最佳功率因数的确定及受益分析

本介绍了无功功率补偿容量与功率因数的关系，阐述了提高功率因数的意义，重点分析了最佳功率因数的确定方法，用实例说明了提高功率因数所产生的经济效益，并简要介绍了新型的微电脑功率因数自动控制器的原理，硬件配置，主要功能及特点。     

Academic Twitter and professional learning: myths and realities

Social networking sites provide opportunities for informal and social learning of academic practices in higher education, yet not all academics engage in these spaces. This qualitative study suggests that while Twitter offers informal opportunities for academic development, inhibiting factors prevent staff from establishing their social presence and participating in conversations on academic Twitter. In a pervasively digital era, rethinking academic development practices is required to build digital capacity and digital identity of staff to support participation on social networking sites for academic learning and development.     

在增强战斗力和凝聚力上下功夫--建党80周年历史的反思与前瞻

建党80年来,党成功与失败的经验和教训的聚焦点,在于有没有战斗力和凝聚力.其凝聚力和战斗力深深地凝结在80年间党的量变和质变的过程中.应对新世纪的严峻挑战和考验的关节点,必须进一步增强党的战斗力和凝聚力.为此,要围绕具体落实"三个代表"这一着力点,在提高党员素质上、在党的基层组织建设上、在反腐败净党风上下功夫.     

浅议钢琴弹奏中手指的能力与训练

弹钢琴的最终目的是让听众听到美好的声音,这种让钢琴来发出声音的过程就是我们演奏的过程.在此过程中,手指起着举足轻重的作用.手指的能力直接影响着弹奏中的清晰度、均匀度和流畅度.     

Information-Seeking From Organizational Communication Sources During Healthcare Technology Change

This study collects survey data (n = 345) from a healthcare organization in the early stages of electronic health record (EHR) implementation to understand how a series of organizational communication sources—managers, coworkers, IT personnel, and online organizational sources—impact healthcare employees’ (a) EHR resistance and (b) perceptions of EHR’s relative advantage. Regression results reveal that the levels of EHR information employees sought from coworkers did not predict EHR resistance or perceived relative advantage. Seeking information from managerial sources enhances EHR’s perceived relative advantage and decreases affective EHR resistance but is not related to behavioral or cognitive EHR resistance. Seeking information from IT staff decreased all types of EHR resistance and increased EHR’s perceived relative advantage. Finally, seeking information from online organizational sources increased EHR’s perceived relative advantage and decreased behavioral and cognitive resistance but is not related to affective EHR resistance. Study implications and limitations are offered.     

“第一村”的启示

文章以法约尔的一般管理理论和韦伯对权力的经典分析为工具,研究了我国农村的“第一村”现象,认为统一领导是“第一村”成功的原因,制度缺失是“第一村”失败的原因,农村的制度建设是“第一村”持续发展的保障。     

The relations of a school’s capacity for institutional diversity to student achievement in socio-economically,ethnically, and linguistically diverse schools

This study examines how a school’s capacity for institutional diversity relates to student achievement in socio-economically, ethnically, and linguistically diverse schools. It also investigates whether various student groups benefit differently from a school’s level of student diversity and its institutional capacity for diversity. Using data from the High School Longitudinal Study of 2009 (HSLS:09), the study uses two-level hierarchical linear models to explore the relationships between multiple types of school diversity and student achievement and to examine the role played by an institution’s capacity for diversity. Our findings confirm that different types of school diversity have different associations with the academic achievement of students from varied family and language backgrounds. We also find that a school’s capacity for diversity is a significant predictor of the academic success of students, particularly for students from lower income families and those who use a home language other than English.     

共基极放大电路的两种计算方法

本文对共基极放大电路用微变等效电路法和方框图法分别计算其动态参数.     

范德瓦尔斯气体的内能及摩尔热容

用热力学的方法讨论了物质内能的一般表达式,从而从普物的角度导出范德瓦尔斯气体的内能及定压摩尔热容与定容摩尔热容的差值。     

旅游走廊:概念、动力机制、发展模式研究--以宁西铁路旅游走廊为例

“旅游走廊”是在带状地域内旅游要素整合发展的一种空间组织形式,现已被广泛运用于区域旅游发展规划理念之中。对旅游走廊的概念、动力机制和发展模式等基本问题进行了探讨,并据此分析了宁西铁路旅游走廊的动力机制和发展阶段。