高师学前教育专业声乐课的教与学

高等师范院校中学前教育专业的声乐课是一门极为重要的课程,这门课程的关键在于师生的合作过程,教与学双方同等重要。因此,我们只有将教师的教与学生的学有机的统一起来,才能及时发现问题和采取有效的教学方法,达到教与学双赢的目的。     

Academic dishonesty in higher education—a nationwide study in Taiwan

Academic dishonesty has been an important issue. However, only few researches had been done in Asian countries, especially a nationwide study. A sample of 2,068 college students throughout Taiwan was selected and surveyed on four domains of academic dishonesty, including: cheating on test, cheating on assignment, plagiarism, and falsifying documents. The major findings of this study were: (1) the prevalence rate for all types of dishonesty behaviors among college students in Taiwan was 61.72%; (2) the top five most practiced academic dishonesty behaviors in Taiwan are provided paper or assignment for another student, gave prohibited help to others on their assignment, copied others’ assignments, passed answers to other students, and copied from other students; (3) students’ attitudes correlated with behaviors in all four domains of academic dishonesty; (4) females reported less acceptable to and behaved less academic dishonesty behaviors than males; and (5) freshmen had more dishonest practices than other class ranks.     

城市滨水空间景观研究－江苏历史古城护城河的保护与利用的意义

滨水区是城市的核心，是城市特色形成的重要因素，护城河是江苏古城水系的特殊形态之一，随着工业化，城市化水平的提高面临新的抉择，护城河作为城市景观资源，生态资源的充分挖掘有助于改善城市环境与强化城市的个性，护城河水系的空间，聚居，景观，生态的良性互动能促进城市发展。     

光分组交换节点物理性能仿真

A graphical and visual simulation system for the study of optical packet switching(OPS)nodes is accomplished.With the simulation system,the effect on physical performance-bit error rate(BER)due to a variety of factors such as the crosstalk parameters of OPS nodes,number of cascaded OPS nodes,length of optical output buffer,traffic load and fluctuation of amplitude of optical signals are evaluated.Reliability of the simulation system is proved by the analytical results obtained in all the above cases.     

Self-assembly-induced luminescence of Eu3+-complexes and application in bioimaging

Design and engineering of highly efficient emitting materials with assembly-induced luminescence, such as room-temperature phosphorescence (RTP) and aggregation-induced emission (AIE), have stimulated extensive efforts. Here, we propose a new strategy to obtain size-controlled Eu³⁺-complex nanoparticles (Eu-NPs) with self-assembly-induced luminescence (SAIL) characteristics without encapsulation or hybridization. Compared with previous RTP or AIE materials, the SAIL phenomena of increased luminescence intensity and lifetime in aqueous solution for the proposed Eu-NPs are due to the combined effect of self-assembly in confining the molecular motion and shielding the water quenching. As proof of concept, we also show that this system can be further applied in bioimaging, temperature measurement and HClO sensing. The SAIL activity of the rare-earth (RE) system proposed here offers a further step forward on the roadmap for the development of RE light conversion systems and their integration in bioimaging and therapy applications.     

老年人握力与健康及体适能关系的国外研究现状

握力作为一项简单、无创的上肢肌肉力量测试指标而为人们所关注,越来越多的研究显示握力测试应用于临床也是适合的。这篇文献综述概述了在临床医学和流行病学领域里老年人握力的关联与预测,同时也描述了握力与体适能之间的关系。     

数字系统中的电磁兼容探讨

分析了对数字系统性能影响严重的噪声源--串扰噪声、反射、接地公共阻抗噪声等,提出了抑 制电磁干扰的有效措施.     

光分组交换节点中串扰特性的研究

The effect of queuing delay of output buffer on the crosstalk property in optical packel switching nodes in investigated.The relationship between crosstalk and buffer length is obtained.From the calculation and simulation results,it is concluded that the corsstalk power penalty predominantly depends on the buffer length,the longer the buffer,the greater the penalty,as well as the random range of the penalty.While comparing with the effect of queuing delay,the effect of random routing path delay takes very little proportion in the total power penalty.     

复合广义泊松过程的可加性

广义泊松过程常常出现在顾客成批到达或成批服务的排队问题中。已有文献运用概率母函数的方法证明了广义齐次泊松过程的可加性。在此基础上,该文运用特征函数的方法证明了复合广义泊松过程也具有与广义齐次泊松过程相似的可加性。     

促进我国对外直接投资的几点思考

世界经济格局发生了深刻的变化,以跨国投资和经营为特征的经济全球化发展已呈现锐不可挡之势。我们有必要,也有可能适时适量地推进对外直接投资,把我国企业的跨国投资和经营推向一个新阶段。