A graphical user interface(GUI)for model-based radiation-induced acoustic computed tomography

Radiation-induced acoustic computed tomography(RACT)is an evolving biomedical imaging modality that aims to reconstruct the radiation energy deposition in tissues.Traditional backprojection(BP)reconstructions carry noisy and limited-view artifacts.Model-based algorithms have been demonstrated to overcome the drawbacks of BPs.However,model-based algorithms are relatively more complex to develop and computationally demanding.Furthermore,while a plethora of novel algorithms has been developed over the past decade,most of these algorithms are either not accessible,readily available,or hard to implement for researchers who are not well versed in programming.We developed a user-friendly MATLAB-based graphical user interface(GUI;RACT2D)that facilitates back-projection and model-based image reconstructions for twodimensional RACT problems.We included numerical and experimental X-ray-induced acoustic datasets to demonstrate the capabilities of the GUI.The developed algorithms support parallel computing for evaluating reconstructions using the cores of the computer,thus further accelerating the reconstruction speed.We also share the MATLAB-based codes for evaluating RACT reconstructions,which users with MATLAB programming expertise can further modify to suit their needs.The shared GUI and codes can be of interest to researchers across the globe and assist them in e±cient evaluation of improved RACT reconstructions.

Some computer graphical user interfaces in radiation therapy

In this review, five graphical user interfaces(GUIs) used in radiation therapy practices and researches are introduced. They are:(1) the treatment time calculator, superficialx-ray treatment time calculator(SUPCALC) used in the superficial X-ray radiation therapy;(2) the monitor unit calculator, electron monitor unit calculator(EMUC) used in the electron radiation therapy;(3) the multileaf collimator machine file creator, sliding window intensity modulated radiotherapy(SWIMRT) used in generating fluence map for research and quality assurance in intensity modulated radiation therapy;(4) the treatment planning system, DOSCTP used in the calculation of 3D dose distribution using Monte Carlo simulation; and(5) the monitor unit calculator, photon beam monitor unit calculator(PMUC) used in photon beam radiation therapy. One common issue of these GUIs is that all user-friendly interfaces are linked to complex formulas and algorithms based on various theories, which do not have to be understood and noted by the user. In that case, user only needs to input the required information with help from graphical elements in order to produce desired results. SUPCALC is a superficial radiation treatment time calculator using the GUI technique to provide a convenient way for radiation therapist to calculate the treatment time, and keep a record for the skin cancer patient. EMUC is an electron monitor unit calculator for electron radiation therapy. Instead of doing hand calculation according to pre-determined dosimetric tables, clinical user needs only to input the required drawing of electron field in computer graphical file format, prescription dose, and beam parameters to EMUC to calculate the required monitor unit for the electron beam treatment. EMUC is based on a semi-experimental theory of sector-integration algorithm. SWIMRT is a multileaf collimator machine file creator to generate a fluence map produced by a medical linear accelerator. This machine file controls the multileaf collimator to deliver intensity modulated beams for a specific fluence map used in quality assurance or research. DOSCTP is a treatment planning system using the computed tomography images. Radiation beams(photon or electron) with different energies and field sizes produced by a linear accelerator can be placed in different positions to irradiate the tumour in the patient. DOSCTP is linked to a Monte Carlo simulation engine using the EGSnrc-based code, so that 3D dose distribution canbe determined accurately for radiation therapy. Moreover, DOSCTP can be used for treatment planning of patient or small animal. PMUC is a GUI for calculation of the monitor unit based on the prescription dose of patient in photon beam radiation therapy. The calculation is based on dose corrections in changes of photon beam energy, treatment depth, field size, jaw position, beam axis, treatment distance and beam modifiers. All GUIs mentioned in this review were written either by the Microsoft Visual Basic.net or a MATLAB GUI development tool called GUIDE. In addition, all GUIs were verified and tested using measurements to ensure their accuracies were up to clinical acceptable levels for implementations.

Graphical User Interface for the Monitoring of CAN Frames by Means of a SoC Cyclone V

In this paper, the design of a Graphical User Interface for CAN data frame monitoring is presented. The GUI has been developed in the Qt Creator IDE. A touch screen for visualization and control is used, which in turn is controlled by a development board with a SoC Cyclone V, through which a Linux operating system is executed.

Generating Graphic User Interface of Web Applications Using Source Code Generator Based on Dynamic Frames

This paper deals with a problem of application generation together with their Graphic User Interface （GUI）. Particularly, the source code generator based on dynamic frames was improved for more effective specification of GUI. It＇s too demanding for the developers to have specification of the application that contain all physical coordinates and other details of buttons and other GUI elements. The developed solution for this problem is based on post-processing of generated source code using iterators for specifying coordinates and other values of graphic elements. The paper includes two examples of generating web applications and their GUI.

USER INTERFACE FOR COLOR SELECTION

The user-computer interface for color selection is of great significance for the use of colors in computer graphics, particularly in some fields where the used colors have to be selected carefully. This paper discusses what factors have to be considered to design an effective user interface for color selec- tion. It also presents a method which shows how to represent 3D color spaces according to the psychol- ogy of color perception. Two examples of user interface for color selection are given. One is based on the CLELUV uniform color space, the other is based on RGB-rotated color model.

CARDIOGUI: An Interface Guide to Simulate Cardiovascular Respiratory System during Physical Activity

This paper aims at the presentation of an interface to simulate cardiovascular respiratory system. The authors are interested in the resolution of optimal control problem related to the performance of a 30 years old woman. The results show in the most case the determinant parameters of cardiovascular respiratory system reach the equilibrium value due to its controls that is heart rate and alveolar ventilation.

基于Matlab的超磁致伸缩骨传导振子设计平台研发

针对声学领域中利用稀土超磁致伸缩材料(GMM)设计的微型骨传导振子结构设计计算复杂的问题,提出设计一款稀土超磁致伸缩骨传导振子的结构设计平台。在稀土超磁致伸缩换能器设计理论的基础上,利用Matlab强大的数据处理能力和GUI图形用户界面功能搭建了骨传导振子的设计平台。该平台可以对骨传导振子内部的GMM棒、激励线圈、预压力机构等部件进行设计计算,还可对骨传导振子的性能指标进行检验。该平台操作简单,可根据设计要求进行改变参数,有效地提高了设计效率。

基于手机内置MEMS传感器的行人步数检测方法

手机内置微机电系统(MEMS)传感器具有零偏不稳定性和误差发散快等缺点。为了提高行人步数检测的准确性,基于图形用户界面(GUI),建立零偏校正、低通滤波和卡尔曼(Kalman)滤波3种误差处理模型。采用峰值域和时间域共同约束峰值的双特征检测方法,设计平稳前进和摆臂前进两种动态实验场景,检测行人步数。实验结果表明:在不同动态场景下,双特征检测行人步数的准确率均在95%以上,验证了所提算法的准确性和鲁棒性,满足行人步数检测的要求。

基于ANN的RECFST短柱轴压承载力预测

目的针对相关设计规范和文献在计算圆端形截面钢管混凝土短柱轴压承载力上的局限性,开发高精高效的轴压承载力预测模型。方法首先,基于国内外已有的RECFST短柱轴压试验研究结果建立有限元模型,并通过验证;其次,基于Python脚本批量生成有限元模型,建立涵盖广泛输入参数的数据集;然后,利用数据集开发高精度的ANN模型并与相关规范和文献结果进行比较;最后,基于ANN模型开发GUI图形用户界面工具。结果ANN模型预测值与试验结果之比的平均值N ANN/N u=0.98,模型预测误差远低于相关规范和文献公式预测误差;ANN模型的均方误差K MSE=7.3734×10-7,总数据样本回归值R=0.99963,表明了ANN模型的有效性以及预测结果的精确性。结论ANN模型可以准确预测RECFST短柱的轴压承载力,基于模型开发的GUI工具简便实用。

基于分数阶黏弹性缓冲系统的代理模型可视化研究

分数阶黏弹性缓冲系统模型可以准确描述黏弹性材料的力学性质,被广泛应用于工程车辆的减振控制中。但由于模型本身的复杂度使得在求解及优化过程中消耗大量的时间和计算成本,而代理模型很好地解决这一问题。通过引入图形用户界面(GUI)技术,开发出一种用户友好的复杂分数阶代理模型可视化实验系统,该系统主要包含实验设计模块、代理模型模块和误差分析模块3大模块。使用时根据需求选择不同的分数阶及代理模型,输入变量取值范围信息,即可得到代理模型拟合效果图以及误差,然后对比分析不同代理模型的误差结果,选择拟合效果最好的代理模型。以Maxwell分数阶模型为例,在同等变量选择范围下分析4种代理模型获得的代理效果。结果表明:当施加外力在0~100 N,系统固有频率在0~100 Hz的条件下,决定系数为0.989 7,均方根误差为0.146的混合自适应代理模型为拟合效果最好的代理模型。此系统的开发为代理模型在分数阶黏弹性缓冲系统的计算及优化研究中提供一定的应用价值,解决了复杂分数阶求解计算成本大的问题。

MATLAB软件在铰链四杆机构运动分析中的应用探索

铰链四杆机构可实现多种运动的变换,在仿生机械、智能装备等领域具有广阔的应用前景。针对当前铰链四杆机构可视化分析平台侧重运动线图绘制的局限,探索MATLAB软件图形用户界面App Designer功能在铰链四杆机构运动分析中的应用。通过开发一套多功能铰链四杆机构运动分析平台,研究交互式参数设计与机构运动动态演示的实现方法,实现了四杆机构轨迹特性、急回特性等多项运动性能的定量与定性分析。多项运动性能的分析结果以图形或动画的形式展现,包括连杆曲线的生成过程、极位构型、运动线图等。该平台有助于建立机构设计参数与多项运动特性的关系,明确行程速度变化系数、极位夹角等指标对急回程度的影响,为复杂机械结构的创新设计奠定基础。

基于图形用户界面老年人日常生活活动能力评估系统设计

目的借助MATLAB App Designer软件工具,设计一套简易实用的老年人日常生活活动(ADL)能力评估系统,提高传统评估工作信息化管理水平。方法以Barthel指数分级为核心,通过MATLAB App Designer开发软件设计一款基于图形用户界面的老年人ADL评估系统。结果该系统将用户登录、被评估者信息收集、ADL评估、查询统计四个模块集中在一起,充分满足了老年人ADL评估工作的需要。结论基于图形用户界面的老年人ADL评估系统实现了“人工+纸质调查表”向“软件+系统评估”的方式转变,便于养老机构信息化建设工作的实际应用。

基于MATLAB的《信号与系统》教学辅助系统设计

信号与系统作为电子信息类专业十分重要的专业基础课程,一直以来都具有理论性强、概念抽象、难以理解的特点。MATLAB具有强大的数值计算、可视化功能和系统建模仿真能力,在高校和科研机构应用极为广泛。为提高学生对本门学科的学习兴趣,加深对课程内容的理解掌握,文中从信号与系统教学的需求、基于MATLAB的信号与系统教学分析现状以及二者结合运用下的广大前景出发,重点介绍了利用信号与系统的各重要知识点基本原理,运用MATLAB工具箱函数编程实现了信号与系统重要内容的模拟仿真,并设计了基于MATLAB的GUI教学辅助系统。

GridDroid--An Effective and Efficient Approach for Android Repackaging Detection Based on Runtime Graphical User Interface

Repackaging brings serious threats to Android ecosystem.Software birthmark techniques are typically applied to detect repackaged apps.Birthmarks based on apps'runtime graphical user interfaces(GUI)are effective,especially for obfuscated or encrypted apps.However,existing studies are time-consuming and not suitable for handling apps in large scale.In this paper,we propose an effective yet efficient dynamic GUI birthmark for Android apps.Briefly,we run an app with automatically generated GUI events and dump its layout after each event.We divide each dumped layout into a grid,count in each grid cell the vertices of boundary rectangles corresponding to widgets within the layout,and generate a feature vector to encode the layout.Similar layouts are merged at runtime,and finally we obtain a graph as the birthmark of the app.Given a pair of apps to be compared,we build a weighted bipartite graph from their birthmarks and apply a modified version of the maximum-weight-bipartite-matching algorithm to determine whether they form a repackaging pair(RP)or not.We implement the proposed technique in a prototype,GridDroid,and apply it to detect RPs in three datasets involving 527 apks.GridDroid reports only six false negatives and seven false positives,and it takes GridDroid merely 20 microseconds on average to compare a pair of birthmarks.

图形用户界面自动生成技术的现状与挑战

随着大数据、人工智能等新兴技术的不断发展和应用,算法模型驱动的图形用户界面自动化和智能化趋势正以前所未有的速度改变着传统的依赖人工绘制的图形用户界面设计方式。用户界面自动生成不仅是解决人机交互设备多样化、功能复杂化、需求个性化等挑战的必然选择,也为人机协同的智能用户界面设计提供了新范式。为了进一步拓展开发人员和研究人员对图形用户界面自动生成前沿技术方法和应用案例的理解及应用,阐述了当前人机交互和人工智能交叉领域下的图形用户界面自动生成及智能评估相关技术的现状,分析了目前图形用户界面自动生成的技术路径、算法模型、设计方法以及评估框架,特别介绍了基于人工智能内容生成技术(AIGC)的图形用户界面自动生成技术进展及其对现有用户界面设计范式带来的新挑战,并总结了图形用户界面自动生成技术的发展趋势和机遇。

人机交互嵌入式图形用户界面视觉增强方法研究

人机交互嵌入式图形用户界面容易受到噪声影响,且受传输带宽的限制,处理图像较为复杂,导致视觉增强效果不佳。为此,提出人机交互嵌入式图形用户界面视觉增强方法。利用傅里叶变换方法处理人机交互嵌入式图形用户界面,获得边缘像素集,融合区域特征,分层提取用户界面。采用均值滤波处理方法分析透射率,去模糊处理用户模糊界面。基于此,利用Retinex和小波变换图像增强方法获取去模糊后的视觉图像饱和度,计算亮度分量,增强处理去模糊处理后的视觉图像。由实验结果可知,该方法能够获取清晰用户界面,且噪声振幅在-1.5~0.8 dB范围内波动,说明使用该技术抑噪效果最好。

基于粒子-人工蜂群算法的3RPUP_(c)-UPS并联机构运动学正解研究

针对3RPUP_(c)-UPS并联机构运动学正解求解困难的问题,对新型3RPUPc-UPS并联机构的运动学特性进行了研究,并构建出位置正解求解模型,进而提出了一种基于粒子-人工蜂群算法(P-ABC)的并联机构运动学求解方法。首先,根据机构的拓扑特性,计算得到了方位特征集、自由度和耦合度;然后,根据机构的几何特征,基于姿态变换矩阵和动平台投影方程,建立了机构的运动学逆解方程,并对比了MATLAB和SOLIDWORKDS的仿真结果,验证了逆解分析的正确性;最后,将运动学逆解方程转化为最小化求解问题,构建出了适合优化算法的运动学正解模型,并利用MATLAB的软件交互界面(GUI)功能,开发出用于计算并联机构运动学正解的软件,分别基于粒子群算法(PSO)、人工蜂群算法(ABC)和P-ABC算法,对该并联机构的运动学正解进行了计算。研究结果表明:P-ABC算法单次求解时间在0.5 s内,求解误差级别为10-20,相对于ABC算法,运行时间缩短了50.02%;而相对于POS算法,其求解精度提高了10个数量级。P-ABC算法能够用于求解该并联机构运动学正解,具有计算速度快、精度高的特点,可以为研究并联机构运动学正解提供新方法。

通信原理虚拟仿真实验平台的设计与实现

为提高通信原理课程的学习效果,充分锻炼学生实验动手能力,采用MATLAB GUI开发工具设计一套可视化的虚拟仿真实验平台。该平台可实现模拟调制、数字调制、数字基带传输和模拟信号数字化等功能模块的实验教学,可视化操作界面能提升学生对通信系统的基本原理和模型的理解力,提高学生学习兴趣。该仿真平台使用方便、可靠性强,可作为传统教学的有益补充。

Prediction of corrosion rate for friction stir processed WE43 alloy by combining PSO-based virtual sample generation and machine learning

The corrosion rate is a crucial factor that impacts the longevity of materials in different applications.After undergoing friction stir processing(FSP),the refined grain structure leads to a notable decrease in corrosion rate.However,a better understanding of the correlation between the FSP process parameters and the corrosion rate is still lacking.The current study used machine learning to establish the relationship between the corrosion rate and FSP process parameters(rotational speed,traverse speed,and shoulder diameter)for WE43 alloy.The Taguchi L27 design of experiments was used for the experimental analysis.In addition,synthetic data was generated using particle swarm optimization for virtual sample generation(VSG).The application of VSG has led to an increase in the prediction accuracy of machine learning models.A sensitivity analysis was performed using Shapley Additive Explanations to determine the key factors affecting the corrosion rate.The shoulder diameter had a significant impact in comparison to the traverse speed.A graphical user interface(GUI)has been created to predict the corrosion rate using the identified factors.This study focuses on the WE43 alloy,but its findings can also be used to predict the corrosion rate of other magnesium alloys.

数据非依赖采集张量质谱数据计算平台的开发

数据非依赖采集张量(data independent acquisition tensor,DIAT)是一种质谱数据格式,用于处理和分析数据非依赖采集方法获得的蛋白质组学数据。与传统方法相比,DIAT技术具有便捷的数据可视化处理和高效的深度学习模型训练等优势。但由于目前缺乏支持DIAT格式数据的软件平台,限制了其应用。为解决这一问题,本文基于PyQt框架设计了一款用于处理和分析DIAT数据的软件,涵盖了与DIAT技术相关的所有功能,使用户能够轻松地利用DIAT数据进行复杂分析,降低了使用门槛,为数据非依赖采集(DIA)质谱数据分析注入了活力。