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.

图形用户界面(GUI)外观设计专利保护问题研究

【目的】通过对GUI外观设计专利侵权案件的对比分析,找出GUI外观设计专利制度存在的不足,并提出相关完善建议。【方法】通过分析相关案件,梳理司法审判中GUI外观设计专利侵权的侵权判定规则。【结果】由于GUI外观设计的特殊性,可以通过细化侵权判断的主体、简化“产品”对GUI外观设计的限制、引入间接侵权规则等方式扩大对GUI外观设计专利的保护。【结论】随着科技发展,GUI外观设计未来会有更多形式呈现,因此需要在立法及司法中对GUI外观设计保护加以完善。

基于Python的GUI(Tkinter)实例开发

Python作为一种跨平台的计算机程序设计语言,凭借其方便的安装和简洁的语法,被广泛应用于各个领域,且它的Tkinter工具包在可视化界面程序开发中也广受编程者的青睐。利用Python语言和Tkinter工具包设计身份证真伪验证系统,并结合SQLite数据库进行数据操作,理解图形用户界面(Graphical User Interface,GUI)编程的逻辑思路,将代码以可视化的形式呈现,不受编程环境影响,从而实现人机交互。

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.

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.

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.

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.

An Educational GUI-Based Software for Dynamic Analysis of Framed Structural Models

This paper introduces a new version of the open-source educational software, LESM (Linear Elements Structure Model), developed in MATLAB for structural analysis of one-dimensional models such as frames, trusses, and grillages. The updated program includes dynamic analysis, which incorporates inertial and damping effects, time-dependent load conditions, and a transient solver with multiple time integration schemes. The software assumes small displacements and linear-elastic material behavior. The paper briefly explains the theoretical basis for these developments and the reorganization of the source code using Object-Oriented Programming (OOP). The updated Graphical User Interface (GUI) allows interactive use of dynamic analysis features and displays new results such as animations, envelope diagrams of internal forces, phase portraits, and the response of degrees-of-freedom in time and frequency domain. The new version was used in a structural dynamics course, and new assignments were elaborated to improve students’ understanding of the subject.

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。

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。

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。

基于Matlab/GUI的电力电子电路仿真平台构建

基于Matlab的图形用户界面开发工具,构建了一套具有Windows风格的电力电子电路仿真平台;以三相桥式全控整流电路为例,展示了该平台的主要功能和实现方法。用户无需具备专业的Matlab知识,即可利用该平台进行工作原理分析、元器件参数设置、理论工作值计算并将仿真波形图在仿真界面上以人机交互的动态方式进行实时显示等一系列便捷操作。此外,该平台还可供学生进行自主学习、自主创新设计。该平台对于教师开展研究性和讨论式教学,提供开放性实验教学,增进学生对电力电子电路与系统的理解,提高学生自主学习和独立研究的能力有一定的帮助。

基于Matlab/GUI的新型界面开发方式

Matlab/GUI是一种新型的图形用户界面开发方式,特别适合能够熟练运用Matlab语言进行仿真但是对VC界面开发了解不够深入的科技工作者。文章先简单介绍Matlab/GUI的基本特点,然后详细说明了一种在实践工程中得到具体应用的GUI界面,力图说明新型的界面开发方式能够在数据处理特别是信号处理方面优于VC平台,具有强大的发展潜力。

基于Matlab GUI串口通信的实时温度监控系统设计

为提高温度监控系统中数据处理速度和软件开发效率,设计了基于Matlab图形用户界面(GUI)的温度实时监控系统。系统利用Matlab串口工具箱,以Modbus协议为通信协议,通过计算机控制岛电SRS13A型温控器,实现了在金属加热过程中对其表面温度值的实时监控。系统软件界面简洁,操作方便,内存占用小,通过参数配置可实现多种工作方式。实验测试结果表明,系统运行稳定,以1 s的采样间隔和0.1℃的测量精度,快速准确地绘制了系统在不同参数配置下的温度响应曲线。

基于MATLAB的图形用户界面(GUI)设计

MATLAB6.x的GUIDE是专门用于图形用户界面 (GUI)程序设计的快速开发环境。从介绍GUIDE入手 ,结合具体的软件图形界面实例 ,给出了利用GUIDE制作图形用户界面的基本方法。在该例子中 ,利用GUIDE设计的界面不仅可以对输入的数据进行曲线拟合 ,建立数学模型 ,而且还可以通过此模型作进一步的预测和分析 ,界面友好 ,具有开放性 ,方便用户不断地完善和扩充其功能。

基于MATLAB的GUI设计车辆路径问题的仿真优化平台

利用MATLAB中的GUI设计了单车场联合运输车辆路径问题的仿真优化平台,主要解决危险物资的联合运输优化问题。此平台提供输入和输出界面,输入界面设置了可用车辆的车牌号、车辆的百公里油耗、客户的需求和服务优先级等参数,对应的输出界面输出改进的扫描算法和改进的遗传算法优化的配送方案、配送车辆数和配送费用。最后以郑州煤电物资供销有限公司的物资配送为实例进行了仿真优化,结果验证了此平台的实用性。