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2020 Advances in Science and Engineering Technology International Conferences (ASET)最新文献

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CAD/CAM integration verification process based on data exchange method on free form surfaces 基于数据交换法的自由曲面CAD/CAM集成验证过程
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9171372
L. Al-Juboori, Ahmed A. A. Duroobi
A new technique for exchange data between Computer-Aided Design/Manufacturing (CAD/CAM) systems has been presented in this work. Where, a program designed using MATLAB environment has been developed to transfer these geometrical data and a technique to transfer geometrical curves to full descriptive surfaces using the UGS software as a CAM tool without any loss in their geometrical shape information also has been demonstrated, therefore the matrix of nth degree of the Bezier curves and B-spline curves and surfaces generation had been examined to use it in this work as an analyzed case to examine the suggested method and program script. It has been noticed through the implementation of the developed script and the simulation phase using the UGS system that this script can be applied to transform any free form surface profile shape from CAD module to CAM module without missing any kind of geometrical information in the final geometry of the profile, subsequently G-code for any free form geometry can be obtained. The current technique aligns conformity with the experimental result.
本文提出了一种计算机辅助设计/制造(CAD/CAM)系统间数据交换的新技术。其中,已经开发了使用MATLAB环境设计的程序来传输这些几何数据,并且还演示了使用UGS软件作为CAM工具将几何曲线转换为完整描述曲面的技术,而不会丢失其几何形状信息。因此,研究了贝塞尔曲线和b样条曲线的n次矩阵和曲面的生成,并将其作为一个分析案例来检验所建议的方法和程序脚本。通过开发的脚本的实施和使用UGS系统的仿真阶段,注意到该脚本可以应用于将任意自由曲面轮廓形状从CAD模块转换到CAM模块,而不会在最终的轮廓几何中丢失任何类型的几何信息,随后可以获得任意自由几何形状的g代码。现有技术与实验结果基本吻合。
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引用次数: 0
Kernel Symmetry for Convolution Neural Networks 卷积神经网络的核对称性
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118317
Munther A. Gdeisat, A. Desmal, Y. Moumouni, Z. Al-Aubaidy, A. Al Khodary, Asad Hindash, C. Wavegedara
A convolution neural network (CNN) uses kernels to filter applied images. These kernels learn their coefficients' values during the training process, thus they do not possess any centrosymmetry. Hence, the phase responses for these kernels are neither zero-phase nor linear-phase. This technique adds a group delay distortion to the filtered images. In this paper, we constrain the values of the kernels' coefficients to be centrosymmetric. This scheme guarantees the prevention of any distortion in the filtered images. In the proposed method, the CNN trains all the kernel coefficients as normal. Then every two-centrosymmetric coefficients are set to their average. This does not affect much the accuracy of the CNN. The proposed algorithm may be used to improve images generated using generative adversarial networks (GAN), autoencoders, image segmentation, and all other algorithms that generate images or video using CNN. This point still requires further study.
卷积神经网络(CNN)使用核来过滤应用的图像。这些核在训练过程中学习它们的系数值,因此它们不具有任何中心对称性。因此,这些核的相位响应既不是零相位也不是线性相位。这种技术为过滤后的图像增加了一组延迟失真。在本文中,我们约束核系数的值是中心对称的。该方案保证了滤波后的图像不会失真。在该方法中,CNN按照正态训练所有核系数。然后将每个双中心对称系数设为平均值。这对CNN的准确性影响不大。所提出的算法可用于改进使用生成式对抗网络(GAN)、自动编码器、图像分割以及使用CNN生成图像或视频的所有其他算法生成的图像。这一点还需要进一步研究。
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引用次数: 0
Materials Selection and Characterization of Fabric Membrane in Tactile Sensoring 触觉传感中织物膜的材料选择与表征
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118394
Sara Sarrar, Ebru Gunister, S. Vukusic, P. Liatsis
Tactile sensors are devices that are able to sense physical properties through direct contact. In this paper, we investigate on material selection for tactile sensors that mainly uses conductivity information to infer deformation. Hence, flexible and conductive materials are required to allow deformation over complex 3D surfaces and to allow the flow of electric current. Conductive fabrics have gained interest in research as membranes in tactile sensors. The main advantages of employing fabric materials are an improvement in signal hysteresis and an increase in detection sensitivity through employing multi-layered fabric structures. However, this adds on the cost of fabrication and the complexity of the design. In this contribution, a technical review is provided on various types of membranes in the context of large contact area tactile sensors. Moreover, two commercially available silver-plated knitted fabrics coated with silicone and the other with nitrile rubber are investigated as single layered membranes. The experimental results demonstrate that both the weft and warp directions of the fabric and material coating have a significant effect on the materials' mechanical and electrical performance. The elastic modulus of the nitrile rubber coated fabric is in the range of 0.14 MPa and 0.30 MPa, while that of the silicone-coated is in the range of 1.36 MPa and 1.87 MPa respectively for the weft and warp directions.
触觉传感器是能够通过直接接触来感知物理特性的设备。在本文中,我们研究了主要利用电导率信息推断变形的触觉传感器的材料选择。因此,需要柔性和导电材料来允许在复杂的3D表面上变形并允许电流流动。导电织物作为触觉传感器的膜,在研究中受到了广泛的关注。采用织物材料的主要优点是通过采用多层织物结构改善了信号迟滞,提高了检测灵敏度。然而,这增加了制造成本和设计的复杂性。在这一贡献,技术审查提供了各种类型的膜在大接触面积触觉传感器的背景下。此外,两种市售的镀银针织物涂有硅酮,另一种涂有丁腈橡胶作为单层膜进行了研究。实验结果表明,织物的经纬方向和材料涂层对材料的机电性能有显著影响。丁腈橡胶涂层织物在纬向和经向上的弹性模量分别为0.14 MPa和0.30 MPa,硅胶涂层织物的弹性模量分别为1.36 MPa和1.87 MPa。
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引用次数: 1
Compressed air for light vehicle propulsion 轻型车辆推进用压缩空气
Pub Date : 2020-02-01 DOI: 10.1109/aset48392.2020.9118278
A. Alami, Noaf Alblooki, M. Tawalbeh, Zainab Almerashi, Amna Alkharousi, T. Salameh
This work presents the design, manufacture and testing of a light vehicle powered by compressed air. The results for this phase of development focuses on matching the compressed air discharge with the demand cycle of the vehicle. The compressed air will discharge will drive an air turbine that is coupled with an electrical generator. The latter in turn drives an electric motor that provides power for the vehicle. The power requirements are articulated against resistive loads on the vehicle that arise from the expected operation cycle. The prototype was able to travel for 180 meters at around 3.5 km/h speed when the air pressure was a mere 6 bar. Further enhancements to the design are currently underway, to provide a direct mechanical load transmission to the wheels without using an electric motor, as well as using higher capacity pressure vessels.
本文介绍了一种以压缩空气为动力的轻型汽车的设计、制造和测试。这一阶段的开发结果侧重于使压缩空气排放与车辆的需求周期相匹配。排出的压缩空气将驱动与发电机相连的空气涡轮。后者反过来驱动为车辆提供动力的电动机。功率要求是针对车辆在预期运行周期中产生的电阻性负载而制定的。在气压仅为6巴的情况下,原型车能够以3.5公里/小时的速度行驶180米。目前正在对设计进行进一步的改进,以提供直接的机械负载传递到车轮,而不使用电动机,以及使用更高容量的压力容器。
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引用次数: 2
Cancer Transcriptome Analysis with RNA-Seq Using Quantum K-means Clustering Algorithm 基于量子k均值聚类算法的RNA-Seq癌症转录组分析
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118341
Abrar-Ul-Haq, Talal Bonny
A quantified RNA transcriptome is of particular interest in biomedical research as it can be for cancer diagnosis. Quantum algorithms can give exponential performance gains over their classical counterparts. In this paper, we implement a quantum clustering technique to classify the cells into different cancer types. To verify our implementation, we test it using the standard ‘gene expression cancer RNA-Seq’ dataset. The experimental results show that our algorithm achieves high accuracy of 94.8% (on average) in classifying the different types of cancer.
定量的RNA转录组在生物医学研究中特别有趣,因为它可以用于癌症诊断。量子算法可以提供指数级的性能增益。在本文中,我们实现了一种量子聚类技术,将细胞分类为不同的癌症类型。为了验证我们的实现,我们使用标准的“基因表达癌症RNA-Seq”数据集进行测试。实验结果表明,我们的算法在对不同类型的癌症进行分类时,准确率达到了94.8%(平均)。
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引用次数: 8
Understanding the Relationship Between Population Density and Low Voltage Faults Causes in Electricity Distribution Network 人口密度与配电网低压故障成因关系的认识
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118391
Charith Silva, M. Saraee
The distribution network operators (DNO) are the companies which bring electricity from the national transmission network to local homes and businesses. The essential primary duty of any DNO is to provide uninterrupted electricity supply to their customers. So, having a deep understanding of network faults has always been principal importance for reliable and sustainable power supply. The purpose of this study is to discover the relationship between population density and low voltage (LV) faults causes in an electricity distribution network using machine learning classification models. The study aims to use different classification models and comparing the results. The results of this study should outline the ideal classification model to use in understanding the relationship between population density and LV faults causes. In this study, the correlation method has been used for feature selection to select the most suitable variables to build the classification models. It should also give more insight into how the data should be prepared before being input into a machine learning classification models. Correlation analysis has revealed the multifaceted relationships that exist among the variables in multivariate fault data. From this study results and analysis, the shows that there is a new relationship between local population density and fault causes which suggest fault causes has a strong relationship with population density. These findings may help DNOs in policy-making and network design. Also, this research may assist Smart City planning projects.
配电网运营商(DNO)是将电力从国家输电网输送到当地家庭和企业的公司。任何DNO的主要职责是为客户提供不间断的电力供应。因此,对电网故障的深入了解一直是保证电力供应的可靠性和可持续性的重中之重。本研究的目的是利用机器学习分类模型来发现配电网络中人口密度与低压故障原因之间的关系。本研究旨在使用不同的分类模型并比较结果。这项研究的结果应该勾勒出理想的分类模型,用于理解人口密度与低压故障原因之间的关系。在本研究中,使用相关性方法进行特征选择,选择最合适的变量来构建分类模型。它还应该更深入地了解在输入到机器学习分类模型之前应该如何准备数据。相关性分析揭示了多变量故障数据中各变量之间存在着多方面的关系。从研究结果和分析来看,断层成因与当地人口密度之间存在一种新的关系,表明断层成因与人口密度有很强的关系。这些发现可能有助于网络运营商的决策和网络设计。同时,本研究也可以为智慧城市规划项目提供帮助。
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引用次数: 1
Comparing online and paper-based testing for physics courses at HCT, UAE 比较阿联酋HCT物理课程的在线和笔试
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118228
R. D. Forrest, Zahid Shareef, Khaldoun Tarawneh
online testing was introduced for the Physics 1 course at the Higher Colleges of Technology; Fujairah Men's College in the Fall 2016 semester. The students wrote an online test 1 in Blackboard Learn and a paper-based test 2. The validity of the online testing was assessed by comparing the performance of students, relative to the other students in their section, for the paper-based and online tests. Analysis of the results did not show any measurable difference in relative student performance for the online test compared to the paper-based version. An online system-wide Physics 1 final exam for all the seventeen colleges in the Higher Colleges of Technology system was introduced in the Fall semester of 2018. The results for this final exam and those from the subsequent two semesters are shown and briefly discussed. These results indicate a general improvement in grades subsequent to the Fall 2018 semester. Current and future work is described.
高等技术学院的物理1课程引入了在线测试;富查伊拉男子学院2016年秋季学期。学生们在Blackboard Learn上写了一个在线测试和一个纸本测试。在线测试的有效性是通过比较学生的表现来评估的,相对于他们所在部门的其他学生,在纸质和在线测试中。对结果的分析并没有显示出在线测试与纸质测试相比,学生的相对表现有任何可测量的差异。2018年秋季学期,高等技术学院系统17个学院的物理1在线期末考试正式启动。本次期末考试的结果以及之后两个学期的考试结果将被展示并简要讨论。这些结果表明,自2018年秋季学期以来,学生的成绩普遍有所改善。描述了当前和未来的工作。
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引用次数: 1
AGFA PACS software supported CT, MRI and PET windows impact on object appearances and size: phantom study AGFA PACS软件支持CT, MRI和PET窗口对物体外观和大小的影响:幻影研究
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118357
Entesar Zawam Dalah, Hana Abdel Hamed Elshahawy, Asma Mohamed Abdi, H. Elmehdi, W. Zgallai
The aim of the present work is to assess the effect of window width and window level selection on feature size in a 2D displayed multimodality images. DICOM images of CT, MR and PET were retrieved and retrospectively analyzed using a local PACS system running an image manipulation software AGFA NX v2.0 that supports several windows for each image modality. The images analyzed were phantom based using standardized NEMA ICE body phantom that consist of six fillable variable spheres sizes. A NOVA t-test was used for statistical difference studies. Using bone and abdomen/ pelvis CT windows resulted in a sphere underestimation of up to 3 mm. While using T1 and T2 MRI windows yielded an underestimation of up to 3.5 mm especially in the small spheres. Significant spheres size differences were seen with PET windows shown an overestimation of up to 7 mm using CE equal and thermal windows. Improper selection of windowing while viewing 2D displayed images can yield considerable inconsistency leading to unreliable measurement.
本研究的目的是评估窗口宽度和窗口水平选择对二维显示多模态图像特征大小的影响。检索CT、MR和PET的DICOM图像,并使用本地PACS系统进行回顾性分析,该系统运行图像处理软件AGFA NX v2.0,该软件支持每种图像模态的多个窗口。所分析的图像是基于标准化NEMA ICE体幻影的,该体幻影由六个可填充的可变球体大小组成。统计学差异研究采用NOVA t检验。使用骨和腹部/骨盆CT窗口导致球体低估达3mm。当使用T1和T2 MRI窗口时,特别是在小球体中,产生了高达3.5 mm的低估。在PET窗口中可以看到显著的球体大小差异,使用CE等温窗和热窗时,球体大小的高估可达7毫米。在观看2D显示图像时,窗口选择不当会产生相当大的不一致性,从而导致不可靠的测量。
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引用次数: 0
Aerodynamic Investigation and Design of Dimpled-Surface Airfoil for UAV Propellers 无人机螺旋桨凹面翼型气动研究与设计
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118346
Abdulqader Abdullah, S. Dol
This project focuses on studying the aerodynamic performance on dimpled airfoil for drones or UAVs propeller applications. The aim is to check if dimples will improve the efficiency of the structure by increasing lift to drag ratio and stall angle or decreasing drag force on the airfoil. The surface modification was done by considering the different arrangement and location of dimples at various Reynold numbers. Dimples help in reducing pressure drag when the airfoil is at larger angles of attack, as the angle of attack is increased, the wake formation starts to occur due to boundary layer separation. Dimple effects on the airfoil surface in same manner of what vortex generator does. Both methods aim to produce turbulent boundary layer in which wake area is reduced therefore reducing pressure drag. For the design process, ANSYS FLUENT was used to computationally investigate the effects of using dimples over the airfoil surface of NACA 2412. A comparative study was conducted between a normal airfoil (no dimples) and dimpled-surface airfoil, at different angles of attacks. It has been found that lift to drag ratio was increased by an improvement of 39.9%. It has been found that the flow separation on the NACA 2412 was delayed by the dimples effect. The critical angle of attack, which the stall occurs was also increased.
本项目主要研究用于无人机或无人机螺旋桨的酒窝翼型气动性能。目的是检查是否酒窝将提高效率的结构,通过增加升阻比和失速角或减少阻力对翼型。在不同雷诺数下,通过考虑裂纹的不同排列和位置来进行表面改性。当翼型处于较大的迎角时,酒窝有助于减少压力阻力,随着迎角的增加,由于边界层分离,尾迹形成开始发生。酒窝效应对翼型表面在相同的方式涡发生器做什么。这两种方法的目的都是产生湍流边界层,从而减少尾迹面积,从而减少压力阻力。在设计过程中,利用ANSYS FLUENT软件对NACA 2412翼型表面使用凹痕的影响进行了计算研究。一个比较研究之间进行了一个正常的翼型(没有酒窝)和酒窝表面翼型,在不同的攻击角度。结果表明,升阻比提高了39.9%。研究发现,韧窝效应延缓了NACA 2412的流动分离。发生失速的临界攻角也增加了。
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引用次数: 3
Evaluation of Characteristics of A390 - SiCp Squeeze Cast and Gravity Cast Composites A390 - SiCp挤压铸造和重力铸造复合材料的性能评价
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118349
Asarudheen Abdudeen, A. Mourad, J. Qudeiri, Aiman Ziout
Use of aluminum components has increased during the last decade due to the light weight requirements. With the intention to improve the strength, retaining the desirable properties of aluminium, particularly its lightness and corrosion resistance, many alloys have been developed. A390 is such an aluminum alloy, which is light weight and having good wear properties. A composite is a multiphase material and having better properties. A390 alloys and silicon carbide particulates were used to fabricate particulate reinforced aluminium metal matrix composites. Squeeze casting is a fabrication technique where solidification of liquid metal is promoted under applied hydrostatic pressure. In this work, A390- Silicon carbide composites of different weight fraction of silicon carbide were fabricated by squeeze casting and gravity casting through stir casting route. Squeeze castings were done at 50 MPa and 100 MPa squeeze pressures. Specimens of the composites were prepared and characterized through microstructural and wear analysis, tensile and hardness tests. The test results obtained for squeeze casting and gravity casting composites were compared and the effect of squeeze pressure was studied.
由于重量轻的要求,铝组件的使用在过去十年中有所增加。为了提高强度,保持铝的理想性能,特别是其轻性和耐腐蚀性,已经开发了许多合金。A390就是这样一种铝合金,重量轻,耐磨性能好。复合材料是一种多相材料,具有较好的性能。采用A390合金和碳化硅颗粒制备了颗粒增强铝基复合材料。挤压铸造是一种在施加静水压力下促进液态金属凝固的制造技术。采用搅拌铸造的方法,采用挤压铸造和重力铸造两种方法制备了碳化硅中不同重量分数的A390-碳化硅复合材料。挤压铸件分别在50mpa和100mpa的挤压压力下进行。制备了复合材料试样,并通过显微组织、磨损分析、拉伸和硬度测试对其进行了表征。对挤压铸造和重力铸造复合材料的试验结果进行了比较,并对挤压压力的影响进行了研究。
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引用次数: 7
期刊
2020 Advances in Science and Engineering Technology International Conferences (ASET)
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