Stochastic input-to-state stability of random impulsive nonlinear systems

In this paper, the stochastic input-to-state stability is investigated for random impulsive nonlinear systems, in which impulses happen at random moments. Employing Lyapunov-based approach, sufficient conditions for the stochastic input-to-state stability are established based on the connection between the properties of system and impulsive intervals. Two classes of impulsive systems are considered: (1) the systems with single jump map; (2) the systems with multiple jump maps. Finally, some examples are provided to illustrate the effectiveness of the proposed results.     

Limitations on the human capital transferability of adult migrants in Spain: Incentive or barrier for a new investment in education?

Many empirical studies on immigrant integration document the benefits of an education acquired in the country of destination. In this article; we study how the degree of human capital transferability affects an immigrant's chances of studying in Spain. We used data from the Spanish Labour Force Survey (2008–2015) for a sample of adults aged 18–55 who had left the educational system. The main findings show that natives are the ethnic group with the highest likelihood of re-enrolling in education. Amongst immigrants, those with fewer limitations on human capital transferability also invest more. These results question the predictions of the Immigrant Human Capital Investment model which expect that immigrants whose human capital depreciates upon arrival and those who can obtain a higher return on a new investment in education are therefore more likely to study. Moreover, the effect of skill transferability differs depending on the type of obstacle and the kind of education. Immigrants with less linguistic and cultural familiarity with the host country are less likely to undertake non-formal education than formal education. However, when the transferability obstacles are related to administrative requirements and legal restrictions, the probability of investing in non-formal education is higher. We conclude that immigrants with low skill transferability are not only less well integrated in the labour market upon arrival, but are also less able to redress that disadvantage through a new investment in education.     

Altmetrics的形成与演进:理论假说、发展阶段及学科关系

[目的/意义] Altmetrics诞生十周年之际，对其前期发展情况进行总结，有助于推动其往积极方向发展。[方法/过程] 利用文献计量方法进行量化研究以展现Altmetrics领域的总体研究和发展情况；从术语变迁、定义等方面揭示其内涵；提出三种理论假说寻求Altmetrics存在合理性的理论支撑；划分不同阶段梳理其发展程度；分析它与其他学科的关系以明确学科属性及价值。[结果/结论] Altmetrics为计量学提供了一种新思维、新方法；开放科学假说、数字学术假说和学术传承假说符合新环境Altmetrics发展的新特点，有效支撑了Altmetrics的存在与发展；Altmetrics发展迅速，但现阶段处于发展初期，且国内外发展程度存在差异；在辨析与其密切相关学科之间关系的基础上，认为需推动Altmetrics自身学科纵深发展以及加强跨学科的合作研究。     

女性话语的身体性

身体在伊瑞格蕾（Irigaray）的“女人话”（parler-femme／female language）,西苏（Cixous）的“女性写作”（ecriture feminine／women＇s writing）和克里斯蒂娃（Kristeva）的“符号界”（the semiotic）理论当中都占有重要位置。但前两者所强调的女性话语依然是建立在本质主义的女性身体基础上的,因此在颠覆男性-意识／女性-身体这个西方传统二元对立项的同时又无形中使之强化。克里斯蒂娃则摆脱了本质主义的身体,倡导回归母性空间和身体性的符号界。这就取消了原有的二元对立,使女性话语成为男性和女性都可以介入的反男性中心话语和理性主义的表达方式。     

Students with special educational needs and cooperative learning in the ordinary classroom: some learnings from teaching practice

This article presents the results of a study to determine the strategies used by teachers to include students with special educational needs in regular classrooms, primarily using Cooperative Learning strategies. It aims to identify the factors of inclusive learning in order to enhance the participation and learning of all students in the classroom and in their cooperative teams. A qualitative case study was carried out in the context of the teachers participating in a postgraduate course ‘expert in cooperative learning’ offered by the University of Alcalá (Spain), over a period of six years (2011–2017), involving the participation of 176 professional teachers. All the participants attended an annual university continuous training course on cooperative learning. Document analysis, in-depth interviews and a questionnaire designed ad hoc were used. The conclusions include the importance of cooperative work in facilitating inclusive education, with a variety of different strategies used to respond to all students' needs, and those with special educational needs in particular, and the coordination required between teachers and special educational needs specialists to implement those strategies.     

谈新课程教学如何规范陈述教学目标

教师在教学目标陈述方面仍存在问题与困惑。新课程背景下,课堂教学目标要基于课程标准进行归类与陈述,体现学习目标本质,以学生为行为主体,要符合学科课程属性,表述要具体可操作。     

The Hidden Curriculum of Domestication

Four ethnically diverse faculty members in the field of education discuss the professional impact and personal affects of introducing critical themes of race, class, gender, and culture within their research and course offerings. Given that the professional outlook for university faculty of color in general, is grim, a willingness to imbue their research and courses with a critical interrogation of prevailing education topics and theories would seem to invite greater personal risk and professional jeopardy. The following dialogue introduces both the mechanisms by which critical faculty in general, and faculty of color in particular, can be conditioned to subordinate their critical impulses and the strategies they use to resist academic cultures of domestication.     

行政公正对现代多元新公共行政学说的借鉴

在当代民主社会。行政公正是社会公众的共同需求,是改善社会不公正状况的重要途径,是我国构建和谐社会的重要保障。文章简要分析行政公正的涵义及价值,阐发新公共行政、新公共管理、新公共服务等现代多元新公共学说对行政公正的借鉴意义。     

比较教育研究中的人种志：关系定位及特征诠释

研究方法与一门学科的学科性质有关,它必将贯穿于该学科发展的不同阶段。人种志与比较教育研究有着原始且稳固的方法论关系。由于受比较教育学科性质的内在规约,人种志以其自身范式的演变绵延于比较教育学科发展的进程之中。     

Decomposing apparent power and losses in distribution systems with nonlinear loads

The definition of reactive power for non-sinusoidal conditions is a controversial issue. The mathematical treatment of nonlinear loads in power systems is also unsettled. This paper starts with the decomposing of apparent power in,the cases of linear and nonlinear loads. When harmonics are present, apparent power is composed of active power, reactive power, and disturbed reactive power. Linear element can be defined as the element without disturbed reactive power. This definition is based on a practical engineering concept which can separate the contribution from the apparent power into utility-duty part and custom-duty part. The field investigation of home-used facilities was conducted. Also the data acquisition in the 0.4 kV distribution systems was completed. Moreover, the loss increase due to the nonlinear loads was estimated. Nonlinear loads can be a dominant effect with respect to reactive power and power factor. Field data from a number of nonlinear load types indicate that the disturbed reactive power can cause significant losses in utility supply systems.