文化、人格及其教育学意义

文化决定人格的产生、延续及发展。人格是文化的体现和寄托,是文化延续和发展的力量,是文化追求的目标。文化与人格的关系表明：教育应着力于文化的传递、发展和创造,着力于受教育者的人格培养,着力于提高全体国民的科学、文化、道德素质。     

非线性RC电路的暂态特性

通过对一个可解的非线性RC电路模型的暂态过程的研究 ,得到非线性RC电路的一些普遍特性     

运用等维灰数递补模型对亚洲、中国自由泳实现跟踪战略的预测研究

运用等维灰数递补模型方法，建立了亚洲、中国自由泳运动成绩的发展模型，运用该模型对亚洲、中国自由泳运动成绩的发展趋势进行了跟踪预测。     

Education and inequalities in rural Vietnam in the 1990s

This article examines the determinants of children's schooling during the 1990s in rural areas of Vietnam. It focuses on the impact of family attributes on the likelihood of children remaining in school or leaving during the primary and secondary school years. Using data from the Vietnam Living Standard Survey (VLSS) of 1992–93 and 1997–98, the authors apply the survival analysis technique to follow a group of 3301 children aged between 6 and 13 over a 5-year period. In addition to the characteristics of the children and their families, they consider community attributes as larger contextual variables that also affect children's school leaving. Overall, they found very significant socioeconomic differentiations between families with respect to schooling, which puts economically disadvantaged children at risk for having their schooling interrupted at a young age. The results also indicate that for girls, compared with boys, the likelihood of staying in school is more responsive to household and community characteristics.     

Teachers' views on citizenship education in secondary education in The Netherlands

In 2005 the Dutch Minister of Education proposed making it compulsory for all schools in The Netherlands to stimulate active citizenship and social integration. Teachers must give these educational goals a tangible form in their practice. What are the teachers' views on citizenship education? Concepts of citizenship education and the teacher's role in it may differ widely, and very different perspectives on values and value development are possible. This article addresses how teachers view citizenship education. We present the results of a survey conducted among a representative sample of Dutch secondary schools. The results show that teachers make clear choices in the importance they attach to certain values. Teachers want students to acquire skills to analyse, communicate and reflect on values, and they want to stimulate the development of certain values. The chosen values relate to different types of citizenship. School level, school subject and the age of the teachers make a difference to the importance teachers attach to different values.     

Oases at the bottom of the ocean

In the early 1980s biologists were amazed, and sometimes sceptical, to be told of the existence of luxuriant fauna thriving at depths of between two and three thousand metres close to hot water springs. Frequently consisting of hitherto unknown species, these colonies are nothing less than oases, contrasting starkly with the deserts usually to be found at great depths. One of their features is a very short life cycle. But, most strikingly, they are the first discovery on our planet of living systems which survive without solar energy or photosynthesis.     

High-throughput sorting of drops in microfluidic chips using electric capacitance

We analyze a recently introduced approach for the sorting of aqueous drops with biological content immersed in oil, using a microfluidic chip that combines the functionality of electrowetting with the high throughput of two-phase flow microfluidics. In this electrostatic sorter, three co-planar electrodes covered by a thin dielectric layer are placed directly below the fluidic channel. Switching the potential of the central electrode creates an electrical guide that leads the drop to the desired outlet. The generated force, which deflects the drop, can be tuned via the voltage. The working principle is based on a contrast in conductivity between the drop and the continuous phase, which ensures successful operation even for drops of highly conductive biological media like phosphate buffered saline. Moreover, since the electric field does not penetrate the drop, its content is protected from electrical currents and Joule heating. A simple capacitive model allows quantitative prediction of the electrostatic forces exerted on drops. The maximum achievable sorting rate is determined by a competition between electrostatic and hydrodynamic forces. Sorting speeds up to 1200 per second are demonstrated for conductive drops of 160 pl in low viscosity oil.