Physical, Psychological, and Social Health Impact of Temperature Rise Due to Urban Heat Island Phenomenon and Its Associated Factors

The Urban Heat Island Effect（UHI）has now become a commonly observed phenomenon worldwide.Indeed,it has become a significant environmental effect of urbanisation.In Malaysia,research results showed that UHI effects are very evident in several cities such as Kuala Lumpur and Putrajaya.UHI effect has long been observed to cause temperature of cities.

TIBETAN PLATEAU FIELD EXPERIMENT（TIPEX）AND STUDY ON THE IMPACT OF PHYSICAL PROCESSES OVER TIBETAN PL

ＴＩＢＥＴＡＮＰＬＡＴＥＡＵＦＩＥＬＤＥＸＰＥＲＩＭＥＮＴ（ＴＩＰＥＸ）ＡＮＤＳＴＵＤＹＯＮＴＨＥＩＭＰＡＣＴＯＦＰＨＹＳＩＣＡＬＰＲＯＣＥＳＳＥＳＯＶＥＲＴＩＢＥＴＡＮＰＬＡＴＥＡＵＯＮＧＬＯＢＡＬＣＬＩＭＡＴＥＡＮＤＤＩＳＡＳＴＲＯＵＳＷＥＡＴＨ...

Discussion on the Impact of“Shift System”Teaching Model of Physical Education on Students’Mental Health

The“shift system”teaching model of physical education is an emerging education model that aims to improve students’independent choice and personalized development.However,there are also some challenges in the practical application of this model.For example,there are mental health issues for some students including difficulty in adaptation,social interaction,high psychological pressure,etc.Based on this,this article analyzes the impact of the“shift system”teaching model of physical education on students’mental health and explores the optimization path of the physical education“shift system”teaching model in order to promote students’mental health and all-round development.

Tourist Attraction Development in Denmark and Its Impact on Regions

This paper presents an investigation on the definitions of different concepts within cultural, tourism and creative industries, and experienced economy. The statistical approach is used in this analysis, both relating to the data presentation and the application of the Danish regional model for the economic assessment of tourist attraction. The research aim of the paper is two-fold： firstly, to discuss and highlight the development of cultural and tourist attractions both at national and regional level; secondly to show that tourist attractions play an important role both in destination marketing and the economic contribution to the Danish regions. The paper describes the trends of cultural and tourist attractions in Denmark both in the economic terms and in terms of numbers of visitors at attractions. Tourist attractions have an effect on tourists＇ choice of their destination. The last part of the paper focuses on the case studies within which the economic impacts of tourist attraction on the regions are presented. The Danish inter-regional model is applied for analyzing the economic and employment effects of these tourist attractions. The conclusion is drawn in the last section.

Multiple Impact of Integrated Watershed Management in Low Rainfall Semi-Arid Region: A Case Study from Eastern Rajasthan, India

The agriculture in low rainfall areas of eastern Rajasthan, India is characterized by high risks from drought, degraded natural resources and pervasive poverty, food insecurity and malnutrition. In this region, water is the main limiting factor for upgrading rainfed agriculture. For such areas integrated watershed management is recognized as a potential approach for agriculture growth and rehabilitation of fragile and degraded lands. At Gokulpura-Goverdhanpura village in Bundi eastern Rajasthan, India an integrated watershed project was implemented using the holistic systems approach. This paper discusses the impacts of this watershed program on bio-physical, socio-economic, environmental and ecological parameters. Results indicate that due to watershed interventions the groundwater availability has substantially increased which brought changes in cropping patterns with high value crops. Significant increases in irrigated area, cropping intensity along with diversification of crops from traditional to commercial cash crops were recorded. The watershed program also significantly improved the socio-economic status of the watershed community. It has increased the income and reduced poverty of the people in the watershed. The watershed interventions generated good employment opportunities and significantly reduced the migration of both skilled and unskilled labor from the watershed village to urban areas. It has also improved the environmental quality and ecological status in the watershed. The watershed interventions increased the vegetative index or greenery, reduced runoff, soil loss, and land degradations and improved the bio-diversity in fragile ecosystems. Overall, the integrated watershed program at Gokulpura-Goverdhanpura provided resilience by ensuring continued and sustainable multiple outputs, besides soil and water conservation and other positive environmental effects.

NET IMPACT OF PHYSICAL INTERACTION MECHANISMS IN A COUPLED WAVE-TIDE-SURGE MODEL

The focus of this study is a coastal high-resolution (2′ X 2′ ) two-waycoupled wave-tide-surge interaction model, including three main physical mechanisms. Comparisons andanalysis of simulated and measured wave heights and sea level considered two moderate storm casesfor the Huang-he Delta coastal area. The effects of different physical mechanisms on wave heightsare mainly influenced by wave-current interaction, including radiation stress. Wave-age dependentsurface wind stress and radiation stress mechanisms in the coupling wave-tide-surge interactionmodel show positive impact on sea level, and the wave-current interaction bottom stress mechanismshows negative impact on seal level. The comprehensive effects of the three main physical mechanismsshow positive net impact on seal level and increase sea level by around 20cm for the stormsconsidered. Overall, the results we show that the wave heights and sea levels simulated by thecoupled wave-tide-surge model agree better with the measured values than uncoupled model results,particularly for peak storm conditions.

Effects of Physical Education on Campus Culture Construction

Physical education is an important part of campus culture of the body, it has become one of the main ways for modem college students to relax, and it has a positive impact on construction of campus culture. So attention to sports participation of college students and promoting college students actively to join in sports activities has become an important part of the construction of campus culture. Universities undertake the mission to train highly qualified personnel, it should guide students to participate in various forms of physical activity related to local conditions, and we establish certain style and taste of the campus culture. This paper aims to identify the impact of college students＇ physical conditions to construction of campus culture, so as to develop and improve the main sports participation consciousness of students in sport, we hope that we can comprehensively improve the quality of university education for better college students sports activities and to create a harmonious, strong campus culture.

Impact of Temperature Variation on Single-Event Upset of 40 nm Virtex-6 FPGA Irradiated by Protons

Field-programmable gate arrays(FPGAs)have now become prevalent in aerospace applications because of their high performance,reduced development cost,high logic density,and re-programmability.SRAM-based FPGAs,in particular,are become more attractive for space applications because its ability to reprogram many times as necessary in a very short period[1].In this paper,the single-event upset(SEU)response versus temperature for the 40 nm SRAM-based FPGA was characterized using different energy proton beams from 16 to 200 MeV.

一种新型引磁式磁流变阻尼器研究

针对特定结构限制下磁流变阻尼器工作性能的优化问题,在传统磁流变阻尼器的基础上设计了一种新型引磁式磁流变阻尼器,建立了磁场与流场耦合动力学模型;以输出阻尼力和动态可调系数为优目标函数,基于多目标遗传算法对该型磁流变阻尼器内部活塞进行了优化;建立了多物理场耦合模型并进行了仿真和冲击试验。仿真结果表明:在相同外形尺寸条件下,新型磁流变阻尼器的有效阻尼通道长度为64 mm,相比普通磁流变阻尼器提高了60%;新型磁流变阻尼器的力学特性与动态可调性更加优越,当施加2.0 A电流、活塞运动速度为0.09 m/s时,新型磁流变阻尼器的输出阻尼力为55.9 kN,相比普通磁流变阻尼器(32.4 kN)提高了72.5%;施加不同大小电流时新型磁流变阻尼器的峰值压力与吸能容量均明显高于普通磁流变阻尼器。冲击试验结果表明:当施加2.0 A的电流、冲击速度为2.45 m/s时,相比普通磁流变阻尼器,其峰值压力达到11.64 MPa、峰值压力提高约41%。峰值压力试验结果与仿真结果对比表明:仿真结果和试验结果的趋势是一致的,其相对误差在0.1之内,表明了仿真模型的有效性。

基于物理实验的典型透水铺装水文效应研究

为了研究典型透水铺装水文效应,设计研制了一套人工模拟降雨实验系统,经过降雨特性检验,对透水混凝土铺装和植草砖铺装进行了定雨强下渗实验和设计暴雨情景下降雨径流实验。结果表明,本实验系统可实现雨强自动连续变化,人工降雨与设计暴雨在降雨峰值、降雨总量和降雨过程上接近,模拟降雨效果较好。透水混凝土铺装初始下渗率较大,相比于植草砖铺装更早进入稳定下渗阶段,稳定下渗率也更小;植草砖铺装在充分供水条件下也可一定程度控制径流;Horton模型对于透水铺装下渗特性有较好的描述能力。透水混凝土铺装产流过程与降雨过程呈现较高相关性,相同重现期下透水混凝土铺装产流时间均早于植草砖铺装,且产流量大;在削减径流总量和径流峰值、延后径流峰值方面,植草砖铺装都表现更好。

高海拔地区宽级配泥石流冲击拦砂坝试验研究

在高海拔地区,由于山高谷深,坡表物质受物理风化严重,物源级配宽度范围大,泥石流的发育频率高,冲击力大,导致拦砂坝损毁严重。为研究高海拔地区宽级配泥石流对拦砂坝的冲击规律,以西藏地区发育的泥石流为原型,建立宽级配泥石流冲击拦砂坝的物理试验模型,选取泥石流容重、水槽坡度与泥石流固相最大粒径为变量,进行27组水槽试验,研究冲击力特征。结果表明:(1)宽级配泥石流在冲击拦砂坝过程中经历“冲击爬高、旋滚回流、堆积回淤”3个接触演化阶段,泥石流容重越小,爬高越大,冲淤过程的阶段性表现越明显;(2)拦砂坝的坝前冲击力随宽级配泥石流容重的增大而减小,在相同坡度和级配的条件下,容重越大,水流携带固体物源运动越困难,泥石流流速降低,泥石流的冲击力减小;(3)拦砂坝的坝前冲击力随沟槽坡度增大而增大,沟槽坡度越大,宽级配泥石流的流速和流深越大,泥石流冲击力就越大,并且泥石流固相粒径越大,坡度对冲击力的影响效果越明显;(4)拦砂坝的坝前冲击力随宽级配泥石流固相最大粒径增大而增大,且变化趋势较泥石流容重及沟槽坡度条件改变时更加显著,最大粒径与泥石流流速、流深没有明显规律关系。研究成果将为宽级配泥石流防治和研究提供一定的数据参考。

铝合金板阵列微结构零件电磁冲击液压成形研究

目的解决室温条件下因铝合金塑性流动不均而导致的零件开裂和尺寸偏差等问题。方法利用高速冲击提高材料成形极限以及流体均匀载荷精确控形的优势,提出了电磁冲击液压工艺并实现了铝合金阵列结构零件的成形,采用实验手段研究了放电电压和放电次数对零件贴模精度和厚度分布的影响。结果随着放电电压的增大,零件的成形深度增大。在单次放电8kV下,板料最大成形深度达到模具深度的97%,连续3次放电8kV后,零件通道填充率达到89.7%。建立了与物理实验模型一致的电磁-流体-结构的多物理场耦合仿真模型,发现冲击液体对板料施加的瞬态压强超过200MPa,板料最大变形速度达到40.5m/s。模拟得到的板料变形轮廓与实验结果一致,证明了多物理场耦合仿真模型的准确性。结论电磁冲击液压成形是一种新型的高速成形方法,能够实现铝合金阵列微结构零件的精确制造,为提高复杂薄壁难变形构件的成形性能和精度提供了新的技术手段。

单井抽出-处理-回渗循环技术修复效果关键影响因素研究

采用单井抽出-处理-回渗循环污染地下水修复技术(单井循环技术)原位修复石化场地三氯乙烯(TCE)污染地下水。采用室内试验和数值模拟相结合的方法,通过关键影响因素的不同情景设置,模拟修复过程中污染羽的时空变化情况,明确关键因素对污染物去除的影响。结果表明:修复1,2,3,4,5,6,13,20 d后,TCE去除率分别为27.29%、34.94%、43.65%、54.12%、66.47%、75.88%、91.76%和92.35%;含水层渗透系数(K)和抽出回渗量(Q)是TCE去除的关键影响因素,其中Q的影响较为明显;污染物去除率(r)与修复时间(t)、Q和K之间存在定量关系(r=22.5lnt+6.3ln(KQ)+2.30),推导出的定量关系表达式有助于指导实际污染场地应用时抽出回渗量的设计。

自媒体对大学生身体活动参与度的影响研究

该文采用文献资料法、问卷调查法和数理统计法,对在校大学生身体活动情况以及自媒体参与情况进行调查与分析,提升在校大学生身体活动参与度,帮助大学生提高体质健康水平。研究发现,近年来在校大学生BMI指数有所增加,大学生体质下滑仍是需要关注的重要问题;在校大学生身体活动参与度仍有不足,女生更为突出。在网络信息高度发达的今天,自媒体传播信息有着极强的影响力和发展空间,对人们的影响也在日益增强。在校大学生接触自媒体、参与自媒体程度高。通过接触自媒体,提升在校大学生身体活动参与度存在较大的可能性,对男生的影响效果较为显著,而对女生的影响效果并不显著。通过接触自媒体,提升在校大学生的身体活动参与度具有两面性,需要自媒体发布人、自媒体平台、学校和社会的不断努力,才能降低消极影响,提升积极影响。学校应将自媒体这一传播手段进行筛选,并应用于在校大学生体育课程和课余时间中,以提高其参与不同类型、不同形式的身体活动的积极性和参与度。

基于社会生态学模型的大学生体力活动研究进展

体力活动作为衡量身体健康的重要指标之一,对于大学生的成长与发展有深远的影响,适当的体力活动可降低肥胖、抑郁等发病风险。国内外研究表明,大学生体力活动状态不容乐观,因此,有必要对体力活动不足的原因进行分析。该文基于社会生态学模型理论,从个人因素、人际层面、组织层面、社区环境和政策因素5个方面分析大学生体力活动的影响因素,为促进大学生体力活动提供理论参考和建议,助力大学生健康成长。

工业打磨机器人机械臂运动偏离距离预补偿算法

随着机器人技术的普及,其在生活、工业和服务领域的应用广泛增加。在实际应用中,机器人执行加工作业任务时常受外部因素或系统误差影响,导致运动轨迹偏离预期路径,影响任务完成效果。文章旨在研究工业打磨机器人机械臂运动过程中因误差与物理因素偏离原定轨迹的问题,重点关注优化机械臂运动偏离距离补偿。研究包括使用局部加权法调整偏离距离,降低测量误差影响,同时提出物理影响函数,考虑转动惯量、动摩擦及离心力等物理条件因子对偏离距离影响。研究结果显示,打磨机器人机械臂加工圆角倒角时,偏离距离预补偿算法使偏离距离误差从初始未修正的约0.22~0.83 mm减少至0.02~0.34 mm,且偏离浮动幅度减少了约52.46%,对提高打磨机器人工作效率和减少偏离误差具有重要意义。

跨学科教学在高校体育课程中的价值与影响

新的教学改革涉及跨学科教学,将不同学科的知识和方法融合到体育教育中,以提升学生的身体素质、心理素质和社会适应能力。该文通过查找文献的方法,探讨了跨学科教学的理论基础、在体育教育中的价值、对体育课程的影响等,以为高校体育课程教学的开展提供理论指导。

低温暴露环境下运动对冰雪项目运动员体能的周期性影响

目的:探讨低温暴露环境对冰雪项目运动员体能周期性影响的变化规律。方法:以小鼠作为实验模型,在模拟的低温雨雪冰冻条件下进行实验,对小鼠进行为期7天的间断性暴露。观察小鼠间断性暴露在低温雨雪冰冻环境下的力竭游泳时间。结果发现:低温环境显著缩短了小鼠的力竭游泳时间(P<0.01),说明小鼠的体能受到了低温暴露的负面影响。然而,在间歇性暴露6天的小鼠实验组中,虽然力竭游泳时间有所恢复,但这种改善并不具有统计学上的显著性。本研究成果有助于掌握低温环境下小鼠的体能变化规律,可为探讨这些变化对冰雪运动员体能产生的影响提供实验支持。

放散式体外冲击穴位点对老年慢性颈痛病人疼痛程度、运动能力的改善作用

目的 探讨放散式体外冲击穴位点对老年慢性颈痛病人疼痛程度、运动能力的影响作用。方法 采用电脑随机数字表法将2020年1月至2021年1月中南大学湘雅三医院98例老年慢性颈痛病人,按照1∶1试验设计原则分为两组,各49例。对照组予以传统物理康复疗法,观察组予以物理康复联合放散式体外冲击穴位点,连续治疗15 d。观察比较两组临床疗效、不同时间点数字疼痛评分法(numerical rating scale,NRS)评分、颈椎功能障碍指数(NDI)、颈椎主动活动障碍、肌力和耐力、表面肌电信号及疼痛介质[前列腺素E2(PGE2)、P物质、神经肽Y(NPY)]变化。结果 观察组总有效率97.96%(48/49)高于对照组77.55%(38/49)(P<0.05)。治疗7 d、15 d观察组NRS评分分别为(3.00±0.49)分、(1.09±0.20)分,均低于对照组的(3.56±0.52)分、(1.78±0.36)分(P<0.05)。治疗7 d、15 d观察组颈椎功能障碍分别为(9.46±2.85)分、(5.12±2.10)分,颈椎主动活动障碍分别为(1.63±0.76)分、(0.58±0.32)分,均低于对照组的(12.10±3.10)分、(8.96±2.56)分,(2.10±0.53)分、(1.52±0.45)分(P<0.05)。治疗15 d观察组肌力、耐力分别为(29.63±3.12)mm、(35.98±2.56)s,均高于对照组(28.12±2.56)mm、(33.21±2.10)s(P<0.05)。治疗7d、15 d观察组血清PGE2、NPY、P物质水平均低于对照组(P<0.05);治疗15 d观察组22 mmHg、26 mmHg、30 mmHg气囊压力时表面肌电信号均低于对照组(P<0.05)。结论 放散式体外冲击穴位点有助于提高老年慢性颈痛病人疗效,减轻疼痛,改善颈椎功能和运动功能,增强肌肉肌力和耐力。

重复测量对滤棒物理指标影响程度分析

在生产及滤棒物理指标相关试验中需要对滤棒进行重复测量。为探讨重复测量滤棒对其物理指标的影响程度,分别对30组滤棒(每组10支)进行两次测量,每组样品两次测量间隔时间为7~240分钟。结果表明:重复测量对滤棒重量造成的损耗可以忽略不计;重复测量过程会导致圆周降低约0.05mm,测量后圆周向原状态逐渐恢复,一小时后圆周减小值趋于稳定,约为0.01~0.02mm;重复测量导致长度缩短约0.02~0.08mm,在地面放置柔软物缓冲可有效降低其缩小值;重复测量后吸阻升高0.4~2mmWG,推测其受重复测量圆周、长度变化因素影响。重复测量对圆度、硬度影响不显著。本文可为其他关于滤棒物理指标的研究提供理论支持,降低因重复测量导致的误差。