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2017 Electric Electronics, Computer Science, Biomedical Engineerings' Meeting (EBBT)最新文献

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Rocking motion of the baby sleeping on the mother's lap: Modeling and prototype automatic swing cradle design 婴儿在母亲腿上睡觉时的摇摆运动:自动摇摆摇篮的建模与原型设计
Fatih Elmas, Abdurrahman Yılmaz, M. Garip
The main purpose of this study is to overcome the difficulties experienced by the mothers during the sleeping period of the babies and to put the babies to sleep in a comfortable and peaceful way as if the babies were in the mother's lap. In this direction, the motion that the mother made while sleeping her baby on the lap was modeled, and a cradle designed to repeat mother movements based on this model. In the modeling phase, 10 subjects were experimented. A doll was given to the subjects and it was requested that to perform a baby rocking motion on their lap for 10 seconds. I he performed motions of the subjects were recorded with accelerometer of the mobile phone placed on the doll via an application (Accelerometer Analyser) compatible with the Android operating system. From the acceleration data, the motion trajectories of each subject were achieved through MATLAB. For this aim, firstly the noise in the data was filtered with moving average filter and then trapezoidal integration was applied twice to the filtered acceleration data. After that, the ideal route for the rocking motion on the lap was reached in consideration of the trajectories of the subjects. The mathematical model of the ideal route was derived by least square curve fitting method and the cradle following the mathematical model was designed in Solidworks environment. At the end of the study a prototype cradle was produced.
本研究的主要目的是为了克服母亲在婴儿睡眠期间所遇到的困难,让婴儿像躺在母亲的腿上一样舒适、平静地入睡。在这个方向上,模拟了母亲在把婴儿放在腿上睡觉时所做的动作,并根据这个模型设计了一个重复母亲动作的摇篮。在建模阶段,对10名受试者进行实验。研究人员给了研究对象一个娃娃,并要求它在他们的腿上摇晃婴儿10秒钟。通过与Android操作系统兼容的应用程序(accelerometer Analyser),用放置在娃娃上的手机的加速度计记录受试者的动作。根据加速度数据,通过MATLAB实现了每个被试的运动轨迹。为此,首先对数据中的噪声进行移动平均滤波,然后对滤波后的加速度数据进行两次梯形积分。在此基础上,结合受试者的运动轨迹,确定了理想的摇摆运动路径。采用最小二乘曲线拟合法推导了理想路线的数学模型,并在Solidworks环境中按照该数学模型设计了支架。在研究结束时,制作了一个原型摇篮。
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引用次数: 1
Memristor-based timing circuit 基于忆阻器的定时电路
S. Yener, R. Mutlu, T. Yener, H. Kuntman
Memristor has been proposed as the fourth missing fundamental circuit element in 1971. This new circuit element has a charge controlled resistance, saturation mechanism and zero-crossing hysteresis loop which cannot be mimicked by previously known circuit elements. It is a promising candidate for both digital and analog electric circuit applications. In this work, a memristor based timer circuit is proposed. Concept of the circuit is presented and its analysis is done. Simulation of the timer is done using the linear drift model of the TiO2 memristor and the result is compared to the analytical calculations.
1971年,忆阻器被认为是第四个缺失的基本电路元件。这种新型电路元件具有电荷控制电阻、饱和机制和过零迟滞回线,是以往已知电路元件无法模仿的。它是数字和模拟电路应用中很有前途的候选者。本文提出了一种基于忆阻器的定时器电路。提出了该电路的基本概念,并对其进行了分析。利用TiO2忆阻器的线性漂移模型对定时器进行了仿真,并与解析计算结果进行了比较。
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引用次数: 5
Modeling the toxicity of textile industry wastewater using artificial neural networks 用人工神经网络模拟纺织工业废水的毒性
R. Samli, V. Z. Sonmez, N. Sivri
Toxicity tests are required to detect the possible effects of pollutants on organisms. This study investigates the effect of Chemical Oxygen Demand (COD), suspended solid (SS) and pH parameters on toxicity of textile industry wastewaters except for the color parameter, effect of which is well known. Fish bioassay taking place in legal regulation of Turkey was used as toxicity test. At the end of the toxicity test, various values of the parameters were predicted through Artificial Neural Networks (ANN). In addition, Artificial Neural Networks were used to calculate the effect of each parameter on toxicity (%). Accordingly, COD is the parameter which mostly affects toxicity following color parameter and SS is the parameter which has the minimum effect. It is found that results deviate at the rate of 15.41% when values of COD parameter are excluded from the model input data and the error rate becomes 5.07% when SS parameter is excluded. In this study, the effect of each input of each parameter, which is an open ecosystem, based on selected parameters is successfully predicted through Artificial Neural Networks which is a heuristic method.
为了检测污染物对生物体可能产生的影响,需要进行毒性试验。研究了除颜色参数外,化学需氧量(COD)、悬浮物(SS)和pH参数对纺织工业废水毒性的影响。采用土耳其法律规定的鱼类生物测定法进行毒性试验。在毒性试验结束时,通过人工神经网络(ANN)预测各参数值。此外,采用人工神经网络计算各参数对毒性(%)的影响。因此,COD是影响毒性最大的参数,其次是颜色参数,SS是影响毒性最小的参数。结果发现,在模型输入数据中剔除COD参数值后,结果偏差率为15.41%,剔除SS参数后,错误率为5.07%。在本研究中,每个参数的每个输入都是一个开放的生态系统,基于选定的参数,通过人工神经网络这种启发式方法成功地预测了每个参数的每个输入的效果。
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引用次数: 1
Diabet diagnosis with support vector machines and multi layer perceptron 基于支持向量机和多层感知机的糖尿病诊断
Mehmet Kurt, T. Ensari
Diabet is one of the metabolic trouble which is generally occurs genetic and environmental components. It happens increasing of blood level. In this study, diabet illness has been diagnosed with its features by classification with support vector machines (SVM) and artificial neural networks (multi layer perceptron). The method used for diagnosis is aritificial neural networks multi layer perceptron. We used SVM-Linear, SVM-Polinomial and SVM-Radial models. Diabet data set which will be used in our experiments obtained from UCI web site and organized. In this study, we compared several algorithms to diagnose illness rates. Diagnose right predictions (accuracy) are %77.08 for multi layer perceptron, %77.47 for support vector machines, %55.33 for polynomial kernel, %65.10 for radial based kernel and sigmoid kernel. Maximum recognition rate is %77.47 for SVM learning method.
糖尿病是一种由遗传和环境因素共同引起的代谢性疾病。它发生在血液水平升高。本研究采用支持向量机(SVM)和人工神经网络(多层感知器)对糖尿病疾病进行分类诊断。诊断方法采用人工神经网络多层感知器。我们使用SVM-Linear、SVM-Polinomial和SVM-Radial模型。我们实验中用到的糖尿病数据集是从UCI网站上获取并整理的。在这项研究中,我们比较了几种诊断发病率的算法。多层感知机的诊断正确预测(准确率)为%77.08,支持向量机为%77.47,多项式核为%55.33,径向核和s型核为%65.10。支持向量机学习方法的识别率最高为77.47 %。
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引用次数: 2
Gradient descent based classification of road induced disturbances for active suspension systems 基于梯度下降的主动悬架系统道路干扰分类
Mehmet Iscan, Mert Sever
Active suspensions are designed to meet conflicting performance requirements such as ride comfort and safety. Achievable ride comfort performance without reaching the limits of road holding and suspension bottoming, is limited by the road disturbance roughness level. In order to obtain best ride comfort performance against different road induced disturbances, it is essential to switch among different controllers according to road roughness level. In this study, a classification algorithm based on logistic regression trained by gradient descent was presented to switch the controller with respect to road disturbance values. The classification algorithm with logistic regression model is trained by the road disturbance data provided by standards. A disturbance observer to estimate the road induced disturbance is designed, then a sigmoid activation function was proposed to change the controller by using only the road disturbance data. The suggested algorithm was tested on the road induced disturbance produced by observer. It was proved that the algorithm without complexity classified the road induced disturbance with the one hyperplane reducing the overfitting condition in training process. As a result, the proposed algorithm can be efficiently used to detect the controller switching instants in real time application.
主动悬架的设计是为了满足诸如乘坐舒适性和安全性等相互冲突的性能要求。在不达到道路控制和悬挂底限的情况下,可实现的乘坐舒适性性能受到道路扰动粗糙度水平的限制。为了在不同的路面扰动下获得最佳的平顺性,需要根据不同的路面平整度在不同的控制器之间进行切换。本文提出了一种基于梯度下降训练的逻辑回归分类算法,用于根据道路扰动值切换控制器。利用标准提供的道路扰动数据训练逻辑回归模型的分类算法。设计了一个干扰观测器来估计道路诱导的干扰,然后提出了一个s型激活函数来改变仅使用道路干扰数据的控制器。对观测器产生的道路诱导干扰进行了测试。结果表明,该算法对道路诱导的干扰用一个超平面进行无复杂度分类,减少了训练过程中的过拟合情况。结果表明,该算法可以有效地用于实时应用中控制器切换瞬间的检测。
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引用次数: 0
Classification of neuromuscular junction and tendon recordings of neuromuscular diseases by their spectrogram 神经肌肉连接处的分类和神经肌肉疾病的肌腱记录的频谱图
T. Artug, İ. Göker, O. Osman, B. Baslo
In this study, the effect of spectrograms from neuromuscular junction and tendon records for normal, neurogenic and myopathic motor units being constructed via EMG Simulator v3.6 on the differential diagnosis were investigated. Multi-layer perceptron is chosen as classifier. If only the neuromuscular junction records are applied to the network, the performance is 73.33%. If only tendon records are applied to the input of network, the performance is 94.67%. When neuromuscular junction and tendon records are applied together to the network, the performance is 100%.
本研究通过EMG模拟器v3.6构建正常、神经源性和肌病运动单元的神经肌肉连接处和肌腱记录的频谱图对鉴别诊断的影响进行了研究。选择多层感知器作为分类器。如果仅将神经肌肉接点记录应用于网络,则性能为73.33%。仅将跟腱记录应用于网络输入时,性能为94.67%。当神经肌肉连接和肌腱记录一起应用于网络时,性能为100%。
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引用次数: 0
Real-time application of travelling salesman problem using Google Maps API 利用Google地图API实时应用旅行推销员问题
Mehmet Hamza Erol, Faruk Bulut
The Travelling Salesman Problem is defined as returning to the starting point after visiting all the points with the least cost. In this study, a real-world application that calculates the route of the Travelling Salesman Problem using the current traffic intensity information from Google Maps is prepared. Different methods such as Exhaustive Search, Heuristic A-Star Search, BitMask Dynamic Programming, Branch-and-Bound Algorithm and Greedy Search have been used in developing the desktop application. All these methods but Greedy Search have given the same routes. A user-friendly interface, displaying the shortest route in distance or duration on Google Maps, has been developed by adding different features.
旅行推销员问题的定义是:以最小的代价访问所有的点后返回到起点。在本研究中,准备了一个现实世界的应用程序,该应用程序使用来自Google Maps的当前交通强度信息来计算旅行商问题的路线。穷尽搜索、启发式a星搜索、位掩码动态规划、分支定界算法和贪心搜索等方法已被应用于桌面应用程序的开发。除了贪心搜索之外,所有这些方法都给出了相同的路径。通过增加不同的功能,开发出了在谷歌地图上显示距离或时间最短的路线的用户友好界面。
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引用次数: 10
Static analysis of different thickness cervical implants using finite element analysis and comparison of results 采用有限元法对不同厚度颈椎假体进行静力分析并比较结果
Y. Çelık, Y. Usta, Mohammad Ghosheh
It is known that the apparent difference between the geometric factors and loading conditions in the cervical cage is caused by the limited high pressure and thus the collapse of the adjacent vertebral body of the cage, leading to clinical problems such as vertebral body rupture, bone loss, stability and fusion failure. Numerous techniques and methods with advantages and disadvantages are applied for these clinical problems. But the cost of spine testers and biomechanical spine testing is a time-consuming process, and other alternatives and end-to-end analysis of implants are worthwhile and necessary to develop. The aim of this study is to calculate the equivalent stretching and deformation of cervical cage implants of different thicknesses with the Finite Element Static Analysis models to quantitatively evaluate the tendency of collapse in clinically encountered conditions. In this context, PEEK (polyether ketone) has been chosen as a material because of the incentive results in recent years with the use of integrated screws and cages in a select group of patients. A force of 100 N was applied to the upper surface of the implant in accordance with the standards and the lower surface of the implant model was defined as a fix support. As a result of the analysis made on 3 different models with different thicknesses, the total deformation on the 5.0 mm, 6.0 mm and 7.0 mm systems was 0.073161 mm; 0.032413 mm; 0.025319 mm respectively, and the equivalent stresses was 47.722 MPa; 24.126 MPa and 20.43 MPa respectively. These values were found to be smaller than the yield strength of the material used (165 MPa), and as predicted, the maximum deformation of the model and the decrease in equivalent stress were observed to decrease. In addition, there are places where there is a singular load accumulation on the design, which in turn has confirmed that the use of costly and time-consuming testing processes and finite element analysis to avoid faulty production is appropriate.
已知颈椎保持器内几何因素和载荷条件的明显差异是由于有限的高压导致保持器相邻椎体塌陷,从而导致椎体破裂、骨质丢失、稳定性和融合失败等临床问题。许多技术和方法各有优缺点,适用于这些临床问题。但是脊柱测试和生物力学脊柱测试的成本是一个耗时的过程,其他替代方案和植入物的端到端分析是值得和必要的。本研究的目的是利用有限元静力分析模型计算不同厚度颈椎笼植入物的等效拉伸和变形,定量评价临床遇到的情况下颈椎笼植入物的塌陷倾向。在这种情况下,PEEK(聚醚酮)被选择作为一种材料,因为近年来在一组选定的患者中使用集成螺钉和保持器的激励结果。按照标准对种植体上表面施加100 N的力,将种植体模型下表面定义为固定支撑。通过对3种不同厚度模型的分析,5.0 mm、6.0 mm和7.0 mm体系的总变形量为0.073161 mm;0.032413毫米;0.025319 mm,等效应力为47.722 MPa;分别为24.126 MPa和20.43 MPa。这些值小于所用材料的屈服强度(165 MPa),并且正如预测的那样,观察到模型的最大变形和等效应力的减小。此外,还有一些地方在设计上有一个单一的负载积累,这反过来又证实了使用昂贵和耗时的测试过程和有限元分析来避免错误的生产是适当的。
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引用次数: 1
Semi-interpenetration with conducting polyanilines on poly(acrylamide-co-kaolin) composite 导电聚苯胺在聚丙烯酰胺-共高岭土复合材料上的半互穿
Aybüke Tavasli, B. Taşdelen
In this work, clay minerals such as kaolin particles were embedded within the network of poly(acrylamide) hydrogel (PAAm) using free radical solution polymerization method. Aniline monomer was absorbed in the network of PAAm/Kaolin composite hydrogel and followed using free radical solution polymerization at room temperature. The novel semi-interpenetrating network was comprised of linear polyaniline immersed in PAAm/Kaolin composite. Electrical conductivity of the hydrogels was measured using four-probe technique. The conductivity for the prepared new semi-interpenetrating polymer network (s-IPN) is found to be 1.1 ×10−4 S.cm−1. Thus, a new s-IPN composite hydrogel with good conductive properties was prepared.
本研究采用自由基溶液聚合的方法,将高岭土颗粒等粘土矿物嵌入到聚丙烯酰胺水凝胶(PAAm)的网络中。将苯胺单体吸附在PAAm/高岭土复合水凝胶中,在室温下进行自由基溶液聚合。该新型半互穿网络由线状聚苯胺浸没在PAAm/高岭土复合材料中组成。采用四探针技术测定了水凝胶的电导率。所制备的新型半互穿聚合物网络(s-IPN)的电导率为1.1 ×10−4 S.cm−1。制备了一种导电性能良好的s-IPN复合水凝胶。
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引用次数: 0
Automatic skin lesion segmentation 自动皮肤病灶分割
H. Ozkan, Reyhan Gurleyen, Elif Usta, Raziye Kübra Kumrular
In the modern world, cancer has increasingly become a health problem. It has been listed as the first three disease among the ‘cause-known deaths’ in our country. Malignant Melanoma, one of the skin cancer types, is the cause of 75% of all skin cancer related deaths even though it is 4% of all skin cancer cases. The examination of the diseases are diagnosed through visual inspections by the dermatologists. This brings the possibility of human error. In this study, a computer based segmentation system is developed to assist the expert dermatologists for determining whether the lesions on the skin are cancerous or not. The edges of lesions on the original images is drawn by enhancing and segmenting the lesions via image processing techniques, since lesions' shapes, color distributions and edges are important parameters for cancer determination process. In this way, the error rates are reduced by making it easier for the dermatologist to examine the lesions and make decisions.
在现代社会,癌症日益成为一个健康问题。它已被列为我国“死因已知”的前三种疾病。恶性黑色素瘤是皮肤癌的一种类型,尽管它只占所有皮肤癌病例的4%,但却占所有皮肤癌相关死亡人数的75%。疾病的检查是由皮肤科医生通过目视检查来诊断的。这带来了人为错误的可能性。本研究开发了一种基于计算机的分割系统,以协助皮肤科专家判断皮肤上的病变是否为癌变。由于病变的形状、颜色分布和边缘是癌症诊断过程的重要参数,因此通过图像处理技术对病变进行增强和分割,从而在原始图像上绘制病变的边缘。通过这种方式,使皮肤科医生更容易检查病变并做出决定,从而降低了错误率。
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引用次数: 10
期刊
2017 Electric Electronics, Computer Science, Biomedical Engineerings' Meeting (EBBT)
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