基于SSA-LSTM的膝关节置换术后步态机能评估方法研究

针对膝关节置换术患者的术后康复过程中需要由康复医师完成定量评估,但这种传统方法的诊疗效率低的问题,提出一种基于麻雀搜索算法-长短期记忆神经网络(Sparrow Search Algorithm-Long Short-Term Memory,SSA-LSTM)的步态机能评估方法。该方法旨在通过高效、精确的量化评估,辅助康复医师更好地指导患者术后恢复。首先,提取了正常人和患者之间的步态时空参数,设计了回归评价指标;其次,利用麻雀搜索算法优化长短期记忆神经网络,构建了步态机能模型用于分析和评估。结果表明,相比传统回归模型,优化后模型的决定系数有所提升,平均绝对误差降低了25%,为膝关节置换术患者术后康复的步态分析提供了一种科学有效的量化评估方法。

日本的医院管理和医疗机能评估模式

本文阐述了日本医疗质量评估制度和医疗机能评估体系,介绍了其产生的历史背景、发展状况、存在的问题及改进方向。

新冠疫情下欧美运动员重返赛场身体机能评估的经验及其对我国启示

运用文献资料、逻辑推理等方法,对欧美运动员重返赛场身体机能评估的指南建议、诊断流程与实施路径进行探析。研究认为,欧美各医疗协会主张新冠肺炎感染后身体机能评估以疾病症状(无症状感染、轻度感染、中度感染、重症感染)作为风险分层依据,对应实施诊断流程以跟踪临床预后发展趋势和评估疾病康复迹象。筛查诊断显示,运动员感染新冠肺炎后对心肺损伤较轻且并发症较少,无症状、轻度感染的运动员在隔离休息10天无需附加任何筛查诊断可重返赛场,但对中度感染、重症感染的运动员有待精准筛查。对此,从临床实践技能、人工智能技术、防疫诊疗方案、监视体能状况和训练免疫机制5个方面入手,可为我国运动员重返赛场身体机能评估提供理论体系构建和策略手段选择,也为身体机能评估与竞技训练相关理论的构建提供参考。

浅谈39例小婴儿肺炎治疗的临床体会

目的总结小婴儿肺炎治疗的经验，对今后小婴儿肺炎的治疗做出改进。方法采用综合性≯自疗措施临床常规对”肺炎”之抗感染（主要为抗病毒治疗）平喘，雾化，祛痰等治疗。结果经治疗3～1Od后，25例治愈，14例好转。结译0-4月小婴儿肺炎存在着起病急，变化快，并发病情相对较多，病情存在一定的隐匿性，值得临床工作者高度警惕，今后的治疗应从整体机能评估治疗的观点出发，关注局部治疗。

帕金森病实施个体化运动处方的建议

帕金森病(PD)是发病率仅次于阿尔茨海默病的常见神经退行性疾病。诸多证据表明,除了药物和外科治疗外,运动处方可作为目前PD治疗的辅助和补充,帮助控制PD患者的运动及非运动症状。为了方便健康专业人员为PD患者提供适宜的运动处方,并鼓励PD患者尽早进行有针对性的运动锻炼,本文对PD运动处方的研究成果进行概述,并给出关于运动方式、时间和强度的建议。

拳击运动员备战第12届全运会尿十项指标分析

了解男子拳击运动员尿十项指标在备战大型体育赛事期间变化规律,直观指导教练员与科研人员对运动员负荷量和强度的适应与恢复。以重庆男子拳击专业队重点队员杜雨雨为研究对象,监测在备战第十二届全运会训练期间3月和8月的尿十项指标个案分析。结果表明:2013年3月份每周五实战后即刻尿十项中,尿蛋白阳性出现了2次,尿潜血出现1次;8月份即刻,尿蛋白阳性出现了3次,尿潜血出现了1次;3月份晨尿阳性指标为PH、PRO、URO,尿比重持续≥1.030,其余指标为阴性,URO在3月25日和4月1日阳性反应各一次。PRO阳性高峰指标出现在大负荷训练课后的24 h-48 h,维持两天后恢复到正常水平。尿PH值为6.14±0.45,8月份晨尿结果显示URO在8月13、19、26日阳性反应。PRO阳性指标按8月上旬和中旬持续在较高水平,尿PH值下降为5.86±0.23。结论:尿十项监测可以作为男子拳击运动员赛前训练机能监控的有效手段,其中尿蛋白、尿胆原、尿潜血、尿比重的阳性率较高,应作为主要关注的指标;运动员尿PH值明显下降时疲劳程度较高,可作为补充碱性食物等恢复手段的依据;尿蛋白指标可以作为评估训练强度的敏感指标,但其高峰出现有24-48小时的滞后;尿胆原指标对整体训练负荷较敏感,可作为短期整体训练负荷的评估指标。

Performance evaluation methods and instrumentation for mine ventilation fans

Ventilation fans are one of the most important pieces of equipment in coal mines. Their performance plays an important role in the safety of staff and production. Given the actual requirements of coal mine production,we instituted a research project on the measurement methods of key performance parameters such as wind pressure,amount of ventilation and power. At the end a virtual instrument for mine ventilation fans performance evaluation was developed using a USB interface. The practical performance and analytical results of our experiments show that it is feasible,reliable and effective to use the proposed instrumentation for mine ventilation performance evaluation.

青少年羽毛球运动员的选材

对青少年羽毛球运动员的形体、身体素质、心理特征、视力、听力等指标进行评估,分析了运动员成绩与身体机能及心理素质的关系,以期为青少年运动员的选材和培养提供参考。

A three-level mobility management scheme for hierarchical mobile IPv6 networks

Performance evaluation shows that Hierarchical Mobile IPv6 (HMIPv6) cannot outperform standard Mobile IPv6 (MIPv6) in all scenarios. Thus, adaptive protocol selection under certain circumstances is desired. Moreover, it is necessary to balance the load among different Mobility Anchor Points (MAPs). This paper proposes an efficient three-level hierarchical ar- chitecture for mobility management in HMIPv6 networks, in which a mobile node (MN) may register with either a higher/lower MAP or its home agent according to its speed and the number of connecting correspondent nodes (CNs). An admission control algorithm and a replacement algorithm are introduced to achieve load balancing between two MAP levels and among different MAPs within the same MAP level. Admission control is based on the number of CNs but not MNs that an MAP serves. In case there is no capacity for an MN, the MAP chooses an existing MN to be replaced. The replaced MN uses the MAP selection al- gorithm again to choose another mobility agent. Simulation results showed that the proposed scheme achieves better performance not only in reducing the signaling overhead, but also in load balancing among different MAPs.

Comparison between Conventional and Improved Gas Engine-Driven VRF under Same Climate Conditions

This paper reports the on-site performance evaluation of conventional and improved gas engine-driven VRF （variable refrigerant flow） units and （abbreviated as GHP） units. The study aims to elucidate two actual GHP units by using the probe insertion method. There is a tendency to decrease energy efficiency compared to a high loading factor. GHP operation was almost all part load operation. This on-site evaluation indicates a clear difference between conventional and improved GHP.

Short Term Evaluation of a Novel Eletronic Transanal Irrigation System in Patients with Neurogenic Bowel Dysfunction Previously Exposed to Transanal Irrigation Systems

Introduction： Neurogenic bowel dysfunction is one of the most distressing consequences of the spinal cord injury. Transanal irrigation has proven to be a treatment for many such individuals, but there are some patients with sub-optimal response to it. Our aim was to evaluate the satisfaction, safety, perception and compliance of a new transanal irrigation device, Navina Smart system featuring an electronically driven pump with a digital control. Material and methods： Twenty-eight patients who had previously used, or were currently using transanal irrigation were enrolled. They were trained to use the Navina Smart system and were thereafter treated for four weeks. Patient perception, compliance and level of satisfaction were assessed at baseline and at the end of treatment. Results： At the end of treatment 68% of patients were still using the system and 50% of ITT （intended to treat） wished to continue using the system. Navina Smart was well tolerated with no adverse effects in the cohort. Patient perception of the Navina Smart system was positive in 67%. Conclusions： Navina Smart system was shown to be safe, tolerable and effective in two-thirds of patients who were unsatisfied with their previous bowel care and was associated with an increase in the patient＇s independence.

Designing Sustainable Airport Ground Access/Egress Systems Supported by Fast-Time Modeling

The problems of airport landside capacity assessment are of industry-wide interest. Evaluation of landside capacity enables airport operators and airport designers to identify passenger and baggage flow bottlenecks, identify the primary cause of bottlenecks formation and take measures mitigating the impact of bottlenecks on the airport terminal operation. Many studies dealing with the problems of airport landside capacity are focused mainly on the processing part of the airport terminal and consider the airport terminal to be an isolated system. Even the most of models of airport landside operations developed using various simulation （both generic and dedicated） software packages （e.g., PaxSim, SLAM, WITNESS, ARENA or EXTEND） are designed for simulating the passenger and baggage flows only between curb-side and apron. Although this approach provides valuable data concerning capacity, delays or processing bottlenecks, in some cases identified capacity constraints are only the symptoms of the actual problem. In order to discover the cause of the problem, it is necessary to consider the airport terminal as an integral part of much more complex regional, national or international transportation system. This article reflects the above mentioned requirements and introduces an innovative approach to passenger and baggage flow simulation based on the fact that airport terminal is considered as an integral part of air passenger door-to-door transportation process.

Online Assessment System with Offline Capabilities

There has been increasing research in developing offline web applications. This paper concentrates on developing a new methodology for the online assessment web applications that could be used while offline. It is important to retrieve the critical data collected during an examination without a provision of a backup mechanism. There is a need for an assessment system that can adapt to work uninterruptedly and without loss of critical data while there is intermittent intemet discontinuity. This paper describes architecture and implementation of online assessment system with offline capabilities. Online assessment system with offline capabilities will not interrupt examinee＇s experience while appearing for an assessment test if intemet connection is not available. A development methodology is designed and a compliant framework is implemented to enhance online assessment system with offline capabilities.

Early Stage CAD-Compliant Energy Performance Assessment Method

A simple calculator for early stage energy performance assessment in residential buildings was developed and partially validated in this study. The calculator is based on the correlation of heat loss and energy need for heating and has fixed internal heat gains as intended for compliance assessment. With the calculator, the effect of any parameter implemented can be immediately seen on delivered and primary energy. Because of simple equations, it is suitable for implementation into CAD （computer aided design） design tools including basic BIM （building information modeling） data. Results showed that the accuracy of the correlation for the cases with practical relevance was not worse than 14% of the energy need of space heating. This applies for passive house insulation level; for less insulated building envelopes, the deviations were smaller. This 14% equals to only 3 kWh/（m2.a）, i.e., the percentage difference in the total delivered and primary energy was much lower because of other components in the energy balance. The deviations determined were implemented in the calculator as safety margin. Results prove that simple energy performance assessment based on specific heat loss coefficient is well justified for early stage energy analyses as well as for compliance assessment implemented in Estonian regulation.

Assessment of Wind Characteristics and Wind Potential Energy Yield in the Jordanian Southern Region

This study presents investigation and assessment of wind characteristics and wind energy potential for four sites at the Jordanian southern region （Hareer, Ma＇an, Aqaba and Fujaij）. Based on the available measured data sources, the data were analyzed using hourly and mean monthly WS （wind speed） data at different heights, using a two-parameter probability distribution of Weibull function. The recognized monthly and yearly Weibull functions were considered for the second analysis step. The wind potential energy yields assessment for an ideal capable wind turbine was implemented. Finally, for energy yield estimation, a wind turbine from Vestas with a 660 kW rated power was chosen. The wind turbine characteristics： AF （availability factor）, CF （capacity factor） and wind turbine efficiency （η）, were defined and calculated for each site. The result of the analysis showed that, all sites have good wind energy potential, the Hareer site at Tafila has the best wind resources.

Modelling of Chillers for Energy Performance Assessment of HVAC Systems

The reliable assessment of the annual energy demand has become necessary in view of building energy performance certification. Accurate models must be used to simulate the behaviour of HVAC （heating, ventilation and air conditioning） components in real operation, usually characterized by a wide variation of building loads. In this context, this paper deals with the development and validation of an algorithm aimed at the assessment of part load performance of various kinds of controls for vapour compresion based heat pumps and chillers, in particular referring to on-off, inverter-driven and multi-stage vapour compression. The reliability of this algorithm in the calculation of seasonal performances is checked against monitoring of heat pumps and chillers operating under real conditions.

TENCEL -A High-Performance Sustainable Cellulose Fiber for the Construction Industry/Composites

Fibers are used in various areas for improving the performance of different materials, commonly used are synthetic fibers and glass fibers. More and more sustainable alternatives are required to reduce energy consumption and the carbon footprint. Traditional natural fibers （like hemp or flax） very often do not fulfill requirements for construction purposes like resistance to elevated temperature or lacking purity. Also mechanical properties of natural fibers are influenced by factors like harvesting, kink bands, climate and growth conditions. Lenzing AG has put a lot of efforts into developing a sustainable fiber overcoming the above mentioned issues. The raw material for TENCEL is wood, which is transformed into a fiber of pure cellulose in an economy friendly process as been proven by a life cycle assessment. The properties of a composite material are highly dependent on parameters like mechanical fiber properties, fiber diameter, quality of fiber dispersion and fiber matrix adhesion. Keeping these properties constant throughout the whole composite part is the factor to success. The diameter as well as the mechanical properties of TENCEL fibers is kept within a very narrow range thanks to the unique manufacturing process. It was shown that the fiber dispersion of TENCEL as well as the fiber matrix adhesion is better than for natural fibers.

Global Evaluation of Energy in Hybrid M-HTFC/MGT Systems in Cogenerative Arrangement

This work concerns the study of HSs （Hybrid Systems） that are made up of the integration of M-HTFC （Medium and High Temperature Fuel Cell） and MGT （Micro-Gas-Turbine）. Different typologies of hybrid systems are taken into account, which differ from each other in their plant layouts. The plants are considered in cogenerative arrangement. The aim of this study is to carry out an energetic analysis of the HS considered to obtain an analytical expression to depict the system operating in cogenerative arrangement. An energetic comparison among the systems analyzed based on some indexes is effected, which allows an evaluation of the plants performances in cogenerative arrangement. An energetic analysis is carried out, which is based on a ＂black box＂ depiction of the plant in which the components and the mutual interactions are highlighted. The fuel cell component of the plant is not analyzed as a black box, but each element that constitutes it, is elaborated as a subsystem.

Breaking the periodic arrangement of atoms for the enhanced electrochemical reduction of nitrogen and water oxidation

The development of cost-effective and highperformance electrocatalysts has been increasingly studied to mitigate upcoming energy and environmental challenges.Amorphization and heterointerface engineering have played significant roles in the rational design of electrocatalysts and modulation of their electrocatalytic activities.However,the synergistic effect between amorphization and heterointerfaces has been scarcely reported.As a proof-of-concept attempt,we develop amorphous FeMo(a-FeMo)electrocatalysts with an abundance of heterointerfaces that are composed of amorphous components and evaluate their electrocatalytic performances toward the nitrogen reduction reaction and oxygen evolution reaction(OER).Benefitting from the synergistic effect between the amorphous nature of the a-FeMo electrocatalysts,which offer a high density of active sites,and significant electron redistribution at the heterointerfaces,the electrocatalysts exhibit a high Faradaic efficiency of 29.15%,an elevated yield rate of 71.78μg_(NH_(3)) mg_(cat.)^(-1) h^(-1) with long-term stability at a potential of-0.1V vs.reversible hydrogen electrode and excellent electrocatalytic activity toward the OER.This study provides a promising and effective method for the rational design of low-cost heterogeneous catalysts with desirable efficiency,selectivity,and stability.