我国高职教育经费投入：数据分析与政策建议     

郭艳梅  李中国 《教育学术月刊》2014,(11)

教育经费是高职教育培养高素质技能型人才的前提条件和基础保障。通过对近年我国高职教育经费投入数据的梳理与分析发现,我国高职教育经费投入存在经费存量小,来源结构不合理,区域间经费投入不均衡等问题。为此,需加大经费投入力度,拓宽经费来源渠道,统筹各省区经费投入等,以保障我国高职教育健康快速发展。  相似文献   

新农保实施中的农村居民参保意愿问题分析     

汤兆云  郭嘉儒 《华侨大学学报(哲学社会科学版)》2014,(2):137-144

福建省、河北省调查数据显示,农村居民养老保险意愿表现为"少缴多领",且在显著性为95%(99%)的水平下,通过了显著性检验。基于农村居民养老意愿的新农保政策完善建议主要有:(1)根据农村居民经济收入以及经济承担能力等具体情况,设置恰当的个人缴费档次;(2)继续加大政府财政补贴力度,使政府财政补贴达到省级财政总收入的一定比例,并根据财政收入的年增长速度适时进行动态调整;(3)将参保对象的养老金待遇与养老金替代率的高低以及农村居民最低生活保障水平综合起来进行动态考虑;(4)将参保对象缴纳的养老保险费转为一定时期的定期存款,增加参保人的养老金待遇收入。  相似文献   

Synthesis of polyketone by copolymerization of styrene and CO using carbon nanotube-complex Pd2+ catalyst     

郭锦棠  肖淼  王海霞  胡光 《天津大学学报(英文版)》2014,20(2):86-90

The dipping method was devised to deposit Pd onto carbon nanotube as supported catalyst(Pd/CNT) for the copolymerization of carbon monoxide(CO) and styrene(ST) towards the formation of polyketone(PK).The Pd/CNT was characterized by X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD) and high-resolution transmission electron microscopy(HRTEM).The construction and crystallization property of PK were evaluated by Fourier transform infrared spectroscopy(FTIR),13C-nuclear magnetic resonance(NMR) and XRD,respectively.The catalyst showed excellent activity and reusability in promoting the fabrication of PK.It can be recycled 14 times with the highest total catalytic activity of 4 239.64 gPK/(gPd·h) at Pd content of 8.63wt%.The results indicate that the prepared catalyst is effective to catalyze the copolymerization of CO and styrene.  相似文献   

Robust Adaptive Control Design for Rotorcraft Unmanned Aerial Vehicles Based on Sliding Mode Approach     

郭建川  鲜斌 《天津大学学报(英文版)》2014,(6):393-401

This paper presents a nonlinear robust control design method for a generic rotorcraft unmanned aerial vehicle（RUAV）. The control objective is to let the RUAV track some pre-defined time-varying position and headingtrajectories. The proposed controller employs feedback linearization process to realize the dynamic decoupling controland applies adaptive sliding mode control to compensate for the parametric uncertainties and external disturbances.The global asymptotical stability is proved via stability analysis. Compared with the cascaded controller, the proposedcontroller demonstrates a superior tracking performance and robustness through numerical simulation in the presenceof parametric uncertainties and unknown disturbances.  相似文献   

Design and Realization of InP/AlGaInAs Multiple Quantum Well Ring Laser     

谢生  郭婧  管坤  毛陆虹  郭维廉  齐利芳  李献杰 《天津大学学报(英文版)》2014,(6):402-406

Using beam propagation method(BPM), key optical design parameters of InP/AlGaInAs multiple quantum well(MQW) ring laser were numerically analyzed. The influences of waveguide dimensions, curvature radius and gap size on the coupling efficiency were discussed. An InP/AlGaInAs MQW ring laser with radius of 350 μm was designed and realized. The experimental results show that the designed device, lasing at 1 563.2 nm with side mode suppression ratio higher than 20 dB, exhibited unidirectional bistability between the clockwise and counterclockwise modes.  相似文献   

Shear behavior of novel prestressed concrete beam subjected to monotonic and cyclic loading     

余芳  姚大立  贾金青  吴锋 《天津大学学报(英文版)》2014,20(4):257-265

Prestressed steel ultrahigh-strength reinforced concrete (PSURC) beam is a new type of prestressed concrete beam, which not only has a considerable compressive strength attributed to the ultrahigh strength concrete, but also ensures a certain degree of ductility at failure due to the existence of structural steel. Five of these beams were monotonically tested until shear failure to investigate the static shear performance including the failure pattern, load-deflection behavior, shear capacity, shear crack width and shear ductility. The experimental results show that these beams have superior shear capacity, crack control ability and shear ductility. To study the shear performance under repeated overloading, seven PSURC beams were loaded in cyclic test simultaneously. The overall shear performance of cycled beams is similar to that of uncycled beams at low load level but different at high load level. The shear capacity and crack control ability of cycled beams at high load level are reduced, whereas the shear ductility is improved. In addition, the influences of variables including the degree of prestress, stirrup ratio and load level on the shear performance of both uncycled and cycled beams were also discussed and compared, respectively.  相似文献   

Energy Performance and Condensation Risk of DCDV System in Subtropical Hong Kong简     

贾捷  李慧玲 《天津大学学报(英文版)》2014,20(1):42-47

The combined use of dry cooling （DC） system and dedicated ventilation （DV） system to decouple cool-ing and dehumidification process for energy efficiency was proposed for subtropical climates like Hong Kong. In this study, the energy performance and condensation risk of the use of DCDV system were examined by analyzing its ap-plication in a typical office building in Hong Kong. Through hour-by-hour simulation using actual equipment per-formance data and realistic building and system characteristics, it was found that with the use of DCDV system, the annual energy consumption could be reduced by 54%in comparison with the conventional system （constant air vol-ume with reheat system）. In respect of condensation risk, it was found that the annual frequency of occurrence of con-densation on DC coil was 35 h. Additional simulations were conducted to examine the influence of different parame-ters on the condensation risk of DCDV system. Measures to ensure condensate-free on DC coil were also discussed.  相似文献   

Experimental study on dispersion coefficient of dredger fill in reclamation region     

赵林  郭华  朱德成  毛国柱  郑义 《天津大学学报(英文版)》2014,20(5):328-334

In order to satisfy the demand of land use, reclamation engineering has been undertaken in coastal cities for a long time. To study the contaminant transport in the reclamation districts, robust and accurate estimation of dispersion coefficient is essential. In this study, the continuous sodium chloride （NaC1） solution with constant concentration was introduced into the column filled with the dredger fill to get the breakthrough curves （BTCs）. Inverse error function method （IEFM） and CXTFIT program were used for estimating dispersion coefficient. Results showed that the difference between the dispersion coefficients estimated by IEFM and CXTFIT program was slight. The main reason was that the BTC was not strictly linear. IEFM performed poorly in the nonlinear area, while the CXTFIT performed well over the entire BTCs. Moreover, the dispersion coefficient of dredger fill was small. The dispersion property of dredger fill would result in the slow migration of contaminants in the dredger fill.  相似文献   

医学微生物学虚拟试验在实验教学中的应用     

杨致邦  徐晨  王毅  邓西川  刘佳 《实验室研究与探索》2014,33(10):46-49

根据实验教学的特点,用Photoshop等应用软件制作了"革兰染色法观察细菌形态和染色性"和"肠道病原菌的分离鉴定"两个网络虚拟实验。根据实验中学生需着重掌握的操作技术和易出错的操作环节设置障碍;根据学生需掌握的操作技术的重要性评分;设置后台自动记分和反馈意见。将制作的虚拟实验应用于实验课、学生课后复习、实验考核。学生和教师使用后普遍认为该虚拟实验能真实地展现实验的全过程,能帮助操作者记住实验操作的要点,有趣味性。用于实验考核与实际操作考核结果比较无显著差异(P0.05)。因此,医学微生物学虚拟试验软件应用于实验教学取得了较好效果。  相似文献   

对中小学体育教师评价三个基本问题的反思     

陈果 《江西教育学院学报》2014,(6):69-72

中小学体育教师评价的三个基本问题包括中小学体育教师评价的内容、评价的主体以及评价方法,即评价什么、谁来评价以及如何评价。在评价内容方面,可以从教师、学生以及师生关系三个维度来考察,学校应该根据其自身的实际情况,对不同维度赋予不同权重;在评价主体方面,应主张多元主体参与,建立以同行评价为主,学校领导、教师本身、家长、学生共同参与的教师评价制度;在评价方法方面,提倡多维评价,把定性评价与定量评价相结合,以质性评价统整量化评价,提倡科学化管理。  相似文献