Alternate Reality of the Lady of Shalott

The Lady of Shalott is considered to be one of Alfred Lord Tennyson’s masterpieces.The poem conversely demonstrates art and life,the aesthetic and the political,are fully interwoven:the involvement in the social world which is symbolically the destination of the Lady in the poem.The Lady who is the emblem of such an artwork can be ascribed qualities,for instance,self-containment,objectified otherness,removal from the fluidity of life,and participation in a higher order of existence,for which it is autonomy.Kermode points out that“the Romantic artwork often identifies itself with an emblematic image of autonomy and femininity”,inextricably interlinked.Her mirror shows her only“Shadows of the world”.The Lady’s web flies“Out”and floats“wide”when she“turns round”with“that desire of making an impression upon another mind”,when she seeks to address Lancelot.The mirror reconnects the Lady’s art to the real world beyond her window.Though the artist is unable to see it during the process of production,her artistic web,once out in a wider space than the tower and freed from the loom,is a true representation of outward things,the actions,and events of Camelot.This paper examines that the traditional referentiality of Tennyson’s‘The Lady of Shalott’can be better understood by supplementing the poet’s medieval sources,of little more than tangential relevance to the poem,with Homeric influences.The poem is similar to a fairytale,however,I have given an alternate reality of the Lady of Shallot in my version of a fairytale,where the characters remain the same but the fairytale takes a happy ending rather than a tragic death.My version is different from Tennyson’s since I believe the lady deserves to be jovial.Sir Lancelot was unaware of her fascination and feelings for him,as she could hardly express her feelings due to her imprisonment.She is so taken by him that she stops her work and looks at Camelot,though she risks the mysterious curse.The mirror breaks and her web magically floats out of the window on its own.She realizes that she is cursed.

Exergames： neuroplastic hypothesis about cognitive improvement and biological effects on physical function of institutionalized older persons

Exergames can be considered a dual task because the games are performed by a man-videogame interface, requiring cognitive and motor functions simultaneously. Although the literature has shown improvements of cognitive and physical functions due to exergames, the intrinsic mechanisms involved in these functional changes have still not been elucidated. The aims of the present study were（1） to demonstrate the known biological mechanisms of physical exercise regarding muscle adaptation and establish a relationship with exergames; and（2） to present a neurobiological hypothesis about the neuroplastic effects of exergames on the cognitive function of institutionalized older persons. These hypotheses are discussed.

Improving Balance through Virtual Reality and Physical Therapy Integration

Background and Purpose: Virtual reality (VR) is an innovative technology that shows promise in the assistance of physical therapy (PT). This case report explores the use of virtual reality with a patient suffering from unilateral vestibular hypofunction (UVH). Case Description: The patient is a 50-year-old male who was referred to physical therapy following a motor vehicle accident. The patient was diagnosed with having an acute left UVH, accompanied by reports of dizziness, imbalance and gait disturbances which impaired him from his work in construction. Intervention: The patient was seen two to three times a week for 40-minute sessions along with an individualized home exercise program. Interventions included vestibular rehabilitation exercises, balance training, gait training, and VR. The goals of VR were to provide task-specific simulations to improve postural balance, decrease anxiety through exposure therapy, and improve smooth eye pursuits to improve static balance. Outcomes: Outcomes used included subjective questionnaires such as the Activities-Specific Balance Confidence survey and the Dizziness Handicap Inventory (DHI) as well as functional tests like the Sensory Organization Test, Motor Control Test, and the Functional Gait Assessment (FGA). Outcome measures were performed at initial evaluation, at the 10th visit, and again at discharge. Notable improvements were seen on DHI and FGA scores. Conclusion: Dizziness, confidence, balance, and gait improved following vestibular rehabilitation combined with VR. Outcomes of this case suggest that virtual reality in conjunction with vestibular rehabilitation therapy is effective in improving deficits of unilateral vestibular hypofunction. Additionally, the use of VR in this case report suggests this can be an effective tool for intervention to facilitate patient-specific goals.

The Intrinsic Electron with Its Properties Such as Inner Structure and Self-Mass Is in Conflict with Quantum Field Theory

The quantum field theory (QFT) is one of branches of the Standard Model. According to QFT, quantum fields are the primary entities and particles are the excitations of these fields, coming in discrete lumps with no inner structures and with properties assigned by declaration. Such view is in conflict with the observed vacuum energy density, 140 orders of magnitudes less than required by the QFT. In addition, such view is challenged by Aphysical Quantum Mechanics (AQM), a deeper quantum theory. According to AQM, the fundamental understanding of quantum reality is expanded by the addition of two fundamental categories, aphysical and elementary consciousness of elementary particles. Based on AQM and as an example, the total ontology of the intrinsic (fundamental) electron is presented with its inner structure of perfect geometry consisting of the physical charged c-ring and aphysical cylinder, and with its properties such as self-mass, spin, magneto-electrostatic field configuration and magnetic moment. The position parameter in the inner structure demonstrates that there are no two identical intrinsic electrons in the Universe thus placing a question mark over the QFT principle of indistinguishability.

Laboratory Investigation of Disintegration Characteristics of Purple Mudstone under Different Hydrothermal Conditions

Disintegration of rock is one of the primary processes of soil formation and geomorphology and is affected considerably by water and heat.This study focused on the disintegration characteristics under laboratory conditions of typical purple mudstone from the Tuodian group of Jurassic red beds(J3t) in Tuodian Town,Shuangbai county,Yunnan Province of southern China.The fresh mudstone was subjected to alternating applications of water,heat and hydrothermal interaction during five treatments:wetting-drying(WD),saturation(ST),refrigeration-heating(RH),a combination of wetting-drying and refrigeration-heating(WDRH),and a combination of saturation and refrigeration-heating(STRH).Each treatment was run in twenty-four cycles.The results showed that there are three types of disintegration:collapsing disintegration,exfoliation disintegration and imperceptible disintegration.The cumulative disintegration rate(percentage of cumulative disintegrated mass to the initiative sample mass passed through a 2 mm sieve) produced a 'S'-shape function when related to treatment cycle time and closely fit a logistic model(R2 > 0.99).The rank order of the cumulative disintegration rate resulting from the five treatments was as the following:WDRH > STRH > ST > WD > RH.Because of alternating periods of moisture and dryness,WD caused the most disintegration,while RH alone resulted in imperceptible disintegration.Additionally,there was a negative correlation between the disintegration rate of each treatment cycle(percentage of disintegrated mass to the treated sample mass) and treatment cycle number.There was a positive correlation between this rate and temperature change under moist conditions,indicating that a change in temperature greatly accelerates the disintegration of parent rock when water was supplied.

Decreasing recurrent bowel obstructions,improving quality of life with physiotherapy:Controlled study

AIM To compare(1) quality of life and(2) rate of recurrent small bowel obstructions(SBO) for patients treated with novel manual physiotherapy vs no treatment. METHODS One hundred and three subjects(age 19-89) with a history of recurrent adhesive SBO were treated with a manual physiotherapy called the Clear Passage Approach(CPA) which focused on decreasing adhesive crosslinking in abdominopelvic viscera. Pre-and post-therapy data measured recurring obstructions and quality of life, using a validated test sent 90 d after therapy. Results were compared to 136 untreated control subjects who underwent the same measurements for subjects who did not receive any therapy, which is the normal course for patients with recurring SBO. Comparison of the groups allowed us to assess changes when the physiotherapy was added as an adjunct treatment for patients with recurring SBO.RESULTS Despite histories of more prior hospitalizations, obstructions, surgeries, and years impacted by bowel issues, the 103 CPA-treated subjects reported a significantly lower rate of repeat SBO than 136 untreated controls(total obstructions P = 0.0003; partial obstructions P = 0.0076). Subjects treated with the therapy demonstrated significant improvements in five of six total domains in the validated Small Bowel Obstruction Questionnaire(SBO-Q). Domains of diet, pain, gastrointestinal symptoms, quality of life(QOL) and pain severity when compared to post CPA treatment were significantly improved(P < 0.0001). The medication domain was not changed in the CPA treated group(P = 0.176).CONCLUSION CPA physical therapy was effective for patients with adhesive SBO with significantly lower recurrence rate, improvement in reported symptoms and overall quality of life of subjects.

Coalitional Game Based Joint Beamforming and Power Control for Physical Layer Security Enhancement in Cognitive IoT Networks

In this paper,the physical layer se-cure transmission in multi-antenna multi-user cogni-tive internet-of-thing(IoT)network is investigated,where the coalitional game based joint beamform-ing and power control scheme is proposed to im-prove the achievable security of cognitive IoT de-vices.Specifically,the secondary network consisting of a muti-antenna secondary transmitter,multiple sec-ondary users(SUs),is allowed to access the licensed spectrum resource of primary user(PU)with underlay approach in the presence of an unauthorized eaves-dropper.Based on the Merge-Split-Rule,coalitional game is formulated among distributed secondary users with cooperative receive beamforming.Then,an alter-native optimization method is used to obtain the op-timized beamforming and power allocation schemes by applying the up-downlink duality.The simulation results demonstrate the effectiveness of our proposed scheme in improving the SU’s secrecy rate and system utility while guaranteeing PU’s interference thresh-old.

Using Virtual Reality to Promote Physical Activity

The purpose of this research is to develop an immersive virtual fitness center as an intervention to promote physical activity and examine its impacts on users’ exercise plans and exercise behaviors. The virtual reality (VR)-based intervention includes three main features: enabling the users to control their avatar, personalizing the avatar to look the same as the user, and visualizing the positive consequences of exercising. We conducted an experiment to randomly assign participants to two treatment groups: experiencing either the self or another person losing weight because of exercising in the virtual environment. The findings demonstrated that the self-avatar group exercised more in the voluntary section than the other-avatar group. However, participants in the self-avatar condition perceived a lower level of sense of presence compared to participants in the other-avatar condition. Compared to people in the control condition who watched and followed the exercise from a workout video, those who exercised in the virtual fitness center, regardless of whether the avatar was based on the self’s image or another person’s image, planned to spend more time on exercising in the following week. Theoretical and practical implications for using VR technology to promote health-related behavioral change, and why personalization decreases perceived sense of presence in the virtual environment are discussed.

微晶磁性材料制备VR虚拟仿真实验的设计与实现

将虚拟仿真技术应用于磁学与磁性材料制备实验教学,设计了“一主线、四模块、四层次”的实验教学内容结构,建设了微晶磁性材料VR虚拟仿真实验项目.引入了唯象的教学思维,解决了原子磁矩和磁畴理论过于抽象的教学难题,1∶1还原了微晶磁性材料制备所涉及的设备和操作流程,解决了微晶磁性材料制备实验高成本、高危险的现实问题,弥补了高校物理实验教学中磁学相关实验较少的缺陷.

虚拟现实技术对维持性血液透析患者影响的Meta分析

目的评价虚拟现实技术用于维持性血液透析患者的效果分析。方法计算机检索Cochrane Library、PubMed、Embase、Web of Science、CINAHL、中国知网、中国生物医学文献数据库、维普数据库、万方数据库中关于虚拟现实技术用于维持性血液透析患者的随机对照试验和类实验性研究,由2名研究人员独立进行文献筛选和资料提取,根据纳入和排除标准进行评估,并进行交叉核对。采用RevMan 5.4软件对纳入的文献进行Meta分析。结果最终纳入文献7篇,共涉及315例患者。Meta分析结果显示,虚拟现实技术可以显著改善血液透析患者生活质量中的生理功能[MD=11.68,95%CI(5.38,17.98),P<0.01]、生理职能[MD=18.41,95%CI(9.93,26.89),P<0.01]、躯体疼痛[MD=8.75,95%CI(2.12,15.37),P=0.01]、一般健康状况[MD=9.23,95%CI(3.77,14.68),P<0.01]、精力[MD=11.90,95%CI(5.71,18.08),P<0.01]、精神健康[MD=19.14,95%CI(8.80,29.47),P<0.01];虚拟现实技术能够改善身体功能中的60 s内坐-站-坐次数[MD=4.61,95%CI(0.41,8.82),P=0.03]。结论虚拟现实技术能够改善维持性血液透析患者总体生活质量以及部分身体功能,但对抑郁的影响并不显著。

SF_(6)替代气体C_(4)F_(7)N/CO_(2)喷口灭弧性能分析

近几年,C_(4)F_(7)N/CO_(2)混合气体因为较低的温室效应和优异的绝缘性能受到广泛关注,但是C_(4)F_(7)N的电弧分断性能实验昂贵、费时,所以文中以SF_(6)和C_(4)F_(7)N/CO_(2)混合气体为研究对象,建立了在固定开距直流电源条件下的电弧模型。通过电弧累计能量和电导的计算结果分析SF_(6)和C_(4)F_(7)N/CO_(2)混合气体的灭弧性能,通过对径向温度、物性参数的分析和能量运输的计算分析SF_(6)和C_(4)F_(7)N/CO_(2)混合气体的换热机理研究。结果表明,C_(4)F_(7)N/CO_(2)混合气体的电弧特性比较接近SF_(6)气体,可以通过适当提高气压和C_(4)F_(7)N气体占比来提高C_(4)F_(7)N/CO_(2)混合气体的灭弧性能,C_(4)F_(7)N/CO_(2)混合气体的能量交换方式也和SF_(6)气体比较接近,说明C_(4)F_(7)N/CO_(2)混合气体有较好的灭弧性能,为其在SF_(6)替代气体断路器的应用提供参考。

混合可重构智能表面和人工噪声辅助的物理层安全通信

针对可重构智能表面(Reconfigurable Intelligent Reflecting Surface,RIS)辅助的物理层安全通信,该文设计了基于混合有源-无源RIS和人工噪声(Artificial Noise,AN)辅助的安全传输方案。考虑基站和RIS的功率约束以及RIS无源反射元件的反射系数恒模约束,以最大化系统安全传输速率为目标,构建基站发射波束成形、AN波束向量、RIS反射系数矩阵联合优化问题。使用交替优化(Alternating Optimization,AO)、权值最小均方误差(Weighted Minimum Mean Square Error,WMMSE)和半定松弛(Semi-definite Relaxation,SDR)算法,求解所构建的变量高度耦合的非凸优化问题。仿真结果表明,混合RIS辅助安全传输方案,能够有效提高系统的安全速率,与无源RIS相比,能够有效克服“双衰落”效应导致的安全速率降低,与有源RIS相比,具有更高的能量效率。

基于虚拟现实的炮弹拆解训练系统

炮弹分解操作繁琐且危险性较大,在日常开展炮弹拆解的实操训练,难度大,易出现误操作等情况。文章提出一种基于虚拟现实技术开发炮弹拆解模拟训练的设计思路,首先,根据真实拆弹操作流程,用游戏开发引擎Unity 3D工具设计三维仿真场景,用其物理特性,例如碰撞、重力和互动性,模拟真实世界中的物理行为,以确保用户在虚拟环境中进行的操作和互动具有高度逼真感。

高校体育专业人才培养的虚拟智慧平台构建探究

在如今数字化信息化的浪潮下,以ChatGPT、元宇宙、大数据、虚拟智能设备等为代表的主流高新技术的风靡,为高校体育专业人才培养模式的变革带来了新的契机。该文以此为切入点,深入考察当下主流信息技术的发展态势和技术特点,探析高校体育教学融入数字化信息化技术的可能性和挑战性,探索构建高校体育专业人才培养的虚拟智慧平台的基本框架,以期为高校体育专业人才培养数字化赋能提供有益参考。

虚拟现实技术在脑性瘫痪儿童青少年身体活动和健康中的应用:系统综述的系统综述

目的系统综述虚拟现实(VR)技术在脑瘫儿童青少年身体活动和健康领域的应用模式和健康效益的系统综述的相关研究证据。方法检索Pub Med、Embase、CINAHL、SPORTDiscus、Google Scholar、Psyc INFO和中国知网,收集并筛选2020年1月至2024年3月公开发表的VR技术在脑瘫儿童青少年身体活动和健康中应用的系统综述,根据PRISMA指南,报告VR技术应用于脑瘫儿童青少年身体活动与健康领域的技术模式和效益的相关证据。结果最终纳入8篇英文文献,来自中国、沙特阿拉伯、印度尼西亚和巴西4个国家,涉及5692例脑瘫儿童青少年,研究类型均为系统综述,主要来源于临床医学、治疗和临床风险管理、游戏和游戏化、身体移动治疗等领域期刊。研究对象年龄为4~18岁,健康状况为脑瘫,主要涉及痉挛性偏瘫和痉挛性双瘫。涉及的VR技术包括沉浸式环境模拟,交互式动感游戏化,虚拟训练和指导,基于人工智能的活动数据追踪与分析、动作捕捉和反馈、生物反馈集成和可穿戴技术应用,以及增强现实集成5种典型的技术应用模式。每次干预15~90 min,每周1~15次,干预强度为中等~剧烈,持续1~24周。VR技术在脑瘫儿童青少年身体活动领域的应用,提升了脑瘫儿童青少年参与身体活动的兴趣,增强了交互式活动的感受,通过与可穿戴技术、生物反馈技术和数据追踪技术的结合,能够实时监测、追踪、分析和反馈活动状况,改善身体功能和活动功能。结论沉浸式环境模拟、交互式动感游戏化等VR技术,可以提升脑瘫儿童青少年参与身体活动的兴趣和身体活动参与水平,改善身体素质和活动,促进行为健康,提高整体健康水平和生活质量。

基于虚实融合的多物理仿真高空应激诱发系统

针对目前高空作业人员初期训练手段较少、安全性不高等问题,研制一套虚实融合的高空应激诱发系统,系统由物理反馈、高空虚拟场景和多维数据传输等模块组成。对木板进行倾斜角度设计和静应力载荷仿真,在保障系统安全的前提下提升高空应激强度;构建迷雾粒子特效,消除高空虚拟场景边界线暴露问题,同时减少渲染内容以提高帧率;组织志愿者身穿智能衣采集生理数据,验证系统效果。结果表明,与其他高空应激范式相比,系统心理应激诱发程度较高,可用于高空应激测试训练与儿童防坠楼教育。

浅薄层特超稠油油藏冷热交替开采技术研究

针对浅薄层特超稠油油藏蒸汽吞吐开发初期面临的油层厚度薄、原油黏度高、蒸汽热损失大、吞吐有效期短等问题,提出了冷热交替大周期吞吐开发模式,有效改善开发效果。为此开展了浅薄层特超稠油油藏冷热交替开采三维物理模拟研究,结果表明:受顶底盖层热损失影响,蒸汽吞吐温度下降迅速,峰值产量较高,但单周期生产时间较短,约100 min;降黏吞吐可以降低吞吐井附近含油饱和度,提高产油速度,降低含水率,延长吞吐周期50 min以上;提高温度可以增强降黏剂的降黏效果,第二周期开始冷热交替改善效果优于第一周期,其生产时间延长60 min,含水率降低45%,周期采出程度提高1.7%。利用数值模拟方法优化了冷热交替的注入参数,建立了该技术的政策界限:最佳转冷热交替的时机为2~3周期,注入强度为0.02 t/m;适用的油层厚度小于8 m,原油黏度小于200000 mPa•s,含油饱和度大于0.6,渗透率大于1000 mD。

雄安新区的数字孪生变电站应用及探索

传统行业的传统生产方式,应该寻求更契合时代的数字解法。对于安全和成本的关键性场景,数字孪生技术具备打破时空界限的潜力,但研究依然不够深入。为探索数字孪生在变电站运检中的实用化应用,以雄安数字孪生变电站为案例,结合变电检修运维实际总结痛点问题,并提出成熟的数字孪生应该具备快速扫描建模,物理引擎底座、虚实双向交互的实用化能力。相关技术研究应紧扣标准化和实用化目的,在现有技术的基础上做迁移、延伸等适用化应用。数字孪生技术在变电站运检中潜力巨大,相关理论在各个领域已经存在应用,但实用性示范工程的落地化应用,仍需进一步的体系化研究和标准化研究。

虚拟现实在大学物理实验教学中应用的探索与实践

虚拟现实技术(Virtual Reality,简称VR)具有实时性、交互性、易扩充、不受空间限制等优点,为高校物理实验教学改革提供了一种新的思路,它能够很好地解决传统物理实验教学中存在的贵重物理仪器做不到、危险源实验不敢做、仪器损坏率高、仪器更新慢、实验原理抽象难理解等问题.采用VR和传统实验结合的混合教学模式,通过控制变量方式对受试学生进行分组调研分析,结果显示通过VR课前预习后进行仪器操作,实验仪器损坏率明显降低,学生可选实验增加后,明显提升学生学习兴趣,激发学生求知探索欲,同时学生实验课后测试成绩显著提高.

有源智能反射面辅助的无线安全网络能效优化

由于“双重衰落”效应,使得含有IRS系统的链路传输过程面临两段较大的链路损耗,为了解决该效应,引入有源IRS辅助系统安全。基于此提出了物理层安全领域下有源IRS辅助系统安全保密能量效率优化问题,并考虑用户保密速率约束、基站发射功率约束、IRS功率约束以及反射原件放大系数约束。为了解决该多变量耦合的非线性优化问题,采用交替优化技术、Dinkelbach方法、SDR技术联合处理。对比有源IRS、无源IRS以及无IRS辅助三种方案,仿真结果显示,所提出的有源IRS辅助方案能够达到更好的保密能效,从而使系统安全性得到保证。