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171.
Research on the diffusion of new technologies has centred on the study of the interfirm rate of diffusion, paying much less attention to intrafirm aspects. This paper attempts to overcome this gap in the literature by analysing the factors that influence the speed with which a new technology, the ATM, is fully adopted. The data over which the hypotheses are tested belongs to the Spanish savings banks market. The results show that the rate of intrafirm diffusion is explained by innovation, firm and market characteristics. In testing our hypotheses we make use of both traditional methods and survival analysis techniques.  相似文献   
172.
Abstract

Numerous organizations work to provide humanitarian aid to undocumented migrants along the US-Mexico border—from running shelters in Mexico to placing water on migratory trails. Resistance to information-sharing between organizations (and to the public), especially through technologically mediated means, is common. However, some organizers and volunteers work across organizational boundaries and share information informally. Information secrecy is often justified by concerns that law enforcement authorities or anti-immigration activists might gain access to information, allowing them to harm, detain or remove migrants, or interfere with humanitarian work. The choices made about the collection and (non)disclosure of information are manifestations of what we call “liminal” information practices: such behaviors are unique to humanitarian volunteers working in the gray, ethical area between law enforcement and humanitarian values and action, and they are guided by the information politics at play within this context.  相似文献   
173.
This article describes a case study that is part of a broader research project in which schools set up processes of school improvement inspired by the proposals put forward by students. The project furthers the initiatives of the student voice movement and seeks to implement more participative pedagogical models. This as a whole represents a novel opportunity in the context of Spanish schools. Specifically, in the text we describe an experience in which students work as researchers (SAR) and in which we describe and discuss this process carried out in a primary school through ethnographic tools. The findings allow us to discover in this experience a learning opportunity for the members of the school community and for the school itself. Likewise, the research permits us to verify the existence of certain changes in the preexisting practice architectures that affect the cultural–discursive dimension, the material–economic dimension and the social–political dimension of schools.  相似文献   
174.
ABSTRACT

It is widely known that people with Down syndrome have difficulties transitioning from a basic understanding of counting and cardinality to more advanced arithmetic skills. This is commonly addressed by resorting to the mechanical use of algorithms, which hinders the acquisition of mathematical concepts. For this reason some authors have recently proposed a shift in the focus of learning from arithmetic to more fertile fields, in terms of understanding. In this paper we claim geometry fits this profile, especially suited for initiating children with Down syndrome into mathematics. To support this we resort to historical, epistemological, and cognitive reasons: the work of Séguin and his intuition on the central role of geometry in the development of abstract thinking in the so-called idiot children, the ideas of René Thom about the role of continuum intuition in the emergence of conscious thinking, and finally the two strengths people with Down syndrome display: visual learning abilities and interest in abstract symbols. To support these ideas we present the main findings of qualitative research on elementary mathematics teaching to a group of seven children (3–8) with Down syndrome in Spain. The didactic method used, naturally enhance their naïve geometrical conceptions.  相似文献   
175.
There is no doubt that the teaching change generated by the adaptation of the former study programme to the EHEA has led to significant shifts regarding teaching loads and the organization of subjects. This paper assesses the students’ perception of the subject, the teacher and the teaching organization according to the study programme followed. For this purpose, 226 students have been assessed who have all received teaching in the same subject, with the same teacher and with the same contents, with the only variant being their study plan. An instrument developed ad hoc was applied, which comprises 18 items and assesses the students’ perceptions of the content and the perceived organization of the teaching. On the one hand, the results show the instrument to be an adequate scale that assesses teaching and organizational aspects linked to study plans in a valid and reliable way. On the other hand, it reveals that students following the new plan show more negative perceptions of organizational quality and aspects related to learning content. Moreover, these students’ marks tend to be lower compared to those achieved by students following the former plan.  相似文献   
176.
177.
Two experiments using garden snails (Helix aspersa) showed conditioned inhibition using both retardation and summation tests. Conditioned inhibition is a procedure by which a stimulus becomes a predictor of the absence of a relevant event—the unconditioned stimulus (US). Typically, conditioned inhibition consists of pairings between an initially neutral conditioned stimulus, CS2, and an effective excitatory conditioned stimulus, CS1, in the absence of the US. Retardation and summation tests are required in order to confirm that CS2 has acquired inhibitory properties. Conditioned inhibition has previously been found in invertebrates; however, these demonstrations did not use the retardation and summation tests required for an unambiguous demonstration of inhibition, allowing for alternative explanations. The implications of our results for the fields of comparative cognition and invertebrate physiological models of learning are discussed.  相似文献   
178.
Education and Information Technologies - The advancements of technology have allowed digital transformation to reach all productive sectors, including the education sector and its members. This...  相似文献   
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