The objective evaluation of course teaching quality is not only a guarantee for high-quality university teaching but also a key basis for teaching reform in higher education institutions. This study explores a novel method to enhance the objectivity and generalizability of teaching quality evaluations and provide more accurate and comprehensive results for teachers and administrators. Unlike traditional post-quantitative evaluations based on student scores, peer reviews, or supervision feedback, and post-qualitative research relying on subjective data, this approach leverages the integration of “Brain Science and Education,” as well as “AI and Education.” Using EEG and eye-tracking data from students, this study focuses on attention as a core variable. It begins with single-factor analysis (EEG or eye movement) and progresses to a multimodal data fusion system to construct an objective evaluation model. After eliminating environmental interference, a strong correlation is found between EEG data, eye movement, and attention. While EEG reflects brain activity, attention judgment often requires self-reports, introducing bias. Eye-tracking offers real-time behavioral indicators but lacks physiological depth. Therefore, integrating EEG and eye movement data compensates for the temporal/ spatial limitations of single-source analysis. Integrating AI and computing technology maximizes the academic and practical value of brain data and supports more effective post-hoc evaluation integration. This approach enables student-centered, personalized course evaluations and targeted teaching reforms, promoting continuous improvement in higher education and the holistic development of students.

为了分析在爆炸冲击与侧向瞬时倾倒时,人体手臂机体内部的应力损伤效应,使用有限元建模方式,建立人体前臂应力损伤机制模型,通过在载荷面加载 106 N/m2 的冲击力,来分析体前臂应力作用时的传导机制.通过建模计算得出,粘弹性组织(皮肤、脂肪、肌肉)受到应力冲击时,应力会转化成位移的方式将能量释放出来,组织应力张量基本为0.刚性组织(骨骼)受到外界施加的能量无法转化成位移消散,导致骨骼处大量能量蓄积,骨骼处的应力张量最大.结论:在应力冲击中,粘弹性组织可以将应力能量转化成位移来实现能量消散,而刚性组织无法实现,从而导致在应力冲击中,骨骼的损伤是非常明显的.

The sleep loss (SL) are one of the important diseases that endanger the health of aging individuals. This study evaluated SL in aging individuals, and explored the relationship between age and the organic changes that affect brain and sleep. The causes of SL in aging individuals and its harmful effects on them have been outlined. To enable individuals in choosing a suitable way to sleep better, we also reviewed advantages and disadvantages of the existing sleep modulation based on lifestyle habits and drug and physical stimulation. We found the former as more suitable for patients with mild SL, while the latter may fail to achieve the desired effects and may even lead to the onset of new diseases. Therefore, it is proposed to use non-invasive electrical and magnetic stimulations to improve the sleep quality in aging patients.In this review, mechanisms of the two stimulation methods have been summarized. Through analysis, it was found that magnetic stimulation can induce neuronal action potential, which makes patients twitch, and equipment noise causes discomfort in the elderly during treatment. Comparative analysis of stimulation methods revealed that transcranial electrical stimulation (tES) is a considerably safe, convenient, non-invasive, and easy to operate method with few adverse reactions, and it can be considered a potential therapeutic method for SL in aging patients.

微型植入式医疗电子设备是一种长时间埋于人体,用于监测生理特征的微型医疗器械.为了研究微型植入式医疗电子设备如何利用电信号实现植入物与体表检测设备的通信,并分析信号传导机制,本研究利用数学建模的方法,通过设定合理的边界条件和假设,建立微型植入式医疗电子设备体导通信信道模型.为了验证体导通信信道模型的解的准确性,建立了等效的数值解模型,通过分析体导通信信道模型和数值解模型的结果,发现两种模型的误差小于1％.为了验证体导通信信道模型与实验结果的一致性,选用文献中的实验数据来进行验证,通过对比实验结果与体导通信信道模型计算结果,发现体导通信信道模型的解和实验结果误差小于4dB,具有良好的一致性.因此,体导通信信道模型的解是准确的,体导通信信道模型与实验也有较好的一致性.

为了了解四川省猪肉消费与供给变化的趋势、把握后疫情时期四川省生猪产业及猪肉市场的发展方向,基于四川省近年面板数据,从四川省的猪肉消费和供给能力的角度,采用描述性研究法,挖掘四川省猪肉消费状况和特征,简析猪肉消费波动原因,利用数据横向比较中国前五生猪主产区的年出栏量、年末存量和猪肉年产量.研究结果表明,四川省猪肉消费总量呈现周期性变化,城乡居民对猪肉消费表现积极,猪肉消费的城乡差距不明显.在猪肉替代品方面,禽肉的人均消费替代效应明显;供给能力方面,四川省猪肉供给能力较强,能够保障城乡居民消费.

This study investigated the effect of two surgical treatment schemes on complex proximal humeral fractures. We included 60 patients with complex proximal humeral fractures admitted to the People’s Hospital of Zhongjiang County, China, from May 2016 to May 2017. The patients were randomly divided into group A (30 cases; intramedullary nail fixation) or group B (30 cases; plate internal fixation) to compare the therapeutic effects. We used Neer’s scoring system to calculate an acceptability ratio and assess pain six weeks after surgery. The acceptability ratio was 80.0% in group A and 93.3% in group B, and the ratio did not differ between the groups ([Formula: see text]). In groups A and B, 56.7% and 50% of patients were without pain, respectively; this rate did not differ between the groups ([Formula: see text]). Our results indicate that both methods are suitable for treating complex proximal humeral fractures. However, in practice, surgeons should select the most appropriate treatment method based on the actual fracture to ensure the best postoperative outcome with the least amount of pain.

地方师范院校工科专业普遍存在师资薄弱,资源投入不足的问题,导致工科专业学生的动手实践与创新能力不足,无法达到"新工科"专业建设的培养目标.针对此问题,结合内江师范院物联网工程专业在办学过程中遇到的问题,分别从优化师资配置、校企合作共建课程、采用项目学习法教学、建立以解决问题为核心的评价标准等几方面进行改革.通过方案实施,学生的动手实践能力与创新能力得到了明显提升.

Objective: This study aims to analyze the clinical treatment effects of the minimally invasive percutaneous plate osteosynthesis (MIPPO) and multi-directional locking intramedullary nail (MDLIN) techniques in patients with distal tibial fractures. Methods: A total of 124 patients with distal tibial fractures, admitted to the People’s Hospital of Zhongjiang County from February 2019 to January 2020, were selected as the research subjects. They were randomly divided into groups ([Formula: see text]). The control group received MIPPO treatment, the observation group received MDLIN treatment, and the postoperative therapeutic effects and complications in the two groups were compared. Results: The patients in the observation group had shorter operative time and lower intraoperative blood loss than those in the control group ([Formula: see text]). The two groups had no significant differences in fracture healing time, complete weight bearing time, or functional recovery. The postoperative complication rate in the cases of the observation group was significantly lower than that of the control group ([Formula: see text]). Conclusion: Both techniques can achieve sufficient therapeutic effects; however, the MDLIN technique has certain advantages, including significantly fewer complications, lower intraoperative blood loss, and shorter operative durations compared to the MIPPO technique.

目的:基于电针的电化学治疗方法,通过向电针中注入直流电信号,利用电流弥散来实现对肿瘤细胞的电解、电渗作用,实现癌症的定向精准治疗,为了研究电针信号在手臂肌肉内的信号传导情况,为精准治疗提供理论依据.方法:结合人体解剖学与组织结构学,在COMSOL Multiphysics 5.5有限元仿真软件中,利用圆台、圆柱、椭球为几何实体,建立电针电化疗数值仿真有限元模型,并在频域环境下,通过注入载波信号为100 kHz、±20 mA的直流电信号,以此分析信号在手臂中的传播机制.结果:感应电势、电流密度分布主要集中在裸露电针头部周围,电势衰减约为11 dB/cm,距离较远时几乎检测不到通过电针注入的电流信号.结论:在精准电化疗肿瘤治疗系统中,传导距离越远,信号衰减越大,距离较远时,检测端几乎检测不到通过电针注入的电流信号,充分说明电针治疗几乎不会对离它具有一定距离(距离大小根据电针大小与注入电流情况而改变)的设备产生影响.

目的:为了有效分析电针治疗肌无力过程中,信号在机体内的扩散情况,提高信号阵列对于机体刺激的效果.方法:以中国数字人右手手臂影像数据集为数据基础,研发出用于分析电针理疗效果的有限元仿真几何结构模型.将模型导入到有限元仿真软件中,通过有限元建模的方法,建立电针理疗电信号传导理论模型,向电针的正负两极分别注入载波频率为1、2、5 kHz,幅度为±20 mA与-5 mA的电流信号,以此分析信号在手臂中的传播机制.结果:仿真分析发现,在正极附近产生最大为10 V的耦合电压,该电压对人体几乎是无害的,同时在正极周围会形成一个约1 cm半径的作用区域,该区域即为理疗的作用区域.同时通过分析手臂内轴线上的电势与电流分布发现,由于组织阻抗受频率增大的影响,组织电容效应越来越明显,耦合电势逐渐减小,但理疗关键因素的电流分布几乎不会受到影响.结论:刺激频率的增大会降低耦合电势且治疗效果不会受到任何影响,因此在后期治疗中,可以通过增加频率来降低耦合电势对人体的伤害.

目的:分析电子镇痛仪电流信号在手臂肌肉内的信号传导情况,为电刺激镇痛提供理论依据.方法:结合人体解剖学与组织结构学,在COMSOL Multiphysics 5.5有限元仿真软件中,利用圆台、圆柱、椭球为几何实体,建立电子镇痛仪数值仿真有限元模型.在频域环境下,通过注入载波信号分别为100 kHz、1 MHz、10 MHz,幅度为±20 mA的电流信号,以此分析信号在手臂中的传播机制.结果:随着载波频率的不断增加,集肤效应越来越明显,信号在电极接触处皮肤部分越来越集中,容积导体内部的扩散性也将失去一致性.在100 kHz时,随着离电极中心的通信距离逐渐增加,信号在手臂内部信号扩散变得越来越均匀.结论:在电子镇痛仪实施肌肉酸痛治疗过程中,通信频率越高,信号越难以进入机体内部,信号一致性越差.因此,在实施电流镇痛过程中,信号电极应尽量布置在镇痛靶向区域附近.

目的:研究经皮神经电刺激(TENS)在实施肌肉刺激时信号在内部的传导情况,为理想刺激提供理论依据.方法:以中国数字人为数据基础,先使用Mimics软件完成组织分割与三维建模;考虑到多物理场有限元建模软件只能使用几何实体,接下来使用Geomagic软件完成组织的实体建模,得到组织的几何实体;最后将获得的几何实体在COMSOL Multiphysics 5.5中建模,并在频域环境下,通过注入20 mA的直流电信号分析信号在手臂中的传播机制.结果:由于皮肤存在集皮肤效应,信号主要集中在电极以及电极与皮肤的接触处,分析位置离电极中心位置越远,人体手臂内部感应电势越小,并且感应电势逐渐变为正电势.在手臂内部,骨骼不传导信号,但骨骼形状及数量会影响电流密度分布的均匀性.结论:在基于中国数字人的TNES信号传导模型中,传导距离越远,信号衰减越大;内部组织结构越复杂,信号分布也越不均匀.

BACKGROUND: Tibial plateau fracture is a common fracture encountered in the clinic. OBJECTIVE: This study determined the optimal timing and surgical approach for patients with tibial plateau fracture. METHODS: Fifty-two patients with complex tibial plateau fractures were treated in our hospital (the People’s Hospital of Zhongjiang County) between 2013 and 2015. These patients were recruited as participants in this study; all patients were randomly allocated into two groups of 26 patients each. Patients in Group 1 underwent single-incision, single-plate knee surgeries via an antero-lateral approach, and patients in Group 2 underwent anterior median incisions of the knee for double-plate surgeries. The effects of the approaches were compared and analyzed. RESULTS: The best time to perform surgery was 6–8 days post-injury. The anterior median incision, double-plate method approach was better than the antero-lateral, single-incision, single-plate method. For the former method, the healing among middle-aged and young patients was better than that of elderly patients, and that healing of men was slightly better than that of female patients. However, the degree of healing among patients was > 80% at 5 months postoperatively. The purpose of surgical management has been fully achieved. CONCLUSION: The optimal timing of surgery for patients with complex tibial plateau fractures is 6–8 days post-injury. The surgical approach needs to be determined based on the actual condition of the patient. However, the treatment effect of an anterior median incision, double-plate method is better, and the recovery rate may approach 80% at 5 months postoperatively.

高校普遍存在实验室资源配置重复、使用率低、专业实训教师短缺等问题.文章借鉴欧洲"流动制"教学方式与经验,提出建立校际共享实验教学中心.该中心充分发挥各校的优势实验教学平台和资源,建立共享机制与互认机制,配备专业实训教师,如此便能让学生能够充分享用优秀教育资源,以大力提升大学毕业生社会竞争力和高校办学实力.

With the development of integrated circuits and microelectronics, integrated and miniaturized implantable medical devices are increasingly used in modern medical technologies, e.g., cardiac pacemakers, vasodilators, and cochlear implants. However, the normal operation of these devices is inseparable from the availability of sufficient energy supply and the bidirectional transmission of internal and external signals. Due to the limitation of the working environment of sensors, there is only a small space for most implanted electronic devices, which is a challenge faced by existing technology. In this paper, current wireless implantable energy supply and communication technologies are reviewed to determine the best available technologies, thereby providing a reference for method selection in designing implantable medical systems.

随着大数据向人工智能迈进的时代,仅能进行串口通信的低端芯片如何适应新的运动的智能场景,或使得老旧的设备再次重生,或高效的快速的研发新的设备,低成本的过渡将带来高的效益.文中设计基于GPRS的远程无线串口通讯系统.该系统主要包含电源模块、GPRS模块、CPU模块、存储器模块、显示模块、系统接口模块,经过硬件电路设计调试、软件程序设计,最终实现了直接使用串口命令便可向指定服务器进行无线数据传输的通讯系统,该系统硬件电路连接简便快捷,程序控制仍使用串口程序,节约开发时间,成本低,可以作为物联网设备的一种联网解决方案,在人工智能时代具有很好的使用价值.

"植入式医疗电子"是现代医学的一个重要组成部分.它以监测时间长,信号传输稳定,噪声小,可控性强而被现代医学广泛推广应用.为了实现这些功能,所有的"植入式医疗电子"必须与外界终端实现数据通信.电流耦合型人体通信因为信号稳定,噪声小,对机体损伤较小成为支持植入式通信领域的新的"无线通信"方式.为了研究植入式电流耦合型人体通信信道特性,本文基于麦克斯韦方程,建立了有源场单层人体通信信道模型并求出了柱心到源点与源点到表面的电势分布解析解.通过Matlab2010 b仿真得出了源点所在的圆柱面电势分布与圆柱表面电势分布,同时还得到在1 m范围内信号源到表面的信号衰减为2-26 dB,比其它两种无线方式都要小.

Objective: The aim of this research was to study the channel transmission characteristics of living and dead animal bodies and signal path loss characteristics of implantable communication in the axial direction. Methods: By injecting fentanyl citrate injection solution, we kept the research object (a piglet) in a comatose state and then a death state, so as to analyze the channel characteristics in each state. To analyze channel gain when using an implantable device with a fixed implantation depth and varying the axial distance, we proposed an implantable two-way communication path loss model. Results: Comparing the living-body and dead-body results showed that the channel gain difference was approximately 10dB for the same position and distance; heartbeat, pulse and breathing of the living animal contributed approximately 1dB of noise. Analyzing the calculated and experimental results of the path loss model showed that the determination correlation coefficients of the model were 0.999 and 0.998, respectively. The model prediction result and the experimental verification result also agreed closely. Conclusion: The path loss model not only fits the experimental results, but also has better predictability for those positions not measured.

植入式设备充电是保证植入式医疗系统长期、稳定、持续工作的重要组成部分.现有充电设备由于存在易感染、操作复杂、花费高以及会给患者带来二次伤害等问题,在使用中受到诸多限制.为了分析体导供电系统供电效能,结合计算机建模技术构建了传导模型,通过模型分析在1 kHz频率下该技术供电效能达到20.6％,完全满足系统充电.