Challenging neo-liberalism,building democracy: creating the Citizen School in Porto Alegre,Brazil

In this article, we situate the processes of educational policy and reform into their larger socio-political context. We describe the ways in which a set of policies has had what seem to be extensive and long lasting effects because the policies are coherently linked to larger dynamics of social transformation and to a coherent strategy that aims to change the mechanisms of the state and the rules of participation in the formation of state policies. We describe and analyse the policies of the ‘Popular Administration’ in Porto Alegre, Brazil. We specifically focus on the ‘Citizen School’ and on proposals that are explicitly designed to radically change both the municipal schools and the relationship between communities, the state and education. This set of policies and the accompanying processes of implementation are constitutive parts of a clear and explicit project aimed at constructing not only a better school for the excluded, but also a larger project of radical democracy. The reforms being built in Porto Alegre are still in formation, but we argue that they have crucial implications for how we might think about the politics of education policy and its dialectical role in social transformation.     

A Survey of School/College Partnerships for Minority and Disadvantaged Students

This study focuses on comprehensive partnerships between K–12 schools and postsecondary institutions which were created to improve the precollege academic preparation, college enrollment, and postsecondary success of minority and disadvantaged students. The study identified those partnerships that had been in existence in the United States for more than five years and surveyed them utilizing a 12-item questionnaire designed to determine the following: (1) structural characteristics; (2) funding; (3) success in achieving their goals and objectives; and (4) data collected to measure success.During the course of study, key informants from each partnership were surveyed. Partnership research has been scant, in part due to the fact that school-college partnerships of this type are a fairly new development in education. The results of the surveys have contributed new information to the field on the characteristics of partnerships. Findings also indicated that a majority of these partnerships incorporated some of the important characteristics for success recommended in the available literature. The partnerships consider themselves to be at least somewhat successful in achieving their goals of improving high school preparation and college enrollments for minority and disadvantaged students. They are, however, less informed about the success of their participants in college, especially college retention and graduation. They are also less informed about the availability of financial resources for their college aspirants and appear only marginally committed to creating institutional change.     

Black and white transparency: contradictions of a moral metaphor

Transparency has evolved from an individual, dangerous power in Plato to a desirable, collective property in the contemporary world. This paper intends to give a brief account of this long and somehow surprising path and extract some interesting consequences for economic and political activities, as well as for information technologies. Six literary masterpieces are used to highlight the contradictions and dangers entailed by the abuse of the fascinating metaphor of transparency. In the end, what is usually intended when demanding transparency from a corporation, a firm or a state is more (or more accessible) information about it, i.e., understandable and abundant black and white data. This means reporting, picturing, producing material, becoming apparent, which is precisely the contrary of being transparent. We don’t want to look through, but to look directly at. The question, then, is not transparency, but opacity: what do we need and want to see, and how is this going to be produced?     

Unraveling sources of stimulus control in a temporal discrimination task

In temporal discriminations tasks, more than one stimulus may function as a time marker. We studied two of them in a matching-to-sample task, the sample keylight and the houselight that signaled the intertrial interval (ITI). One group of pigeons learned a symmetrical matching-to-sample task with two samples (2 s or 18 s of a center keylight) and two comparisons (red and green side keys), whereas another group of pigeons learned an asymmetrical matching-to-sample task with three samples (2 s, 6 s, and 18 s) and two comparisons (red and green). In the asymmetrical task, 6-s and 18-s samples shared the same comparison. In a subsequent retention test, both groups showed a preference for the comparison associated with the longer samples, a result consistent with the hypothesis that pigeons based their choices on the duration elapsed since the offset of the houselight (i.e., sample duration + retention interval). Results from two no-sample tests further corroborated the importance of the ITI illumination as a time marker: When the ITI was illuminated, the proportion of choices correlated positively with the retention interval; when the ITI was darkened, choices fell to random levels. However, the absolute value of choice proportions suggested that the sample stimulus was also a time marker. How multiple stimuli acquire control over behavior and how they combine remains to be worked out.     

Aqueous extracts from Tenebrio molitor larval and pupal stages inhibit early hepatocarcinogenesis in vivo

Journal of Zhejiang University-SCIENCE B - 肝细胞癌 (HCC) 具有复杂的肿瘤内异质性,...     

To learn and to construct knowledge in the context of work with adult education: a Portuguese case study

Work contexts are frequently referred to as spaces of learning and production of individual and/or collective knowledge. In such contexts specific dynamics are developed which cause the processes of learning and of knowledge production to have particularities. This paper aims at accounting for some dynamics that are associated with those processes, based on the main results of an ethnographic study on the adult educator team of a Portuguese local development association. The research identified ways of working/action rules based on the learning and knowledge production processes in the association. Mutual help, the reformulation and collectivization of practice, reflection in and about the action, and the negotiation of meaning about the practice are some of the mechanisms identified. The study also highlights how those dynamics of knowledge and learning and ways of doing may contribute to a practice which is closer to the needs of the adults to whom this team offers its education and training services.     

Differences between skilled and less‐skilled young readers in the retrieval of semantic,phonological, and shape information

This study aimed to determine whether the reading skills of third‐grade schoolchildren are associated with their preferences for semantic, phonological, and shape competitors (images or printed words) after being exposed to a spoken critical word. Two groups of children participated: skilled readers and less‐skilled readers. Through a language‐mediated visual search, children's fixations on the three competitors and a distractor were measured. When looking at images, both groups of readers preferred to look at the semantic competitor. When reading words, both groups showed a preference for the phonological competitor, but only skilled readers were sensitive to semantic information. These results suggest that early reading skills influence access to different types of representations in response to hearing a word, and they confirm the existence of a cascaded activation of information retrieval in childhood.     

A ‘power law’ based method to reduce size-related bias in indicators of knowledge performance: An application to university research assessment

The knowledge production provided by universities is essential to sustaining a country’s long-term economic growth and international competitiveness. Many nations are thus driving to create sustainable and effective funding environments. The evaluation of university knowledge, productivity and research quality becomes critical, with ever increasing share of public funding allocated on the basis of research assessment exercises. Nevertheless, the existing methods to assess the universities’ knowledge production are often affected by limits and biases, extensively discussed in the scientific literature.In this paper we study how to reduce the effect of size-related bias due to university size on the indicators of knowledge performance used in evaluation exercises. We propose an innovative utilization of the scale-free property of the power laws as a scaling relationship, to normalize research productivity indicators, and provide results independent by the university size. Our method has evident policy implications and gives a contribution for the future design of assessment exercises.We apply our findings in a recent Italian research assessment exercise.     

Testing the scalar expectancy theory (SET) and the learning-to-time model (LeT) in a double bisection task

Two theories of timing, scalar expectancy theory (SET) and learning-to-time (LeT), make substantially different assumptions about what animals learn in temporal tasks. In a test of these assumptions, pigeons learned two temporal discriminations. On Type 1 trials, they learned to choose a red key after a 1-sec signal and a green key after a 4-sec signal; on Type 2 trials, they learned to choose a blue key after a 4-sec signal and a yellow key after either an 8-sec signal (Group 8) or a 16-sec signal (Group 16). Then, the birds were exposed to signals 1 sec, 4 sec, and 16 sec in length and given a choice between novel key combinations (red or green vs. blue or yellow). The choice between the green key and the blue key was of particular significance because both keys were associated with the same 4-sec signal. Whereas SET predicted no effect of the test signal duration on choice, LeT predicted that preference for green would increase monotonically with the length of the signal but would do so faster for Group 8 than for Group 16. The results were consistent with LeT, but not with SET.     

Learning Metabolism by Problem‐Based Learning Through the Analysis of Health or Nutrition Articles from the Web in Biochemistry

Problem‐based learning using authentic material from the web was used to teach metabolism in a biochemistry course. In place of traditional lectures, students’ analyzed health or nutrition articles from newspapers and magazines, which were debatable from a scientific point of view, following the principles of problem‐based learning. A mixed method was used to assess the students’ perception, use of sources of information and web services while performing the task, and changes in self‐directed learning. Students’ perception was particularly positive. The majority stated that the methodology helped them to apply knowledge to real life and that they learned about the topic analyzed by their group. The perception that problem‐based learning promotes the ability to solve problems, critical thinking, and collaborative work is noteworthy. Tutors considered that teams identified the problem and concluded correctly, noticing students’ enthusiasm and motivation. The methodology also promoted scientific reading. More importantly, a significant improvement in self‐directed learning of the 2014 cohort was detected. This intervention suggests that this methodology is a valuable alternative to motive and promote self‐learning; representing an opportunity to shift the focus of instruction from the teacher to the student. The design of the activity and materials are described in detail. Also, limitations and solutions are discussed.