Curriculum Ideological and Political Teaching and Practice of Study Tour Course Design in Higher Vocational Colleges: A Case Study of Qingdao Preschool Education College

Curriculum ideology and politics are critical for colleges and universities to fulfill theirfundamental mission of fostering moral and intellectual development. Within this framework, professionalcourses serve as the primary vehicles for integrating ideological and political education. Specifically, inthe field of study tours, the Study Tour Course Design emerges as a pivotal component for actualizingthe educational objectives of such programs. To construct a robust ideological and political curriculum,it is essential to devise a comprehensive system that aligns with professional teaching standards, industrybenchmarks, and vocational skill requirements. This involves a thorough exploration of ideologicaland political elements within the curriculum, ensuring their seamless integration throughout the coursedevelopment process.

不同钢渣掺量AC-16沥青混合料性能研究

研究将钢渣应用于道路建设中的可行性和钢渣沥青混合料性能特点,揭示混合料性能随钢渣掺量不同的变化规律。将钢渣0%、25%、50%、75%掺量代替石灰岩集料制备钢渣沥青混合料,采用高温单轴贯入试验、低温劈裂强度试验、冻融劈裂强度试验、间接拉伸疲劳试验,分别针对不同钢渣掺量下沥青混合料的高温性能、低温性能、水稳定性与疲劳性能展开相应研究。试验结果表明,钢渣各项性能指标均满足规范要求,可以作为集料制备沥青混合料,掺加钢渣后沥青混合料各项性能均有不同程度提高。随着钢渣掺量的提高沥青混合料各项性能变化规律不同,建议钢渣掺量控制在50%左右,以达到沥青混合料综合性能最优。

我国me-too药物成功案例在药物设计学课程教学中的应用

高等医药教育担负着加快知识创新和医药人才培养的重大历史使命,随着我国药学相关学科的发展和药物研究开发战略由仿制向创新转轨,药物设计学已成为药学相关专业必修课之一。笔者尝试将我国重磅me-too药物作为案例运用到药物设计学课程的教学中,提高学生学习的积极性、主动性和创造性,开发学生的创造能力以及解决实际问题的能力。

情境视角下儿童农耕研学服务体验设计研究--以钱唐农园为例

针对传统农耕研学体验单一、家庭参与度弱、社会关注度低等问题,从设计视角重构农耕研学创新服务体系,探讨基于情境体验的农耕研学服务体验设计研究。在情境体验理论与用户体验设计相关方法的指导下,研究儿童、家长对农园情境的理性和感性认知,挖掘其需求痛点与期望,归纳整理出农耕研学服务体验的三大情境需求。从情境体验设计的角度提出满足儿童农耕研学服务体验的设计策略并进行设计实践。乐学乐教、智能情感、可持续性的情境体验符合儿童农耕研学的需求,以设计实践验证了情境体验设计方法的应用价值。

Preclinical in vivo research of magnesium-based implants for fracture treatment: A systematic review of animal model selection and study design

Background:Degradable magnesium implants are promising for clinical fracture treatment,providing less stress-shielding mechanical support and superior bone-strengthening benefits to traditional materials.The quality of preclinical research is essential for developing Mg implants;however,there are considerable variations in the model selection and study design in published studies,posing challenges for safe and effective clinical translation of lab discoveries.Objective:The purpose of this systematic review is to investigate the current progress on in vivo research of Mg implants for fracture treatment,focusing on model selection,Mg materials,implant design,methodological and analyzing techniques,aiming to provide comprehensive guidance for future preclinical research.Materials and methods:Pub Med and Embase online databases were searched to identify researches investigating Mg implants in animal models of fracture from 1960 to December 2019,using a combination of keywords:magnesium and fracture.Eligible studies were included without language restriction.Data extraction was conducted for qualitative analysis.Meta-analysis was not performed due to extensive heterogeneities among studies.Results:Twenty studies published from 2014 to 2019 were included.Publication information,animal model,methodological quality,implants preparation,and evaluation techniques were extracted.The methodological assessment revealed low to high risk of bias among studies.Both rodent and non-rodent species were selected,and the anatomical sites for inducing fractures included both cranial-facial and limb bones.Pure Mg and alloys with or without surface modification were evaluated,covering implant designs of both intra-medullary and extra-medullary fixation.Radiological and histological evaluations were commonly conducted.Conclusions:Published in vivo evidence confirmed the role of Mg-based implants in promoting fracture healing.However,considering heterogeneity in animal selection,implant preparation,and evaluation methods,there still lacks a standardized reference model.By analyzing the information extracted from included studies,the systematic review may facilitate planning and conducting preclinical research with translational perspective.

MATLAB App Designer在法布里-珀罗干涉实验中的应用

基于法布里-珀罗(F-P)多光束干涉原理,利用MATLAB设计了基于F-P干涉实验的可视化App仿真界面,不仅可复现F-P腔长、入射波长、透镜焦距等参数对F-P干涉图样的影响及实时动态展示,还可观察周围介质折射率、F-P腔折射率与干涉图样的关系,并能进行多波长分辨率和微小波长差测量实验的演示.这些直观形象的模拟结果展示,将有助于改善多光束干涉理论及实验教学效果.

Large Cohort Data Based Cost-Effective Disease Prevention Design Strategy: Strong Heart Study

Background and Objective: A multitude of large cohort studies have collected data on incidence and covariates/risk factors of various chronic diseases. However, approaches for utilization of these large data and translation of the valuable results to inform and guide clinical disease prevention practice are not well developed. In this paper, we proposed, based on large cohort study data, a novel conceptual cost-effective disease prevention design strategy for a target group when it is not affordable to include everyone in the target group for intervention. Methods and Results: Data from American Indian participants (n = 3516;2056 women) aged 45 - 74 years in the Strong Heart Study, the diabetes risk prediction model from the study, a utility function, and regression models were used. A conceptual cost-effective disease prevention design strategy based on large cohort data was initiated. The application of the proposed strategy for diabetes prevention was illustrated. Discussion: The strategy may provide reasonable solutions to address cost-effective prevention design issues. These issues include complex associations of a disease with its significant risk factors, cost-effectively selecting individuals at high risk of developing disease to undergo intervention, individual differences in health conditions, choosing intervention risk factors and setting their appropriate, attainable, gradual and adaptive goal levels for different subgroups, and assessing effectiveness of the prevention program. Conclusions: The strategy and methods shown in the illustrative example can also be analogously adopted and applied to other diseases preventions. The proposed strategy provides a way to translate and apply epidemiological study results to clinical disease prevention practice.

Exploration of nature-based biomimetic approach in landscape architectural design: parametric study of candelabra model design

This research provides an exploration of a biomimetic approach in the process of designing a candelabra model using linear shaped leaves of a Bell flower.The design process described in this research contains two steps:biological and geometrical.In the first biological step,a proper model for the creation of an urban element was found from nature in a Bell flower(Campanula persicifolia L.).The upper leaves of the selected plant,which are small with a linear spear and sharpening at the top,were chosen for the modeling process.The second step included applying two geometrical methods,i.e.,Voronoi diagrams and Delaunay triangulation.A geometrical leaf form of the selected plant species and the modeling process were obtained using aparametric modeling software,Blender.Using different Blender plug-ins and modifiers,Delaunay triangulation and Voronoi diagram were implemented by marking the starting points on the leaf form in the image data source,adjusting the Delaunay triangulation parameters,and creating Voronoi diagrams in which the Voronoi points were located at the shortest distance from the edges of the Voronoi polygon.Consequently,a three dimensional model of a candelabra was developed through this study.

Study On Pattern Design of Men's Tailored-suit Sleeve

Sleeve pattern design of men’ s tailored - suit is one of the most difficult problems of clothing pattern design. Based on the experimental studies of armhole girth, the difference of armhole width and crown height, crown angle, under sleeve curve’s diagonal line length, crown ease and its distribution rule, this paper mainly deals with the sleeve pattern design of tailored - suit for Chinese men. The influences of these factors are discussed and furthermore, some qualitative, quantifiable conclusions are drawn to design perfect pattern of men’ s tailored - suit sleeve.

基于性别理论的首饰设计研究--以“性别含混化”为例

二十世纪六十年代,女性主义思潮的出现促使男女性别平等、含混的观念在文学、戏剧、美术等领域涌现,进而引发艺术领域的创作思维模式变得更加丰富。基于此背景,“性别含混化”逐渐成为人们重视的概念及社会现象,为艺术创作带来了一个全新且独特的研究视角。与此同时,这也为性别研究提供了理论契机,其理论随着女性主义的流派发展而丰富,但是涉及的实践研究略为单薄。文章基于性别研究(Gender Study),将“性别含混化”观念与理论与当代首饰创作实践相结合,意在给首饰设计带来新的研究视角、表现形式与媒介,拓宽首饰的创作思维,使首饰语言更加多元化。

Design and compilation of urban geomorpholo-gical maps——A case study in Chongqing city

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极地低温下GFRP管-混凝土短柱循环轴压性能

为了推广GFRP管-混凝土柱在极地基础设施建设中的应用,开展了14个GFRP管-混凝土短柱在极地低温环境下的轴压试验,主要研究参数为温度和GFRP管的径厚比.试验结果包括试验现象与破坏模式、荷载-应变曲线、塑性应变、刚度退化和耗能能力等.试验结果表明:所有试件破坏模式均为GFRP管环向撕裂,发生脆性破坏;单调加载下组合柱的荷载-应变曲线与循环加载下组合柱的荷载-应变曲线的包络线基本吻合,但循环荷载作用下组合柱的极限荷载和峰值应变略低于单调荷载作用下的组合柱;随着温度的降低,组合柱的极限荷载逐渐增大,峰值应变逐渐减小;循环荷载作用下,GFRP管-混凝土短柱的塑性应变与卸载点应变呈线性关系,且温度影响不大,混凝土强度是影响两者关系的主要因素;随着竖向应变的增大,GFRP管-混凝土短柱的刚度逐渐降低,且降低速率逐渐减小;GFRP管-混凝土短柱的等效黏滞阻尼系数逐渐增大,且增大速率逐渐降低.综合以上分析,采用“最远点”法确定GFRP管-混凝土短柱的名义屈服点,并提出了GFRP管-混凝土短柱在低温下的设计方法和设计流程,分别从强度、变形和GFRP管利用率3个角度来衡量试件设计的安全储备,为GFRP管-混凝土短柱在极地低温环境下的安全设计提供参考,保障其在极地和寒区环境的服役安全.

An Observational Study of the 30-50 Day Atmospheric Oscillations Part I: Structure and Propagation

Features of structure and propagation of the 30 to SO day atmospheric oscillations are investigated using the ECMWF analysis of 1980-1983. Evidence is provided to confirm the characteristics of the oscillation in the equatorial region. Those in the mid-high latitudes, however, are revealed to be very different from the tropics and pose a strong barotropic structure. Horizontal coherence shows teleconnection patterns which can be identified as EAP and PNA. The wind field of the specified time scale of the oscillation appears as long-lived vortices and vortex pairs. Mid-latitude perturbations propagate clearly westwards, especially during the winter season. In the high latitudes, they propagate westwards in the winter but eastwards in the summer. Meridional propagations are rather different from region to region.

Potential Toxicological and Cardiopulmonary Effects of PM2,5 Exposure and Related Mortality:Findings of Recent Studies Published during 2003-2013

Air pollution has environmental issue owing become a serious to its diverse harmful effects on the physical and biological environment. According to the Environmental Protection Agency （EPA） and the World Health Organization （WHO）, air pollution affects millions of people worldwide. Hundreds of thousands of deaths each year and a range of diseases, particularly among vulnerable groups （i.e., children, the elderly, and people with special medical conditions）, are attributed to air pollution. These effects are not always caused by single pollutant in the air; rather, they are considered consequences of the multi-pollutants to which people are simultaneously exposed.

Optimization Study on a Single-cylinder Compressed Air Engine

The current research of compressed air engine（CAE） mainly focused on simulations and system integrations. However, energy efficiency and output torque of the CAE is limited, which restricts its application and popularization. In this paper, the working principles of CAE are briefly introduced. To set a foundation for the study on the optimization of the CAE, the basic mathematical model of working processes is set up. A pressure-compensated valve which can reduce the inertia force of the valve is proposed. To verify the mathematical model, the prototype with the newly designed pressure-compensated intake valve is built and the experiment is carried out, simulation and experimental results of the CAE are conducted, and pressures inside the cylinder and output torque of the CAE are obtained. Orthogonal design and grey relation analysis are utilized to optimize structural parameters. The experimental and optimized results show that, first of all, pressure inside the cylinder has the same changing tendency in both simulation curve and experimental curve. Secondly, the highest average output torque is obtained at the highest intake pressure and the lowest rotate speed. Thirdly, the optimization of the single-cylinder CAE can improve the working efficiency from an original 21.95% to 50.1%, an overall increase of 28.15%, and the average output torque increases also increases from 22.047 5 N · m to 22.439 N · m. This research designs a single-cylinder CAE with pressure-compensated intake valve, and proposes a structural parameters design method which improves the single-cylinder CAE performance.

Numerical study on three-dimensional flow field of continuously rotating detonation in a toroidal chamber

Gaseous detonation propagating in a toroidal chamber was numerically studied for hydrogen/oxygen/nitrogen mixtures. The numerical method used is based on the three-dimensional Euler equations with detailed finiterate chemistry. The results show that the calculated streak picture is in qualitative agreement with the picture recorded by a high speed streak camera from published literature. The three-dimensional flow field induced by a continuously rotating detonation was visualized and distinctive features of the rotating detonations were clearly depicted. Owing to the unconfined character of detonation wavelet, a deficit of detonation parameters was observed. Due to the effects of wall geometries, the strength of the outside detonation front is stronger than that of the inside portion. The detonation thus propagates with a constant circular velocity. Numerical simulation also shows three-dimensional rotating detonation structures, which display specific feature of the detonation- shock combined wave. Discrete burning gas pockets are formed due to instability of the discontinuity. It is believed that the present study could give an insight into the interest- ing properties of the continuously rotating detonation, and is thus beneficial to the design of continuous detonation propulsion systems.

An Observational Study of the 30-50 Day Atmospheric Oscillations Part II: Temporal Evolution and Hemispheric Interaction across the Equator

In this part, the temporal evolution and interaction across the equator of 30-50 day oscillation in the atmosphere are investigated further. The annual variation of 30-50 day oscillation is quite obvious in the mid-high latitudes. In the tropical atmosphere, the obvious interannual variation is an important property for temporal evolution of 30-50 day oscillation. The low-frequency wavetrain across the equator over the central Pacific and central Atlantic area, the movement of the long-lived low-frequency system across the equator and the meridional wind component across the equator will obviously show the interaction of 30-50 day oscillation in the atmosphere across the equator.

Experimental Study on Momentum Transfer of Surface Texture in Taylor-Couette Flow

The behavior of Taylor-Couette （TC） flow has been extensively studied. However, no suitable torque prediction models exist for high-capacity fluid machinery. The Eckhardt-Grossmann-Lohse （EGL） theory, derived based on the Navier-Stokes equations, is proposed to model torque behavior. This are the significant energy theory suggests that surfaces transfer interfaces between cylinders and annular flow. This study mainly focuses on the effects of surface texture on momentum transfer behavior through global torque measurement. First, a power-law torque behavior model is built to reveal the relationship between dimensionless torque and the Taylor number based on the EGL theory. Second, TC flow appa- ratus is designed and built based on the CNC machine tool to verify the torque behavior model. Third, four surface texture films are tested to check the effects of surface texture on momentum transfer. A stereo microscope and three-dimensional topography instrument are employed to analyze surface morphology. Global torque behavior is measured by rotating a multi component dynamometer, and the effects of surface texture on the annular flow behavior are observed via images obtained using a high-speed camera. Finally, torque behaviors under four differentsurface conditions are fitted and compared. The experi- mental results indicate that surface textures have a remarkable influence on torque behavior, and that the peak roughness of surface texture enhances the momentum transfer by strengthening the fluctuation in the TC flow.

Applying“First Principles of Instruction”as a Design Theory of the EFL Classroom:Findings from an Empirical Study

How to benefit the learners learning English as a foreign language(EFL)from the aspect of instructional design aroused the concerns of many teachers and researchers.The main purpose of this study is to address the question of how teachers can design and implement EFL classroom that benefit the learners.Specifically,the“First Principles of Instruction,”advocated by Merrill(2002),was applied by the English teachers to conduct their day-to-day pedagogical practices.The corresponding effects of this theory in designing EFL classroom activities were reported in this study.Two research questions are formulated as follows:(1)Does the“First Principles of Instruction”benefit the EFL classroom designing in the aspect of student achievement?If yes,what is the effect?(2)How do the English teachers perceive the“First Principles of Instruction”to design EFL classroom?While observing the EFL classroom activities and interviewing the college English teachers,an empirical study was done to perceive how college English teachers could best apply these principles to design EFL classroom activities.

STUDY ON THERMAL EXPANSION COEFFICIENT AND DESIGN FOR ZERO－EXPANSION OF SlNGLE AND HYBRID MULTI－DIRECTIONA

AbstractThermal expansion properties of single and hybrid multi-directional composites fromr.t. to 150℃ are studied. The theoretical formulae for predicting coefficient of thermal ex-pansion (CTE) value are established. In the experiments, carbon/glasa andcarbon / Keviar are accepted to be the hybrid form. The variation of CTE values of hybridcomposites with structure parameter is analyzed. Besides, hybrid composites with zeroCTE arc studied and designed. And some typical ply forms of laminates with zero CTE arepresented. The investigation shows that it is easier for hybrid multi-directional compositesto meet the requirements of zero-expansion.