Perceived rates of return to higher education: Further evidence from Cyprus

The paper provides new estimates of the perceived rates of return to higher education in Cyprus and compares them to previous estimates for the year 1994 in the same country. Both the elaborate and the short-cut methods are used in the estimation of rates of return. The estimated rates are entered as independent variables in logistic regression analysis in order to study the effect of economic considerations on the decision of secondary school students to pursue higher education. The findings show an increase in the perceived rate of return for both higher education and labour market entrants. In agreement with human capital theory, the mean rate of return to higher education expected by higher education candidates is considerably higher than that expected by labour market entrants. In two logistic regression models, the perceived rate of return to higher education, as estimated by both the elaborate and the short-cut methods, has a significant effect on the students’ intention to pursue higher studies.     

CDC25在细胞周期运行和细胞周期检验点应答中的作用和调控机制

细胞分裂周期运行和不同时相的转换通过CDC25磷酸酶去磷酸化和激活周期蛋白依赖性激酶(CDK)复合物来调控.在哺乳动物中发现3种CDC25同工物:CDC25A、CDC25B和CDC25C.早期认为在特定的细胞周期时相CDC25的3个同工物间没有功能上的重叠,然而最近发现多个CDC25同工物协同调节每个细胞周期转换过程.CDC25的活性通过多种在某种程度上重叠的机制严格调控,包括细胞内含量、亚细胞定位和磷酸化状态.CDC25也是细胞周期检验点应答中的关键调节因子,而CDC25B在检验点诱导的G2-M阻滞的恢复中起作用.未来对CDC25调控机制的阐明,将有助于发展出以CDC25为靶目标的、更为有效的抗肿瘤药物.     

University rankings in action? The importance of rankings and an excellence competition for university choice of high-ability students

This paper analyzes how high-ability students respond to different indicators of university quality when applying for a university. Are prospective students influenced by quality indicators of a university ranking or by an excellence status awarded within a nationwide competition? And if so, are some quality dimensions, e.g. research reputation, mentoring, faculty infrastructure, students’ satisfaction or the excellence status, more important than others? In order to address these questions, I estimate a random utility model using administrative application data of all German medical schools. As identification relies on the variation in quality indicators over time, I can disentangle the response to changing quality indicators from the common knowledge regarding university attractiveness. Results show that the ranking provides more relevant information in the quality dimensions mentoring, faculty infrastructure and the overall students’ satisfaction than with respect to research.     

TSD-25型全固态数字发射机的故障分析与解决

笔者介绍了我台使用的全固态数字发射机TSD-25型的工作原理和主要优点,强调了使用中需要注意的问题,并针对几种常见故障,介绍了可借鉴的故障分析和解决的方法.     

武术套路运动对女大学生肺通气功能的影响

为探讨武术套路运动对女子肺通气功能的影响,对从事1年系统武术套路训练的体育女大学生的肺通气功能进行测试分析。结果表明:安静状态下,武术套路运动可以显著提高体育女大学生的VC、MVV、FVC、FVC1、FEV1/FVC%、FEF25-75、Vmax25%、Vmax55%和Vmax75%水平。认为系统武术套路运动对提高女大学生的肺通气功能具有良好的促进作用。     

The effect of public subsidies on firms’ investment–cash flow sensitivity: Transient or persistent?

This work analyses the effect of public subsidies on firms’ investments and investment–cash flow sensitivity in a longitudinal sample of 288 Italian unlisted non-venture capital backed owner-managed new-technology-based firms (NTBFs), observed over a 15-year period from 1994 to 2008. Seventy five of these firms received one or more public subsidies in the observation period. We use an error correction model (ECM) specification and system generalised method of moment (GMM) techniques that take into account the endogeneity of public subsidies. First, we find that the investments of small NTBFs are sensitive to internal cash flows, while those of large NTBFs are not. Receipt of public subsidies by small NTBFs results in an increased investment rate and a reduced investment–cash flow sensitivity, in the immediately following year. We interpret these results as an indication of the relaxation of financial constraints. Moreover, while the increase in the investment rate does not persist in the long run, the dependence of investments on cash flow remains negligible after receipt of the first public subsidy. These results support the view that public subsidies can help small NTBFs in persistently removing the financial constraints that bind their investment activity.     

The Revised SEND Code of Practice 0–25: effective practice in engaging children and young people in decision‐making about interventions for social,emotional and mental health needs

A key principle upon which the Revised Special Educational Needs and Disability (SEND) Code of Practice 0–25 (2015) is based is children's involvement in decision‐making that affects them, and a significant change is the removal of the term ‘behaviour’ and an emphasis on social, emotional and mental health (SEMH) needs. To ensure that child involvement is a practical reality for children with SEMH needs, staff in schools benefit from a range of evidence‐informed strategies for engagement and participation. This article describes an approach to the provision of learning mentor services for children with SEMH in a primary school based on partnerships between the children and staff in establishing and measuring change. Limitations are noted and suggestions for future developments are also made.     

论在x.25广域网中实现x.25和tcp/ip数据传输的网络共享

我们经常在网络设计中用到x.25协议和tcp/ip协议,那么在实际应用中如何实现二者的结合呢?文章结合华为路由器的使用,举例说明如何在x.25广域网中实现x.25和tcp/ip数据传输的网络共享,并依此为网络应用工作者提供一定的参考和帮助.     

浅谈网络互联及建网技术

计算机网络源于计算机与通信技术的结合．本文阐述了网络互联网的基本概念与方法,介绍了公共传输系统、公共电话交换网、多兆住数据交换服务、DDN数字数据网、X．25分组交换网．     

Is there a linear relationship between R&D intensity and growth? Empirical evidence of non-high-tech vs. high-tech SMEs

To investigate whether there is a similar relationship between R&D intensity and growth in high-tech and non-high-tech small and medium-sized enterprises (SMEs), we examine two samples of SMEs in manufacturing industries, applying the two-step estimation method. Our findings are that R&D intensity restricts the growth of high-tech SMEs at lower levels of R&D intensity and stimulates their growth at higher levels. However, R&D intensity restricts the growth of non-high-tech SMEs regardless of the level of R&D. The relationships obtained between other determinants considered in the literature and the growth of high-tech and non-high-tech SMEs allow us to conclude that (i) smaller, younger, non-high-tech SMEs grow more quickly than larger, older, non-high-tech SMEs, which does not occur in the case of high-tech SMEs; and (ii) financing restrictions are especially important in financing the growth of high-tech SMEs, compared with non-high-tech SMEs.