 4
期刊
... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies
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