throughput

吞吐量
  • 文章类型: Journal Article
    无线传感器网络(WSN)通常由大量离散的传感器节点组成,每个都需要有限的资源,包括记忆,计算能力,和能量。要延长网络生存期,这些有限的资源必须得到有效利用。在WSN中,聚类是优化网络寿命和节能的最佳方法之一。在这项工作中,提出了一种基于合作博弈论(CGT)的能量和吞吐量感知自适应路由(ETAAR)算法。为了在WSN中实现节能和改进的数据速率路由,我们应用了CGT和联盟博弈两种博弈理论。这种路由机制的主要部分是簇头选择和集群节点,以执行节点之间的能量高效和吞吐量有效的通信。在第一阶段,同时采用能量和吞吐量的基于CGT的效用函数被用于手工挑选CH节点。在第二阶段,随着能量和吞吐量,自适应时隙传输考虑了平均端到端延迟,以避免联盟博弈方法中的冲突。MATLAB工具用于仿真。仿真结果表明,所提出的ETAAR协议在剩余能量方面优于早期的路由,PDR,能量到期比,平均端到端延迟,死节点。48%的网络寿命扩展,ETAAR实现了60%的节能和52.5%的延迟短缺。
    A Wireless Sensor Network (WSN) is usually made up of a large number of discrete sensor nodes, each of which requires restricted resources, including memory, computing power, and energy. To extend the network lifetime, these limited resources must be used effectively. In WSN, clustering constitutes one of the best methods for optimizing network longevity and energy conservation. In this work, we proposed a novel Energy and Throughput Aware Adaptive Routing (ETAAR) algorithm based on Cooperative Game Theory (CGT). To achieve the energy efficient and improved data rate routing in WSN, we are applied two game theories of CGT and coalition game. The main part of this routing mechanism is cluster head selection and clustering the nodes to perform energy efficient and throughput effective communication between the nodes. In first stage, CGT based utility function which adopts both energy and throughput is utilized to handpick the CH nodes. In the second stage, along with the energy and throughput, average end-to-end delay is considered for the adaptive time slot transmission to avoid collision in the coalition game approach. MATLAB tool is used for simulation. The simulation results shows that the proposed ETAAR protocol is outperforms than earlier works of routing in terms of residual energy, PDR, energy due ratio, average end-to-end delay, dead nodes. The network lifetime of 48% extension, energy saving of 60% and 52.5% of delay shortage attained in ETAAR.
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  • 文章类型: Journal Article
    临床流式细胞术的自动化有可能通过改进流程并提高效率和准确性来彻底改变该领域。集成先进的机器人技术和人工智能,这些技术可以简化样品制备,数据采集,和分析。自动化样品处理减少了人为错误并提高了吞吐量,允许实验室以一致的精度处理更大的体积。智能算法有助于快速数据解释,帮助识别用于疾病诊断和监测的细胞标志物。这种自动化不仅加快了周转时间,而且确保了可重复性,使临床流式细胞术成为个性化医疗和诊断领域的可靠工具。
    Automation in clinical flow cytometry has the potential to revolutionize the field by improving processes and enhancing efficiency and accuracy. Integrating advanced robotics and artificial intelligence, these technologies can streamline sample preparation, data acquisition, and analysis. Automated sample handling reduces human error and increases throughput, allowing laboratories to handle larger volumes with consistent precision. Intelligent algorithms contribute to rapid data interpretation, aiding in the identification of cellular markers for disease diagnosis and monitoring. This automation not only accelerates turnaround times but also ensures reproducibility, making clinical flow cytometry a reliable tool in the realm of personalized medicine and diagnostics.
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  • 文章类型: Journal Article
    无线传感器网络(WSN)是当前最突出的技术之一。由于其在困难情况下的操作能力,它的受欢迎程度直线上升。WSN市场涵盖了各个行业,包括楼宇自动化,安全网络,医疗保健系统,物流,和军事行动。因此,提高这些网络的能源效率至关重要。分层拓扑,通常使用聚类方法,是最著名的WSN能量优化方法之一。为了在WSN中实现能源效率,首先引入了分层拓扑低能量自适应聚类层次结构(LEACH),这是基金会。然而,传统的LEACH有几个局限性,这导致了广泛的研究,以提高LEACH目前的疗效。使用特定算法和策略来增强常规LEACH协议的功能形成了正在进行的努力的基础。利用这种增强的LEACH,可以通过集中于诸如簇头形成和传输能耗的元素来增强吞吐量和网络寿命方面的性能。与传统的LEACH相比,增强的LEACH算法在吞吐量和网络寿命方面都有了显着改善。通过严格的实验,发现增强算法的吞吐量平均增加了25%,这归因于其动态聚类和优化的路由策略。此外,网络寿命延长了大约30%,主要是因为通过自适应聚类和传输功率控制增强了能量效率。
    Wireless sensor networks (WSN) are among the most prominent current technologies. Its popularity has skyrocketed because of its capacity to operate in difficult situations. The WSN market encompasses various industries, including building automation, security networks, healthcare systems, logistics, and military operations. Therefore, increasing the energy efficiency of these networks is of utmost importance. Hierarchical topology, which typically uses a clustering methodology, is one of the most well-known methods for WSN energy optimization. To achieve energy efficiency in WSN, hierarchical topology low-energy adaptive clustering hierarchy (LEACH) was first introduced, and this served as the foundation. However, conventional LEACH has several limitations, which have led to extensive research into improving LEACH\'s efficacy in its current form. The use of particular algorithms and strategies to enhance the functionality of the conventional LEACH protocol forms the basis of ongoing efforts. Utilizing this enhanced LEACH, performance in terms of throughput and network life may be enhanced by concentrating on elements such as cluster head formation and transmission energy consumption. The enhanced LEACH algorithm demonstrates significant improvements in both throughput and network lifetime compared with conventional LEACH. Through rigorous experimentation, it was found that the enhanced algorithm increases the throughput by 25% on average, which is attributed to its dynamic clustering and optimized routing strategies. Furthermore, the network lifetime is extended by approximately 30%, primarily because of enhanced energy efficiency through adaptive clustering and transmission power control.
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  • 文章类型: Journal Article
    研究表明,定量指标报告可以改善急诊医生的临床表现;然而,很少有研究检查它们对医生培训的影响。主要研究目标是评估为急诊医学(EM)居民提供有关急诊科(ED)处置时间的个性化吞吐量指标的效果。
    我们执行了单中心,回顾性,2021年1月至2022年12月的观察性研究,研究提供上层EM居民个性化吞吐量指标之前和之后的ED处置时间。居民收到了前6个月平均三个特定指标的月度报告:(1)从房间到出院顺序的中位时间(Rm2Dc),(2)从所有结果返回到出院顺序的中位时间(Rlts2Dc),(3)从房间到住院的中位时间(Rm2Hosp)。通过独立t检验比较指标共享之前和期间三个指标的总体平均值,并按培训水平和一年中的时间进行分层。进行调整分析以控制研究期间之间的时间差异。在α=0.05显著性水平下进行测试。
    共有35名独特居民被纳入分析。总的来说,在报告指标之前和期间,平均处置时间没有显着差异:Rm2Dc(154.8分钟与148.9分钟,p=0.109),Rslt2Dc(46.5分钟vs.45.1分钟,p=0.522),和Rm2Hosp(141.7分钟vs.135.7分钟,p=0.257)。亚组分析产生了类似的结果,除了研究生3年级(PGY-3)组的平均Rm2Hosp显着下降(145.8分钟vs.124.1分钟,p=0.004)。用调整的平均值分析产生与用未调整的数据观察到的结果相似的结果。
    总的来说,个性化吞吐量指标与上层EM居民平均ED处置时间的减少无关;然而,在PGY-3居民看到的住院患者中,我们观察到咨询时间平均减少21.7分钟。
    UNASSIGNED: Research suggests that quantitative metric reports can improve the clinical performance of emergency physicians; however, few studies have examined their effects on physicians in training. The primary study objective was to assess the effects of providing emergency medicine (EM) residents with individualized throughput metrics with regard to emergency department (ED) disposition times.
    UNASSIGNED: We performed a single-center, retrospective, observational study from January 2021 to December 2022 examining ED disposition times before and after providing upper-level EM residents individualized throughput metrics. Residents received monthly reports of three specific metrics averaged over the preceding 6 months: (1) median time from room to discharge order (Rm2Dc), (2) median time from return of all results to discharge order (Rlts2Dc), and (3) median time from room and to consult order for hospitalization (Rm2Hosp). Overall mean values of the three metrics before and during metric sharing were compared via independent t-test and stratified by level of training and time of year. Adjusted analysis was performed to control for temporal differences between study periods. Testing was conducted at α = 0.05 level of significance.
    UNASSIGNED: A total of 35 unique residents were included in the analysis. Overall, mean disposition times were not significantly different before and during reporting of metrics: Rm2Dc (154.8 min vs. 148.9 min, p = 0.109), Rslt2Dc (46.5 min vs. 45.1 min, p = 0.522), and Rm2Hosp (141.7 min vs. 135.7 min, p = 0.257). Subgroup analysis yielded similar results, aside from a significant decrease in mean Rm2Hosp in the postgraduate year-3 (PGY-3) group (145.8 min vs. 124.1 min, p = 0.004). Analysis with adjusted means yielded results similar to those observed with unadjusted data.
    UNASSIGNED: Overall, individualized throughput metrics were not correlated with decreased average times to ED disposition for upper-level EM residents; however, in the subset of hospitalized patients seen by PGY-3 residents, we observed a mean decrease of 21.7 min to consultation.
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  • 文章类型: Journal Article
    在这项研究中,我们分析了节点数量有限的CSMA非持久协议,为无线传感器网络等应用提供更准确的结果。有限模型解决了节点计数适中的情况,捕捉现实的系统动力学。我们的分析揭示了对节点计数的依赖性,影响系统吞吐量。随着节点数量的增加,吞吐量行为与Kleinrock的无限模型一致。我们为系统中有限数量的节点推导了一个复杂的闭式吞吐量表达式,数值求解,并提供特定条件的近似表达式。这些见解促进了对低竞争网络性能的理解,尤其是在无限模型变得不足的情况下。
    In this study, we analyze the CSMA Non-Persistent protocol with a finite number of nodes, providing more accurate results for applications like wireless sensor networks. The finite model addresses scenarios where the node count is moderate, capturing realistic system dynamics. Our analysis reveals a dependency on the node count, impacting system throughput. As the node count increases, throughput behavior aligns with Kleinrock\'s infinite model. We derive a complex closed-form throughput expression for a finite quantity of nodes in the system, solved numerically, and offer an approximate expression for specific conditions. These insights advance understanding of low-contention network performance, especially in scenarios where the infinite model becomes inadequate.
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  • 文章类型: Journal Article
    在逆流色谱(CCC)中,线性放大是一种理想的放大策略。然而,当从分析转移到高吞吐量的可预测制备过程时,由于仪器参数差异所施加的限制,线性放大将是具有挑战性的,比如重力,油管横截面积,油管长度,柱体积和流速。针对不同的仪器参数,研究了一些有效的放大策略,但到目前为止,这些放大工程仅在标准圆形(SC)管道上进行了测试。我们小组的先前研究发现,矩形水平(RH)油管与常规SC油管相比,可以使分离效率提高一倍。具有工业生产潜力。本文以从DracocephalummoldavicaL.中分离tilianin为例,演示了如何将优化的工艺从分析SC管到制备RH管。在对溶剂系统进行系统优化后,分析CCC上的样品浓度和流速,获得的优化参数成功地转移到制备CCC。结果表明,使用正己烷-乙酸乙酯-乙醇-水(1:4:1:5,v/v/v/v)的溶剂系统成功地分离了2.07g的粗样品,连续三次分离在75分钟内共产生380毫克的tilianin,高纯度为98.3%,如通过HPLC分析。从分析规模到半制备规模的总吞吐量提高了138倍(从12mg/h提高到1.66g/h),而柱体积仅增加了46.5倍(从15.5mL增加到720mL)。这是CCC在tilianin分离纯化中的成功应用。鉴于SC管道是CCC色谱柱的传统配置,这项研究是证明RH管柱在常规使用和潜在的大规模工业应用中的适用性的必要步骤。
    In counter-current chromatography (CCC), linear scale-up is an ideal amplification strategy. However, when transferring from analytical to predictable preparative processes with high throughput, linear scale-up would be challenging due to limitations imposed by differences in instrument parameters, such as gravitational forces, tubing cross-section area, tubing length, column volume and flow rate. Some effective scale-up strategies have been studied for different instrument parameters, but so far, these scale-up works have only been tested on standard circular (SC) tubing. The previous research of our group found that rectangular horizontal (RH) tubing can double the separation efficiency compared with conventional SC tubing, and has industrial production potential. This paper used the separation of tilianin from Dracocephalum moldavica L. as an example to demonstrate how to scale up the optimized process from analytical SC tubing to preparative RH tubing. After systematic optimization of solvent systems, sample concentration and flow rate on the analytical CCC, the optimized parameters obtained were successfully transferred to the preparative CCC. The results showed that a crude sample of 2.07 g was successfully separated using a solvent system of n-hexane - ethyl acetate - ethanol - water (1:4:1:5, v/v/v/v) in reversed phase mode, and the three consecutive separations produced a total of 380 mg tilianin in 75 min with high purities of 98.3%, as analyzed by HPLC. The total throughput achieved from the analytical to semi-preparative scale was improved by 138 times (from 12 mg/h to 1.66 g/h), while the column volume was increased by only 46.5 times (from 15.5 mL to 720 mL). This is the successful application of CCC for the separation and purification of tilianin. Given that SC tubing is the traditional configuration for CCC columns, this study is a necessary step to prove the applicability of RH tubing columns for routine use and potential large-scale industrial applications.
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  • 文章类型: Journal Article
    背景医院过度拥挤危及患者安全。入院和出院的可变性对整体医院能力的贡献需要量化。这项研究描述了全州范围内住院患者数量的日常波动,整周入院和出院的可变性和模式,以及急诊科(ED)的贡献与选修(非ED)入院和出院到整个系统的整体变化。方法这是对纽约州全州计划与研究合作系统数据库的回顾性分析,所有纽约医疗机构每月提交患者水平的数据。研究期间为2015年1月1日至12月31日。结果包括入院和出院的总量以及按患者来源分类的住院时间(ED与非ED承认(选修))和服务类型(医学与手术)按星期几。结果我们研究了1,692,090例住院患者。周一和周二的入学率最高,一周内稳步下降。整个星期的ED招生几乎没有变化。整周手术选择性入院有显著的变异性,在本周初录取率较高。工作日入院与入院之间存在显着差异(p<0.01)。周末。从星期一到星期五,放电增加,周末急剧下降,对于ED和选修途径。全系统范围,周一,医院比平均容量高21%,在星期五,医院比平均容量低32%。结论整个医院的整体容量在一周内显示出巨大的变化,主要由整周任何来源的选择性录取和出院驱动。因为选修招生是可安排的,医院可以通过平滑调度来减少变异性。周末放电的增加也将提高容量。
    Background Hospital overcrowding compromises patient safety. The contribution of variability in admissions and discharges to overall hospital capacity needs to be quantified. This study describes the statewide day-to-day fluctuation in the volume of hospitalized patients, the variability and pattern of hospital admissions and discharges throughout the week, and the contribution of Emergency Department (ED) vs. elective (non-ED) admissions and discharges to the overall variability in the system across the week. Methodology This is a retrospective analysis of the New York State Statewide Planning and Research Cooperative System database, in which all New York healthcare facilities submit patient-level data monthly. The study period was from January 01 to December 31, 2015. Outcomes included total volumes of admissions and discharges and length of stay sorted by patient origin (ED vs. non-ED admits (elective)) and service type (medicine vs. surgery) by day of the week. Results We studied 1,692,090 hospital admissions. Admissions were highest on Mondays and Tuesdays and steadily decreased throughout the week. There was little variability in the ED admissions throughout the week. Surgical elective admissions had significant variability throughout the week, with higher admissions at the beginning of the week. There was a significant difference (p < 0.01) between admissions on weekdays vs. weekends. Discharges increased from Monday to Friday, with a dramatic drop on the weekends, for both ED and elective pathways. Systemwide, on Monday, hospitals were 21% above the mean volume, and on Fridays, hospitals were 32% below the mean volume. Conclusions Overall hospital capacity shows dramatic variability throughout the week, driven primarily by elective admissions and discharges from any source throughout the week. Because elective admissions are schedulable, hospitals can reduce variability by smoothing scheduling. Increased weekend discharges will also improve capacity.
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  • 文章类型: Journal Article
    在今天的健康监测应用程序中,对能够同时从多个身体区域收集多个生物信号的无线和可穿戴采集平台的需求不断增长。这些系统需要结构良好的软件架构,保持不同的无线传感节点彼此同步,并向外部网关刷新收集的数据。本文提出了一种定量分析,旨在验证无线同步任务(使用自定义协议实现)和数据传输任务(使用BLE协议实现)在原型可穿戴监控平台中。我们评估了交换同步数据包的七个频率(10Hz,20Hz,30Hz,40Hz,50Hz,60Hz,70Hz)以及两种不同的BLE配置(具有和不具有BLE连接间隔参数的动态自适应的实现)。此外,我们在五个不同的用例场景中测试了BLE数据传输性能。因此,当利用40Hz的同步频率和动态自适应时,我们在同步任务中实现了最佳性能(1.18滴答为中值同步延迟,Min-Max范围为1.60滴答,四分位数范围(IQR)为0.42滴答)连接间隔。此外,事实证明,BLE数据传输在通信节点之间的距离较短的情况下效率更高,超过8m,恶化30.5%。总之,这项研究提出了性能最佳的网络配置,以增强分析中的原型平台的同步任务,以及关于数据收集器最佳位置的定量细节。
    In today\'s health-monitoring applications, there is a growing demand for wireless and wearable acquisition platforms capable of simultaneously gathering multiple bio-signals from multiple body areas. These systems require well-structured software architectures, both to keep different wireless sensing nodes synchronized each other and to flush collected data towards an external gateway. This paper presents a quantitative analysis aimed at validating both the wireless synchronization task (implemented with a custom protocol) and the data transmission task (implemented with the BLE protocol) in a prototype wearable monitoring platform. We evaluated seven frequencies for exchanging synchronization packets (10 Hz, 20 Hz, 30 Hz, 40 Hz, 50 Hz, 60 Hz, 70 Hz) as well as two different BLE configurations (with and without the implementation of a dynamic adaptation of the BLE Connection Interval parameter). Additionally, we tested BLE data transmission performance in five different use case scenarios. As a result, we achieved the optimal performance in the synchronization task (1.18 ticks as median synchronization delay with a Min-Max range of 1.60 ticks and an Interquartile range (IQR) of 0.42 ticks) when exploiting a synchronization frequency of 40 Hz and the dynamic adaptation of the Connection Interval. Moreover, BLE data transmission proved to be significantly more efficient with shorter distances between the communicating nodes, growing worse by 30.5% beyond 8 m. In summary, this study suggests the best-performing network configurations to enhance the synchronization task of the prototype platform under analysis, as well as quantitative details on the best placement of data collectors.
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  • 文章类型: Journal Article
    背景:研究表明,静脉(IV)抗生素的一次性剂量不能改善感染的解决。供应商,然而,继续使用它们-特别是在急诊室。很少有研究旨在量化这种做法的成本。
    目的:主要目的是评估急诊(ED)平均总费用的差异,即在出院前口服抗生素和刚出院时口服抗生素接受一次性静脉抗生素的患者之间的差异。次要目标是评估两组之间住院时间的差异,以及药物不良反应的差异和出院后需要医疗保健联系。
    方法:进行图表审查,以确定在2020年4月30日至2022年4月30日期间在ED中接受和未接受一次性IV抗生素的患者。使用微观成本计算方法来确定每位患者的ED相关成本。主要和次要结果的比较使用统计推断测试进行。
    结果:每组共102例患者进行分析。在急诊科接受一次性静脉注射抗生素后再口服抗生素的患者,平均住院时间为4.55小时,与在口服抗生素出院前没有接受一次性静脉注射抗生素的患者相反,这些患者的平均住院时间为2.82小时(绝对差异:1.73小时,p<0.001)。在急诊科一次性使用静脉注射抗生素,每位患者的额外费用约为556美元,在我们的研究队列中,总计超过56,000美元。
    结论:在急诊科使用一次性静脉注射抗生素并没有给患者带来任何额外的益处。一次性剂量的使用导致急诊科的吞吐量显着降低,医疗成本显着增加。
    BACKGROUND: Research shows that one-time doses of intravenous (IV) antibiotics do not improve resolution of infection. However, providers continue to use them-especially in the emergency department (ED). Very few studies have aimed to quantify the cost of this practice.
    OBJECTIVE: The primary objective was to evaluate the difference in average total cost of ED stay between patients who received a one-time dose of IV antibiotics in the ED before discharging on oral antibiotics and patients who were just discharged on oral antibiotics. Secondary objectives were to evaluate the differences in durations of stay between the 2 groups, as well as the differences in adverse drug effects and need for health care contact after discharge.
    METHODS: Chart review was conducted to identify patients who received and did not receive a one-time dose of IV antibiotics in the ED between April 30, 2020, and April 30, 2022. A microcosting approach was used to determine ED-associated costs per patient. Comparisons in primary and secondary outcomes were performed using statistical inferential tests.
    RESULTS: A total of 102 patients were analyzed in each group. Patients who received a one-time dose of IV antibiotics in the ED before being discharged on oral antibiotics had an average length of stay of 4.55 hours, as opposed to patients who did not receive a one-time dose of IV antibiotics before being discharged on oral antibiotics who had an average length of stay of 2.82 hours (absolute difference 1.73 hours, P < 0.001). One-time dosing of IV antibiotics in the ED incurred an additional cost of approximately $556 per patient, totaling to more than $56,000 in our study cohort.
    CONCLUSIONS: The use of one-time IV antibiotics in the ED did not confer any additional benefits to patients. The use of one-time doses resulted in statistically significant reduced throughput in the ED and statistically significant increased health care costs.
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  • 文章类型: Journal Article
    目的:麻醉后监护病房(PACU)内的延误是并发症和效率低下的主要原因。在这个项目中,我们调查了与PACU延迟相关的因素,并实施了缓解这些因素的政策.
    方法:质量改进项目。
    方法:收集了10个月的数据,包括科威特一家三级妇产科医院的1,134名手术患者。与利益攸关方举行了几次会议,以确定和克服导致PACU内部延误的原因。
    结果:PACU延迟的主要原因是由于入院和出院政策不当导致的人力短缺和外科病房缺乏床位。实施了改善入学政策的政策,加快病人出院,并改善通过手术室(OT)的患者流量。这些政策导致患者在OT中花费的平均时间显着减少(25分钟),主要是通过减少在PACU的停留19分钟。
    结论:PACU延迟主要是由于OT以外的原因。Further,需要采取后续行动来评估这些改进的可持续性,并确定可能出现的任何新挑战。
    OBJECTIVE: Delays within the postanesthesia care unit (PACU) are a major cause of complications and inefficiency. In this project, we investigated the factors associated with delays in the PACU and implemented policies to mitigate these factors.
    METHODS: A quality improvement project.
    METHODS: Data were collected for 10 months and included 1,134 surgical patients in a tertiary Obstetrics and Gynecology hospital in Kuwait. Several meetings were held with stakeholders to identify and overcome the reasons contributing to delays within the PACU.
    RESULTS: Among the top reasons for PACU delay were manpower shortage and lack of bed availability in the surgical wards due to improper admission and discharge policies. Policies were implemented to improve admission policy, hasten patient discharge, and improve patient flow through the operating theater (OT). These policies lead to a significant reduction (25 minutes) in the average time patients spend in the OT, mainly by reducing the stay in the PACU by 19 minutes.
    CONCLUSIONS: PACU delays were mostly due to reasons outside the OT. Further, follow-up is needed to assess the sustainability of these improvements and identify any new challenges that may arise.
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