嵇康《声无哀乐论》的音乐思想简论

<声无哀乐论>所涉及的音乐美学问题很多,但主要包含相互联系的两层含义其一是说音乐的本体是来自外在的自然,因而不包含哀乐之情;其二是说人们在倾听音乐时之所以产生哀乐之情,这并非音声使然.音乐与情感各自独立,但是在对应的关系层面上两者产生了关系,这使得音乐与情感的关系出现多种不同的现象,声无哀乐和声有哀乐都有其合理的一面,由此可以看出嵇康论述音乐与情感关系的全面性与科学性.     

基于PSB的高频开关电源的仿真分析

分析了采用Buck变换器的PWM控制的开关电源的仿真问题,并利用PSB建立了一个离散的、非线性开关电源模型.通过在仿真模型中修改电路参数,可方便地进行系统的优化设计,而且可以部分地替代硬件实验,极大提高开发效率.     

Public and private value creation using artificial intelligence: An empirical study of AI voice robot users in Chinese public sector

Despite significant theoretical and empirical attention on public value creation in the public sector, the relationship between artificial intelligence (AI) use and value creation from the citizen perspective remains poorly understood. We ground our study in Moore’s public value management to examine the relationship between AI use and value creation. We conceptually categorize public service value into public value and private value. We use procedural justice and trust in government as indicators of public value and, based on motivation theory, we use perceived usefulness and perceived enjoyment as indicators of private value. A field survey of 492 AI voice robot users in China was conducted to test our model. The results indicated that the effective use of AI voice robots was significantly associated with private value and procedural justice. However, the relationship between the effective use of AI and trust in government was not found to be significant. Surprisingly, the respondents indicated that private value had a greater effect on overall value creation than public value. This contrasts with the common idea that value creation from the government perspective suggests that social objectives requiring public value are more important to citizens. The results also show that gender and citizens with different experiences show different AI usage behaviors.     

音箱的布局对空间声场的影响

论述音箱的选用和布局对空间声场分布的影响。     

影响英语语态选择的因素

英语语态的选择涉及多方面的因素,因为语态的变换会改变句子的语义中心、影响上下文的衔接或语域等。本文将就语义、语篇、语域等对语态选择的影响进行探讨。     

美国的品德教育及其启示

美国德育的发展、目标、内容、方法、途径和特征,给我们许多有益的启示。学习、了解国外先进的德育经验,可以更好地服务于中国的学校德育教育。     

基于特定零件的组合钻床改造设计

从企业实际需求出发,在全面分析被加工零件的基础上,指出采用现有设备的不足,不仅工人劳动强度大,而且生产率低,不利于保证零件加工精度.研制出了16孔单工位组合钻床,解决了上述问题.     

钢筋混凝土连续箱梁温度收缩应力计算

提出了钢筋混凝土连续箱梁温度收缩应力计算的一种模式，并对这种计算模式作了详细阐述，为工程技术人员采取适当工艺和养护方法来控制混凝土早期裂缝的发生提供了一种依据．     

斜拉桥索梁锚固区足尺疲劳试验研究

斜拉桥索梁锚固区焊接集中,受力复杂,特别是在运营阶段循环应力作用下的疲劳性能值得关注。本文根据国内某大型斜拉桥中索梁锚固区构造,制作1∶1的索梁锚固区试验模型,进行静力与疲劳试验。根据试验实测数据,研究锚固区关键部位的静力及疲劳受力性能,从而对实桥索梁锚固区结构的可靠性做出评价。     

青少年“超女”热引发的争论及思考

自2004年以来,国内兴起的青少年“超级女声”热引发了学术界广泛的讨论,支持与反对的双方基于自己的立场各抒己见。对相关争论进行梳理和分析,能使人们理性地认识和对待青少年流行文化中“超级女声”热现象。