《盆地构造分析》课程建设与教学方法探索

《盆地构造分析》作为一门新开设课程,在诸多方面需要进行探索和建设。文章从教学内容、教学方法、考核方式、课程资源库以及课程设计等方面进行分析,提出了存在的问题以及对应的建设方案。目标是把该课程建设为一门理论和实践并重的课程。     

白桦根的木材解剖学研究

对白桦根次生木质部进行木材解剖学研究，发现其为散孔材，管孔多数为复管孔，少数为单管孔，为同形射线，导管分子穿孔板类型为梯状穿孔板，离析材料中韧型纤维丰富。     

Tunable polarization of high numerical-aperture objective with phase plate

The intensity distribution of depolarized field in the focal region of a high numerical-aperture optical system was investigated and found that the depolarization effect is tunable by the plate. The depolarization effect gains with the increase of the inner convergence angle of the phase plate, goes through a dramatic descent when the angle is larger than 30° and begins to come back when the angle reaches a threshold of respectively 60°and 65° for the orthogonal diffractive field and the longitudinal diffractive fields. This reveals two convergence points where the depolarization effect is the strongest and weakest, respectively, suggesting that the pure phase plate can be a promising method for altering depolarization diffractive fields and constructing optical instruments.     

论大学生板块式就业指导模式：内涵、特点及体系

当前大学生职业发展与就业指导教育针对眭不强,实效性不高,症结在于大学生职业发展与就业指导内容庞杂,缺乏有机的结构构建;职业发展与就业指导模式流于形式,忽视了大学生的就业实践活动。板块式就业指导模式借助大学生职业发展与就业指导课程内容及其体系的板块联系,具有丰富的内涵,呈现结构的板块性、目标的一致性、内容的渐进性以及板块...     

以产权交易市场为基础构建我国三板市场

在目前国内外建设多层次资本市场的大背景下,分析了我国多层次资本市场和成熟的多层次资本市场的差距,明确了我国构建三板市场的积极意义,提出了产权交易市场是我国三板市场的基础,研究了产权交易市场的功效和以产权交易市场为基础构建我国三板市场的路径.     

温度场中非线性弹性地基上矩形薄板的1/3次亚谐共振

为了研究温度场中非线性地基上矩形薄板受简谐激励的1/3次亚谐共振问题,应用弹性力学理论建立其动力学方程,应用Galerkin方法将其转化为非线性振动方程。利用非线性振动的多尺度分析方法求得系统1/3次亚谐共振的近似解,并进行数值计算。分析温度、地基系数、阻尼、几何参数、激励等对系统3次超谐共振的影响。得到了随参数变化响应曲线的变化规律。     

ERP沙盘对抗训练课程的原理与应用分析

从ERP的基本概念和应用原理入手,讨论ERP对于实现企业现代化的重要作用。分析ERP实训沙盘对抗训练课程在ERP教学中的应用方法和存在不足,探索出实践中对ERP沙盘对抗训练课程的改进方案。     

明清时期盘石营变迁考论

文章以位于黔东大地上众多屯堡之一——盘石城为例,经详实的史料和实地调查,提出：明代修建于苗疆的各类屯堡,自然发挥了镇压少数民族的桥头堡的功能,但从盘石城的变迁来看,它们更多的是中华民族多元一体民族格局形成的重要见证。它们从一个纯军事的堡垒,逐渐演变为在各个时期发挥调节民族关系、规范民族交往秩序、见证民族文化的冲突与交流的重要作用。     

Accuracy and precision of loadsol® insole force-sensors for the quantification of ground reaction force-based biomechanical running parameters

Force plates represent the “gold standard” in measuring running kinetics to predict performance or to identify the sources of running-related injuries. As these measurements are generally limited to laboratory analyses, wireless high-quality sensors for measuring in the field are needed. This work analysed the accuracy and precision of a new wireless insole forcesensor for quantifying running-related kinetic parameters. Vertical ground reaction force (GRF) was simultaneously measured with pit-mounted force plates (1?kHz) and loadsol^® sensors (100?Hz) under unshod forefoot and rearfoot running-step conditions. GRF data collections were repeated four times, each separated by 30 min treadmill running, to test influence of extended use. A repeated-measures ANOVA was used to identify differences between measurement devices. Additionally, mean bias and Bland–Altman limits of agreement (LoA) were calculated. We found a significant difference (p?® devices for these parameters. For these same parameters, the LoA analysis showed that 95% of all measurement differences between insole and force plate measurements were less than 12%, demonstrating high precision of the sensors. However, highly dynamic behaviour of GRF, such as force rate, is not yet sufficiently resolved by the insole devices, which is likely explained by the low sampling rate.     

一种新型板式换热器在轻工行业的应用

介绍了一种能利用低压二次蒸汽的新型板式换热器在味精厂的应用。该板式换热器以味精厂结晶罐的二次蒸汽作加热介质,冷水被加热后作锅炉入炉水之用。一方面充分利用了二次蒸汽的冷凝潜热,节省了加热入炉水的热能（节省了燃煤）,同时又减少了二次蒸汽直接用水冷凝后排放对环境产生的热污染,节能减排效果十分显著。