Model

模型
  • 文章类型: Journal Article
    Experimental model of resection craniotomy with subsequent reconstruction of the defect with a polymer implant enables comprehensive assessment of functional and ultrastructural changes during replacement of the damaged tissue. Reconstruction of a skull defect was accompanied by transient motor disturbance in the acute period and did not cause functional disorders and neurological deficits in a delayed period. Histological examination of osteal and brain tissue revealed no pathological reactions that could be associated with the response to the chemical components of the implant.
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  • 文章类型: Journal Article
    UNASSIGNED: Within Australia, some families face challenges in accessing paediatric speech-language pathology services. This research sought to investigate the factors that impact access to paediatric speech-language pathology services within Western Australia.
    UNASSIGNED: Researchers used constructivist grounded theory to investigate the construct of access, as experienced and perceived by service decision-makers, namely caregivers of children with communication needs and speech-language pathologists who provide communication services. Eleven speech-language pathologists and 16 caregivers took part in 32 semi-structured in-depth interviews. Researchers used layers of coding of interviews transcripts and the constant comparative method to investigate data.
    UNASSIGNED: Findings outline the factors that impact access to speech-language pathology services, as organised into the seven categories of the Model of Access to Speech-Language Pathology Services (MASPS). The categories and properties of this model are grounded within experiences and perspectives that participants contributed to the dataset.
    UNASSIGNED: MASPS provides a theoretical structure that has been constructed using inductive and abductive reasoning. This model can be used by service designers and decision-makers to reflect upon and improve experiences of service for a range of consumers. MASPS can also be used as a basis for further investigation into aspects of service access.
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  • 文章类型: Published Erratum
    [This corrects the article DOI: 10.3389/fpubh.2023.1136939.].
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  • 文章类型: English Abstract
    The rising global incidence of cancer makes it the second leading cause of death worldwide. Over the past decades, significant progress has been made in both basic knowledge and the discovery of new therapeutic approaches. However, the complexity of mechanisms related to tumor development requires the use of sophisticated and adapted research tools. Among these, the fruitfly Drosophila melanogaster represents a powerful genetic model with numerous practical and conceptual advantages. Indeed, the conservation of genes implicated in cancer between this insect and mammals places Drosophila as a crucial genetic tool for understanding the fundamental mechanisms governing tumorigenesis and identifying new therapeutic targets. This review aims to describe this original model and demonstrate its relevance for studying cancer biology.
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  • 文章类型: Journal Article
    背景:命名实体识别(NER)是自然语言处理中的一项基本任务。然而,它之前通常是命名实体注释,这带来了一些挑战,尤其是在临床领域。例如,确定实体边界是注释者之间最常见的分歧来源之一,因为诸如是否应该注释修饰语或外围词。如果未解决,这些会导致产生的语料库不一致,然而,另一方面,严格的指导方针或裁决会议可以进一步延长已经缓慢和复杂的过程。
    目的:本研究的目的是通过评估两种新颖的注释方法来解决这些挑战,宽松的跨度和点注释,旨在减轻精确确定实体边界的难度。
    方法:我们通过对日本医学病例报告数据集的注释案例研究来评估其效果。我们比较注释时间,注释者协议,和生成的标签的质量,并评估对在注释的语料库上训练的NER系统的性能的影响。
    结果:我们看到了标签过程效率的显着提高,与传统的边界严格方法相比,整体注释时间减少了25%,注释者协议甚至提高了10%。然而,与传统的注释方法相比,即使是最好的NER模型也表现出一些性能下降。
    结论:我们的发现证明了注释速度和模型性能之间的平衡。尽管忽略边界信息会在一定程度上影响模型性能,这是由显著减少注释者的工作量和显著提高注释过程的速度所抵消的。这些好处可能在各种应用中被证明是有价值的,为开发人员和研究人员提供了一个有吸引力的折衷方案。
    BACKGROUND: Named entity recognition (NER) is a fundamental task in natural language processing. However, it is typically preceded by named entity annotation, which poses several challenges, especially in the clinical domain. For instance, determining entity boundaries is one of the most common sources of disagreements between annotators due to questions such as whether modifiers or peripheral words should be annotated. If unresolved, these can induce inconsistency in the produced corpora, yet, on the other hand, strict guidelines or adjudication sessions can further prolong an already slow and convoluted process.
    OBJECTIVE: The aim of this study is to address these challenges by evaluating 2 novel annotation methodologies, lenient span and point annotation, aiming to mitigate the difficulty of precisely determining entity boundaries.
    METHODS: We evaluate their effects through an annotation case study on a Japanese medical case report data set. We compare annotation time, annotator agreement, and the quality of the produced labeling and assess the impact on the performance of an NER system trained on the annotated corpus.
    RESULTS: We saw significant improvements in the labeling process efficiency, with up to a 25% reduction in overall annotation time and even a 10% improvement in annotator agreement compared to the traditional boundary-strict approach. However, even the best-achieved NER model presented some drop in performance compared to the traditional annotation methodology.
    CONCLUSIONS: Our findings demonstrate a balance between annotation speed and model performance. Although disregarding boundary information affects model performance to some extent, this is counterbalanced by significant reductions in the annotator\'s workload and notable improvements in the speed of the annotation process. These benefits may prove valuable in various applications, offering an attractive compromise for developers and researchers.
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  • 文章类型: Journal Article
    高剪切湿法制粒(HSWG)在片剂生产中的广泛应用主要是因为它在改善流动性方面的优势,粉末处理,进程运行时间,大小分布,防止隔离。在线过程分析技术测量对于捕获详细的粒子动力学和呈现实时数据以揭示HSWG过程的复杂性并最终用于过程控制至关重要。这项研究提供了一个机会,通过测量造粒碗的扭矩和施加在粉末床内新型力探针上的力,来预测颗粒和片剂的特性。发现在线力测量比扭矩测量对造粒过程更敏感。特征力曲线呈现了高剪切湿法制粒的整体指纹,其中颗粒形成的演变可以提高我们对造粒过程的理解。这提供了与颗粒性质有关的丰富信息,确定粘合剂液体的均匀分布,和潜在的造粒终点。使用以表面为中心的表面响应实验设计(DoE),从一系列关键工艺参数的实验高剪切混合器中获得数据。利用进化方程的发现,从DOE矩阵中建立了封闭形式的分析模型。该模型能够仅基于在线数据提供预期片剂拉伸强度的强预测性指示。与其他AI方法(如人工神经网络)相比,使用封闭形式的数学方程具有显着的优势,显著提高了可解释性/可询问性,和最小的推理成本,因此,该模型可用于实时决策和过程控制。准确预测的能力,实时,从上游数据中获得所需片剂拉伸强度所需的压实力具有确保压缩机设置迅速达到并保持在最佳值的潜力,从而最大限度地提高效率和减少浪费。
    High shear wet granulation (HSWG) is widely used in tablet manufacturing mainly because of its advantages in improving flowability, powder handling, process run time, size distribution, and preventing segregation. In line process analytical technology measurements are essential in capturing detailed particle dynamics and presenting real-time data to uncover the complexity of the HSWG process and ultimately for process control. This study presents an opportunity to predict the properties of the granules and tablets through torque measurement of the granulation bowl and the force exerted on a novel force probe within the powder bed. Inline force measurements are found to be more sensitive than torque measurements to the granulation process. The characteristic force profiles present the overall fingerprint of the high shear wet granulation, in which the evolution of the granule formation can improve our understanding of the granulation process. This provides rich information relating to the properties of the granules, identification of the even distribution of the binder liquid, and potential granulation end point. Data were obtained from an experimental high shear mixer across a range of key process parameters using a face-centred surface response design of experiment (DoE). A closed-form analytical model was developed from the DOE matrix using the discovery of evolutionary equations. The model is able to provide a strong predictive indication of the expected tablet tensile strength based only on the data in-line. The use of a closed form mathematical equation carries notable advantages over other AI methodologies such as artificial neural networks, notably improved interpretability/interrogability, and minimal inference costs, thus allowing the model to be used for real-time decision making and process control. The capability of accurately predicting, in real time, the required compaction force required to achieve the desired tablet tensile strength from upstream data carries the potential to ensure compression machine settings rapidly reach and are maintained at optimal values, thus maximising efficiency and minimising waste.
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  • 文章类型: Journal Article
    EUS干预在肝胆胰疾病的治疗中具有越来越重要的作用。然而,程序本身不经常执行,需要专业知识,并且有很高的并发症风险。有了这些限制,动手实践模式对于内镜医师进行EUS干预培训非常重要。EUS干预有各种实践模型,从活体猪模型到全合成模型。尽管生活模型提供了现实的感觉,准备工作很复杂,增加了对人畜共患问题的关注。全合成模型更容易准备和存储,但不现实,仍然需要改进的空间。杂交离体模型是更广泛可用的,并且提供各种训练程序,但仍需要针对猪组织的特殊制备。
    EUS interventions have an increasing role in the treatment for hepatobiliary-pancreatic diseases. However, the procedure itself is not frequently performed, needs expertise, and carries a high risk of complications. With these limitations, the hands-on practice model is very important for the endoscopist in training for EUS intervention. There have been various hands-on models for EUS interventions, ranging from in vivo living pig model to all-synthetic model. Although a living model provides realistic sensation, the preparation is complex and increases concerns for zoonotic issues. All-synthetic models are easier to prepare and store but not realistic and still need the room for improvement. Hybrid ex vivo model is more widely available and provides various training procedures but still needs special preparation for the porcine tissue.
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  • 文章类型: Journal Article
    这篇综述的目的是总结当前宫腔镜训练模型的特点和应用。
    我们对PubMed进行了系统搜索,Embase,和Cochrane图书馆在2024年3月之前发表的合格研究。还进行了参考的手动筛选和引用跟踪。
    报告的宫腔镜训练模型包括虚拟现实模拟器,非生物材料模型,植物组织模型,动物组织模型,和人体组织模型。没有训练模式在现实主义方面明显优越,触觉反馈,操作标准化评分的可用性,准备难度,外科手术的可重用性,和价格。利用任何类型的模型进行宫腔镜模拟培训可以帮助受训者增强相关知识,技能,自信,和舒适,但是虚拟现实模型在训练能力上有优势。
    每种宫腔镜训练模型都有其优缺点。需要适当的培训课程来有效地利用不同模型的优点。需要使用严格设计的研究和标准评估工具来比较各种培训模型的真实性和培训有效性。
    UNASSIGNED: The purpose of this review is to summarize the characteristics and applications of current hysteroscopic training models.
    UNASSIGNED: We conducted a systematic search of PubMed, Embase, and Cochrane Library for eligible studies published before March 2024. Manual screening of references and citation tracking were also performed.
    UNASSIGNED: Reported hysteroscopic training models included virtual reality simulators, non-biological material models, plant tissue models, animal tissue models, and human tissue models. No training model was distinctly superior in terms of realism, haptic feedback, availability of standardized scoring of operations, preparation difficulty, reusability of surgical procedure, and prices. Utilizing any type of models for hysteroscopy simulation training could assist trainees in enhancing relevant knowledge, skills, self-confidence, and comfort, but virtual reality models had an advantage in training capacity.
    UNASSIGNED: Each hysteroscopic training model has its advantages and disadvantages. An appropriate training curriculum is needed to efficiently leverage the merits of different models. The realism and training effectiveness of various training models need to be compared using rigorously designed studies and standard evaluation tools.
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  • 文章类型: Journal Article
    背景:理论,模型和框架(TMF)在实现时很有用,评估和维持医疗保健循证干预措施。然而,为实施项目确定合适的TMF可能具有挑战性。我们开发并测试了在线工具的可用性,以帮助正在进行或支持实施实践活动的个人识别适当的模型和/或框架,以告知他们的工作。
    方法:我们在实施科学和以用户为中心的设计中使用了以模型和证据为指导的方法。工具开发的阶段包括应用对TMF进行范围审查的结果,并与24名研究人员/实施者进行访谈,了解识别和选择TMF的障碍和促进者。根据采访结果,我们按目标对TMF进行了分类,实施阶段,和目标级别的变化,以通知工具的算法。然后,我们对10个最终用户进行了访谈,以测试原型工具的可用性,并管理了系统可用性量表(SUS)。解决了可用性问题并将其纳入该工具。
    结果:我们开发了FindTMF,一个在线工具,由3-4个关于用户实施项目的问题组成。该工具的算法与用户项目的关键特征(目标,舞台,目标更改级别)具有不同TMF的特征,并呈现候选模型/框架列表。来自加拿大或澳大利亚的10个人参加了可用性测试(平均SUS评分84.5,标准差11.4)。总的来说,参与者发现工具很简单,易于使用和视觉上的吸引力与候选模型/框架的有用输出考虑一个实施项目。用户希望获得有关该工具的期望以及如何使用输出表中的信息的其他说明和指导。工具改进包括包含概述工具步骤和输出的概述图,在单个页面上显示工具问题,并阐明结果页面的可用功能,包括添加到词汇表和补充工具的直接链接。
    结论:FindTMF是一种易于使用的在线工具,通过使大量模型和框架更易于访问,可以使支持实施实践活动的个人受益。同时还支持识别和选择相关TMF的一致方法。
    BACKGROUND: Theories, models and frameworks (TMFs) are useful when implementing, evaluating and sustaining healthcare evidence-based interventions. Yet it can be challenging to identify an appropriate TMF for an implementation project. We developed and tested the usability of an online tool to help individuals who are doing or supporting implementation practice activities to identify appropriate models and/or frameworks to inform their work.
    METHODS: We used methods guided by models and evidence on implementation science and user-centered design. Phases of tool development included applying findings from a scoping review of TMFs and interviews with 24 researchers/implementers on barriers and facilitators to identifying and selecting TMFs. Based on interview findings, we categorized the TMFs by aim, stage of implementation, and target level of change to inform the tool\'s algorithm. We then conducted interviews with 10 end-users to test the usability of the prototype tool and administered the System Usability Scale (SUS). Usability issues were addressed and incorporated into the tool.
    RESULTS: We developed Find TMF, an online tool consisting of 3-4 questions about the user\'s implementation project. The tool\'s algorithm matches key characteristics of the user\'s project (aim, stage, target change level) with characteristics of different TMFs and presents a list of candidate models/frameworks. Ten individuals from Canada or Australia participated in usability testing (mean SUS score 84.5, standard deviation 11.4). Overall, participants found the tool to be simple, easy to use and visually appealing with a useful output of candidate models/frameworks to consider for an implementation project. Users wanted additional instruction and guidance on what to expect from the tool and how to use the information in the output table. Tool improvements included incorporating an overview figure outlining the tool steps and output, displaying the tool questions on a single page, and clarifying the available functions of the results page, including adding direct links to the glossary and to complementary tools.
    CONCLUSIONS: Find TMF is an easy-to-use online tool that may benefit individuals who support implementation practice activities by making the vast number of models and frameworks more accessible, while also supporting a consistent approach to identifying and selecting relevant TMFs.
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  • 文章类型: Journal Article
    背景:急诊科拥挤继续威胁患者的安全并导致患者预后不良。先前设计用于预测住院的模型存在偏见。成功估计患者入院概率的预测模型将有助于减少或预防急诊科“登机”和医院“出口障碍”,并通过提前入院和避免旷日持久的床位采购流程来减少急诊科的拥挤。
    目的:通过利用现有的临床描述符,开发一种模型来预测即将从急诊科住院的成年患者在患者就诊早期(即,患者生物标志物)在分诊时常规收集并记录在医院的电子病历中。生物标志物有利于建模,因为它们在分诊时的早期和常规收集;瞬时可用性;标准化定义,测量,和解释;以及他们摆脱患者病史的限制(即,他们不会受到不准确的病史患者报告的影响,不可用的报告,或延迟报告检索)。
    方法:这项回顾性队列研究评估了急诊科成年患者1年的连续数据事件,并开发了一种算法来预测哪些患者需要即将入院。评估了八个预测变量在患者急诊科就诊结果中的作用。采用Logistic回归对研究数据进行建模。
    结果:8预测模型包括以下生物标志物:年龄,收缩压,舒张压,心率,呼吸频率,温度,性别,和敏锐度水平。该模型使用这些生物标志物来识别需要住院的急诊科患者。我们的模型表现很好,观察到的和预测的录取之间有很好的一致性,这表明了一个很好的拟合和校准良好的模型,显示出很好的能力来区分谁会入院和不会入院。
    结论:这个基于主要数据的预测模型确定了急诊科患者入院风险增加。这些可操作的信息可用于改善患者护理和医院运营,特别是通过预测分诊后哪些患者可能入院,从而减少急诊科的拥挤,从而提供所需的信息,以在护理连续体中更早地启动复杂的入院和床位分配过程。
    BACKGROUND: Emergency department crowding continues to threaten patient safety and cause poor patient outcomes. Prior models designed to predict hospital admission have had biases. Predictive models that successfully estimate the probability of patient hospital admission would be useful in reducing or preventing emergency department \"boarding\" and hospital \"exit block\" and would reduce emergency department crowding by initiating earlier hospital admission and avoiding protracted bed procurement processes.
    OBJECTIVE: To develop a model to predict imminent adult patient hospital admission from the emergency department early in the patient visit by utilizing existing clinical descriptors (ie, patient biomarkers) that are routinely collected at triage and captured in the hospital\'s electronic medical records. Biomarkers are advantageous for modeling due to their early and routine collection at triage; instantaneous availability; standardized definition, measurement, and interpretation; and their freedom from the confines of patient histories (ie, they are not affected by inaccurate patient reports on medical history, unavailable reports, or delayed report retrieval).
    METHODS: This retrospective cohort study evaluated 1 year of consecutive data events among adult patients admitted to the emergency department and developed an algorithm that predicted which patients would require imminent hospital admission. Eight predictor variables were evaluated for their roles in the outcome of the patient emergency department visit. Logistic regression was used to model the study data.
    RESULTS: The 8-predictor model included the following biomarkers: age, systolic blood pressure, diastolic blood pressure, heart rate, respiration rate, temperature, gender, and acuity level. The model used these biomarkers to identify emergency department patients who required hospital admission. Our model performed well, with good agreement between observed and predicted admissions, indicating a well-fitting and well-calibrated model that showed good ability to discriminate between patients who would and would not be admitted.
    CONCLUSIONS: This prediction model based on primary data identified emergency department patients with an increased risk of hospital admission. This actionable information can be used to improve patient care and hospital operations, especially by reducing emergency department crowding by looking ahead to predict which patients are likely to be admitted following triage, thereby providing needed information to initiate the complex admission and bed assignment processes much earlier in the care continuum.
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