Computer

计算机
  • 文章类型: Journal Article
    背景:肌肉骨骼疾病(MSD)涉及肌肉,神经,肌腱,接头,软骨,和脊柱椎间盘。这些条件可以由工作环境和执行的工作类型触发,因素,在某些情况下,也会加剧现有的疾病。本系统综述旨在概述不同工作相关活动对肌肉骨骼系统的影响。方法:使用以下国际书目网络数据库对出版物进行全球搜索:PubMed和WebofScience。搜索策略结合了肌肉骨骼疾病和工人的术语。此外,我们进行了一项荟萃分析,以估计医疗行业内MSD的患病率.结果:共鉴定出10,805篇非重复文章,最后,本文综述了32项研究。一旦文献检索完成,职业数字被归类为医疗保健,农业,工业,和计算机行业。在医疗保健领域,腰椎退行性疾病的患病率估计为21%(2547名医生和牙医中有497名)(95%CI,17-26%),而对于手部骨关节炎,37%(1013名牙医中有382名)(95%CI,23-51%)。结论:肌肉骨骼疾病显著损害工人的生活质量,尤其是在医疗保健领域。这些条件也与雇主的高成本有关,比如旷工,失去生产力,以及医疗保健成本的增加,残疾,和工人的补偿。
    Background: Musculoskeletal disorders (MSDs) involve muscles, nerves, tendons, joints, cartilage, and spinal discs. These conditions can be triggered by both the work environment and the type of work performed, factors that, in some cases, can also exacerbate pre-existing conditions. This systematic review aims to provide an overview of the impact that different work-related activities have on the musculoskeletal system. Methods: A global search of publications was conducted using the following international bibliographic web databases: PubMed and Web of Science. The search strategies combined terms for musculoskeletal disorders and workers. In addition, a meta-analysis was conducted to estimate the prevalence of MSDs within the healthcare sector. Results: A total of 10,805 non-duplicated articles were identified, and finally, 32 studies were reviewed in this article. Once the literature search was completed, occupational figures were categorized into healthcare, farming, industrial, and computer sectors. In the healthcare sector, the prevalence estimate for degenerative diseases of the lumbar spine was 21% (497 out of 2547 physicians and dentists) (95% CI, 17-26%), while for osteoarthritis of the hand, it was 37% (382 out of 1013 dentists) (95% CI, 23-51%). Conclusions: Musculoskeletal disorders significantly impair workers\' quality of life, especially in healthcare sector. These conditions are also associated with high costs for employers, such as absenteeism, lost productivity, and increased costs for healthcare, disability, and workers\' compensation.
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  • 文章类型: Journal Article
    UNASSIGNED: To develop a natural language processing application capable of automatically identifying benign gallbladder diseases that require surgery, from radiology reports.
    UNASSIGNED: We developed a text classifier to classify reports as describing benign diseases of the gallbladder that do or do not require surgery. We randomly selected 1,200 reports describing the gallbladder from our database, including different modalities. Four radiologists classified the reports as describing benign disease that should or should not be treated surgically. Two deep learning architectures were trained for classification: a convolutional neural network (CNN) and a bidirectional long short-term memory (BiLSTM) network. In order to represent words in vector form, the models included a Word2Vec representation, with dimensions of 300 or 1,000. The models were trained and evaluated by dividing the dataset into training, validation, and subsets (80/10/10).
    UNASSIGNED: The CNN and BiLSTM performed well in both dimensional spaces. For the 300- and 1,000-dimensional spaces, respectively, the F1-scores were 0.95945 and 0.95302 for the CNN model, compared with 0.96732 and 0.96732 for the BiLSTM model.
    UNASSIGNED: Our models achieved high performance, regardless of the architecture and dimensional space employed.
    UNASSIGNED: Desenvolver uma aplicação de processamento de linguagem natural capaz de identificar automaticamente doenças cirúrgicas benignas da vesícula biliar a partir de laudos radiológicos.
    UNASSIGNED: Desenvolvemos um classificador de texto para classificar laudos como contendo ou não doenças cirúrgicas benignas da vesícula biliar. Selecionamos aleatoriamente 1.200 laudos com descrição da vesícula biliar de nosso banco de dados, incluindo diferentes modalidades. Quatro radiologistas classificaram os laudos como doença benigna cirúrgica ou não. Duas arquiteturas de aprendizagem profunda foram treinadas para a classificação: a rede neural convolucional (convolutional neural network - CNN) e a memória longa de curto prazo bidirecional (bidirectional long short-term memory - BiLSTM). Para representar palavras de forma vetorial, os modelos incluíram uma representação Word2Vec, com dimensões variando de 300 a 1000. Os modelos foram treinados e avaliados por meio da divisão do conjunto de dados entre treinamento, validação e teste (80/10/10).
    UNASSIGNED: CNN e BiLSTM tiveram bom desempenho em ambos os espaços dimensionais. Relatamos para 300 e 1000 dimensões, respectivamente, as pontuações F1 de 0,95945 e 0,95302 para o modelo CNN e de 0,96732 e 0,96732 para a BiLSTM.
    UNASSIGNED: Nossos modelos alcançaram alto desempenho, independentemente de diferentes arquiteturas e espaços dimensionais.
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  • 文章类型: Journal Article
    美国验光协会定义了计算机视觉综合症(CVS),也被称为数字眼疲劳,作为一组与眼睛和视觉相关的问题,这些问题是由于长时间的计算机导致的,平板电脑,电子阅读器和手机使用\“。我们的目标是创建一个结构良好的,有效,和可靠的问卷来确定CVS的患病率,并分析视觉,眼表,使用新颖而聪明的自我评估问卷进行CVS和眼外后遗症。
    这个多中心,观察,横截面,描述性,描述性基于调查的,在线研究包括来自15所大学的6853名医学生的完整在线回答。所有参与者都对更新做出了回应,在线,CVS问卷的第四版(CVS-F4),具有较高的效度和可靠性。根据源自CVS-F4的五个基本诊断标准(5DC)诊断CVS。符合5DC的受访者被认为是CVS病例。然后将5DC转换为新颖的五个问题的自我评估问卷,称为CVS-Smart。
    在10000名被邀请的医学生中,8006对CVS-F4调查做出了回应(80%的回应率),8006名受访者中有6853人提供了完整的在线回复(完成率为85.6%)。研究受访者的CVS总体患病率为58.78%(n=4028);女性(65.87%)的CVS患病率高于男性(48.06%)。在CVS组中,最常见的视觉,眼表,眼外症状是眼睛疲劳,干眼症,和颈/肩/背痛74.50%(n=3001),58.27%(n=2347),和80.52%(n=3244)的CVS病例,分别。值得注意的是,75.92%(3058/4028)的CVS病例参与了强制计算机系统使用计划。多因素logistic回归分析显示,5DC的两个最具统计学意义的诊断标准是过去12个月内每月≥2次症状/发作(比值比[OR]=204177.2;P<0.0001)和与屏幕使用相关的症状/发作(OR=16047.34;P<0.0001)。CVS-Smart证明了Cronbach的α可靠性系数为0.860,Guttman分半系数为0.805,具有完善的内容和构造效度。CVS-Smart评分为7-10分表明存在CVS。
    视觉,眼表,CVS的眼外诊断标准构成了CVS-Smart的基本组成部分。CVS-Smart是一部小说,有效,可靠,用于确定CVS诊断和患病率的主观工具,可能为快速定期评估和预测提供工具。具有积极CVS-Smart结果的个人应考虑改变他们的生活方式和屏幕风格,并寻求眼科医生和/或验光师的帮助。较高的机构当局应考虑修订《授权计算机系统使用计划》,以避免CVS在大学生中的长期后果。进一步的研究必须将CVS-Smart与CVS的其他可用指标进行比较,比如CVS问卷,确定其测试-重测可靠性,并证明其广泛使用的合理性。
    UNASSIGNED: The American Optometric Association defines computer vision syndrome (CVS), also known as digital eye strain, as \"a group of eye- and vision-related problems that result from prolonged computer, tablet, e-reader and cell phone use\". We aimed to create a well-structured, valid, and reliable questionnaire to determine the prevalence of CVS, and to analyze the visual, ocular surface, and extraocular sequelae of CVS using a novel and smart self-assessment questionnaire.
    UNASSIGNED: This multicenter, observational, cross-sectional, descriptive, survey-based, online study included 6853 complete online responses of medical students from 15 universities. All participants responded to the updated, online, fourth version of the CVS questionnaire (CVS-F4), which has high validity and reliability. CVS was diagnosed according to five basic diagnostic criteria (5DC) derived from the CVS-F4. Respondents who fulfilled the 5DC were considered CVS cases. The 5DC were then converted into a novel five-question self-assessment questionnaire designated as the CVS-Smart.
    UNASSIGNED: Of 10 000 invited medical students, 8006 responded to the CVS-F4 survey (80% response rate), while 6853 of the 8006 respondents provided complete online responses (85.6% completion rate). The overall CVS prevalence was 58.78% (n = 4028) among the study respondents; CVS prevalence was higher among women (65.87%) than among men (48.06%). Within the CVS group, the most common visual, ocular surface, and extraocular complaints were eye strain, dry eye, and neck/shoulder/back pain in 74.50% (n = 3001), 58.27% (n = 2347), and 80.52% (n = 3244) of CVS cases, respectively. Notably, 75.92% (3058/4028) of CVS cases were involved in the Mandated Computer System Use Program. Multivariate logistic regression analysis revealed that the two most statistically significant diagnostic criteria of the 5DC were ≥2 symptoms/attacks per month over the last 12 months (odds ratio [OR] = 204177.2; P <0.0001) and symptoms/attacks associated with screen use (OR = 16047.34; P <0.0001). The CVS-Smart demonstrated a Cronbach\'s alpha reliability coefficient of 0.860, Guttman split-half coefficient of 0.805, with perfect content and construct validity. A CVS-Smart score of 7-10 points indicated the presence of CVS.
    UNASSIGNED: The visual, ocular surface, and extraocular diagnostic criteria for CVS constituted the basic components of CVS-Smart. CVS-Smart is a novel, valid, reliable, subjective instrument for determining CVS diagnosis and prevalence and may provide a tool for rapid periodic assessment and prognostication. Individuals with positive CVS-Smart results should consider modifying their lifestyles and screen styles and seeking the help of ophthalmologists and/or optometrists. Higher institutional authorities should consider revising the Mandated Computer System Use Program to avoid the long-term consequences of CVS among university students. Further research must compare CVS-Smart with other available metrics for CVS, such as the CVS questionnaire, to determine its test-retest reliability and to justify its widespread use.
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  • 文章类型: Journal Article
    目的:提出一种卷积神经网络(EmbNet),用于在计算机断层扫描肺动脉造影(CTPA)扫描上自动检测肺栓塞,并评估其诊断性能。
    方法:本研究纳入了2019年1月至2021年12月之间的305次连续CTPA扫描(142次用于培训,163用于内部验证),来自公共数据集的250次CTPA扫描用于外部验证。该框架包括用于分割肺血管的预处理步骤和用于检测栓子的EmbNet。栓子分为三个基于位置的亚组进行详细评估:中央动脉,叶分支,和外围区域。真相是由三名放射科医生建立的。
    结果:EmbNet的每扫描电平灵敏度,特异性,阳性预测值(PPV),阴性预测值为90.9%,75.4%,48.4%,和97.0%(内部验证)和88.0%,70.5%,42.7%,和95.9%(外部验证)。在每个栓子水平上,EmbNet的总体灵敏度和PPV分别为86.0%和61.3%(内部验证),83.5%和57.5%(外部验证)。中心栓塞的敏感性和PPV分别为89.7%和52.0%(内部验证),和94.4%和43.0%(外部验证);叶栓子分别为95.2%和76.9%(内部验证),和93.5%和72.5%(外部验证);和周围栓塞的82.6%和61.7%(内部验证),80.2%和59.4%(外部验证)。平均假阳性率为0.45假栓塞/扫描(内部验证)和0.69假栓塞/扫描(外部验证)。
    结论:EmbNet在栓子位置提供了高灵敏度,提示其在临床实践中初步筛查的潜在效用。
    OBJECTIVE: To propose a convolutional neural network (EmbNet) for automatic pulmonary embolism detection on computed tomography pulmonary angiogram (CTPA) scans and to assess its diagnostic performance.
    METHODS: 305 consecutive CTPA scans between January 2019 and December 2021 were enrolled in this study (142 for training, 163 for internal validation), and 250 CTPA scans from a public dataset were used for external validation. The framework comprised a preprocessing step to segment the pulmonary vessels and the EmbNet to detect emboli. Emboli were divided into three location-based subgroups for detailed evaluation: central arteries, lobar branches, and peripheral regions. Ground truth was established by three radiologists.
    RESULTS: The EmbNet\'s per-scan level sensitivity, specificity, positive predictive value (PPV), and negative predictive value were 90.9%, 75.4%, 48.4%, and 97.0% (internal validation) and 88.0%, 70.5%, 42.7%, and 95.9% (external validation). At the per-embolus level, the overall sensitivity and PPV of the EmbNet were 86.0% and 61.3% (internal validation), and 83.5% and 57.5% (external validation). The sensitivity and PPV of central emboli were 89.7% and 52.0% (internal validation), and 94.4% and 43.0% (external validation); of lobar emboli were 95.2% and 76.9% (internal validation), and 93.5% and 72.5% (external validation); and of peripheral emboli were 82.6% and 61.7% (internal validation), and 80.2% and 59.4% (external validation). The average false positive rate was 0.45 false emboli per scan (internal validation) and 0.69 false emboli per scan (external validation).
    CONCLUSIONS: The EmbNet provides high sensitivity across embolus locations, suggesting its potential utility for initial screening in clinical practice.
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  • 文章类型: Journal Article
    背景:ICU再入院和出院后死亡率构成重大挑战。以前的研究使用EHR和机器学习模型,但主要集中在结构化数据上。护理记录包含关键的非结构化信息,但是它们的使用具有挑战性。自然语言处理(NLP)可以从临床文本中提取结构化特征。这项研究提出了关键护理描述提取器(CNDE)来预测ICU出院后的死亡率,并通过分析电子护理记录来识别计划外再入院的高风险患者。
    目的:开发了一种能够感知护理记录的深度神经网络(NurnaNet),结合生物临床医学预训练语言模型(BioClinicalBERT)分析MIMICIII数据集中的电子健康记录(EHR),以预测患者在6个月和2年内的死亡风险.
    方法:采用队列和系统开发设计。
    方法:基于从MIMIC-III中提取的数据,在2001年至2012年美国危重病数据库中,对结果进行了分析.
    方法:我们使用MIMIC数据集的入院时间和出生日期信息计算患者年龄。18岁以下或89岁以上的患者,或是死在医院的人,被排除在外。我们分析了ICU住院患者的16,973份护理记录。
    方法:我们开发了一种称为关键护理描述提取器(CNDE)的技术,从文本中提取关键内容。我们使用对数似然比来提取关键词并结合BioClinicalBERT。我们预测出院患者六个月和两年后的生存率,并使用精度评估模型的性能,召回,F1得分,接收器工作特性曲线(ROC曲线),曲线下面积(AUC),和精度-召回曲线(PR曲线)。
    结果:研究结果表明,NurnaNet在六个月和两年内获得了良好的F1得分(0.67030,0.70874)。与单独使用BioClinicalBERT相比,六个月和两年内的预测表现分别提高了2.05%和1.08%,分别。
    结论:CNDE可以有效减少长格式记录并提取关键内容。NurnaNet在分析护理记录数据方面具有良好的F1评分,这有助于识别患者出院后的死亡风险,并尽快调整相关医疗的定期随访和治疗计划。
    BACKGROUND: ICU readmissions and post-discharge mortality pose significant challenges. Previous studies used EHRs and machine learning models, but mostly focused on structured data. Nursing records contain crucial unstructured information, but their utilization is challenging. Natural language processing (NLP) can extract structured features from clinical text. This study proposes the Crucial Nursing Description Extractor (CNDE) to predict post-ICU discharge mortality rates and identify high-risk patients for unplanned readmission by analyzing electronic nursing records.
    OBJECTIVE: Developed a deep neural network (NurnaNet) with the ability to perceive nursing records, combined with a bio-clinical medicine pre-trained language model (BioClinicalBERT) to analyze the electronic health records (EHRs) in the MIMIC III dataset to predict the death of patients within six month and two year risk.
    METHODS: A cohort and system development design was used.
    METHODS: Based on data extracted from MIMIC-III, a database of critically ill in the US between 2001 and 2012, the results were analyzed.
    METHODS: We calculated patients\' age using admission time and date of birth information from the MIMIC dataset. Patients under 18 or over 89 years old, or who died in the hospital, were excluded. We analyzed 16,973 nursing records from patients\' ICU stays.
    METHODS: We have developed a technology called the Crucial Nursing Description Extractor (CNDE), which extracts key content from text. We use the logarithmic likelihood ratio to extract keywords and combine BioClinicalBERT. We predict the survival of discharged patients after six months and two years and evaluate the performance of the model using precision, recall, the F1-score, the receiver operating characteristic curve (ROC curve), the area under the curve (AUC), and the precision-recall curve (PR curve).
    RESULTS: The research findings indicate that NurnaNet achieved good F1-scores (0.67030, 0.70874) within six months and two years. Compared to using BioClinicalBERT alone, there was an improvement in performance of 2.05 % and 1.08 % for predictions within six months and two years, respectively.
    CONCLUSIONS: CNDE can effectively reduce long-form records and extract key content. NurnaNet has a good F1-score in analyzing the data of nursing records, which helps to identify the risk of death of patients after leaving the hospital and adjust the regular follow-up and treatment plan of relevant medical care as soon as possible.
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  • 文章类型: Journal Article
    目的是研究累积负荷和软骨周转生物标志物与膝骨关节炎软骨2年变化的关系。从Kellgren-Lawrence(KL)1至3级的参与者中,根据24个月(基线)和48个月的磁共振图像计算软骨厚度和横向弛豫时间(T2)。累积负荷是老年人身体活动量表(PASE)和体重指数(BMI)的交互项。在基线时收集血清软骨寡聚基质蛋白(COMP)和II型胶原的硝化形式(Coll2-1NO2)。多元回归(针对基线年龄进行了调整,KL级,软骨措施,疼痛,合并症)评估了累积负荷和生物标志物与2年变化的关系。在406名参与者(63.7(8.7)年)中,生物标志物与累积负荷的相互作用弱预测了2年软骨变化:(i)COMP×累积负荷解释了胫骨内侧厚度变化(R2增加了0.062至0.087,p<0.001);(ii)Coll2-1NO2×累积负荷解释了股骨中央T2变化(R2增加了0.177至0.210,p<0.001);(iii)Coll2-1NO2×累积负荷解释了胫骨外侧T2变化(0.001,基线时的中度COMP或Coll2-1NO2表现出保护性。高COMP或Coll2-1NO2,特别是高BMI和低PASE,与软骨恶化有关。软骨更新生物标志物的中等血清浓度,在高和低体力活动中,与维持2年以上的软骨结果相关。总之,高浓度的软骨周转生物标志物,特别是高BMI和低体力活动,与2年内膝关节软骨变薄和T2增加有关。要点•与质量较差的软骨相比,质量较高的软骨能够更好地耐受较大的累积负荷。•参加骨关节炎倡议生物标志物联盟项目的参与者中,累积负荷暴露及其与软骨周转生物标志物的相互作用与膝关节软骨的2年变化弱相关.•这些发现表明软骨更新是改变膝关节OA中负荷暴露与软骨损失之间关系的因素。
    The purpose was to investigate relationships of cumulative load and cartilage turnover biomarkers with 2-year changes in cartilage in knee osteoarthritis. From participants with Kellgren-Lawrence (KL) grades of 1 to 3, cartilage thickness and transverse relaxation time (T2) were computed from 24-month (baseline) and 48-month magnetic resonance images. Cumulative load was the interaction term of the Physical Activity Scale for the Elderly (PASE) and body mass index (BMI). Serum cartilage oligomeric matrix protein (COMP) and the nitrated form of type II collagen (Coll2-1 NO2) were collected at baseline. Multiple regressions (adjusted for baseline age, KL grade, cartilage measures, pain, comorbidity) evaluated the relationships of cumulative load and biomarkers with 2-year changes. In 406 participants (63.7 (8.7) years), interactions of biomarkers with cumulative load weakly predicted 2-year cartilage changes: (i) COMP × cumulative load explained medial tibia thickness change (R2 increased 0.062 to 0.087, p < 0.001); (ii) Coll2-1 NO2 × cumulative load explained central medial femoral T2 change (R2 increased 0.177 to 0.210, p < 0.001); and (iii) Coll2-1 NO2 × cumulative load explained lateral tibia T2 change (R2 increased 0.166 to 0.188, p < 0.001). Moderate COMP or Coll2-1 NO2 at baseline appeared protective. High COMP or Coll2-1 NO2, particularly with high BMI and low PASE, associated with worsening cartilage. Moderate serum concentrations of cartilage turnover biomarkers, at high and low physical activity, associated with maintained cartilage outcomes over 2 years. In conclusion, high concentrations of cartilage turnover biomarkers, particularly with high BMI and low physical activity, associated with knee cartilage thinning and increasing T2 over 2 years. Key Points • Higher quality cartilage may be better able to tolerate a larger cumulative load than poor quality cartilage. • Among participants enrolled in the Osteoarthritis Initiative Biomarkers Consortium Project, a representation of cumulative load exposure and its interaction with cartilage turnover biomarkers were weakly related with 2-year change in knee cartilage. • These findings suggest that cartilage turnover is a factor that modifies the relationship between loading exposure and cartilage loss in knee OA.
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  • 文章类型: Journal Article
    圆锥角膜(KC)的诊断方法和手术技术的进步增加了非侵入性治疗选择。KC的成功手术计划涉及临床科学的结合,经验证据,和外科专业知识。评估疾病进展至关重要,如果进展是渐进的,那么停止进展应该是重点。虽然外科医生过去仅仅依靠经验来决定手术方法,比较主要因素的网络,比如视力,跨研究可以帮助他们为每位患者选择最合适的治疗方法并达到最佳效果。细致的制表方法便于解释,强调根据每个患者的病情和疾病阶段选择正确的手术和康复方法的重要性。我们详细介绍了一项综合网络荟萃分析的结果,比较了在疾病的相同阶段,各种联合治疗性屈光治疗对KC的有效性。跨越四个不同的随访间隔。此外,综合分析表明,对于具有最佳矫正视力(BCVA)的角膜,如果疾病分期不超过3期,则将有晶状体眼人工晶状体与角膜内环形节段(ICRS)和角膜交联(CXL)相结合可提供最佳治疗方法.对于不规则角膜,尽管最初的随访显示BCVA与表面烧蚀有显著差异,长期随访建议将表面消融与ICRS和CXL相结合,尤其是在更高的阶段。
    Advancements in diagnostic methods and surgical techniques for keratoconus (KC) have increased non-invasive treatment options. Successful surgical planning for KC involves a combination of clinical science, empirical evidence, and surgical expertise. Assessment of disease progression is crucial, and halting the progression should be the focus if it is progressive. While surgeons used to rely on experience alone to decide the surgical method, comparing the network of primary factors, such as visual acuity, across studies can help them choose the most appropriate treatments for each patient and achieve optimal outcomes. Meticulous tabulation methods facilitate interpretation, highlighting the importance of selecting the correct surgical and rehabilitation approach based on each patient\'s condition and stage of the disease. We detail the outcomes of a comprehensive network meta-analysis comparing the effectiveness of various combined therapeutic refractive treatments for KC at identical stages of the disease, spanning 4 distinct follow-up intervals. Additionally, the comprehensive analysis suggests that for corneas with optimal best corrected visual acuity (BCVA) preoperatively (classified as regular), combining phakic intraocular lenses with intracorneal ring segments (ICRS) and corneal cross-linking (CXL) could offer the best therapeutic approach provided the disease stage does not exceed stage 3. For irregular corneas, although initial follow-ups show a significant difference in BCVA with surface ablation, longer-term follow-ups recommend combining surface ablation with ICRS and CXL, especially at higher stages.
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  • 文章类型: Journal Article
    本文研究了增强现实(AR)技术在大学生英语翻译教学中的融入,强调创新教学方法在提高学生翻译技能和学习经验方面的关键作用。为解决英语翻译教学兴趣不足的问题,本文通过问卷调查初步评估了学习英语翻译的目的和意义,阐明英语习得中遇到的挑战。随后,坚持AR原则,构思并开发了一个植根于AR技术的教学演示平台,与英语翻译教学错综复杂。该平台可以解决英语学习中的问题,如课程理解不足,教学资源利用率低,和教练缺乏经验。这项研究最终导致对调查结果的分析,其中研究了利用研究平台的学生与接受传统教学方法的学生之间翻译能力的定量差异。研究结果强调了基于AR的研究平台对提高学生翻译水平的积极影响。AR平台提高了学习者在学习过程中的参与度,有助于构建一个强大的知识框架,并提高整体学习成果。该平台为教育工作者提供了优化实验课程和提高教学标准的机会。论文的结果为学习者提供了新的教学场景,提出其他技术学科的技术方案,为新一代实验演示平台提供理论基础和应用模型。
    This paper investigates the integration of augmented reality (AR) technology into English translation teaching for college students, emphasizing the pivotal role of innovative teaching methods in enhancing students\' translation skills and learning experiences. To address the issue of insufficient interest in English translation teaching, the paper initially assesses the purpose and significance of learning English translation through a questionnaire survey, elucidating challenges encountered in English language acquisition. Subsequently, adhering to AR principles, a teaching demonstration platform rooted in AR technology is conceived and developed, intricately aligned with English translation instruction. The platform serves as a solution to issues in English learning, such as inadequate course comprehension, low utilization of teaching resources, and instructors\' lack of experience. The research culminates in the analysis of survey results, wherein the quantitative disparities in translation ability between students utilizing the research platform and those subjected to traditional teaching methods are examined. The findings underscore the positive impact of the AR-based research platform on improving students\' translation proficiency. The AR platform heightens learners\' engagement in the learning process, contributes to constructing a robust knowledge framework, and enhances overall learning outcomes. The platform offers educators opportunities to optimize experimental courses and elevate teaching standards. The paper\'s outcomes present novel pedagogical scenarios for learners, propose technical solutions for other technical disciplines and furnish a theoretical foundation and application model for a new generation of experimental demonstration platforms.
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  • 文章类型: Journal Article
    研究表明,数字鸿沟影响学生的教育成就跨种族和族裔群体。鉴于此,该研究调查了在COVID-19大流行期间,在美国家庭脉搏调查(HPS)中,家庭技术接入对学生学习时间的影响,由美国人口普查局进行,并于2020年8月19日至2021年3月29日管理,用于分析。我们使用主成分分析(PCA)计算技术访问的综合指数。对于经验模型,这项研究采用了Tobit回归模型。结果表明,基于PCA的全样本技术访问估计指数约为0.92,表明访问水平较高。然而,按种族/民族划分的数据显示,代表白人的学生平均约为0.93、0.89、0.90、0.94和0.89,黑色,西班牙裔,亚洲,和其他种族,分别。这意味着样本中的家庭获得技术的强度在亚洲和白人学生中更高,其次是西班牙裔,黑色,和其他种族的顺序。基于Tobit回归模型的技术获取对COVID-19期间学生学习时间的估计影响显示,整个样本增加了约3.1个单位点。进一步的分析揭示了使用该技术会影响种族和种族群体学习时间的差异。例如,我们发现,在怀特中,获得技术显著增加了约3.5、1.6、2.2和3.4个单位点的学习时间,黑色,西班牙裔,亚洲学生,分别。所观察到的获取技术对学习时间的不同影响进一步凸显了美国社会数字鸿沟中的种族差异,这揭示了在COVID-19大流行期间,获得技术如何对学生的学习时间产生不成比例的影响。
    Studies have shown that the digital divide affects students\' educational achievement across racial and ethnic groups. In light of this, the study investigates the effect of technology access at home on student learning hours during the COVID-19 pandemic and across racial and ethnic groups in the U.S. The Household Pulse Surveys (HPS), conducted by the United States Census Bureau and administered from August 19, 2020, to March 29, 2021, were used for the analysis. We compute a composite index of technology access using the principal component analysis (PCA). And for the empirical model, the study employed a Tobit regression model. The result shows that the estimated index of technology access based on PCA for the whole sample is about 0.92, indicating a higher level of access. However, the breakdown by race/ethnicity shows an average of about 0.93, 0.89, 0.90, 0.94, and 0.89 for students representing White, Black, Hispanic, Asia, and other races, respectively. This means the intensity at which households in the sample have access to technology is higher among the Asian and White students, followed by Hispanic, Black, and other races in that order. The estimated effect of technology access on the student learning hours during COVID-19 based on the Tobit regression model shows about a 3.1 unit points increase over the whole sample. And further analysis reveals variation at which access to the technology impacts learning hours across race and ethnicity groups. For example, we find that access to technology significantly increased learning hours by about 3.5, 1.6, 2.2, and 3.4 unit points among White, Black, Hispanic, and Asian students, respectively. The observed differing effect of access to technology on learning hours further highlights the racial disparities in American society\'s digital divide, which reveal how access to technology disproportionately impacts student learning hours during the COVID-19 pandemic across race and ethnicity.
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  • 文章类型: Journal Article
    2019年冠状病毒病(COVID-19)大流行继续对公共卫生部门构成重大挑战,包括阿拉伯联合酋长国(UAE)。这项研究的目的是评估各种深度学习模型在预测阿联酋境内COVID-19病例中的效率和准确性。从而帮助国家的公共卫生当局在知情的决策。
    这项研究利用了一个全面的数据集,包括确诊的COVID-19病例,人口统计,和社会经济指标。几种先进的深度学习模型,包括长短期记忆(LSTM),双向LSTM,卷积神经网络(CNN)CNN-LSTM,多层感知器,和递归神经网络(RNN)模型,进行了培训和评估。还实施了贝叶斯优化来微调这些模型。
    评估框架显示,每个模型都表现出不同的预测准确性和精度水平。具体来说,即使没有优化,RNN模型也优于其他架构。进行了全面的预测和透视分析,以仔细检查COVID-19数据集。
    这项研究通过提供重要见解,使阿联酋的公共卫生当局能够部署有针对性的数据驱动的干预措施,从而超越了学术界限。RNN模型,这被认为是最可靠和准确的具体背景,可以显著影响公共卫生决策。此外,这项研究的更广泛意义验证了深度学习技术处理复杂数据集的能力,从而为公共卫生和医疗保健部门的预测准确性提供了变革性的潜力。
    BACKGROUND: The coronavirus disease 2019 (COVID-19) pandemic continues to pose significant challenges to the public health sector, including that of the United Arab Emirates (UAE). The objective of this study was to assess the efficiency and accuracy of various deep-learning models in forecasting COVID-19 cases within the UAE, thereby aiding the nation\'s public health authorities in informed decision-making.
    METHODS: This study utilized a comprehensive dataset encompassing confirmed COVID-19 cases, demographic statistics, and socioeconomic indicators. Several advanced deep learning models, including long short-term memory (LSTM), bidirectional LSTM, convolutional neural network (CNN), CNN-LSTM, multilayer perceptron, and recurrent neural network (RNN) models, were trained and evaluated. Bayesian optimization was also implemented to fine-tune these models.
    RESULTS: The evaluation framework revealed that each model exhibited different levels of predictive accuracy and precision. Specifically, the RNN model outperformed the other architectures even without optimization. Comprehensive predictive and perspective analytics were conducted to scrutinize the COVID-19 dataset.
    CONCLUSIONS: This study transcends academic boundaries by offering critical insights that enable public health authorities in the UAE to deploy targeted data-driven interventions. The RNN model, which was identified as the most reliable and accurate for this specific context, can significantly influence public health decisions. Moreover, the broader implications of this research validate the capability of deep learning techniques in handling complex datasets, thus offering the transformative potential for predictive accuracy in the public health and healthcare sectors.
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