应用激光活化饵料藻种的研究

应用Nd:YAG激光(波长1.06μm,功率5w,照射时间0.5-3 min)和Ar+激光(波长488nm,功率70mw,照射时间5-15min)对长期保存的不同保存形式的塔胞藻(Pyramidomonassp.)进行辐照处理。研究了不同剂量激光辐照对藻体生长和叶绿素含量的影响。实验结果表明:照射剂量为60s的Nd:YAG激光及剂量为15min的Ar+激光对液体保存形式的藻种有较明显的促长效果,接种后这两种激光处理组的比生长速率分别较对照提高达53.33%和28.89%,叶绿素含量分别增加73.33%和65.69%。两种激光对液体保存藻种的活化效果均好于固体保存种。     

基于虚拟现实的恐惧测量模型建立

恐惧程度的客观评价在心理健康评估和职业能力评测中具有重要的作用。在沉浸式训练过程中,生理和运动数据有助于提升交互界面设计,增加虚拟训练的安全性。文中使用头戴式VR系统HTC Vive实现沉浸式VR体验,利用OpenVR开源软件包采集控制器和头部的位置信息,并结合Equivital belt EQ02 Lifemonitor所采集的心电信号、躯体加速度实现多种信号的特征提取。文中使用递归特征消除的特征排序方法和支持向量回归从50个生理及运动特征中选取了10个特征。基于自测恐惧值和特征的多元多项式回归实现了准确率为90%的二分类,即完成了对受试者恐惧或者非恐惧的分类。     

A Bioinspired Wireless Epidermal Photoreceptor for Artificial Skin Vision

Skin vision can be found in many invertebrates, such as earthworms, jellyfish, and octopuses using light‐sensitive rod cells in the skin. It enables optical perception and colorimetric responses, providing intriguing capabilities that human skin does not have. A bioinspired wireless, battery‐free, artificial skin vision (ASV) device consisting of flexible optical and optoelectronic components which essentially mimic the hierarchical structures and biological functions of rod cells in a skin‐like configuration for light sensing and signal processing is developed. The ASV device can collect sweat with integrated microfluidic channels and allow real‐time measurement of on‐skin fluids by monitoring the intrinsic optical properties via a customizable microprism light filter. The device also shows sensitive colorimetric responses to input stimulus at chosen detection wavelengths and demonstrates a capacity for in situ quantitative analysis of biomarkers in sweat through alternative colorimetric light filters. Multiple ASVs together create a body area network with a collection of wireless sensors that can work in parallel to acquire multidimensional human physiological signals and predict fitness variations using a specified deep learning neural network. The system has potential applications in biomimetic engineering, physiological monitoring, and intelligent personalized diagnostics.     

Privacy management of patient physiological parameters

Patient Physiological Parameters (PPPs) seem to be the most extensively accessed and utilized Personal Health Information (PHI) in hospitals, and their utilization by the various medical entities for treatment and diagnosis creates a real threat to patient privacy. This study aims to investigate whether PPPs access in a hospital environment violates patient privacy. If so, to what extent can we manage patient privacy while accessing PPPs in this environment? We investigated this question by analyzing questionnaire-based data from two Asian countries: Group A (China) and Group B (Pakistan). For data collection, we targeted those medical entities which were directly dealing with PPPs in their routine tasks. Results suggest that patient type directly influences the collection of PPPs: Group A (one-time?=?1.9, follow-up?=?1.06) and Group B (one-time?=?2.0 and follow-up?=?1.9). Both groups agreed that patients have the right to control their own PPPs. In both, doctors are the most trusted entity: for Group A, the Pearson Chi-Square with one degree of freedom is 1.414, p?=?0.234, whereas for Group B, the Pearson Chi-Square with three degrees of freedom is 4.511, p?=?0.11. Most of the Group A entities (92%) are familiar with unauthorized access of PPPs, while in Group B the level was only 35%. In Group B, only 35% of entities stated the purpose, specification and use limitations of PPPs. Doctors in both groups showed a high utilization of PPPs read authorization rights. This empirical evidence about PPPs usage in both countries will benefit health technology and improve policy on patient privacy.     

警务视频实战应用系统设计

随着科技不断发展,我国的公共安全领域也在不断加强科技化水平改革,使用更好的科技产品进行工作辅助,为社会稳定,人们生活安全提供保障。警务视频实战应用平台就是综合应用多项先进技术的科技辅助平台。本文通过笔者多年的公安工作经验进行需求分析,并对警务视频实战应用平台进行功能分析,对如何使用该平台更好的开展警务工作并提出一些建议,望与业内同仁交流学习,能更好的促进视频技术在公共安全领域发光发热,提高公安指挥调度的信息化水平。     

儿童情绪监测与情感电生理参数采集系统的研究

针对儿童情绪监测与情感识别的需要,设计了一套便携式儿童情感电生理参数采集系统,主要包括人体心电和体温信息的获取与处理.采集的数据通过蓝牙模块传输到计算机,计算机实时地处理数据并把信息展现给分析者.介绍了便携式儿童情感电生理参数采集系统的设计方案以及利用情感电生理参数监测与判别儿童情感的方法.     

图像监控系统与SCADA系统互联实践

根据黑板模型设计了图像监控系统与监控和数据采集（SCADA）系统互联的基本模型。在图像监控系统与SCADA系统之间建立接口，使图像监控系统可以利用SCADA系统转发的远动数据，从而实现对SCADA系统的联动。提出了系统互联的软件和硬件实现方案，讨论了系统互联的关键性技术。结合山西某供电公司的工程实际，设计了具体技术方案，并以模拟屏通信协议为例说明了系统互联的软件实现过程。     

新型转向梯形机构运动模型及其优化设计

前置组合式转向梯形机构具有布置灵活、传动可靠等优点，但机构复杂、设计困难。本文从运动分析入手，建立了优化数学模型及算法，开发地优化设计软件系统。并给出了设计分析实例     

植物多糖的研究现状

本文介绍了植物多糖的提取和分离方法,综述了植物多糖的生理功能,包括抗病毒、抗肿瘤、降血糖、降血脂,免疫调节,抗氧化及一些其他功能,并对植物的应用前景和研究方向作了展望。     

中关村长三角创业产业园项目的设计理念和设计策略

设计理念是项目最初的立意,设计策略则是实现立意的必要手段,理念决定高度,策略决定实现的程度与效果。项目是否成功同时取决于设计理念和设计策略两个方面。本文以中关村长三角创业产业园项目为例,探讨了从理念到策略的实践。