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  • 文章类型: Journal Article
    背景:可以根据个人达到的飞行时间来分析垂直跳跃。该测量可以使用力平台或三维红外摄像系统获得,但是这种设备价格昂贵,需要进行数据收集和处理培训。因此,这项研究旨在评估使用智能手机和Kinovea软件与力平台作为垂直跳跃分析方法的准确性和可靠性。
    方法:为此,两名独立评估人员通过计算参与者之间的变量,分析了双足和单足垂直跳跃的视频.参与者在双足和单足条件下进行了三连跳,优势和非优势腿。
    结果:发现双足跳跃的评估者内部分析具有出色的可重复性(ICC=0.903至0.934),而对于单足跳跃,重现性中等至优异(ICC=0.713~0.902).评分者间分析表明,对于双足跳跃,重现性相当高(ICC=0.823至0.926),而对于单足跳跃,它是中等的(ICC=0.554至0.702)。
    结论:因此,可以得出结论,可以使用智能手机-Kinovea系统进行垂直跳跃评估。然而,同一评估者应进行评估,以保持可靠的指标。
    BACKGROUND: The vertical jump can be analyzed based on the flight time achieved by the individual. This measurement can be obtained using a force platform or a three-dimensional infrared camera system, but such equipment is expensive and requires training for data collection and processing. Thus, this study aimed to evaluate the accuracy and reliability of using a smartphone and the Kinovea software compared with a force platform as a method of vertical jump analysis.
    METHODS: For this purpose, two independent evaluators analyzed videos of bipodal and unipodal vertical jumps by counting the variables among participants. The participants performed three consecutive jumps in bipodal and unipodal conditions with the dominant and non-dominant legs.
    RESULTS: The intra-rater analysis for bipodal jumps was found to have excellent reproducibility (ICC = 0.903 to 0.934), whereas for unipodal jumps, the reproducibility was moderate to excellent (ICC = 0.713 to 0.902). The inter-rater analysis showed that for bipodal jumps, the reproducibility is substantial to excellent (ICC = 0.823 to 0.926), while for unipodal jumps, it is moderate (ICC = 0.554 to 0.702).
    CONCLUSIONS: Therefore, it can be concluded that the vertical jump evaluation can be performed using the smartphone-Kinovea system. However, the same evaluator should carry out the evaluation to maintain reliable indices.
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  • 文章类型: Review
    背景:在评估环境暴露对人类健康的影响时,研究设计通常包括一系列重复测量。目标是确定随着时间的推移,人群是否具有不同的环境暴露轨迹。纵向混合模型的功率分析需要多个输入,包括临床上的显著差异,标准偏差,和测量的相关性。Further,纵向混合模型的幂率分析方法是复杂的,对于非统计学家来说往往具有挑战性。我们讨论了从文献中提取临床相关输入的方法,并解释如何进行功率分析,以适当地解释纵向重复措施。最后,我们提供仔细的建议,以简洁明了的方式描述复杂的功率分析。
    方法:对于环境暴露对健康结果的纵向研究,我们展示了如何[1]进行与计划的混合模型数据分析相一致的动力分析,[2]收集功率分析所需的输入,和[3]进行重复测量功率分析,具有高度引用,已验证,免费,点击,基于网络的,专门为科学家开发的开源软件平台。
    结果:例如,我们描述了对人体血液中全氟烷基和多氟烷基物质(PFAS)重复测量的拟议研究的功效分析。我们展示了如何调整数据分析和功耗分析计划,以考虑重复测量中的参与者内部相关性。我们说明了如何进行文献综述,以找到功率分析的输入。我们强调需要通过考虑标准偏差和平均值的差异来检查功率值的灵敏度,基于文学的价值观。最后,我们提供了一个示例功率计算和总结清单,用于描述功率和样本大小分析。
    结论:本文为进行和描述环境暴露纵向研究的功率分析提供了详细的路线图。它为那些寻求为赠款应用程序编写功率分析的人提供了模板和清单。
    When evaluating the impact of environmental exposures on human health, study designs often include a series of repeated measurements. The goal is to determine whether populations have different trajectories of the environmental exposure over time. Power analyses for longitudinal mixed models require multiple inputs, including clinically significant differences, standard deviations, and correlations of measurements. Further, methods for power analyses of longitudinal mixed models are complex and often challenging for the non-statistician. We discuss methods for extracting clinically relevant inputs from literature, and explain how to conduct a power analysis that appropriately accounts for longitudinal repeated measures. Finally, we provide careful recommendations for describing complex power analyses in a concise and clear manner.
    For longitudinal studies of health outcomes from environmental exposures, we show how to [1] conduct a power analysis that aligns with the planned mixed model data analysis, [2] gather the inputs required for the power analysis, and [3] conduct repeated measures power analysis with a highly-cited, validated, free, point-and-click, web-based, open source software platform which was developed specifically for scientists.
    As an example, we describe the power analysis for a proposed study of repeated measures of per- and polyfluoroalkyl substances (PFAS) in human blood. We show how to align data analysis and power analysis plan to account for within-participant correlation across repeated measures. We illustrate how to perform a literature review to find inputs for the power analysis. We emphasize the need to examine the sensitivity of the power values by considering standard deviations and differences in means that are smaller and larger than the speculated, literature-based values. Finally, we provide an example power calculation and a summary checklist for describing power and sample size analysis.
    This paper provides a detailed roadmap for conducting and describing power analyses for longitudinal studies of environmental exposures. It provides a template and checklist for those seeking to write power analyses for grant applications.
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  • 文章类型: Journal Article
    考虑到需要对老年人进行日常活动分析,易于使用的开发,需要免费的脑电图(EEG)分析工具,以减少访问该技术的障碍,并增加广泛的新研究人员的进入。
    我们描述了一种用于脑电图分析的新开发的工具集,启用导入,平均,波形显示和等电位头皮形貌,使用编程语言Perl。
    基本处理,包括平均数,显示波形,等电位头皮形貌在当前系统中实施。通过使用电流分析系统和商业软件在结果之间制作差异波形来检查验证。与现有方法的比较:当前的软件工具集由自由软件组成。脚本可以很容易地由任何用户编辑,没有黑匣子。
    当前报告的程序提供了一个易于开始的程序,灵活,可读的,易于修改的EEG分析基本工具集,并有望招募新的EEG研究人员。
    UNASSIGNED: Considering the need for daily activity analysis of older adults, development of easy-to-use, free electroencephalogram (EEG) analysis tools are desired in order to decrease barriers to accessing this technology and increase the entry of a wide range of new researchers.
    UNASSIGNED: We describe a newly developed tool set for EEG analysis, enabling import, average, waveform display and iso-potential scalp topographies, utilizing the programming language Perl.
    UNASSIGNED: The basic processing, including average, display waveforms, and isopotential scalp topography was implemented in the current system. The validation was examined by making difference waveforms between the results using the current analysis system and a commercial software.Comparison with Existing Method(s): The current software tool set consists of free software. The scripts are easily editable by any user and there are no black boxes.
    UNASSIGNED: The currently reported procedures provide an easy-to-begin, flexible, readable, easy-to-modify basic tool set for EEG analysis and is expected to recruit new EEG researchers.
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  • 文章类型: Journal Article
    本技术说明的目的是说明一种简单而经济的术前方法,该方法通过使用3D打印虚拟重建的下颌骨触觉模型在腓骨游离皮瓣(FFF)中预先成形重建钛板。整个过程包括使用免费软件(3Dslicer和ITK-snap)基于CT扫描创建患者下颌骨的3D模型,模拟手术截骨和重建,并打印它作为弯曲重建钛板的指南。使用虚拟立方体(1到3个立方体,根据FFF截骨术的数量)。此虚拟实验室工作使用3DBuilder®(Microsoft,雷德蒙德)软件。该技术允许在骨碎片上获得最佳的平板应用。它有助于重建手术具有良好的功能(使患者回到基于天然上颌骨的最佳牙合)和美学结果。本技术说明介绍了通过免费软件和所有外科医生都可以使用的低成本3D打印机对重建板进行简单经济的术前制造。
    The purpose of this technical note is to illustrate a simple and economical preoperative method for preshaping a reconstructive titanium plate in a fibula free flap (FFF) by using 3D printing of a virtually reconstructed mandible haptic model. The whole process consisted in creating a 3D model of the patient\'s mandible based on a CT-scan using a combination of free software (3Dslicer and ITK-snap), and simulating the surgical osteotomies and reconstruction, and print it as a guide for bending a reconstruction titanium plate. Reconstruction is performed using virtual cubes (1 to 3 cubes, according the number of FFF osteotomies). This virtual lab work is performed using 3D Builder® (Microsoft, Redmond) software. This technique allows obtaining an optimal plate application on the bony fragments. It facilitates reconstructive surgery with good functional (putting the patient back in an optimal dental occlusion based on the native maxilla) and aesthetic results. This technical note presents a simple and economical preoperative fabrication of a reconstructive plate through freeware and a low-cost 3D printer accessible to all surgeons.
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  • 文章类型: Journal Article
    长骨骨干的横截面几何形状(CSG)用于生物人类学,以评估其对生物力学约束的抵抗力,并推断与生活史相关的模式,例如移动性,活动专业化或强度,性二态,体重和比例。首先受技术分析限制,对每骨一个或两个横截面的分析,它已经演变成分析长骨骨干部分全长的横截面。最近,研究人员已经开发了分析工具来绘制整个骨干的皮质厚度,以评估运动特征。然而,对于不熟悉计算机编程的科学家来说,这些分析工具都不容易使用,以及一些统计程序,例如用各种参数映射干骨干厚度的相关系数,尚未提供。因此,我们开发了一个自动化的开源应用程序,以半自动和用户友好的方式呈现这些分析(CSG和皮质厚度)。此应用程序,叫做“Diaphysator”,与另一个免费软件(\"Extractor\",在Dupej等人中提出。(2017)。美国体质人类学杂志,164,868-876)。Diaphysator可以用作在线应用程序(https://diaphysator。shinyapps.io/maps)或作为R统计软件的软件包。随着皮层厚度和平均CSG参数图的平均图,用户可以评估沿骨干长度的每个横截面的两个CSG参数的相关性和部分相关性,和整个骨干的皮质厚度数据点,任何因素,如年龄,性别,身材,和体重。
    The cross-sectional geometry (CSG) of long bone diaphyses is used in bioanthropology to evaluate their resistance to biomechanical constraints and to infer life-history-related patterns such as mobility, activity specialization or intensity, sexual dimorphism, body mass and proportions. First limited by technical analytical constraints to the analysis of one or two cross sections per bone, it has evolved into the analysis of cross sections of the full length of the diaphyseal part of long bones. More recently, researchers have developed analytical tools to map the cortical thickness of entire diaphyses to evaluate locomotor signatures. However, none of these analytical tools are easy to use for scientists who are not familiar with computer programming, and some statistical procedures-such as mapping the correlation coefficients of the diaphyseal thickness with various parameters have yet to be made available. Therefore, we developed an automated and open-source application that renders those analyses (both CSG and cortical thickness) in a semiautomated and user friendly manner. This application, called \"Diaphysator\", is associated with another free software (\"Extractor\", presented in Dupej et al. (2017). American Journal of Physical Anthropology, 164, 868-876). Diaphysator can be used as an online application (https://diaphysator.shinyapps.io/maps) or as a package for R statistical software. Along with the mean maps of cortical thickness and mean CSG parameter graphs, the users can evaluate the correlations and partial correlations of both CSG parameters at every cross section along the diaphyseal length, and cortical thickness data points of the entire diaphysis, with any factor such as age, sex, stature, and body mass.
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  • 文章类型: Journal Article
    质谱(MS)是高通量最有效的技术之一,聚糖结构的高分辨率表征。尽管在过去的几十年中已经开发了许多软件应用程序来解释聚糖结构的MS数据,只有少数能够处理糖组学分析产生的大数据集。此外,这些应用程序利用可能导致冗余聚糖注释的数据库,并且不支持在软件内或第三方应用程序对数据进行后处理。为了满足需求,我们介绍GRITS工具箱,一个免费的,独立于平台的软件应用程序,能够存储和处理糖组学MS数据以及相关的元数据。GRITSToolbox使用集成的聚糖识别模块自动注释MS数据,该模块引用了手动管理的哺乳动物聚糖数据库(随软件提供)或任何用户定义的数据库。提供广泛的显示例程以使用用户的专业知识对数据进行后处理并细化自动注释。该软件还允许并排比较来自不同MS运行或样品的注释,并将注释导出为Excel格式。
    Mass spectrometry (MS) is one of the most effective techniques for high-throughput, high-resolution characterization of glycan structures. Although many software applications have been developed over the last decades for the interpretation of MS data of glycan structures, only a few are capable of dealing with the large data sets produced by glycomics analysis. Furthermore, these applications utilize databases that can lead to redundant glycan annotations and do not support post-processing of the data within the software or by third party applications. To address the needs, we present GRITS Toolbox, a freely-available, platform-independent software application capable of storing and processing glycomics MS data along with associated metadata. GRITS Toolbox automatically annotates MS data using an integrated glycan identification module that references manually curated databases of mammalian glycans (provided with the software) or any user-defined databases. Extensive display routines are provided to post-process the data and refine the automated annotation using expert knowledge of the user. The software also allows side by side comparison of annotations from different MS runs or samples and exporting of annotations into Excel format.
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  • 文章类型: Journal Article
    间歇流动呼吸法广泛用于测量氧气吸收速率,并随后估算水生动物的有氧代谢率。然而,缺乏标准的质量控制软件来检测技术问题,这对进化和保守生理学领域的研究进行比较是一个潜在的障碍。这里,我们引入\'FishResp\',通用R包及其图形实现,用于原始呼吸测量数据的质量控制和过滤。我们的目标是提供一个简单的,跨平台和免费软件,以帮助提高代谢率估计的质量和可比性,以减少水生呼吸测量领域的方法学碎片。FishResp接受来自各种呼吸测量系统的数据,允许用户检测在氧气吸收测量期间可能发生的潜在机械问题(例如,腔室泄漏,水循环不良),并提供六种选项来校正微生物耗氧量的原始数据。该软件根据用户标准对原始数据进行过滤,并对绝对和特定于质量的代谢率进行准确和无偏的估计。使用三头棘刺(Gasterosteusaculeatus)和特立尼达孔雀鱼(Poeciliareticulata)的数据,我们展示了FishResp的优点,强调检测机械问题和校正背景呼吸测量的重要性。
    Intermittent-flow respirometry is widely used to measure oxygen uptake rates and subsequently estimate aerobic metabolic rates of aquatic animals. However, the lack of a standard quality-control software to detect technical problems represents a potential impediment to comparisons across studies in the field of evolutionary and conservation physiology. Here, we introduce \'FishResp\', a versatile R package and its graphical implementation for quality-control and filtering of raw respirometry data. Our goal is to provide a straightforward, cross-platform and free software to help improve the quality and comparability of metabolic rate estimates for reducing methodological fragmentation in the field of aquatic respirometry. FishResp accepts data from various respirometry systems, allows users to detect potential mechanical problems which can occur during oxygen uptake measurements (e.g. chamber leaking, poor water circulation), and offers six options to correct raw data for microbial oxygen consumption. The software performs filtering of raw data based on user criteria, and produces accurate and unbiased estimates of absolute and mass-specific metabolic rates. Using data from three-spined sticklebacks (Gasterosteus aculeatus) and Trinidadian guppies (Poecilia reticulata), we demonstrate the virtues of FishResp, highlighting the importance of detecting mechanical problems and correcting measurements for background respiration.
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  • 文章类型: Journal Article
    Mathematical models developed in predictive microbiology are nowadays an essential tool for food scientists and researchers. However, advanced knowledge of scientific programming and mathematical modelling are often required in order to use them, especially in cases of modelling of dynamic and/or non-linear processes. This may be an obstacle for food scientists without such skills. Scientific software can help making these tools more accessible for scientists lacking a deep mathematical or computing background. Recently, the R package bioinactivation was published, including functions (model fitting and predictions) for modelling microbial inactivation under isothermal or dynamic conditions. It was uploaded to the Comprehensive R Archive Network (CRAN), but users need basic R programming knowledge in order to use it. Therefore, it was accompanied by Bioinactivation SE, a user-friendly web application including selected functions in the software for users without a programming background. In this work, a new web application, Bioinactivation FE, is presented. It is an extension of Bioinactivation SE which includes an interface to every function in the bioinactivation package: model fitting of isothermal and non-isothermal experiments, and generation of survivor curves and prediction intervals. Moreover, it includes several improvements in the user interface based on the users\' feedback. The capabilities of the software are demonstrated through two case studies using data published in the scientific literature. In the first case study, the response of Escherichia coli to isothermal and non-isothermal treatments is compared, illustrating the presence of an induced thermal resistance. In the second, the effect of nanoemulsified d-limonene on the thermal resistance of Salmonella Senftenberg is quantified.
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  • 文章类型: Journal Article
    MRI导航系统的使用确保了TMS的准确瞄准。这个,反过来,结果TMS运动标测成为神经科学和神经外科中常规使用的程序。然而,目前,没有标准化的方法来评估TMS运动映射结果。因此,我们开发了无TMSmap的独立图形界面软件,用于对TMS运动映射结果进行定量分析(http://tmsmap.ru/)。除了标准参数的估计(如皮质肌肉的大小和重心位置),它允许估计皮质表示的体积,皮质表面图的兴奋性轮廓,和皮层表示之间的重叠。软件的输入数据包括线圈位置(或电场最大值)的坐标和每个刺激点的相应响应。TMSmap已开发用于与不同实验干预措施相关的TMS图的通用评估和比较,包括,但不限于纵向,药理学和临床研究(例如,中风恢复)。为了说明TMSmap的使用,我们提供了两名健康受试者和一名慢性中风患者的实际TMS运动映射分析的示例。
    The use of the MRI-navigation system ensures accurate targeting of TMS. This, in turn, results in TMS motor mapping becoming a routinely used procedure in neuroscience and neurosurgery. However, currently, there is no standardized methodology for assessment of TMS motor-mapping results. Therefore, we developed TMSmap-free standalone graphical interface software for the quantitative analysis of the TMS motor mapping results (http://tmsmap.ru/). In addition to the estimation of standard parameters (such as the size of cortical muscle representation and the center of gravity location), it allows estimation of the volume of cortical representations, excitability profile of the cortical surface map, and the overlap between cortical representations. The input data for the software includes the coordinates of the coil position (or electric field maximum) and the corresponding response in each stimulation point. TMSmap has been developed for versatile assessment and comparison of TMS maps relating to different experimental interventions including, but not limited to longitudinal, pharmacological and clinical studies (e.g., stroke recovery). To illustrate the use of TMSmap we provide examples of the actual TMS motor-mapping analysis of two healthy subjects and one chronic stroke patient.
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  • 文章类型: Journal Article
    Most pathological pain conditions in patients and rodent pain models result in marked alterations in mechanosensation and the gold standard way to measure this is by use of von Frey fibers. These graded monofilaments are used to gauge the level of stimulus-evoked sensitivity present in the affected dermal region. One of the most popular methods used to determine von Frey thresholds is the up-down testing paradigm introduced by Dixon for patients in 1980 and by Chapman and colleagues for rodents in 1994. Although the up-down method is very accurate, leading to its widespread use, defining the 50% threshold from primary data is complex and requires a relatively time-consuming analysis step. We developed a computer program, the Up-Down Reader (UDReader), that can locate and recognize handwritten von Frey assessments from a scanned PDF document and translate these measurements into 50% pain thresholds. Automating the process of obtaining the 50% threshold values negates the need for reference tables or Microsoft Excel formulae and eliminates the chance of a manual calculation error. Our simple and straightforward method is designed to save research time while improving data collection accuracy and is freely available at https://sourceforge.net/projects/updownreader/ or in supplementary files attached to this manuscript.
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