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Improvements to out-of-hospital cardiac arrest and opioid overdose treatment algorithms to enhance positive outcomes
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作者 Charles R.Davis Margot Schinella Mark Papish 《Emergency and Critical Care Medicine》 2025年第2期61-64,共4页
According to the NationalHeart,Lung,and Blood Institute(2023),[1]out-of-hospital cardiac arrests(OHCA)claim more than 350,000 lives every year.In parallel,and considering a timeframe starting in 1999,a continuous incr... According to the NationalHeart,Lung,and Blood Institute(2023),[1]out-of-hospital cardiac arrests(OHCA)claim more than 350,000 lives every year.In parallel,and considering a timeframe starting in 1999,a continuous increase in the number of deaths due to opioid overdose or poisoning(OOP)events is found[2](Fig.1). 展开更多
关键词 opioid overdose DEATHS POISONING treatment algorithms national heart lung blood institute hospital cardiac arrest positive outcomes
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Peri-implant femoral fractures:Challenges,outcomes,and proposal of a treatment algorithm
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作者 Fernando Bidolegui Sebastian Pereira +4 位作者 Mateo Alzate Munera German Garabano Cesar A.Pesciallo Robinson Esteves Pires Vincenzo Giordano 《Chinese Journal of Traumatology》 CAS CSCD 2023年第4期211-216,共6页
Purpose:Non-prosthetic peri-implant fractures are challenging injuries.Multiple factors must be care-fully evaluated for an adequate therapeutic strategy,such as the state of bone healing,the type of implant,the time ... Purpose:Non-prosthetic peri-implant fractures are challenging injuries.Multiple factors must be care-fully evaluated for an adequate therapeutic strategy,such as the state of bone healing,the type of implant,the time and performed personnel of previous surgery,and the stability of fixation.The aim of this study is to propose a rationale for the treatment.Methods:The peri-implant femoral fractures(PIFFs)system,a therapeutic algorithm was developed for the management of all patients presenting a subtype A PIFF,based on the type of the original implant(extra-vs.intra-medulllary),implant length and fracture location.The adequacy and reliability of the proposed algorithm and the fracture healing process were assessed at the last clinical follow-up using the Parker mobility score and radiological assessment,respectively.In addition,all complications were noticed.Continuous variables were expressed as mean and standard deviation,or median and range according to their distribution.Categorical variables were expressed as frequency and percentages.Results:This is a retrospective case series of 33 PIFFs,and the mean post-operative Parker mobility score was(5.60±2.54)points.Five patients(15.1%)achieved complete mobility without aids(9 points)and 1(3.0%)patient was not able to walk.Two other patients(6.1%)were non-ambulatory prior to PPIF.The mean follow-up was(21.51±9.12)months(range 6-48 months).There were 7(21.2%)complications equally distributed between patients managed either with nailing or plating.There were no cases of nonunion or mechanical failure of the original implant.Conclusion:The proposed treatment algorithm shows adequate,reliable and straightforward to assist the orthopaedic trauma surgeon on the difficult decision-making process regarding the management of PIFF occurring in previously healed fractures.In addition,it may become a useful tool to optimize the use of the classification,thus potentially improving the outcomes and minimizing complications. 展开更多
关键词 Peri-implant femoral fracture Peri-osteosynthesis fracture Femurfracture treatment algorithm
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A clinicoradiological classification and a treatment algorithm for traumatic triceps tendon avulsion in adults
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作者 Balaji Zacharia Antony Roy 《Chinese Journal of Traumatology》 CAS CSCD 2021年第5期266-272,共7页
Triceps tendon avulsion(TTA)is an uncommon injury,and there are no classifications or treatment guidelines available.This study aims to describe a clinicoradiological classification and treatment algorithm for traumat... Triceps tendon avulsion(TTA)is an uncommon injury,and there are no classifications or treatment guidelines available.This study aims to describe a clinicoradiological classification and treatment algorithm for traumatic TTA in adults.The functional outcome of surgical repair has been evaluated too.;A retrospective analysis of adult patients with traumatic TTA treated in our institution between 2012 and 2017 was done.We only included complete TTA injuries.Children below 15 years,open injuries,associated fractures,and partial TTA were excluded.The data were obtained from hospital records.The intraoperative findings were correlated with the clinicoradiological presentation for classifying TTA.The functional outcome was analyzed using the Mayo Elbow Performance index and Hospital for Special Surgery elbow score.ANOVA test was used to assess the statistical significance.;There were 15 patients included,including 11 males and 4 females.The mean age was(31.5±9.15)years,and the mean follow-up was(22.4±8.4)months.Fall on outstretched hand was the mode of injury.In 6 patients,diagnosis was missed on the initial visit.TTA were classified as Type 1:palpable soft-tissue defect without bony mass;Type 2:palpable soft-tissue defect with a wafer-thin/comminuted bony fragment on X-ray;Type 3:palpable soft-tissue defect with a bony mass and a large bony fragment on X-ray without extension to the articular surface;and Type 4:an olecranon fracture with less than 25%of the articular surface.An algorithm for treatment was recommended,i.e.transosseous suture repair/suture anchor for Type 1,transosseous suture repair for Type 2,and tension band wiring or steel wire sutures for Types 3 and 4.All the patients achieved good to excellent outcome:the mean Mayo Elbow Performance index was 100 and Hospital for Special Surgery score was 98.26±2.60 on final follow-up.;Our clinicoradiological classification and treatment algorithm for TTAs is simple.Surgical treatment results in excellent functions of the elbow.Since it is a single-center study involving a very small number of cases,a multicenter study with a larger number of patients is required for external validation of our classification and treatment recommendations. 展开更多
关键词 Wounds and injuries Triceps tendon avulsion Injuries around elbow Classification of triceps avulsion treatment algorithm
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A Practical Method to Evaluate and Verify Dose Calculation Algorithms in the Treatment Planning System of Radiation Therapy 被引量:1
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作者 Lanchun Lu Guy Yembi-Goma +5 位作者 Jian Z. Wang Nilendu Gupta Zhibin Huang Simon S. Lo Douglas Martin Nina Mayr 《International Journal of Medical Physics, Clinical Engineering and Radiation Oncology》 2013年第3期76-87,共12页
Purpose: To introduce a practical method of using an Electron Density Phantom (EDP) to evaluate different dose calculation algorithms for photon beams in a treatment planning system (TPS) and to commission the Anisotr... Purpose: To introduce a practical method of using an Electron Density Phantom (EDP) to evaluate different dose calculation algorithms for photon beams in a treatment planning system (TPS) and to commission the Anisotropic Analytical Algorithm (AAA) with inhomogeneity correction in Varian Eclipse TPS. Methods and Materials: The same EDP with various tissue-equivalent plugs (water, lung exhale, lung inhale, liver, breast, muscle, adipose, dense bone, trabecular bone) used to calibrate the computed tomography (CT) simulator was adopted to evaluate different dose calculation algorithms in a TPS by measuring the actual dose delivered to the EDP. The treatment plans with a 6-Megavolt (MV) single field of 20 × 20, 10 × 10, and 4 × 4 cm2 field sizes were created based on the CT images of the EDP. A dose of 200 cGy was prescribed to the exhale-lung insert. Dose calculations were performed with AAA with inhomogeneity correction, Pencil Beam Convolution (PBC), and AAA without inhomogeneity correction. The plans were delivered and the actual doses were measured using radiation dosimetry devices MapCheck, EDR2-film, and ionization chamber respectively. Measured doses were compared with the calculated doses from the treatment plans. Results: The calculated dose using the AAA with inhomogeneity correction was most consistent with the measured dose. The dose discrepancy for all types of tissues covered by beam fields is at the level of 2%. The effect of AAA inhomogeneity correction for lung tissues is over 14%. Conclusions: The use of EDP and Map Check to evaluate and commission the dose calculation algorithms in a TPS is practical. In Varian Eclipse TPS, the AAA with inhomogeneity correction should be used for treatment planning especially when lung tissues are involved in a small radiation field. 展开更多
关键词 Electron Density PHANTOM treatment Planning System ANISOTROPIC Analytical algorithm PENCIL Beam CONVOLUTION INHOMOGENEITY CORRECTION
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含大规模分布式光伏的低压配电网综合治理技术
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作者 王书征 孙玉柱 +3 位作者 赵景涛 郑舒 吴志 石春虎 《电力自动化设备》 北大核心 2026年第1期171-178,208,共9页
随着越来越多的分布式光伏并入低压配电网,配电网的线路损耗、电压越限、三相不平衡等问题日益严重,而单一的治理手段无法满足光伏并网产生的多样化治理需求。为此,提出一种基于电抗器、AC/DC变换器协调配合的低压台区综合治理装置,该... 随着越来越多的分布式光伏并入低压配电网,配电网的线路损耗、电压越限、三相不平衡等问题日益严重,而单一的治理手段无法满足光伏并网产生的多样化治理需求。为此,提出一种基于电抗器、AC/DC变换器协调配合的低压台区综合治理装置,该装置提供2个直流接口,可以灵活增配储能以及实现台区间的柔性互联。基于该装置,构建以减小台区电压偏差、治理三相不平衡以及降低网损为目标的低压配电网运行优化模型;利用对称半正定规划算法,通过凸松弛将原始的非凸非线性模型转换成便于求解的对称半正定规划模型。在某实际系统上对不同综合治理装置配置方式下的治理效果进行对比分析,验证了综合治理装置对解决分布式光伏并网带来的一系列问题的有效性。 展开更多
关键词 综合治理 光伏并网 低压台区 对称半正定规划算法 配电网 运行优化
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Algorithm for the multidisciplinary management of hemorrhage in EUS-guided drainage for pancreatic fluid collections 被引量:2
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作者 Tian-An Jiang Li-Ting Xie 《World Journal of Clinical Cases》 SCIE 2018年第10期308-321,共14页
Pancreatic fluid collections(PFCs),common sequelae of acute or chronic pancreatitis,are broadly classified as pancreatic pseudocysts or walled-off necrosis according to the revised Atlanta classification.Endoscopic ul... Pancreatic fluid collections(PFCs),common sequelae of acute or chronic pancreatitis,are broadly classified as pancreatic pseudocysts or walled-off necrosis according to the revised Atlanta classification.Endoscopic ultrasound(EUS)-guided drainage is often considered a standard first-line therapy preferable to surgical or interventional radiology approaches for patients with symptomatic PFC.EUS-guided drainage is effective and successful;it has a technical success rate of90%-100%and a clinical success rate of 85%-98%.Recent studies have shown a 5%-30%adverse events(AEs)rate for the procedure.The most common AEs include infection,hemorrhage,perforation and stent migration.Hemorrhage,a severe and sometimes deadly outcome,requires a well-organized and appropriate treatment strategy.However,few studies have reported the integrated management of hemorrhage during EUS-guided drainage of PFC.Establishing a practical therapeutic strategy is an essential and significant step in standardized management.The aim of this review is to describe the current situation of EUS-guided drainage of PFCs,including the etiology and treatment of procedure-related bleeding as well as current problems and future perspectives.We propose a novel and meaningful algorithm for systematically managing hemorrhage events.To our limited knowledge,a multidisciplinary algorithm for managing EUS-guided drainage for PFC-related bleeding has not been previously reported. 展开更多
关键词 PANCREATIC FLUID COLLECTIONS HEMORRHAGE Endoscopic ULTRASOUND-GUIDED treatment algorithm Adverse events
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Hepatocellular carcinoma Liver Imaging Reporting and Data Systems treatment response assessment: Lessons learned and future directions 被引量:2
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作者 Anum Aslam Richard Kinh Gian Do +7 位作者 Avinash Kambadakone Bradley Spieler Frank H Miller Ahmed M Gabr Resmi A Charalel Charles Y Kim David C Madoff Mishal Mendiratta-Lala 《World Journal of Hepatology》 CAS 2020年第10期738-753,共16页
Hepatocellular carcinoma(HCC)is a leading cause of morbidity and mortality worldwide,with rising clinical and economic burden as incidence increases.There are a multitude of evolving treatment options,including locore... Hepatocellular carcinoma(HCC)is a leading cause of morbidity and mortality worldwide,with rising clinical and economic burden as incidence increases.There are a multitude of evolving treatment options,including locoregional therapies which can be used alone,in combination with each other,or in combination with systemic therapy.These treatment options have shown to be effective in achieving remission,controlling tumor progression,improving disease free and overall survival in patients who cannot undergo resection and providing a bridge to transplant by debulking tumor burden to downstage patients.Following locoregional therapy(LRT),it is crucial to provide treatment response assessment to guide management and liver transplant candidacy.Therefore,Liver Imaging Reporting and Data Systems(LI-RADS)Treatment Response Algorithm(TRA)was created to provide a standardized assessment of HCC following LRT.LIRADS TRA provides a step by step approach to evaluate each lesion independently for accurate tumor assessment.In this review,we provide an overview of different locoregional therapies for HCC,describe the expected post treatment imaging appearance following treatment,and review the LI-RADS TRA with guidance for its application in clinical practice.Unique to other publications,we will also review emerging literature supporting the use of LI-RADS for assessment of HCC treatment response after LRT. 展开更多
关键词 Hepatocellular carcinoma Liver Imaging Reporting and Data Systems treatment Response algorithm Locoregional therapy Liver Imaging Reporting and Data Systems treatment Response equivocal Arterial phase hyper enhancement Stereotactic body radiotherapy
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Validation of Treatment Planning Dose Calculations: Experience Working with Medical Physics Practice Guideline 5.a. 被引量:2
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作者 Jinyu Xue Jared D. Ohrt +5 位作者 James Fan Peter Balter Joo Han Park Leonard Kim Steven M. Kirsner Geoffrey S. Ibbott 《International Journal of Medical Physics, Clinical Engineering and Radiation Oncology》 2017年第1期57-72,共16页
Recently published Medical Physics Practice Guideline 5.a. (MPPG 5.a.) by American Association of Physicists in Medicine (AAPM) sets the minimum requirements for treatment planning system (TPS) dose algorithm commissi... Recently published Medical Physics Practice Guideline 5.a. (MPPG 5.a.) by American Association of Physicists in Medicine (AAPM) sets the minimum requirements for treatment planning system (TPS) dose algorithm commissioning and quality assurance (QA). The guideline recommends some validation tests and tolerances based primarily on published AAPM task group reports and the criteria used by IROC Houston. We performed the commissioning and validation of the dose algorithms for both megavoltage photon and electron beams on three linacs following MPPG 5.a. We designed the validation experiments in an attempt to highlight the evaluation method and tolerance criteria recommended by the guideline. It seems that comparison of dose profiles using in-water scan is an effective technique for basic photon and electron validation. IMRT/VMAT dose calculation is recommended to be tested with some TG-119 and clinical cases, but no consensus of the tolerance exists. Extensive validation tests have provided the better understanding of the accuracy and limitation of a specific dose calculation algorithm. We believe that some tests and evaluation criteria given in the guideline can be further refined. 展开更多
关键词 DOSE CALCULATION algorithm treatment PLANNING System BEAM Data Modeling VALIDATION Test MPPG 5.a.
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优化算法在污水处理中的应用进展 被引量:1
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作者 刘良才 毛文煜 +6 位作者 郑逸洁 戴泽军 胡启星 胡智泉 陈鹏 郑军 刘李侃 《工业水处理》 北大核心 2025年第7期11-18,共8页
现有的污水处理系统存在自动化水平低、运行成本高和出水不稳定等问题,优化算法的应用可以提高水处理过程的处理效率和自动化控制水平。综述了污水处理系统几种主要的优化算法,包括遗传算法(GA)、粒子群优化算法(PSO)、随机森林(RF)、... 现有的污水处理系统存在自动化水平低、运行成本高和出水不稳定等问题,优化算法的应用可以提高水处理过程的处理效率和自动化控制水平。综述了污水处理系统几种主要的优化算法,包括遗传算法(GA)、粒子群优化算法(PSO)、随机森林(RF)、人工神经网络(ANN)、模糊逻辑控制(FLC)和混合优化算法,并介绍了各类优化算法的优缺点及适用范围,随后讨论了优化算法在水质异常数据监测与补偿、运行参数预测、控制参数优化和多目标优化控制等不同水处理环节中的应用。优化算法的应用提升了污水处理的自动化控制水平、出水质量,降低了运营成本,可有效预测和调节操作参数。最后,探讨了优化算法在实际工程应用中面临的挑战,指出优化算法和系统集成技术仍存在局限,并为优化算法在水处理领域的深入研究与应用指明了发展方向。 展开更多
关键词 污水处理 优化算法 机器学习 模型预测 神经网络
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Current status of endoscopic resection for small rectal neuroendocrine tumors 被引量:1
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作者 Jian-Ning Liu Hui Chen Nian Fang 《World Journal of Gastroenterology》 2025年第19期10-27,共18页
Rectal neuroendocrine tumor(rNET)is an indolent malignancy often detected during colonoscopy screening.The incidence of rNET has increased approximately 10-fold over the past 30 years.Most rNETs detected during screen... Rectal neuroendocrine tumor(rNET)is an indolent malignancy often detected during colonoscopy screening.The incidence of rNET has increased approximately 10-fold over the past 30 years.Most rNETs detected during screening endoscopy are small,measuring<10 mm.Current guidelines recommend endoscopic resection for small,well-differentiated rNET using modified endoscopic submucosal resection(mEMR)or endoscopic submucosal dissection.However,the optimal endoscopic treatment method remains uncertain.This paper summarizes the evidence on mEMR with submucosal stretching,mEMR without submucosal stretching,endoscopic submucosal dissection and endoscopic full-thickness resection.Given that rNETs often exhibit submucosal invasion,achieving adequate resection depth is crucial to ensure histological complete resection.mEMR with submucosal stretching appears favorable due to its high rate of histological complete resection,safety and convenience.Risk factors associated with lymph node and distant metastases are also discussed.A treatment algorithm is proposed to facilitate clinical decision-making. 展开更多
关键词 Rectal neuroendocrine tumor Endoscopic resection Endoscopic submucosal dissection Modified endoscopic mucosal resection Histological complete resection Resection depth Risk factor treatment algorithm
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基于IGWO-BP-PID的污水处理管道流体控制 被引量:1
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作者 孙宏昌 苏云飞 +2 位作者 蒋永翔 李超 邓三鹏 《传感器与微系统》 北大核心 2025年第6期91-94,共4页
智能污水处理系统管道内流量通过管道阀开度进行控制。建立了系统中重要流域的几何模型与湍流方程,通过ANSYS Workbench软件对重要管道进行有限元分析,获得管道阀不同开度下重要管道内的流速和压力,将其与实际情况进行对比,验证了有限... 智能污水处理系统管道内流量通过管道阀开度进行控制。建立了系统中重要流域的几何模型与湍流方程,通过ANSYS Workbench软件对重要管道进行有限元分析,获得管道阀不同开度下重要管道内的流速和压力,将其与实际情况进行对比,验证了有限元模型的有效性,并分析开度对管道流通情况的影响。为提高对阀门开度的控制能力,提出了一种改进GWO-BP算法优化PID控制(IGWO-BP-PID)算法对管道阀开度进行控制,通过有限元方法进行大量实验,为智能控制算法提供数据集,通过仿真实验验证了该控制方式能有效提高对污水阀门的控制能力。 展开更多
关键词 污水处理 阀门控制系统 流体仿真 PID算法
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Dose Distributions in Simulated Electron Radiotherapy with Intraoral Cones Using Treatment Planning System
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作者 Tomohiro Shimozato Kuniyasu Okudaira 《International Journal of Medical Physics, Clinical Engineering and Radiation Oncology》 2017年第3期280-289,共10页
Aim: This study aims to evaluate the difference between depth data from an intraoral cone and a conventional irradiation tube calculated using a treatment planning system (TPS), and that measured using an intraoral co... Aim: This study aims to evaluate the difference between depth data from an intraoral cone and a conventional irradiation tube calculated using a treatment planning system (TPS), and that measured using an intraoral cone for electron radiotherapy. Background: A TPS is only compatible with conventional irradiation tubes. However, such systems are not suitable for determining dose distributions when a special cone is employed. Materials and Methods: Dose distributions were calculated using the beam data for mounted intraoral cones using a TPS. Then, the dose distribution by field size was calculated for a low-melting-point lead alloy using the beam data for a mounted conventional tube. The calculated data were evaluated against the measured intraoral-cone depth data based on the dose and depth differences. Results: The calculated data for the intraoral cone case did not match the measured data. However, the depth data obtained considering the field size determined for the lead alloy using the conventional tube were close to the measured values for the intraoral cone case. The difference in the depth at which the absorbed dose was 50% of the maximum value of the percentage depth dose was less than ±4 mm for the generalized Gaussian pencil beam convolution algorithm and less than ±1 mm for the electron Monte Carlo algorithm. Conclusion: It was found that the measured and calculated dose distributions were in agreement, especially when then electron Monte Carlo algorithm was used. Thus, the TPS can be employed to determine dose distributions for intraoral cone applications. 展开更多
关键词 treatment Planning System ELECTRON RADIOTHERAPY INTRAORAL CONE Depth DOSE algorithm
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Harnessing the Power of Artificial Intelligence in Neuromuscular Disease Rehabilitation: A Comprehensive Review and Algorithmic Approach
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作者 Rocco de Filippis Abdullah Al Foysal 《Advances in Bioscience and Biotechnology》 CAS 2024年第5期289-309,共21页
Neuromuscular diseases present profound challenges to individuals and healthcare systems worldwide, profoundly impacting motor functions. This research provides a comprehensive exploration of how artificial intelligen... Neuromuscular diseases present profound challenges to individuals and healthcare systems worldwide, profoundly impacting motor functions. This research provides a comprehensive exploration of how artificial intelligence (AI) technology is revolutionizing rehabilitation for individuals with neuromuscular disorders. Through an extensive review, this paper elucidates a wide array of AI-driven interventions spanning robotic-assisted therapy, virtual reality rehabilitation, and intricately tailored machine learning algorithms. The aim is to delve into the nuanced applications of AI, unlocking its transformative potential in optimizing personalized treatment plans for those grappling with the complexities of neuromuscular diseases. By examining the multifaceted intersection of AI and rehabilitation, this paper not only contributes to our understanding of cutting-edge advancements but also envisions a future where technological innovations play a pivotal role in alleviating the challenges posed by neuromuscular diseases. From employing neural-fuzzy adaptive controllers for precise trajectory tracking amidst uncertainties to utilizing machine learning algorithms for recognizing patient motor intentions and adapting training accordingly, this research encompasses a holistic approach towards harnessing AI for enhanced rehabilitation outcomes. By embracing the synergy between AI and rehabilitation, we pave the way for a future where individuals with neuromuscular disorders can access tailored, effective, and technologically-driven interventions to improve their quality of life and functional independence. 展开更多
关键词 Neuromuscular Diseases REHABILITATION Artificial Intelligence Machine Learning Robotic-Assisted Therapy Virtual Reality Personalized treatment Motor Function Assistive Technologies algorithmic Rehabilitation
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基于数据分解与蜣螂优化TCN-BiGRU/BiLSTM污水处理水质预测 被引量:1
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作者 冯旭刚 唐雷 +5 位作者 安硕 杨克 王璐 唐得志 王正兵 柳传武 《化工学报》 北大核心 2025年第10期5249-5261,共13页
针对污水处理内部机理错综复杂,出水水质难以实时检测和有效控制的问题,提出了一种基于数据分解与改进蜣螂优化(DBO)TCN-BiGRU/BiLSTM的出水水质组合预测模型。采用相关性分析法在进水变量中选出与出水指标强相关的变量,作为预测模型的... 针对污水处理内部机理错综复杂,出水水质难以实时检测和有效控制的问题,提出了一种基于数据分解与改进蜣螂优化(DBO)TCN-BiGRU/BiLSTM的出水水质组合预测模型。采用相关性分析法在进水变量中选出与出水指标强相关的变量,作为预测模型的辅助输入特征;通过变分模态分解(VMD)对出水水质序列进行分解,简化为若干子序列,并计算每个子序列的样本熵,将其按照复杂度划分为高、低两类,据此构建出TCNBiLSTM和TCN-BiGRU两种混合预测模型;引入Tent混沌映射和柯西变异策略改进的DBO算法对组合模型进行优化。对比实验结果表明,在出水总氮(TN)和化学需氧量(COD)的预测中,相较于CNN-LSTM、VMDTCN-BiGRU、VMD-TCN-BiLSTM和VMD-TCN-BiGRU/BiLSTM模型,所提出的模型平均RMSE和MAE分别降低35.22%~52.41%和39.38%~55.53%,平均R^(2)提高2.91%~7.55%,模型预测精度明显提高,且对于实测数据中的非线性复杂性问题表现出色,具有良好的工程应用价值。 展开更多
关键词 算法 优化 预测 污水处理
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基于二次分解和BiLSTM的污水厂出水COD浓度预测 被引量:1
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作者 张京新 何皎洁 +5 位作者 蔡庆旺 康子怡 杨玉思 王彤 曹仙桃 杨利伟 《化工学报》 北大核心 2025年第6期2859-2871,共13页
针对某污水处理厂出水化学需氧量(chemical oxygen demand,COD)浓度预测问题,提出了一种基于自适应噪声完备经验模态分解(complete ensemble empirical mode decomposition with adaptive noise,CEEMDAN)、变分模态分解(variational mod... 针对某污水处理厂出水化学需氧量(chemical oxygen demand,COD)浓度预测问题,提出了一种基于自适应噪声完备经验模态分解(complete ensemble empirical mode decomposition with adaptive noise,CEEMDAN)、变分模态分解(variational mode decomposition,VMD)二次分解、双向长短期记忆神经网络(bidirectional long short-term memory,BiLSTM)的出水COD预测模型,并引入吸血水蛭优化算法(blood-sucking leech optimizer,BSLO)对模型进行优化。首先,设计CEEMDAN算法对原始出水浓度序列进行分解,将复杂的时间序列分解为若干相对简单的子序列;然后,应用VMD对具有不稳定的高频不规则波形的子序列进行二次分解;最后,应用BSLO对BiLSTM进行优化,并比较未分解、一次分解、二次分解以及无优化算法下80个模型在污水厂出水COD浓度预测问题中的性能。结果表明,优化算法的引入提高了模型预测的性能,BSLO模型具有更快的速度和更高的精度;相比于其他模型,基于二次分解的BSLO+CEEMDAN+VMD+BiLSTM模型能够有效克服实测数据非线性和复杂性问题,在该厂出水COD预测中表现出优秀的预测精度和泛化能力。 展开更多
关键词 算法 预测 废水 优化 污水处理
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基于粒子滤波算法的救援机器人路径规划研究 被引量:1
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作者 任启隆 徐媛媛 +1 位作者 瞿良玮 杨嘉鹏 《新疆农机化》 2025年第3期49-52,57,共5页
现代救援中救援机器人有着非常重要的作用,有效的传感器信息收集和高效的路径规划对于提高救援效率至关重要。本文旨在探讨救援机器人在复杂环境下的路径规划问题,通过分析救援场景的特点,提出了多传感器加粒子滤波算法进行路径规划的框... 现代救援中救援机器人有着非常重要的作用,有效的传感器信息收集和高效的路径规划对于提高救援效率至关重要。本文旨在探讨救援机器人在复杂环境下的路径规划问题,通过分析救援场景的特点,提出了多传感器加粒子滤波算法进行路径规划的框架,将快速随机树算法、人工势场法和粒子滤波算法融合,同时将激光雷达、雷达生命探测仪和红外热成像仪传感器实装到同一个机器人中。该框架利用不同传感器的优势,通过智能算法优化路径规划决策。利用机器学习技术对环境进行动态适应,并将收集到的现场信息传递给救援人员。通过MATLAB上对RRT、APF和PF、EKF算法在偏移误差上进行对比验证,结果表明RRT偏移误差降低19.556%,APF偏移误差降低10.4799%,该方法可以有效提升路径规划的效率和准确性,为救援机器人的实际应用提供了理论依据和技术支撑。 展开更多
关键词 救援机器人 路径规划 多传感器融合 智能算法 应急处理
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基于SSA优化的变论域模糊PID控制器及其污水处理过程应用 被引量:1
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作者 李志峰 熊伟丽 《计算机工程》 北大核心 2025年第7期339-347,共9页
由于复杂多变的生化反应、进水流量和浓度的不断变化,污水处理过程表现出强非线性和时变性等特征,从而导致其过程变量难以精确控制。设计一种麻雀搜索算法(SSA)优化的变论域模糊比例、积分和微分(PID)控制器,对溶解氧和硝态氮浓度进行... 由于复杂多变的生化反应、进水流量和浓度的不断变化,污水处理过程表现出强非线性和时变性等特征,从而导致其过程变量难以精确控制。设计一种麻雀搜索算法(SSA)优化的变论域模糊比例、积分和微分(PID)控制器,对溶解氧和硝态氮浓度进行跟踪控制。首先利用SSA优化第5单元和第2单元的变论域模糊PID控制器的PID初始参数值;然后进行二次寻优,即对量化因子和比例因子进行优化,并设计基于模糊规则的论域自适应调整策略在线整定控制器参数,以提高控制器的跟踪精度;最后应用污水处理过程国际基准仿真平台进行恒值和动态变值跟踪控制的实验验证。实验结果表明,与基于自适应伸缩因子变论域模糊PID控制器、模糊PID控制器、常规PID控制器相比,所设计控制器的绝对误差积分指标明显降低,在有效降低能耗的同时提升了出水水质。 展开更多
关键词 污水处理过程 麻雀搜索算法 变论域模糊 比例、积分、微分控制器 参数优化
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人工智能医疗产业的竞争风险治理——以数据和算法为中心 被引量:1
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作者 林洧 《竞争政策研究》 2025年第1期91-104,共14页
人工智能医疗是社会与技术共生的系统,医疗健康数据与算法共同构成了人工智能医疗行业发展的支点。人工智能医疗企业可能利用数据与算法实施不正当竞争行为,由此衍生出的数据驱动型与算法驱动型两种竞争风险对公平的市场竞争秩序造成了... 人工智能医疗是社会与技术共生的系统,医疗健康数据与算法共同构成了人工智能医疗行业发展的支点。人工智能医疗企业可能利用数据与算法实施不正当竞争行为,由此衍生出的数据驱动型与算法驱动型两种竞争风险对公平的市场竞争秩序造成了冲击。对此,我国采取传统竞争法的规制方式对其予以治理,将数据与算法纳入竞争法的规制范畴;欧美则通过专门立法的方式,将数据与算法纳入数字经济领域竞争法的规制范畴,积累了丰富的反垄断执法经验。立足于人工智能医疗产业市场竞争的特殊性,我国应当参考域外的立法与执法经验,探索更具效能的竞争风险治理体系。这不仅要求借助监管沙盒的政策工具对人工智能医疗产品或服务进行测试,对相关的竞争法规范与政策进行检验;还要求根据数据、算法的类型化界分,进一步完善竞争法规制机制,例如重构相关市场界定方法、健全竞争力审查规则、创新算法共谋的认定机制等。 展开更多
关键词 人工智能医疗 数据 算法 反不正当竞争法 反垄断法 监管沙盒
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基于集成学习算法的尾气处理装置SO_(2)排放预测模型 被引量:3
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作者 张宝东 杜支文 +1 位作者 闫昭 侯磊 《石油与天然气化工》 北大核心 2025年第1期9-17,共9页
目的精确预测天然气净化厂尾气处理装置烟气中二氧化硫(SO_(2))排放质量浓度。方法利用某天然气净化厂2018—2023年每小时44000条尾气处理日报数据构建数据集,进行数据处理,并利用重要性分析方法提取27个重要特征。针对烟气中SO_(2)排... 目的精确预测天然气净化厂尾气处理装置烟气中二氧化硫(SO_(2))排放质量浓度。方法利用某天然气净化厂2018—2023年每小时44000条尾气处理日报数据构建数据集,进行数据处理,并利用重要性分析方法提取27个重要特征。针对烟气中SO_(2)排放质量浓度的预测任务,采用了随机森林(Random Forest)、梯度提升(Gradient Boost)和极值梯度提升(XGBoost)3种集成学习算法,以及基于径向基(RBF)内核的支持向量机(SVM)替代仿真模型进行建模。结果3种集成学习模型比SVM单模型的预测效果更为精准,而Random Forest模型展现出最佳性能,决定系数为0.89,均方误差为1250.59,相对于8800个真实测试集样本数据,其预测偏差为9.86%,相比于Random Forest模型(数据未处理),其决定系数提高了61.82%。结论Random Forest模型在准确预测尾气处理装置SO_(2)排放质量浓度方面具有实际生产应用价值,可为后续尾气处理装置的工艺参数优化提供可靠的模型支持。 展开更多
关键词 天然气净化 硫磺回收 尾气处理 二氧化硫排放 预测模型 集成学习算法
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金属材料锻造和热处理行业的节能研究进展
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作者 温保鹏 陈民涛 +4 位作者 豆瑞锋 高超平 张四宗 刘训良 温治 《金属加工(热加工)》 2025年第4期1-10,19,共11页
金属材料锻造和热处理工艺具有高污染、高能耗的生产特征,对现有工艺进行节能优化是产业绿色升级的关键。众多学者从试验方法、数值模拟和人工智能等角度提出了一些优化方案,这些成果在帮助企业提升生产效率的同时也提高了能源利用率,... 金属材料锻造和热处理工艺具有高污染、高能耗的生产特征,对现有工艺进行节能优化是产业绿色升级的关键。众多学者从试验方法、数值模拟和人工智能等角度提出了一些优化方案,这些成果在帮助企业提升生产效率的同时也提高了能源利用率,实现了低碳发展。对金属材料的锻造和热处理工艺进行了系统的阐述,将节能优化方案分为试验方法、数值模拟和人工智能等三类,并分析讨论了每种方案的优缺点。其中数值模拟可通过全面分析对生产过程进行优化,但具有计算时间长的缺点。同时数值模拟技术近年来不断向数字孪生方向发展,能够使预测结果与实际生产实时交互,实现动态优化。 展开更多
关键词 节能 金属锻造 热处理 优化算法
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